Question

I found a nice Find Name code snippet that I m using in a WPF solution:

public static T FindVisualChildByName<T>(DependencyObject parent, string name) where T : DependencyObject
    {
        for (int i = 0; i < VisualTreeHelper.GetChildrenCount(parent); i++)
        {
            var child = VisualTreeHelper.GetChild(parent, i);
            string controlName = child.GetValue(Control.NameProperty) as string;
            if (controlName == name)
            {
                return child as T;
            }
            else
            {
                T result = FindVisualChildByName<T>(child, name);
                if (result != null)
                    return result;
            }
        }
        return null;
    }

But this only works if I am on the UI thread.

I have another thread that is playing an audio file with an end sync. I want to use the code above to set a dep property on the ui thread, but I keep getting a cross-thread error.

甚至试图简单:

SoundFXPad selectedSoundFXPad = (SoundFXPad)m_parent.FindName("panelC" + numbervar);

我也想到同样的错误。

我所看到的所有其他友好型无线世界森林分遣队-Invoke编码已经知道控制的名称。是否有办法用 above手法使用上述两种法典,来影响从另一个表面上看需要“发现”的“统一管理”。

感谢你们!

Answer 1

一般来说,每个应用都有一个统一标准(一般说来,你可以制造多种,但并不常见)。因此,你不需要控制名称来寻找派遣者——试图这样做:

Application.Current.Dispatcher.Invoke(new Action(
    delegate {
         // Put code that needs to run on the UI thread here
    }));

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