您好Arjun，

我相信你需要创建一个可见性属性，并将其绑定到View中的ProgressBar的Visibility属性。你可以试试这个

命令绑定里面的DataTemplate 功能; 样本。

I believe you will need to create a Visibility property in the ViewModel and bind it to the ProgressBar's Visibility property in the View. You can try this through the Command binding inside DataTemplate   sample.

Sagar