c# - 如何得到 x :name of element in code behind/XAML

Question

我在 .xaml 中有一些图像，如下所示:

<Image x:Name="image1" Source="image1.png">
<Image.GestureRecognizers>
<TapGestureRecognizer Tapped="OnTapGestureTap" NumberOfTapsRequired="1" />
</Image.GestureRecognizers>
</Image>

<Image x:Name="image2" Source="image2.png">
<Image.GestureRecognizers>
<TapGestureRecognizer Tapped="OnTapGestureTap" NumberOfTapsRequired="1" />
</Image.GestureRecognizers>
</Image>

单击时，图像会调用一些操作。现在在 xaml.cs 文件中，我需要获取单击哪个图像以在 switch 中使用:

    async void OnTapGestureTap(object sender, EventArgs args)
    {
        switch () //--HOW VERIFY IN SWiTCH WHICH IMAGE WAS CLICKED???
        {
            case image1:
                await Navigation.PushAsync(new Image1Page());
                break;
            case image2:
                await Navigation.PushAsync(new Image2Page());
                break;
        }
    }

Answer 1

您可以检索原始图像名称并打开该字符串:

if (sender is Image image)
{
    switch (image.Source as FileImageSource).File) 
    {
        case "image1.png":
            Console.WriteLine("image1.png");
            break;
        case "image2.png":
            Console.WriteLine("image2.png");
            break;
    }
}