我仍在学习 WPF 绑定并且已经为此苦苦挣扎了一段时间。我在 ViewModel 中有一个枚举存储,如下所示:
namespace theNamespace
{
public class frmSetupViewModel
{
public enum LocationLabelType {Location, Sample}
...
}
}
我想让一个按钮通过 CommandParameter 传递其中一个值,但无法弄清楚如何让它工作。到目前为止,这些是我尝试过的组合:
//When value is inside the frmSetupViewModel, these do not work
CommandParameter="{x:Static local:LocationLabelType.Location}" //'Type was not found.'
CommandParameter="{x:Static local:frmSetupViewModel+LocationLabelType.Location}" //'Type was not found.'
CommandParameter="{x:Static local:frmSetupViewModel.LocationLabelType.Location}" //'Type was not found.'
CommandParameter="{Binding {x:Static local:LocationLabelType.Location}}" //'Value cannot be null'
CommandParameter="{Binding {x:Static local:frmSetupViewModel+LocationLabelType.Location}}" //'Value cannot be null'
CommandParameter="{Binding {x:Static local:frmSetupViewModel.LocationLabelType.Location}}" //'Value cannot be null'
但是,如果我将枚举移到 VM 外部并进入名称空间,如下所示:
namespace theNamespace
{
public enum LocationLabelType {Location, Sample}
public class frmSetupViewModel
{
...
}
}
这很好用:
//Works when enum is moved to Namespace
CommandParameter="{x:Static local:LocationLabelType.Location}"
我假设我的 CommandParameter 缺少一些东西?
VM 通过 DataContext 加载:
<Window.DataContext>
<local:frmSetupViewModel />
</Window.DataContext>
谢谢。