How to combine some cells in a DataGrid as one cell?

[Sun Zhenzuo]

Hello all:
I want to combine the following cells as one cell:(1,1),(1,2),(2,1),(2,);I had tried many methods, but no one could work. Will you please help me? Thanks.

[Administrator]

You can use CoveredRanges for this.

grid.Model.CoveredRanges.Add(GridRangeInfo.Cells(1,1,2,2));