设置 window 大小以适应内容，但阻止 window 宽度超出屏幕宽度

Question

I want to create a sort of a popup window like the Overloads window in Visual Studio. And just like the Overloads window, it can pop up pretty much anywhere on the screen.

I have a Window that has a child TextBlock control. The Window changes its size according to the TextBlock size by setting its SizeToContent property to WidthAndHeight . If the TextBlock Text is too long, the Window resizes its width beyond the screen's width resulting in a partially visible Window . I would like the Text to wrap when it reaches the end of the screen, so to say.

I tried setting the TextBlock TextWrapping property to Wrap to hopefully stop this behavior, but it doesn't help because of the SizeToContent property being set. Any suggestions/workarounds?

Thanks for your help!

Answer 1

You could set the MaxWidth property of the window to the width of the screen, eg:

TextBlock text = new TextBlock()
{
    Text = "some very long string...",
    TextWrapping = TextWrapping.Wrap
};
Window window = new Window()
{
    SizeToContent = SizeToContent.WidthAndHeight,
    Content = text,
    MaxWidth = System.Windows.SystemParameters.PrimaryScreenWidth
};
window.Show();

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