How do I measure the size of a TextBlock in WPF before it is rendered?

wpf textblock measure
Scott Whitlock picture Scott Whitlock · Jun 7, 2010 · Viewed 12.2k times · Source

I have a WPF DataTemplate with two TextBlock controls (stacked) and then some other elements underneath. Due to some complicated layout code, I need to know the height of the two TextBlock elements so that I can draw some fancy connector lines, and line up other controls, etc.

If I know the text that's going into the TextBlocks, and I know the font, etc., is there some way I can compute or measure the height of these TextBlocks without actually rendering them?

Answer

gehho picture gehho · Jun 7, 2010

I think it should be sufficient to call the UIElement.Measure(Size) method and subsequently check the UIElement.DesiredSize property. For more information, check the provided MSDN links.

Related questions

Automatic vertical scroll bar in WPF TextBlock?

I have a TextBlock in WPF. I write many lines to it, far exceeding its vertical height. I expected a vertical scroll bar to appear automatically when that happens, but it didn't. I tried to look for a scroll bar …

Read More
Text vertical alignment in WPF TextBlock

How do I assign vertical center alignment to the text inside a TextBlock? I found TextAlignment property but it is for horizontal text alignment. How do I do it for vertical text alignment?

Read More
How to bind multiple values to a single WPF TextBlock?

I'm currently using the TextBlock below to bind the value of a property named Name: <TextBlock Text="{Binding Name}" /> Now, I want to bind another property named ID to the same TextBlock. Is it possible to bind two …

Read More