MaterialDesignInXAML / MaterialDesignInXAML/MaterialDesignInXamlToolkit
The DialogHost. Show() method affects the rendering speed of the UI when multiple rows are selected in the DataGrid
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- C#
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Description
### Bug explanation
After using the DialogHost. Show() method, if multiple rows (over 10000 rows) are selected in the DataGrid, it will seriously affect the rendering speed of the UI. At present, I have found this issue on many computers. If the DataGrid data exceeds tens of thousands of rows, when performing a select all operation, the UI may even lag for more than ten seconds. The same amount of data results in a fast rendering speed before using the DialogHost. Show() method. Visual Studio performance probe analysis was used and it was found that the stuck time was used for GC.
### Version
4.9.0
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Research direction
Reproduce the slowdown with DialogHost.Show() and a WPF DataGrid containing more than 10,000 rows, comparing select-all behavior before and after showing the dialog. Use the Visual Studio performance profiler to confirm the GC-related rendering delay. Done means the large-selection operation no longer incurs the reported multi-second UI lag.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- csharp
- Domain
- desktop, performance
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100