[Solved] Unhandled Exception MeasureOverride

[Andrea Ferrari]

Hi,
I'm trying to use the RichTextBox editor, but when I add the followind code

<telerikEditor:RadRichTextBox Grid.Row="1" x:Name="editor" CurrentSpanStyleChanged="Editor_CurrentSpanStyleChanged" CurrentParagraphStyleChanged="Editor_CurrentParagraphPropertyChanged">

the Layout disappears with the following error:

 

MeasureOverride returned positive infinity: Telerik.Windows.Documents.Layout.ParagraphLayoutBox
   at Telerik.Windows.Documents.Layout.LayoutElement.Measure(SizeF availableSize) in c:\Users\TeamFoundationUser\AppData\Local\Temp\WPF_Scrum\Documents_SL_2010_Q1\Sources\Development\Documents\Layout\LayoutElement.cs:line 1735
   at Telerik.Windows.Documents.Layout.SectionLayoutBox.MeasureOverride(SizeF availableSize) in c:\Users\TeamFoundationUser\AppData\Local\Temp\WPF_Scrum\Documents_SL_2010_Q1\Sources\Development\Documents\Layout\SectionLayoutBox.cs:line 113
   at Telerik.Windows.Documents.Layout.LayoutElement.MeasureCore(SizeF availableSize) in c:\Users\TeamFoundationUser\AppData\Local\Temp\WPF_Scrum\Documents_SL_2010_Q1\Sources\Development\Documents\Layout\LayoutElement.cs:line 1812
   at Telerik.Windows.Documents.Layout.LayoutElement.Measure(SizeF availableSize) in c:\Users\TeamFoundationUser\AppData\Local\Temp\WPF_Scrum\Documents_SL_2010_Q1\Sources\Development\Documents\Layout\LayoutElement.cs:line 1724
   at Telerik.Windows.Documents.Layout.DocumentLayoutBox.MeasureOverride(SizeF availableSize) in c:\Users\TeamFoundationUser\AppData\Local\Temp\WPF_Scrum\Documents_SL_2010_Q1\Sources\Development\Documents\Layout\DocumentLayoutBox.cs:line 205
   at Telerik.Windows.Documents.Layout.LayoutElement.MeasureCore(SizeF availableSize) in c:\Users\TeamFoundationUser\AppData\Local\Temp\WPF_Scrum\Documents_SL_2010_Q1\Sources\Development\Documents\Layout\LayoutElement.cs:line 1812
   at Telerik.Windows.Documents.Layout.LayoutElement.Measure(SizeF availableSize) in c:\Users\TeamFoundationUser\AppData\Local\Temp\WPF_Scrum\Documents_SL_2010_Q1\Sources\Development\Documents\Layout\LayoutElement.cs:line 1724
   at Telerik.Windows.Documents.UI.EditorContentPresenter.MeasureOverride(Size availableSize) in c:\Users\TeamFoundationUser\AppData\Local\Temp\WPF_Scrum\Documents_SL_2010_Q1\Sources\Development\Documents\UI\EditorContentPresenter.cs:line 962
   at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Single inWidth, Single inHeight, Single& outWidth, Single& outHeight)

What I've to do?

Thanks and regards.
Andrea Ferrari

[Mike]

Hi Andrea Ferrari,

Thank you for reporting this issue.
In the CTP version RadRichTextBox can not be added to Horizontal/Vertical stack panel or in Grid cell that has Auto size, which is most probably the problem in your case. In the next version we will make sure this is not an issue. However, you should be careful when using this kind of panel with RadRichTextBox, since this way you will loose the UI visualization support, which may lead to poor performance and large memory footprint of your application when editing larger documents.

We suggest you use the grid panel and specify exact, *, or maximum size of the cells to avoid such problems.
Let us know if we can help any further with this issue.

Greetings,
Mike
the Telerik team

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[Bob]

Is this still an issue? I'm getting this kind of error in Blend now in the design view with our control that has a RadRichTextBox in it.

An Exception was thrown
InvalidOperationException: MeasureOverride returned NzN: Telerik.Windows.Documents.Layout.ParagraphLayoutBox

And ours is in a Grid Row with a height of star.

Right now the only way to work in Blends design view is to set the Visibility of the RadRichTextBox to Collapsed.

[Boby]

Hi Bob,
We cannot reproduce the exception in Blend. Could you please open a support ticket and send us attached a sample project that reproduces the issue?

Regards,
Boby
the Telerik team

[Bob]

Don't think I can do a sample due to time constraints. Is there a better way to get more info out of the Blend error message you think, if it's getting this NaN measuring issue?

[Boby]

Hi Bob,
We still cannot reproduce the exception. If you manage to find more info about it, or find a stable procedure for reproducing it, please get back to us again.

All the best,
Boby
the Telerik team