WPF委托命令DelegateCommand的传参方式

首先引用  Microsoft.Practices.Prism

MVVM模式代码如下：

XAML代码：

<!-- 无参方式 -->
<Button Content="Test Command" Command="{Binding TestCommand}" />

<!-- 将自己作为参数 -->
<Button Content="Test Command2" Command="{Binding TestCommand2}" CommandParameter="{Binding RelativeSource={x:Static RelativeSource.Self}}" >

<!-- 将父元素作为参数 -->
<Button Content="Test Command3" Command="{Binding TestCommand3}" CommandParameter="{Binding RelativeSource={x:Static RelativeSource.TemplatedParent}}" >

后台代码：

// code-behind构造函数中添加：

this.DataContext = new ViewModel();

ViewModel代码：

// ViewModel 构造函数
public ViewModel()
{    CallCOmmand1 = new DelegateCOmmmand(Call1);
    CallCOmmand2 = new DelegateCOmmmand<Object>(Call2);
    CallCOmmand3 = new DelegateCOmmmand<Object>(Call3);
}

// 命令声明
public DelegateCommand CallCommand { get; private set; }
public DelegateCommand<Object> CallCommand2 { get; private set; }
public DelegateCommand<Object> CallCommand3 { get; private set; }

// 命令实现
public void Call1()
{
}

public void Call2( Object obj )
{
    Button button = obj as Button;
}

public void Call3( Object obj )
{
    ParentType parent = obj as ParentType;
}