WPF委托命令DelegateCommand的傳參方式

首先引用  Microsoft.Practices.Prism

MVVM模式代碼如下：

XAML代碼：

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

<!-- 將自己作為參數 -->
<Button Content="Test Command2" Command="{Binding TestCommand2}" CommandParameter="{Binding RelativeSource={x:Static RelativeSource.Self}}" >

<!-- 將父元素作為參數 -->
<Button Content="Test Command3" Command="{Binding TestCommand3}" CommandParameter="{Binding RelativeSource={x:Static RelativeSource.TemplatedParent}}" >

后台代碼：

// code-behind構造函數中添加：

this.DataContext = new ViewModel();

ViewModel代碼：

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

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

// 命令實現
public void Call1()
{
}

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

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