Microsoft.TeamFoundation.MVVMでValidation

最近作ってる「イベントログからPCの稼働時間を取得するアプリ」にエラーチェックを組み込んだ。

エラーはToolTipで表示している。

以下、手順。

Microsoft.TeamFoundation.MVVMのWindowViewModelは、ValidatingViewModelBaseから継承していてIDataErrorInfoを含んでいる。

    public class WindowViewModel : ValidatingViewModelBase
    {

1 2	public class WindowViewModel : ValidatingViewModelBase {

    // 概要:
    //     ビュー モデルの有効性認証をサポートする。
    public class ValidatingViewModelBase : ViewModelBase, IDataErrorInfo
    {
        public ValidatingViewModelBase(ViewModelBase parentViewModel = null);
        //
        public ValidatingViewModelBase(Dispatcher dispatcher, ViewModelBase parentViewModel = null);

        // 概要:
        //     検証規則のコレクション。
        //
        // 戻り値:
        //     System.Collections.Generic.List<T> を返します。
        public List<ValidationRule> ValidationRules { get; }

        // 概要:
        //     1 個以上の検証規則が壊れているかどうかを調べます。
        //
        // 戻り値:
        //     検証規則が別の方法で失敗していない場合、は true。
        public bool HasErrors();
    }

// 概要:

// ビューモデルの有効性認証をサポートする。

public class ValidatingViewModelBase : ViewModelBase, IDataErrorInfo

{

public ValidatingViewModelBase(ViewModelBase parentViewModel = null);

public ValidatingViewModelBase(Dispatcher dispatcher, ViewModelBase parentViewModel = null);

// 概要:

// 検証規則のコレクション。

// 戻り値:

// System.Collections.Generic.List<T> を返します。

public List<ValidationRule> ValidationRules { get; }

// 概要:

// 1 個以上の検証規則が壊れているかどうかを調べます。

// 戻り値:

// 検証規則が別の方法で失敗していない場合、は true。

public bool HasErrors();

}

    // 概要:
    //     ユーザー インターフェイスをバインドできる、カスタム エラー情報を提示するための機能を提供します。
    public interface IDataErrorInfo
    {
        // 概要:
        //     オブジェクトに関する間違いを示すエラー メッセージを取得します。
        //
        // 戻り値:
        //     オブジェクトに関する間違いを示すエラー メッセージ。 既定値は、空の文字列 ("") です。
        string Error { get; }

        // 概要:
        //     指定した名前のプロパティに関するエラー メッセージを取得します。
        //
        // パラメーター:
        //   columnName:
        //     エラー メッセージを取得する対象のプロパティの名前。
        //
        // 戻り値:
        //     プロパティに関するエラー メッセージ。 既定値は、空の文字列 ("") です。
        string this[string columnName] { get; }

// 概要:

// ユーザーインターフェイスをバインドできる、カスタムエラー情報を提示するための機能を提供します。

public interface IDataErrorInfo

{

// 概要:

// オブジェクトに関する間違いを示すエラーメッセージを取得します。

// 戻り値:

// オブジェクトに関する間違いを示すエラーメッセージ。既定値は、空の文字列 ("") です。

string Error { get; }

// 概要:

// 指定した名前のプロパティに関するエラーメッセージを取得します。

// パラメーター:

// columnName:

// エラーメッセージを取得する対象のプロパティの名前。

// 戻り値:

// プロパティに関するエラーメッセージ。既定値は、空の文字列 ("") です。

string this[string columnName] { get; }

ValidatingViewModelBaseのpublic List<ValidationRule> ValidationRules { get; }にValidationRuleを追加すれば、ViewのValidatesOnDataErrorsでエラー状態が表示できる。

ValidationRuleから継承した日付のValidationRuleを作って、

    public class ValidationRuleDate : ValidationRule
    {
        public ValidationRuleDate(string name)
            : base(name)
        {
        }

        /// <summary>
        /// Validate
        /// </summary>
        /// <param name="viewModel"></param>
        /// <returns></returns>
        public override bool Validate(object viewModel)
        {
            var targetDate = this.GetPropertyValue(viewModel) as DateTime?;
            var today = DateTime.Now;
            var todayEndTime = new DateTime(today.Year, today.Month, today.Day, 23, 59, 59);

            // 未来日をチェック
            if (targetDate > todayEndTime)
            {
                Error = "未来日は指定できません";
                return false;
            }

            var vm = viewModel as EventLogViewModel;

            // 日付の逆転をチェック
            var startDate = vm.StartDate;
            var endDate = vm.EndDate;

            if (startDate > endDate)
            {
                Error = "日付が逆転しています";
                return false;
            }

            return true;
        }

    }

public class ValidationRuleDate : ValidationRule

{

public ValidationRuleDate(string name)

: base(name)

{

}

/// <summary>

/// Validate

/// </summary>

/// <param name="viewModel"></param>

/// <returns></returns>

public override bool Validate(object viewModel)

{

var targetDate = this.GetPropertyValue(viewModel) as DateTime?;

var today = DateTime.Now;

var todayEndTime = new DateTime(today.Year, today.Month, today.Day, 23, 59, 59);

// 未来日をチェック

if (targetDate > todayEndTime)

{

Error = "未来日は指定できません";

return false;

}

var vm = viewModel as EventLogViewModel;

// 日付の逆転をチェック

var startDate = vm.StartDate;

var endDate = vm.EndDate;

if (startDate > endDate)

{

Error = "日付が逆転しています";

return false;

}

return true;

