public class btnCommand:ICommand
    {
private bool canExe;
/// <summary>
/// 构造函数设置是否执行操作
/// </summary>
/// <param name="canexe"></param>
        public btnCommand(bool canexe)
        {
this.canExe = canexe;
        }

/// <summary>
/// 判断是否执行操作
/// </summary>
/// <param name="parameter"></param>
/// <returns></returns>
        public bool CanExecute(object parameter)
        {
if (canExe)
            {
return true;
            }
return false;
        }

/// <summary>
/// 是否执行操作的变更发生时
/// </summary>
        public event EventHandler CanExecuteChanged;

/// <summary>
/// 执行操作的内容，可以变为Action行为
/// </summary>
/// <param name="parameter"></param>
        public void Execute(object parameter)
        {
if (parameter != null)
            { MessageBox.Show(parameter.ToString()); }
else
            {
                MessageBox.Show("未设置CommandParameter");
            }
        }
    }

    public class BtnViewModel
    {
// 设置两个命令
        public ICommand BtnCommand { get; set; }
public ICommand BtnCommandTrue { get; set; }
public BtnViewModel()
        {
//初始化两个命令值
            BtnCommand = new btnCommand(false);
            BtnCommandTrue = new btnCommand(true);
        }
    }

    <UserControl.DataContext>
        <local:BtnViewModel />
    </UserControl.DataContext>

    <Grid x:Name="LayoutRoot" Background="White">
        <Button Content="第一个" Height="23" HorizontalAlignment="Left"
                Command="{Binding BtnCommand}" CommandParameter="第一个Command"
                Margin="94,80,0,0" Name="button1" VerticalAlignment="Top" Width="75" />
        <Button Command="{Binding BtnCommandTrue}" CommandParameter="第二个Command"
                Content="第二个" Height="23" HorizontalAlignment="Left" Margin="94,140,0,0"
                Name="button2" VerticalAlignment="Top" Width="75" />
    </Grid>