使用参数的棱镜命令绑定？

Question

我有一个有效的超链接如下：

XAML:

 <TextBlock >
    <Hyperlink Command="{Binding NavHomeViewCommand}" >
       <Run Text="{Binding PersonSelected.PersonKnownName}" />
    </Hyperlink>
</TextBlock>

构造函数：

 navHomeViewCommand = new DelegateCommand(NavHomeView);

命令：

     private readonly ICommand navHomeViewCommand;
    public ICommand NavHomeViewCommand
    {
        get
        { return navHomeViewCommand; }
    }
    private void NavHomeView()
    {
        int val;
        val = PersonSelected.PersonKnownID);
        var parameters = new NavigationParameters();
        parameters.Add("To", val);
        _regionManager.RequestNavigate("MainRegion", new Uri("HomeView", UriKind.Relative), parameters);
    }

如果我想要多个超链接，例如...

     <Hyperlink Command="{Binding NavHomeViewCommand}" >
       <Run Text="{Binding PersonSelected.PersonKnownName}" />
    </Hyperlink>
    <Hyperlink Command="{Binding NavHomeViewCommand}" >
       <Run Text="{Binding PersonSelected.PersonKnownName2}" />
    </Hyperlink>
    <Hyperlink Command="{Binding NavHomeViewCommand}" >
       <Run Text="{Binding PersonSelected.PersonKnownName3}" />
    </Hyperlink>

我是否必须为每个命令创建一个新命令，或者是否有办法将每个超链接的不同参数 (int) 传递到现有 NavHomeView 命令，以便我可以重复使用此命令？

Answer 1

您可以使用 'CommandParameter' 属性的超链接。

 <Hyperlink Command="{Binding NavHomeViewCommand}" CommandParameter="1" >
       <Run Text="{Binding PersonSelected.PersonKnownName}" />
 </Hyperlink>

Answer 2

这是对我有用的完整解决方案：

使用 CommandParameter（根据 Dmitry - Spasiba！）

<TextBlock>
    <Hyperlink CommandParameter="{Binding PersonSelected.PersonKnown2ID}"
               Command="{Binding NavHomeViewCommand}" >
        <Run Text="{Binding PersonSelected.PersonKnownName2}" />
    </Hyperlink>
</TextBlock>

更改 DelegateCommand 以使用对象参数

navHomeViewCommand = new DelegateCommand<object>(NavHomeView);

命令属性保持不变，但方法更改为使用参数：

private readonly ICommand navHomeViewCommand;
public ICommand NavHomeViewCommand
{
    get { return navHomeViewCommand; }
}

private void NavHomeView(object ID)
{
    int val = Convert.ToInt32(ID);
    var parameters = new NavigationParameters();
    parameters.Add("To", val);
   _regionManager.RequestNavigate("MainRegion", new Uri("HomeView", UriKind.Relative), parameters);
}

使用参数的棱镜命令绑定？

Prism Command Binding using Parameter?

c#

wpf

command

prism

parameter-passing