控件绑定Command

情况一：普通按钮单击事件

<Button  Content="Button1" 
         Command="{Binding CommandSave}" 
         IsEnabled="{Binding IsEnableSave,Mode=TwoWay}" 
         Margin="10,0,0,0"  Width="60" Height="23"
         VerticalContentAlignment="Center" HorizontalContentAlignment="Center"  />

情况二：特殊事件处理(使用System.Windows.Interactivity处理)

引入命名空间：

xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"

 

<TextBox x:Name="TextBox1"
         Grid.Column="0" Grid.Row="0"
         HorizontalAlignment="Left" VerticalAlignment="Center"
         Margin="0,0,0,0" Width="160" Height="23">
         <i:Interaction.Triggers>
                 <i:EventTrigger EventName="TextChanged">
                          <i:InvokeCommandAction Command="{Binding CommandPageIndexChanged}" CommandParameter="{Binding ElementName=ss,Path=Text}"/>
                 </i:EventTrigger>
         </i:Interaction.Triggers>
 </TextBox>

情况三：绑定键盘事件（求最优解决方案）

 方案一：只能借用CodeBehind来调用ViewModel的Command

<TextBox x:Name="TextBox1"
         Grid.Column="0" Grid.Row="0"
         KeyDown="txtFFaraCode_KeyDown_1"/>

 

void txtFFaraCode_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.Key ==Key.Enter)
            {
                ViewModels.QuoteWinNewVM vm = (ViewModels.QuoteWinNewVM)this.DataContext;
                vm.CommandFaraCodeKeyDown.Execute();
            }
        }

 方案二：用KeyTrigger最好了，然后在ViewModel实现Command  此方法测试失败，求解决方案

 <TextBox x:Name="TextBox1" >
         <i:Interaction.Triggers>
                 <input:KeyTrigger Key="Enter" FiredOn="KeyUp">
                         <i:InvokeCommandAction Command="{Binding CommandFaraCodeKeyDown}"
                                                CommandParameter="{Binding ElementName=ss,Path=Text}"/>
                 </input:KeyTrigger>
          </i:Interaction.Triggers>
 </TextBox>