}

ViewModelのコンストラクタで、ValidationRules に追加

            // ValidationRulesを設定
            ValidationRules.Add(new ValidationRuleDate("StartDate"));
            ValidationRules.Add(new ValidationRuleDate("EndDate"));
        }

// ValidationRulesを設定

ValidationRules.Add(new ValidationRuleDate("StartDate"));

ValidationRules.Add(new ValidationRuleDate("EndDate"));

}

ViewのXAMLでValidatesOnDataErrors=Trueを設定

      <DatePicker Name="startDate" SelectedDate="{Binding StartDate, ValidatesOnDataErrors=True}" Grid.Row="3" Grid.Column="1" Style="{StaticResource DatePickerStyle1}">

1	<DatePicker Name="startDate" SelectedDate="{Binding StartDate, ValidatesOnDataErrors=True}" Grid.Row="3" Grid.Column="1" Style="{StaticResource DatePickerStyle1}">

DatePickerのStyleでエラー時にToolTipを表示するようにする。

    :
                <!-- Validation.Errorの時の背景色設定 -->                
                <VisualState x:Name="InvalidUnfocused">
                  <Storyboard>
                    <ColorAnimation Storyboard.TargetName="PART_TextBox" 
                                    Storyboard.TargetProperty="(Border.Background).
                                    (SolidColorBrush.Color)" To="Pink" Duration="0" />
                    <ColorAnimation Storyboard.TargetName="PART_TextBox" 
                                    Storyboard.TargetProperty="(Foreground).
                                    (SolidColorBrush.Color)" To="Red" Duration="0" />
                    <BooleanAnimationUsingKeyFrames Storyboard.TargetName="PART_TextBox" 
                                    Storyboard.TargetProperty="(ToolTipService.IsEnabled)" Duration="0">
                      <DiscreteBooleanKeyFrame Value="True" KeyTime="0" />
                    </BooleanAnimationUsingKeyFrames>
                  </Storyboard>
                </VisualState>
                
    :
              <DatePickerTextBox x:Name="PART_TextBox"
                               Grid.Column="0"
                               Foreground="{TemplateBinding Foreground}"
                               Focusable="{TemplateBinding Focusable}"
                               HorizontalContentAlignment="Stretch"
                               Grid.Row="0"
                               VerticalContentAlignment="Stretch"
                               ToolTipService.IsEnabled ="False">
               <!-- ToolTipにエラーを表示する -->
                <DatePickerTextBox.ToolTip>
                  <TextBlock Text="{Binding Path=(Validation.Errors)[0].ErrorContent,
                                          RelativeSource={RelativeSource TemplatedParent}}"/>
                </DatePickerTextBox.ToolTip>
              </DatePickerTextBox>

<ColorAnimation Storyboard.TargetName="PART_TextBox"

Storyboard.TargetProperty="(Border.Background).

(SolidColorBrush.Color)" To="Pink" Duration="0" />

<ColorAnimation Storyboard.TargetName="PART_TextBox"

Storyboard.TargetProperty="(Foreground).

(SolidColorBrush.Color)" To="Red" Duration="0" />

<BooleanAnimationUsingKeyFrames Storyboard.TargetName="PART_TextBox"

Storyboard.TargetProperty="(ToolTipService.IsEnabled)" Duration="0">

</BooleanAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

<DatePickerTextBox x:Name="PART_TextBox"

Grid.Column="0"

Foreground="{TemplateBinding Foreground}"

Focusable="{TemplateBinding Focusable}"

HorizontalContentAlignment="Stretch"

Grid.Row="0"

VerticalContentAlignment="Stretch"

ToolTipService.IsEnabled ="False">

<DatePickerTextBox.ToolTip>

<TextBlock Text="{Binding Path=(Validation.Errors)[0].ErrorContent,

RelativeSource={RelativeSource TemplatedParent}}"/>

</DatePickerTextBox.ToolTip>

</DatePickerTextBox>

「表示」ボタンが非活性になっているのは、CommandのCanExecuteでHasErrors()をみてTrue/Falseを返しているから。

            // コマンド登録
            ViewCommand = new RelayCommand(
                (x) =>
                {
                    GetData(StartDate, EndDate);
                }
                , (x) =>
                {
                    // ValidationRulesにより入力エラーがある場合は無効にする
                    return !this.HasErrors();
                });

// コマンド登録

ViewCommand = new RelayCommand(

(x) =>

{

GetData(StartDate, EndDate);

}

, (x) =>

{

// ValidationRulesにより入力エラーがある場合は無効にする

return !this.HasErrors();

});

DatePickerのStyleはMSDNのDatePicker のスタイルとテンプレートから。

ToolTipｍｐStyleはMSDNのToolTip のスタイルとテンプレートから。

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
  <!--In this example, an implecit style for Calendar is defined elsewhere 
  in the application.  DatePickerCalendarStyle is based on the implicit 
  style so that the DatePicker will use the application's calendar style.-->
  <!--<Style x:Key="DatePickerCalendarStyle"
       TargetType="{x:Type Calendar}"
       BasedOn="{StaticResource {x:Type Calendar}}" />-->

