When you set the cell type of the column header as Checkbox, the header style changes.
The GetGridstyleInfo() method has to be used to keep the same background color of the header cell while changing the header cell type. The required customization is done in this GetGridStylenfo() method. You have to use the QuerycellstyleInfo event to get the style and then pass this style to the GetGridstyleInfo() method.
Note: To learn how to use the checkbox and other functions, refer to the following link:
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