c# - MVVM命令错误

Question

我对 WPF MVVM 模式非常陌生，尤其是命令

ViewModel 包含 Command

public ICommand MyButtonClickCommand
{
    get { return new RelayCommand(FuncToCall); }
}

private object FuncToCall(object context)
{
    MessageBox.Show("The button was Clicked", "");
    return null;
}

和RelayCommandClass.cs

private Action<object> _action;

public RelayCommand(Action<object> action)
{
    _action = action;
}

编译时我得到FuncToCall(object)'有错误的返回类型

谢谢大家

Answer 1

当您编写方法名称并单击其建议为您创建方法时，Visual Studio 添加了错误的方法签名。将签名更改为这样，一切都会好起来:

private void FuncToCall(object context)
{
    MessageBox.Show("The button was Clicked", "");
}