  <!--The template for the button that displays the calendar.-->
  <Style x:Key="DropDownButtonStyle"
       TargetType="Button">
    <Setter Property="Template">
      <Setter.Value>
        <ControlTemplate TargetType="{x:Type Button}">
          <Grid>
            <VisualStateManager.VisualStateGroups>
              <VisualStateGroup x:Name="CommonStates">
                <VisualStateGroup.Transitions>
                  <VisualTransition GeneratedDuration="0" />
                  <VisualTransition GeneratedDuration="0:0:0.1"
                                  To="MouseOver" />
                  <VisualTransition GeneratedDuration="0:0:0.1"
                                  To="Pressed" />
                </VisualStateGroup.Transitions>
                <VisualState x:Name="Normal" />
                <VisualState x:Name="MouseOver">
                  <Storyboard>
                    <ColorAnimationUsingKeyFrames BeginTime="0"
                                                Duration="00:00:00.001"
                                                Storyboard.TargetName="BackgroundGradient"
                                                Storyboard.TargetProperty="(Border.Background).
                    (GradientBrush.GradientStops)[1].(GradientStop.Color)">
                      <SplineColorKeyFrame KeyTime="0"
                                         Value="#F2FFFFFF" />
                    </ColorAnimationUsingKeyFrames>
                    <ColorAnimationUsingKeyFrames BeginTime="0"
                                                Duration="00:00:00.001"
                                                Storyboard.TargetName="BackgroundGradient"
                                                Storyboard.TargetProperty="(Border.Background).
                    (GradientBrush.GradientStops)[2].(GradientStop.Color)">
                      <SplineColorKeyFrame KeyTime="0"
                                         Value="#CCFFFFFF" />
                    </ColorAnimationUsingKeyFrames>
                    <ColorAnimation Duration="0"
                                  To="#FF448DCA"
                                  Storyboard.TargetProperty="(Border.Background).
                            (SolidColorBrush.Color)"
                                  Storyboard.TargetName="Background" />
                    <ColorAnimationUsingKeyFrames BeginTime="0"
                                                Duration="00:00:00.001"
                                                Storyboard.TargetName="BackgroundGradient"
                                                Storyboard.TargetProperty="(Border.Background).
                    (GradientBrush.GradientStops)[3].(GradientStop.Color)">
                      <SplineColorKeyFrame KeyTime="0"
                                         Value="#7FFFFFFF" />
                    </ColorAnimationUsingKeyFrames>
                  </Storyboard>
                </VisualState>
                <VisualState x:Name="Pressed">
                  <Storyboard>
                    <ColorAnimationUsingKeyFrames BeginTime="0"
                                                Duration="00:00:00.001"
                                                Storyboard.TargetName="Background"
                                                Storyboard.TargetProperty="(Border.Background).
                      (SolidColorBrush.Color)">
                      <SplineColorKeyFrame KeyTime="0"
                                         Value="#FF448DCA" />
                    </ColorAnimationUsingKeyFrames>
                    <DoubleAnimationUsingKeyFrames BeginTime="0"
                                                 Duration="00:00:00.001"
                                                 Storyboard.TargetProperty="(UIElement.Opacity)"
                                                 Storyboard.TargetName="Highlight">
                      <SplineDoubleKeyFrame KeyTime="0"
                                          Value="1" />
                    </DoubleAnimationUsingKeyFrames>
                    <ColorAnimationUsingKeyFrames BeginTime="0"
                                                Duration="00:00:00.001"
                                                Storyboard.TargetName="BackgroundGradient"
                                                Storyboard.TargetProperty="(Border.Background).
                    (GradientBrush.GradientStops)[0].(GradientStop.Color)">
                      <SplineColorKeyFrame KeyTime="0"
                                         Value="#F4FFFFFF" />
                    </ColorAnimationUsingKeyFrames>
                    <ColorAnimationUsingKeyFrames BeginTime="0"
                                                Duration="00:00:00.001"
                                                Storyboard.TargetName="BackgroundGradient"
                                                Storyboard.TargetProperty="(Border.Background).
                    (GradientBrush.GradientStops)[1].(GradientStop.Color)">
                      <SplineColorKeyFrame KeyTime="0"
                                         Value="#EAFFFFFF" />
                    </ColorAnimationUsingKeyFrames>
                    <ColorAnimationUsingKeyFrames BeginTime="0"
                                                Duration="00:00:00.001"
                                                Storyboard.TargetName="BackgroundGradient"
                                                Storyboard.TargetProperty="(Border.Background).
                    (GradientBrush.GradientStops)[2].(GradientStop.Color)">
                      <SplineColorKeyFrame KeyTime="0"
                                         Value="#C6FFFFFF" />
                    </ColorAnimationUsingKeyFrames>
                    <ColorAnimationUsingKeyFrames BeginTime="0"
                                                Duration="00:00:00.001"
                                                Storyboard.TargetName="BackgroundGradient"
                                                Storyboard.TargetProperty="(Border.Background).
                    (GradientBrush.GradientStops)[3].(GradientStop.Color)">
                      <SplineColorKeyFrame KeyTime="0"
                                         Value="#6BFFFFFF" />
                    </ColorAnimationUsingKeyFrames>
                  </Storyboard>
                </VisualState>
                <VisualState x:Name="Disabled" />
