我正在创建一个 WPF 对话框。它类似于我们平常使用的 messagebox
,有一个 ok
和 cancel
按钮。如何创建这样一个对话框,使得在打开对话框时默认选中 Ok
按钮?
如何设置窗口的默认按钮
将默认按钮的IsDefault属性设置为true。
请注意,您还可以通过将按钮的IsCancel属性设置为true来设置窗口的取消按钮。
如何设置窗口中被选中(聚焦)的按钮
如果您想选择特定的按钮,请使用Focus方法,例如:
yourButton.Focus();
当窗口加载时(在 Window_Loaded 事件中),您可以这样做。
要在窗口打开时选择特定按钮,请确保它的 IsTabStop 属性 设置为 true,并确保它的 TabIndex 属性 小于窗口上其他任何控件的值。
只需创建一个新的按钮模板,并为IsDefault=Tue状态更改外观。 我刚刚创建了一个样式并修改了状态。
<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:System="clr-namespace:System;assembly=mscorlib"
xmlns:Microsoft_Windows_Themes="clr-namespace:Microsoft.Windows.Themes;assembly=PresentationFramework.Aero"
x:Class="WpfApplication7.Window3"
x:Name="Window"
Title="Window3"
Width="640" Height="480" FocusManager.FocusedElement="{Binding ElementName=test}">
<Window.Resources>
<Style x:Key="ButtonFocusVisual">
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate>
<Rectangle Margin="2"
Stroke="red" StrokeThickness="1"
SnapsToDevicePixels="true" StrokeDashArray="1 2"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="ButtonStyle1" TargetType="{x:Type Button}">
<Setter Property="FocusVisualStyle" Value="{StaticResource ButtonFocusVisual}"/>
<Setter Property="HorizontalContentAlignment" Value="Center"/>
<Setter Property="VerticalContentAlignment" Value="Center"/>
<Setter Property="Padding" Value="1"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border x:Name="border" BorderThickness="1" BorderBrush="#FF040000" CornerRadius="5">
<Border.Background>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FF7A7A7A" Offset="0"/>
<GradientStop Color="#FFE7E7E7" Offset="1"/>
</LinearGradientBrush>
</Border.Background>
<ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsDefault" Value="True">
<Setter Property="Background" TargetName="border">
<Setter.Value>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FFA76F6F" Offset="0"/>
<GradientStop Color="#FFE7E7E7" Offset="1"/>
</LinearGradientBrush>
</Setter.Value>
</Setter>
</Trigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsFocused" Value="True"/>
<Condition Property="IsDefault" Value="True"/>
</MultiTrigger.Conditions>
<Setter Property="Background" TargetName="border">
<Setter.Value>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FFC2BE5B" Offset="0.007"/>
<GradientStop Color="#FFE7E7E7" Offset="1"/>
</LinearGradientBrush>
</Setter.Value>
</Setter>
</MultiTrigger>
<Trigger Property="IsPressed" Value="True">
<Setter Property="BorderBrush" TargetName="border" Value="#FF01641D"/>
<Setter Property="BorderThickness" TargetName="border" Value="2"/>
<Setter Property="Background" TargetName="border">
<Setter.Value>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FF528159" Offset="0"/>
<GradientStop Color="#FFE7E7E7" Offset="1"/>
</LinearGradientBrush>
</Setter.Value>
</Setter>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>
<Grid x:Name="LayoutRoot">
<Button x:Name="test" Content="Button" HorizontalAlignment="Left" Height="26" Margin="130,157,0,0" VerticalAlignment="Top" Width="164" Style="{DynamicResource ButtonStyle1}" IsDefault="True"/>
<Button Content="Button" Height="26" Margin="298,157,162,0" VerticalAlignment="Top" Style="{DynamicResource ButtonStyle1}"/>
<Button Content="Button" HorizontalAlignment="Right" Height="26" Margin="0,157,-6,0" VerticalAlignment="Top" Width="164" Style="{DynamicResource ButtonStyle1}"/>
</Grid>
IsDefault是什么情况?
<Button Command="{Binding MyButtonCommand}"
Content="My Button Text"
IsDefault="True"/>