我會用不同的控件模板:模板,進行微調時文本框不集中,而文本框的重點是我會使用常規的模板,讓文本選擇。 需要替換TextBox控件模板。
<ControlTemplate TargetType="{x:Type TextBox}"
x:Key="ControlTemplateTextBoxNormal">
<Border Background="{TemplateBinding Background}"
BorderThickness="{TemplateBinding BorderThickness}"
BorderBrush="{TemplateBinding BorderBrush}">
<Grid>
<Border x:Name="ErrorElement"
Visibility="Collapsed"
BorderThickness="1.25"
BorderBrush="{StaticResource BrushError}">
<Grid>
<Polygon x:Name="toolTipCorner"
Panel.ZIndex="2"
Margin="-1"
Points="9,9 9,0 0,0"
Fill="{StaticResource BrushError}"
HorizontalAlignment="Right"
VerticalAlignment="Top">
<Polygon.ToolTip>
<ToolTip Style="{StaticResource ToolTipStyleError}"
Content="{Binding (Validation.Errors)[0].ErrorContent, RelativeSource={RelativeSource TemplatedParent}}" />
</Polygon.ToolTip>
</Polygon>
</Grid>
</Border>
<ScrollViewer x:Name="PART_ContentHost"
Padding="{TemplateBinding Padding}"
BorderThickness="0"
IsTabStop="False"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
TextElement.Foreground="{TemplateBinding Foreground}" />
<TextBlock Text="{Binding Path=(behaviors:TextBoxBehaviors.WatermarkText), RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type TextBox}}}"
IsHitTestVisible="False"
Visibility="Collapsed"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
Margin="{TemplateBinding Padding}"
Foreground="Gray"
x:Name="watermark" />
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsFocused"
Value="False">
<Setter Property="Visibility"
TargetName="watermark"
Value="Visible" />
</Trigger>
<Trigger Property="Validation.HasError"
Value="True">
<Setter Property="Visibility"
TargetName="ErrorElement"
Value="Visible" />
</Trigger>
<!--<Trigger Property="behaviors:TextBoxBehaviors.WatermarkText"
Value="True">
<Setter Property="Visibility"
TargetName="ErrorElement"
Value="Visible" />
</Trigger>-->
</ControlTemplate.Triggers>
</ControlTemplate>
<Style TargetType="{x:Type TextBox}"
BasedOn="{StaticResource {x:Type TextBox}}"
x:Key="TextBoxStyleTrimming">
<Setter Property="BorderThickness"
Value="1" />
<Setter Property="Validation.ErrorTemplate"
Value="{x:Null}" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type TextBox}">
<Border Background="{TemplateBinding Background}"
BorderThickness="{TemplateBinding BorderThickness}"
BorderBrush="{TemplateBinding BorderBrush}">
<Grid>
<Border x:Name="ErrorElement"
Visibility="Collapsed"
BorderThickness="1.25"
BorderBrush="{StaticResource BrushError}">
<Grid>
<Polygon x:Name="toolTipCorner"
Panel.ZIndex="2"
Margin="-1"
Points="9,9 9,0 0,0"
Fill="{StaticResource BrushError}"
HorizontalAlignment="Right"
VerticalAlignment="Top">
<Polygon.ToolTip>
<ToolTip Style="{StaticResource ToolTipStyleError}"
Content="{Binding (Validation.Errors)[0].ErrorContent, RelativeSource={RelativeSource TemplatedParent}}" />
</Polygon.ToolTip>
</Polygon>
</Grid>
</Border>
<TextBlock Padding="{TemplateBinding Padding}"
Text="{TemplateBinding Text}"
TextTrimming="CharacterEllipsis"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
TextElement.Foreground="{TemplateBinding Foreground}" />
<TextBlock Text="{Binding Path=(behaviors:TextBoxBehaviors.WatermarkText), RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type TextBox}}}"
IsHitTestVisible="False"
Visibility="Collapsed"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
Margin="{TemplateBinding Padding}"
Foreground="Gray"
x:Name="watermark" />
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsFocused"
Value="False">
<Setter Property="Visibility"
TargetName="watermark"
Value="Visible" />
</Trigger>
<Trigger Property="Validation.HasError"
Value="True">
<Setter Property="Visibility"
TargetName="ErrorElement"
Value="Visible" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="IsKeyboardFocused"
Value="True">
<Setter Property="Template"
Value="{StaticResource ControlTemplateTextBoxNormal}" />
</Trigger>
</Style.Triggers>
</Style>
如果您使用mvvm,您可以修剪存儲在屬性中的數值dat。在屬性更改時,UI上的值也會更新。 – Akanksha 2012-04-19 11:40:16
@DDzire:我同意我可以這樣做,但我認爲這實際上是一種顯示行爲,我不想在每次處理這種顯示時在我的viewmodel中放入一些修剪邏輯 – Guillaume 2012-04-19 11:45:16