You can change the column orders of a GridListControl by overriding the CreateGridColumn method in GridListControl class. By using this method, you can change the order of the columns as per your requirement. In the following sample, the columns are reordered from ParentID|Integer to Interger|ParentID.
The following screenshot displays the changed column order in the GridListControl.
Figure 1: Changed Column order in the GridListControl
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