Hide all the controls except one

Question

Suppose that I have this XAML code :

<StackPanel>
    <s:SurfaceTextBox Name="A" />
    <s:SurfaceTextBox Name="B" />
</StackPanel>

<s:ScatterView>
    <s:SurfaceTextBox Name="C" />
    <s:SurfaceTextBox Name="D" />
</s:ScatterView>

How can I hide all those TextBoxes in the code behind, exept the one nammed A.

I'm not asking for this response :

B.Visibility = Visibility.Hidden;
C.Visibility = Visibility.Hidden;
D.Visibility = Visibility.Hidden;

I want something generic which can do it for all, without knowing their names ?

Answer 1

You could probably do something like this:

public void SetVisibility(UIElement parent)
{
    var childNumber = VisualTreeHelper.GetChildrenCount(parent);

    for (var i = 0; i <= childNumber - 1; i++)
    {
        var uiElement = VisualTreeHelper.GetChild(parent, i) as UIElement;
        var surfaceTextBox = uiElement as SurfaceTextBox;

        // Set your criteria here
        if (surfaceTextBox != null && surfaceTextBox.Name != "A")
        {
            uiElement.Visibility = Visibility.Collapsed;
        }

        if (uiElement != null && VisualTreeHelper.GetChildrenCount(uiElement) > 0)
        {
            SetVisibility(uiElement);
        }
    }
}

Give your root element a name:

<Grid x:Name="Root">
    <StackPanel>
        <s:SurfaceTextBox Name="A" />
        <s:SurfaceTextBox Name="B" />
    </StackPanel>

    <s:ScatterView>
        <s:SurfaceTextBox Name="C" />
        <s:SurfaceTextBox Name="D" />
    </s:ScatterView>
</Grid>

and then call it like this:

SetVisibility(Root);