              </VisualStateGroup>
            </VisualStateManager.VisualStateGroups>
            <Grid Background="#11FFFFFF"
                FlowDirection="LeftToRight"
                HorizontalAlignment="Center"
                Height="18"
                Margin="0"
                VerticalAlignment="Center"
                Width="19">
              <Grid.ColumnDefinitions>
                <ColumnDefinition Width="20*" />
                <ColumnDefinition Width="20*" />
                <ColumnDefinition Width="20*" />
                <ColumnDefinition Width="20*" />
              </Grid.ColumnDefinitions>
              <Grid.RowDefinitions>
                <RowDefinition Height="23*" />
                <RowDefinition Height="19*" />
                <RowDefinition Height="19*" />
                <RowDefinition Height="19*" />
              </Grid.RowDefinitions>
              <Border x:Name="Highlight"
                    BorderThickness="1"
                    Grid.ColumnSpan="4"
                    CornerRadius="0,0,1,1"
                    Margin="-1"
                    Opacity="1"
                    Grid.Row="0"
                    Grid.RowSpan="4">
                <Border.BorderBrush>
                  <SolidColorBrush Color="{DynamicResource ControlPressedColor}" />
                </Border.BorderBrush>
              </Border>
              <Border x:Name="Background"
                    BorderBrush="#FFFFFFFF"
                    BorderThickness="1"
                    Grid.ColumnSpan="4"
                    CornerRadius=".5"
                    Margin="0,-1,0,0"
                    Opacity="1"
                    Grid.Row="1"
                    Grid.RowSpan="3">
                <Border.Background>
                  <SolidColorBrush Color="{DynamicResource ControlDarkColor}" />
                </Border.Background>
              </Border>
              <Border x:Name="BackgroundGradient"
                    BorderBrush="#BF000000"
                    BorderThickness="1"
                    Grid.ColumnSpan="4"
                    CornerRadius=".5"
                    Margin="0,-1,0,0"
                    Opacity="1"
                    Grid.Row="1"
                    Grid.RowSpan="3">
                <Border.Background>
                  <LinearGradientBrush EndPoint=".7,1"
                                     StartPoint=".7,0">
                    <GradientStop Color="#FFFFFFFF"
                                Offset="0" />
                    <GradientStop Color="#F9FFFFFF"
                                Offset="0.375" />
                    <GradientStop Color="#E5FFFFFF"
                                Offset="0.625" />
                    <GradientStop Color="#C6FFFFFF"
                                Offset="1" />
                  </LinearGradientBrush>
                </Border.Background>
              </Border>
              <Rectangle Grid.ColumnSpan="4"
                       Grid.RowSpan="1"
                       StrokeThickness="1">
                <Rectangle.Fill>
                  <LinearGradientBrush EndPoint="0,1"
                                     StartPoint="0,0">
                    <GradientStop Color="{DynamicResource HeaderTopColor}" />
                    <GradientStop Color="{DynamicResource ControlMediumColor}"
                                Offset="1" />
                  </LinearGradientBrush>
                </Rectangle.Fill>
                <Rectangle.Stroke>
                  <LinearGradientBrush EndPoint="0.48,-1"
                                     StartPoint="0.48,1.25">
                    <GradientStop Color="#FF494949" />
                    <GradientStop Color="#FF9F9F9F"
                                Offset="1" />
                  </LinearGradientBrush>
                </Rectangle.Stroke>
              </Rectangle>
              <Path Fill="#FF2F2F2F"
                  Grid.Row="1"
                  Grid.Column="0"
                  Grid.RowSpan="3"
                  Grid.ColumnSpan="4"
                  HorizontalAlignment="Center"
                  VerticalAlignment="Center"
                  RenderTransformOrigin="0.5,0.5"
                  Margin="4,3,4,3"
                  Stretch="Fill"
                  Data="M11.426758,8.4305077 L11.749023,8.4305077 
                    L11.749023,16.331387 L10.674805,16.331387 
                    L10.674805,10.299648 L9.0742188,11.298672
                    L9.0742188,10.294277 C9.4788408,10.090176 
                    9.9094238,9.8090878 10.365967,9.4510155 
                    C10.82251,9.0929432 11.176106,8.7527733 
                    11.426758,8.4305077 z M14.65086,8.4305077 
                    L18.566387,8.4305077 L18.566387,9.3435936 
                    L15.671368,9.3435936 L15.671368,11.255703 
                    C15.936341,11.058764 16.27293,10.960293 
                    16.681133,10.960293 C17.411602,10.960293 
                    17.969301,11.178717 18.354229,11.615566 
                    C18.739157,12.052416 18.931622,12.673672
                    18.931622,13.479336 C18.931622,15.452317 
                    18.052553,16.438808 16.294415,16.438808
                    C15.560365,16.438808 14.951641,16.234707 
                    14.468243,15.826504 L14.881817,14.929531
                    C15.368796,15.326992 15.837872,15.525723 
                    16.289043,15.525723 C17.298809,15.525723 
                    17.803692,14.895514 17.803692,13.635098 
                    C17.803692,12.460618 17.305971,11.873379 
                    16.310528,11.873379 C15.83071,11.873379 
                    15.399232,12.079271 15.016094,12.491055
                    L14.65086,12.238613 z" />
              <Ellipse Grid.ColumnSpan="4"
                     Fill="#FFFFFFFF"
                     HorizontalAlignment="Center"
                     Height="3"
                     StrokeThickness="0"
                     VerticalAlignment="Center"
                     Width="3" />
              <Border x:Name="DisabledVisual"
                    BorderBrush="#B2FFFFFF"
                    BorderThickness="1"
                    Grid.ColumnSpan="4"
                    CornerRadius="0,0,.5,.5"
                    Opacity="0"
                    Grid.Row="0"
                    Grid.RowSpan="4" />
            </Grid>
          </Grid>
        </ControlTemplate>
      </Setter.Value>
    </Setter>
  </Style>

