Silverlight 4.0 如何执行Silverlight ICommand?
这是一个如此基本的问题,但我不得不问 在SL中,我有以下XAML:Silverlight 4.0 如何执行Silverlight ICommand?,silverlight-4.0,silverlight-3.0,command,routed-commands,icommand,Silverlight 4.0,Silverlight 3.0,Command,Routed Commands,Icommand,这是一个如此基本的问题,但我不得不问 在SL中,我有以下XAML: <UserControl.Resources> <local:Commands x:Key="MyCommands" /> </UserControl.Resources> <Button Content="Click Me" Command="{Binding Path=Click, Source={StaticResource MyCommands}}"
<UserControl.Resources>
<local:Commands x:Key="MyCommands" />
</UserControl.Resources>
<Button Content="Click Me"
Command="{Binding Path=Click, Source={StaticResource MyCommands}}"
CommandParameter="Hello World" />
但是当我单击按钮时,命令的Execute()永远不会被触发
有什么诀窍吗?没有诀窍,问题在于XAML和C#类之间的绑定。不能仅将字段绑定到属性
public class Commands
{
public ClickCommand Click { get; set; }
public Commands()
{
Click = new ClickCommand();
}
public sealed class ClickCommand : ICommand
{
public event EventHandler CanExecuteChanged;
public bool CanExecute(object parameter)
{
return true;
}
public void Execute(object parameter)
{
MessageBox.Show(parameter.ToString());
}
}
}
public class Commands
{
public ClickCommand Click { get; set; }
public Commands()
{
Click = new ClickCommand();
}
public sealed class ClickCommand : ICommand
{
public event EventHandler CanExecuteChanged;
public bool CanExecute(object parameter)
{
return true;
}
public void Execute(object parameter)
{
MessageBox.Show(parameter.ToString());
}
}
}