无法将单个参数传递给 MVVM Light Toolkit 的 RelayCommand 中的 lambda 函数
我不知道 Josh Smith 和 Laurent Bugnion 的 RelayCommand 实现之间是否存在差异，但在我看过的所有地方，听起来 RelayCommand 的执行部分可以采用 0 或 1 个参数。我只能让它与 0 一起工作。当我尝试类似以下操作时，
public class Test
{
public RelayCommand MyCommand { get; set; }
public Test()
{
MyCommand = new RelayCommand((param) => SomeFunc(param));
}
private void SomeFunc( object param)
{
}
}
我收到错误：Delegate 'System.Action' does not take '1' argument。为了确保我没有疯，我查看了 RelayCommand 的定义，以确保我的解决方案中的某个地方没有一些流氓实现，但可以肯定的是，这只是 Action，而不是 Action<>。
我到底错过了什么？
I don't know if there's a difference between Josh Smith's and Laurent Bugnion's implementations of RelayCommand or not, but everywhere I've looked, it sounds like the Execute portion of RelayCommand can take 0 or 1 parameters. I've only been able to get it to work with 0. When I try something like:
public class Test
{
public RelayCommand MyCommand { get; set; }
public Test()
{
MyCommand = new RelayCommand((param) => SomeFunc(param));
}
private void SomeFunc( object param)
{
}
}
I get the error: Delegate 'System.Action' does not take '1' arguments. Just to make sure I am not insane, I went to the definition of RelayCommand to make sure I didn't have some rogue implementation in my solution somewhere, but sure enough, it was just Action, and not Action<>.
What on earth am I missing here?
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RelayCommand的非通用实现（在 MVVM Light 中）不接受参数。请改用RelayCommandThe non-generic implementation of
RelayCommand(in MVVM Light) does not accept a parameter. UseRelayCommand<Object>instead, or (even better)RelayCommand<YourCustomType>so the parameter toSomeFuncis strongly typed.