  <Style x:Key="DatePickerStyle1" TargetType="{x:Type DatePicker}">
    <Setter Property="Foreground"
          Value="#FF333333" />
    <Setter Property="IsTodayHighlighted"
          Value="True" />
    <Setter Property="SelectedDateFormat"
          Value="Short" />
    <Setter Property="Padding"
          Value="2" />
    <Setter Property="BorderThickness"
          Value="1" />
    <Setter Property="HorizontalContentAlignment"
          Value="Stretch" />
    <!--Set CalendarStyle to DatePickerCalendarStyle.-->
    <!--<Setter Property="CalendarStyle"
          Value="{DynamicResource DatePickerCalendarStyle}" />-->

    <!-- カレンダースタイルを設定 -->
    <Setter Property="CalendarStyle"
          Value="{StaticResource ClenderStyle1}" />
    
    <Setter Property="Template">
      <Setter.Value>
        <ControlTemplate TargetType="{x:Type DatePicker}">
          <Border BorderThickness="{TemplateBinding BorderThickness}"
                Padding="{TemplateBinding Padding}">
            <Border.BorderBrush>
              <LinearGradientBrush EndPoint="0.5,1"
                                 StartPoint="0.5,0">
                <GradientStop Color="{DynamicResource BorderLightColor}"
                            Offset="0" />
                <GradientStop Color="{DynamicResource BorderDarkColor}"
                            Offset="1" />
              </LinearGradientBrush>
            </Border.BorderBrush>
            <Border.Background>
              <LinearGradientBrush EndPoint="0.5,1"
                                 StartPoint="0.5,0">
                <GradientStop Color="{DynamicResource HeaderTopColor}"
                            Offset="0" />
                <GradientStop Color="{DynamicResource ControlMediumColor}"
                            Offset="1" />
              </LinearGradientBrush>
            </Border.Background>
            <VisualStateManager.VisualStateGroups>
              <VisualStateGroup x:Name="CommonStates">
                <VisualState x:Name="Normal" />
                <VisualState x:Name="Disabled">
                  <Storyboard>
                    <DoubleAnimation Duration="0"
                                   To="1"
                                   Storyboard.TargetProperty="Opacity"
                                   Storyboard.TargetName="PART_DisabledVisual" />
                  </Storyboard>
                </VisualState>

                <!-- Validation.Errorの時の背景色設定 -->                
                <VisualState x:Name="InvalidUnfocused">
                  <Storyboard>
                    <ColorAnimation Storyboard.TargetName="PART_TextBox" 
                                    Storyboard.TargetProperty="(Border.Background).
                                    (SolidColorBrush.Color)" To="Pink" Duration="0" />
                    <ColorAnimation Storyboard.TargetName="PART_TextBox" 
                                    Storyboard.TargetProperty="(Foreground).
                                    (SolidColorBrush.Color)" To="Red" Duration="0" />
                    <BooleanAnimationUsingKeyFrames Storyboard.TargetName="PART_TextBox" 
                                    Storyboard.TargetProperty="(ToolTipService.IsEnabled)" Duration="0">
                      <DiscreteBooleanKeyFrame Value="True" KeyTime="0" />
                    </BooleanAnimationUsingKeyFrames>
                  </Storyboard>
                </VisualState>
                
              </VisualStateGroup>
            </VisualStateManager.VisualStateGroups>

            <Grid x:Name="PART_Root"
                HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                VerticalAlignment="{TemplateBinding VerticalContentAlignment}">
              <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*" />
                <ColumnDefinition Width="Auto" />
              </Grid.ColumnDefinitions>
              <Button x:Name="PART_Button"
                    Grid.Column="1"
                    Foreground="{TemplateBinding Foreground}"
                    Focusable="False"
                    HorizontalAlignment="Left"
                    Margin="3,0,3,0"
                    Grid.Row="0"
                    Style="{StaticResource DropDownButtonStyle}"
                    VerticalAlignment="Top" />
              <DatePickerTextBox x:Name="PART_TextBox"
                               Grid.Column="0"
                               Foreground="{TemplateBinding Foreground}"
                               Focusable="{TemplateBinding Focusable}"
                               HorizontalContentAlignment="Stretch"
                               Grid.Row="0"
                               VerticalContentAlignment="Stretch"
                               ToolTipService.IsEnabled ="False">
               <!-- ToolTipにエラーを表示する -->
                <DatePickerTextBox.ToolTip>
                  <TextBlock Text="{Binding Path=(Validation.Errors)[0].ErrorContent,
                                          RelativeSource={RelativeSource TemplatedParent}}"/>
                </DatePickerTextBox.ToolTip>
              </DatePickerTextBox>
              <Grid x:Name="PART_DisabledVisual"
                  Grid.ColumnSpan="2"
                  Grid.Column="0"
                  IsHitTestVisible="False"
                  Opacity="0"
                  Grid.Row="0">
                <Grid.ColumnDefinitions>
                  <ColumnDefinition Width="*" />
                  <ColumnDefinition Width="Auto" />
                </Grid.ColumnDefinitions>
                <Rectangle Grid.Column="0"
                         Fill="#A5FFFFFF"
                         RadiusY="1"
                         Grid.Row="0"
                         RadiusX="1" />
                <Rectangle Grid.Column="1"
                         Fill="#A5FFFFFF"
                         Height="18"
                         Margin="3,0,3,0"
                         RadiusY="1"
                         Grid.Row="0"
                         RadiusX="1"
                         Width="19" />
                <Popup x:Name="PART_Popup"
                     AllowsTransparency="True"
                     Placement="Bottom"
                     PlacementTarget="{Binding ElementName=PART_TextBox}"
                     StaysOpen="False" />
              </Grid>
            </Grid>
          </Border>
        </ControlTemplate>
      </Setter.Value>
    </Setter>
  </Style>
</ResourceDictionary>

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<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

<!--In this example, an implecit style for Calendar is defined elsewhere

in the application. DatePickerCalendarStyle is based on the implicit

style so that the DatePicker will use the application's calendar style.-->

<!--<Style x:Key="DatePickerCalendarStyle"

TargetType="{x:Type Calendar}"

BasedOn="{StaticResource {x:Type Calendar}}" />-->

<Style x:Key="DropDownButtonStyle"

TargetType="Button">

<Setter.Value>

<Grid>

<VisualStateManager.VisualStateGroups>

<VisualStateGroup.Transitions>

<VisualTransition GeneratedDuration="0:0:0.1"

To="MouseOver" />

<VisualTransition GeneratedDuration="0:0:0.1"

To="Pressed" />

</VisualStateGroup.Transitions>

<ColorAnimationUsingKeyFrames BeginTime="0"

Duration="00:00:00.001"

Storyboard.TargetName="BackgroundGradient"

Storyboard.TargetProperty="(Border.Background).

