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Request a Feature Report a Bug
Declined
Last Updated: 16 May 2019 08:17 by ADMIN
Christian
Created on: 11 Apr 2019 06:56
Category: UI for WinForms
Type: Bug Report
1
RadGridView: epxanding the second level is slow
Use attached to reproduce.
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1 comment
ADMIN
Dimitar
Posted on: 16 May 2019 08:17
Hello,

The issue is inside the measure and arrange logic of the child templates. When setup in hierarchy the grid will create all of its child rows when a particular hierarchy template gets expanded. With thousands of child records this will impact the performance. The recommended solution for this scenario is to use the scrollbars inside the child templates:  Copy Code
this.radGridView1.UseScrollbarsInHierarchy = true;

Setting the property to true will force the detail row to use fixed height when measuring and this way not all of the rows will be created.

Note that issue is duplicate of https://feedback.telerik.com/winforms/1369801-fix-radgridview-performance-issue-in-object-relational-hierarchy-mode
 
Regards,
Dimitar
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