waterMarkTextBox
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:MyWPFCustomControls" > <Style TargetType="{x:Type local:WaterMarkTextBox}">
<Setter Property="Background" Value="#ffffff"/>
<Setter Property="VerticalContentAlignment" Value="Center" />
<Setter Property="BorderBrush" Value="#5d7fad"></Setter>
<Setter Property="FontWeight" Value="Normal"></Setter>
<Setter Property="Foreground" Value="#0c223a"></Setter>
<Setter Property="Padding" Value="5,0,5,2"></Setter>
<Setter Property="Margin" Value=""/>
<Setter Property="FontSize" Value=""></Setter>
<Setter Property="FontFamily" Value="Arial"></Setter>
<Setter Property="FlowDirection" Value="LeftToRight"></Setter>
<Setter Property="Template" >
<Setter.Value>
<ControlTemplate TargetType="{x:Type local:WaterMarkTextBox}" >
<Border Background="{TemplateBinding Background}" x:Name="Bd" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" CornerRadius="">
<Grid> <ScrollViewer x:Name="PART_ContentHost" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
<ContentPresenter x:Name="PART_WatermarkHost" Content="{TemplateBinding Watermark}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" IsHitTestVisible="False" Margin="{TemplateBinding Padding}" Visibility="Collapsed" VerticalAlignment="{TemplateBinding VerticalContentAlignment}">
<ContentPresenter.ContentTemplate>
<DataTemplate>
<ContentControl Content="{Binding}" Foreground="Gray" Focusable="False"/>
</DataTemplate>
</ContentPresenter.ContentTemplate>
</ContentPresenter>
</Grid> </Border>
<ControlTemplate.Triggers>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsFocused" Value="False"/>
<Condition Property="Text" Value=""/>
</MultiTrigger.Conditions>
<Setter Property="Visibility" TargetName="PART_WatermarkHost" Value="Visible"/>
</MultiTrigger>
<Trigger Property="IsEnabled" Value="False">
<Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.ControlBrushKey}}" TargetName="Bd"/>
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
</Trigger>
<Trigger Property="IsFocused" Value="True" >
<Setter TargetName="Bd" Property="Effect">
<Setter.Value>
<DropShadowEffect ShadowDepth="" BlurRadius="" Color="#fe1C67C7"></DropShadowEffect>
</Setter.Value>
</Setter>
</Trigger>
<Trigger Property="IsMouseOver" Value="True">
<Setter TargetName="Bd" Property="Effect">
<Setter.Value>
<DropShadowEffect ShadowDepth="" BlurRadius="" Color="#Fe9DBADF"></DropShadowEffect>
</Setter.Value>
</Setter>
</Trigger>
<Trigger Property="Height" Value="Auto">
<Setter Property="MinHeight" Value=""/>
</Trigger>
<Trigger Property="Validation.HasError" Value="True">
<Setter TargetName="Bd" Property="BorderBrush" Value="Red"/>
<Setter Property="ToolTip">
<Setter.Value>
<Binding
Path="(Validation.Errors).CurrentItem.ErrorContent"
RelativeSource="{x:Static RelativeSource.Self}"
/>
</Setter.Value>
</Setter>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="BorderThickness" Value="">
<!--<Setter.Value>
<Thickness Bottom="" Left="" Right="" Top=""></Thickness>
</Setter.Value>-->
</Setter>
<Setter Property="Validation.ErrorTemplate">
<Setter.Value>
<ControlTemplate>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers> <!--<Trigger Property="Attach:AttachProperty.IsMandatory" Value="True">
<Setter Property="Background" Value="LightYellow"/>
</Trigger>-->
<!--<Trigger Property="IsFocused" Value="True" >
<Setter Property="Button.Effect">
<Setter.Value>
<DropShadowEffect ShadowDepth="" BlurRadius="" Color="#fe1C67C7"></DropShadowEffect>
</Setter.Value>
</Setter>
</Trigger>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Button.Effect">
<Setter.Value>
<DropShadowEffect ShadowDepth="" BlurRadius="" Color="#Fe9DBADF"></DropShadowEffect>
</Setter.Value>
</Setter>
</Trigger>-->
<!--<Trigger Property="Validation.HasError" Value="True"> <Setter Property="FontFamily" Value="Arial"/>
<Setter Property="FontSize" Value=""/>
<Setter Property="ForceCursor" Value="False"/>
<Setter Property="Foreground" Value="Gray"/>
<Setter Property="FontWeight" Value="Normal"/>
<Setter Property="HorizontalContentAlignment" Value="Left"/>
<Setter Property="VerticalContentAlignment" Value="Center"/>
<Setter Property="Padding" Value="5,0,5,2"></Setter>
<Setter Property="Margin" Value=""/>
<Setter Property="MinHeight" Value=""/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type TextBox}">
<Border Background="#ffffff" BorderBrush="Red" x:Name="Bd" CornerRadius="" BorderThickness="">
<Grid>
<TextBlock x:Name="PART_MyWaterMarkTextBlock" Visibility="Collapsed" VerticalAlignment="Center" HorizontalAlignment="Left" Padding="5,0,0,3" Foreground="Gray"/>
<ScrollViewer x:Name="PART_ContentHost" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
</Grid>
</Border> </ControlTemplate>
</Setter.Value>
</Setter>
</Trigger>-->
</Style.Triggers>
</Style> </ResourceDictionary>
xaml
public class WaterMarkTextBox:TextBox
{ public string Watermark
{
get { return (string)GetValue(WatermarkProperty); }
set { SetValue(WatermarkProperty, value); }
} // Using a DependencyProperty as the backing store for Watermark. This enables animation, styling, binding, etc...
public static readonly DependencyProperty WatermarkProperty =
DependencyProperty.Register("Watermark", typeof(string), typeof(WaterMarkTextBox), new PropertyMetadata(null)); public WaterMarkTextBox()
{ }
}
cs
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