(GradientBrush.GradientStops)[1].(GradientStop.Color)">

<SplineColorKeyFrame KeyTime="0"

Value="#F2FFFFFF" />

</ColorAnimationUsingKeyFrames>

<ColorAnimationUsingKeyFrames BeginTime="0"

Duration="00:00:00.001"

Storyboard.TargetName="BackgroundGradient"

Storyboard.TargetProperty="(Border.Background).

(GradientBrush.GradientStops)[2].(GradientStop.Color)">

<SplineColorKeyFrame KeyTime="0"

Value="#CCFFFFFF" />

</ColorAnimationUsingKeyFrames>

<ColorAnimation Duration="0"

To="#FF448DCA"

Storyboard.TargetProperty="(Border.Background).

(SolidColorBrush.Color)"

Storyboard.TargetName="Background" />

<ColorAnimationUsingKeyFrames BeginTime="0"

Duration="00:00:00.001"

Storyboard.TargetName="BackgroundGradient"

Storyboard.TargetProperty="(Border.Background).

(GradientBrush.GradientStops)[3].(GradientStop.Color)">

<SplineColorKeyFrame KeyTime="0"

Value="#7FFFFFFF" />

</ColorAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

<ColorAnimationUsingKeyFrames BeginTime="0"

Duration="00:00:00.001"

Storyboard.TargetName="Background"

Storyboard.TargetProperty="(Border.Background).

(SolidColorBrush.Color)">

<SplineColorKeyFrame KeyTime="0"

Value="#FF448DCA" />

</ColorAnimationUsingKeyFrames>

<DoubleAnimationUsingKeyFrames BeginTime="0"

Duration="00:00:00.001"

Storyboard.TargetProperty="(UIElement.Opacity)"

Storyboard.TargetName="Highlight">

<SplineDoubleKeyFrame KeyTime="0"

Value="1" />

</DoubleAnimationUsingKeyFrames>

<ColorAnimationUsingKeyFrames BeginTime="0"

Duration="00:00:00.001"

Storyboard.TargetName="BackgroundGradient"

Storyboard.TargetProperty="(Border.Background).

(GradientBrush.GradientStops)[0].(GradientStop.Color)">

<SplineColorKeyFrame KeyTime="0"

Value="#F4FFFFFF" />

</ColorAnimationUsingKeyFrames>

<ColorAnimationUsingKeyFrames BeginTime="0"

Duration="00:00:00.001"

Storyboard.TargetName="BackgroundGradient"

Storyboard.TargetProperty="(Border.Background).

(GradientBrush.GradientStops)[1].(GradientStop.Color)">

<SplineColorKeyFrame KeyTime="0"

Value="#EAFFFFFF" />

</ColorAnimationUsingKeyFrames>

<ColorAnimationUsingKeyFrames BeginTime="0"

Duration="00:00:00.001"

Storyboard.TargetName="BackgroundGradient"

Storyboard.TargetProperty="(Border.Background).

(GradientBrush.GradientStops)[2].(GradientStop.Color)">

<SplineColorKeyFrame KeyTime="0"

Value="#C6FFFFFF" />

</ColorAnimationUsingKeyFrames>

<ColorAnimationUsingKeyFrames BeginTime="0"

Duration="00:00:00.001"

Storyboard.TargetName="BackgroundGradient"

Storyboard.TargetProperty="(Border.Background).

(GradientBrush.GradientStops)[3].(GradientStop.Color)">

<SplineColorKeyFrame KeyTime="0"

Value="#6BFFFFFF" />

</ColorAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

</VisualStateGroup>

</VisualStateManager.VisualStateGroups>

<Grid Background="#11FFFFFF"

FlowDirection="LeftToRight"

HorizontalAlignment="Center"

Height="18"

Margin="0"

VerticalAlignment="Center"

Width="19">

<Grid.ColumnDefinitions>

</Grid.ColumnDefinitions>

<Grid.RowDefinitions>

</Grid.RowDefinitions>

<Border x:Name="Highlight"

BorderThickness="1"

Grid.ColumnSpan="4"

CornerRadius="0,0,1,1"

Margin="-1"

Opacity="1"

Grid.Row="0"

Grid.RowSpan="4">

<Border.BorderBrush>

</Border.BorderBrush>

</Border>

<Border x:Name="Background"

BorderBrush="#FFFFFFFF"

BorderThickness="1"

Grid.ColumnSpan="4"

CornerRadius=".5"

Margin="0,-1,0,0"

Opacity="1"

Grid.Row="1"

Grid.RowSpan="3">

<Border.Background>

</Border.Background>

</Border>

<Border x:Name="BackgroundGradient"

BorderBrush="#BF000000"

BorderThickness="1"

Grid.ColumnSpan="4"

CornerRadius=".5"

