Hi Iain,
This can be done by setting the MergeCellsMode option in the Grid Model and set that column''s style to allow it. For example, the following code would enable merging for Column 2.
this.gridControl1.Model.Options.MergeCellsMode = GridMergeCellsMode.BeforeDisplayCalculation|GridMergeCellsMode.MergeRowsInColumn;
this.gridControl1.ColStyles[2].MergeCell = GridMergeCellDirection.RowsInColumn;
I''ve also attached a sample that demonstrates this:
MergeCells_6593.zip
If you have any questions about this, please let us know.
Regards,
Gregory Austin
Syncfusion Inc.