In your case, you can subscribe to the ViewCellFormatting of the RadGridView. Inside the vent handler, you can check the e.CellElement property for GridRowHeaderCellElement. Then you could customize the cell per your requirement. Here you could also set the Text property of the row header cell.
privatevoidRadGridView1_ViewCellFormatting1(object sender, CellFormattingEventArgs e)
if (e.CellElement is GridRowHeaderCellElement )
e.CellElement.Text = "C1";
e.CellElement.ForeColor = Color.Blue;
As for getting the text of a specific row header cell, you can use the following code.
var cellContent = this.radGridView1.TableElement.VisualRows.VisualCells.Text;
I hope that you find this information helpful.
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