Hi Simon ,
Thanks for the interest in Syncfusion products.
If your intention is to set the Column Header of the GridControl editable, then you will need to change the CellType from "Static" to "TextBox". Please refer the code snippet below that shows how you can set the celltype of Textbox.
GridStyleInfo style = this.gridControl1[0, 2];
style.CellType = "TextBox";
style.CellAppearance = GridCellAppearance.Raised;
this.gridControl1.AllowSelection &= ~GridSelectionFlags.Column;
Please refer the sample in the below link that illustrates the above.
http://websamples.syncfusion.com/samples/Grid.Windows/F72544/main.htm Please let me know if you have any questions.
Regards,
Asem.