在Windows Phone c＃应用程序中按名称搜索控件

Question

Is it possible to search controls by name in Windows Phone application? I know it's possible in normal desktop application written in c#:

string s = "label2";
            Control[] controls = this.Controls.Find(s, false);
            if (controls.Length > 0)
            {
                Label found = controls[0] as Label;
                if (found != null) found.Text = "new label2 text";
            }

In Windows Phone application 'this.Controls' is unrecognized...

Answer 1

Use FindName :

var control = this.FindName(s);

if (control != null)
{
    // Whatever
}

Answer 2

Yes, it is possible - but with Windows Phone your controls are located within a tree-like structure called the visual tree. In order to find a control, you have to navigate this tree. I wrote a utility class a while bcd called Linq-to-VisualTree that simplifies this process.