Margin="0,-1,0,0"

Opacity="1"

Grid.Row="1"

Grid.RowSpan="3">

<Border.Background>

<LinearGradientBrush EndPoint=".7,1"

StartPoint=".7,0">

<GradientStop Color="#FFFFFFFF"

Offset="0" />

<GradientStop Color="#F9FFFFFF"

Offset="0.375" />

<GradientStop Color="#E5FFFFFF"

Offset="0.625" />

<GradientStop Color="#C6FFFFFF"

Offset="1" />

</LinearGradientBrush>

</Border.Background>

</Border>

<Rectangle Grid.ColumnSpan="4"

Grid.RowSpan="1"

StrokeThickness="1">

<Rectangle.Fill>

<LinearGradientBrush EndPoint="0,1"

StartPoint="0,0">

<GradientStop Color="{DynamicResource ControlMediumColor}"

Offset="1" />

</LinearGradientBrush>

</Rectangle.Fill>

<Rectangle.Stroke>

<LinearGradientBrush EndPoint="0.48,-1"

StartPoint="0.48,1.25">

<GradientStop Color="#FF9F9F9F"

Offset="1" />

</LinearGradientBrush>

</Rectangle.Stroke>

</Rectangle>

<Path Fill="#FF2F2F2F"

Grid.Row="1"

Grid.Column="0"

Grid.RowSpan="3"

Grid.ColumnSpan="4"

HorizontalAlignment="Center"

VerticalAlignment="Center"

RenderTransformOrigin="0.5,0.5"

Margin="4,3,4,3"

Stretch="Fill"

Data="M11.426758,8.4305077 L11.749023,8.4305077

L11.749023,16.331387 L10.674805,16.331387

L10.674805,10.299648 L9.0742188,11.298672

L9.0742188,10.294277 C9.4788408,10.090176

9.9094238,9.8090878 10.365967,9.4510155

C10.82251,9.0929432 11.176106,8.7527733

11.426758,8.4305077 z M14.65086,8.4305077

L18.566387,8.4305077 L18.566387,9.3435936

L15.671368,9.3435936 L15.671368,11.255703

C15.936341,11.058764 16.27293,10.960293

16.681133,10.960293 C17.411602,10.960293

17.969301,11.178717 18.354229,11.615566

C18.739157,12.052416 18.931622,12.673672

18.931622,13.479336 C18.931622,15.452317

18.052553,16.438808 16.294415,16.438808

C15.560365,16.438808 14.951641,16.234707

14.468243,15.826504 L14.881817,14.929531

C15.368796,15.326992 15.837872,15.525723

16.289043,15.525723 C17.298809,15.525723

17.803692,14.895514 17.803692,13.635098

C17.803692,12.460618 17.305971,11.873379

16.310528,11.873379 C15.83071,11.873379

15.399232,12.079271 15.016094,12.491055

L14.65086,12.238613 z" />

<Ellipse Grid.ColumnSpan="4"

Fill="#FFFFFFFF"

HorizontalAlignment="Center"

Height="3"

StrokeThickness="0"

VerticalAlignment="Center"

Width="3" />

<Border x:Name="DisabledVisual"

BorderBrush="#B2FFFFFF"

BorderThickness="1"

Grid.ColumnSpan="4"

CornerRadius="0,0,.5,.5"

Opacity="0"

Grid.Row="0"

Grid.RowSpan="4" />

</Grid>

</ControlTemplate>

</Setter.Value>

</Setter>

</Style>

<Setter Property="Foreground"

Value="#FF333333" />

<Setter Property="IsTodayHighlighted"

Value="True" />

<Setter Property="SelectedDateFormat"

Value="Short" />

<Setter Property="Padding"

Value="2" />

<Setter Property="BorderThickness"

Value="1" />

<Setter Property="HorizontalContentAlignment"

Value="Stretch" />

<!--<Setter Property="CalendarStyle"

Value="{DynamicResource DatePickerCalendarStyle}" />-->

<Setter Property="CalendarStyle"

Value="{StaticResource ClenderStyle1}" />

<Setter.Value>

<Border BorderThickness="{TemplateBinding BorderThickness}"

Padding="{TemplateBinding Padding}">

<Border.BorderBrush>

<LinearGradientBrush EndPoint="0.5,1"

StartPoint="0.5,0">

<GradientStop Color="{DynamicResource BorderLightColor}"

Offset="0" />

<GradientStop Color="{DynamicResource BorderDarkColor}"

Offset="1" />

</LinearGradientBrush>

</Border.BorderBrush>

<Border.Background>

<LinearGradientBrush EndPoint="0.5,1"

StartPoint="0.5,0">

<GradientStop Color="{DynamicResource HeaderTopColor}"

Offset="0" />

<GradientStop Color="{DynamicResource ControlMediumColor}"

Offset="1" />

</LinearGradientBrush>

</Border.Background>

<VisualStateManager.VisualStateGroups>

<DoubleAnimation Duration="0"

To="1"

Storyboard.TargetProperty="Opacity"

Storyboard.TargetName="PART_DisabledVisual" />

</Storyboard>

</VisualState>

<ColorAnimation Storyboard.TargetName="PART_TextBox"

Storyboard.TargetProperty="(Border.Background).

(SolidColorBrush.Color)" To="Pink" Duration="0" />

<ColorAnimation Storyboard.TargetName="PART_TextBox"

Storyboard.TargetProperty="(Foreground).

(SolidColorBrush.Color)" To="Red" Duration="0" />

<BooleanAnimationUsingKeyFrames Storyboard.TargetName="PART_TextBox"

Storyboard.TargetProperty="(ToolTipService.IsEnabled)" Duration="0">

</BooleanAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

</VisualStateGroup>

</VisualStateManager.VisualStateGroups>

<Grid x:Name="PART_Root"

HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"

VerticalAlignment="{TemplateBinding VerticalContentAlignment}">

<Grid.ColumnDefinitions>

</Grid.ColumnDefinitions>

<Button x:Name="PART_Button"

Grid.Column="1"

Foreground="{TemplateBinding Foreground}"

Focusable="False"

HorizontalAlignment="Left"

Margin="3,0,3,0"

Grid.Row="0"

Style="{StaticResource DropDownButtonStyle}"

VerticalAlignment="Top" />

<DatePickerTextBox x:Name="PART_TextBox"

Grid.Column="0"

Foreground="{TemplateBinding Foreground}"

Focusable="{TemplateBinding Focusable}"

HorizontalContentAlignment="Stretch"

Grid.Row="0"

VerticalContentAlignment="Stretch"

ToolTipService.IsEnabled ="False">

<DatePickerTextBox.ToolTip>

<TextBlock Text="{Binding Path=(Validation.Errors)[0].ErrorContent,

RelativeSource={RelativeSource TemplatedParent}}"/>

</DatePickerTextBox.ToolTip>

</DatePickerTextBox>

<Grid x:Name="PART_DisabledVisual"

Grid.ColumnSpan="2"

Grid.Column="0"

IsHitTestVisible="False"

Opacity="0"

Grid.Row="0">

<Grid.ColumnDefinitions>

</Grid.ColumnDefinitions>

<Rectangle Grid.Column="0"

Fill="#A5FFFFFF"

RadiusY="1"

Grid.Row="0"

RadiusX="1" />

<Rectangle Grid.Column="1"

Fill="#A5FFFFFF"

Height="18"

Margin="3,0,3,0"

RadiusY="1"

Grid.Row="0"

RadiusX="1"

Width="19" />

<Popup x:Name="PART_Popup"

AllowsTransparency="True"

Placement="Bottom"

PlacementTarget="{Binding ElementName=PART_TextBox}"

StaysOpen="False" />

</Grid>

</Border>

</ControlTemplate>

</Setter.Value>

</Setter>

</Style>

</ResourceDictionary>

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
  <Style x:Key="{x:Type ToolTip}"
       TargetType="ToolTip">
    <Setter Property="OverridesDefaultStyle"
          Value="true" />
    <Setter Property="HasDropShadow"
          Value="True" />
    <Setter Property="Template">
      <Setter.Value>
        <ControlTemplate TargetType="ToolTip">
          <Border Name="Border"
                BorderThickness="1"
                Width="{TemplateBinding Width}"
                Height="{TemplateBinding Height}">
            <Border.Background>
              <LinearGradientBrush StartPoint="0,0"
                                 EndPoint="0,1">
                <LinearGradientBrush.GradientStops>
                  <GradientStopCollection>
                    <GradientStop Color="{DynamicResource ControlLightColor}"
                                Offset="0.0" />
                    <GradientStop Color="{DynamicResource ControlMediumColor}"
                                Offset="1.0" />
                  </GradientStopCollection>
                </LinearGradientBrush.GradientStops>
              </LinearGradientBrush>

            </Border.Background>
            <Border.BorderBrush>
              <SolidColorBrush Color="{DynamicResource BorderMediumColor}" />
            </Border.BorderBrush>
            <ContentPresenter Margin="4"
                            HorizontalAlignment="Left"
                            VerticalAlignment="Top" />
          </Border>
          <ControlTemplate.Triggers>
            <Trigger Property="HasDropShadow"
                   Value="true">
              <Setter TargetName="Border"
                    Property="CornerRadius"
                    Value="4" />
              <Setter TargetName="Border"
                    Property="SnapsToDevicePixels"
                    Value="true" />
            </Trigger>
          </ControlTemplate.Triggers>
        </ControlTemplate>
      </Setter.Value>
    </Setter>
  </Style>
</ResourceDictionary>

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

<Style x:Key="{x:Type ToolTip}"

TargetType="ToolTip">

<Setter Property="OverridesDefaultStyle"

Value="true" />

<Setter Property="HasDropShadow"

Value="True" />

<Setter.Value>

<Border Name="Border"

BorderThickness="1"

Width="{TemplateBinding Width}"

Height="{TemplateBinding Height}">

<Border.Background>

<LinearGradientBrush StartPoint="0,0"

EndPoint="0,1">

<LinearGradientBrush.GradientStops>

<GradientStop Color="{DynamicResource ControlLightColor}"

Offset="0.0" />

<GradientStop Color="{DynamicResource ControlMediumColor}"

Offset="1.0" />

</GradientStopCollection>

</LinearGradientBrush.GradientStops>

</LinearGradientBrush>

</Border.Background>

<Border.BorderBrush>

</Border.BorderBrush>

<ContentPresenter Margin="4"

HorizontalAlignment="Left"

VerticalAlignment="Top" />

</Border>

<ControlTemplate.Triggers>

<Trigger Property="HasDropShadow"

Value="true">

<Setter TargetName="Border"

Property="CornerRadius"

Value="4" />

<Setter TargetName="Border"

Property="SnapsToDevicePixels"

Value="true" />

</Trigger>

</ControlTemplate.Triggers>

</ControlTemplate>

</Setter.Value>

</Setter>

</Style>

</ResourceDictionary>

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Microsoft.TeamFoundation.MVVMでValidation

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Microsoft.TeamFoundation.MVVMでValidation

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