Hi Sanath,
Please refer to the attached sample that shows you how to add the radio button in a grid cell and let me know if you are looking something different.
GGCRadioButtonSample.zip///Sample Code here...
StringCollection sc = new StringCollection();
sc.AddRange(new String[]{"Open","Close"});
//Change the celltype to Radio button.
this.gridGroupingControl1.TableDescriptor.Columns[ "RadioButton" ].Appearance.AnyRecordFieldCell.CellType = "RadioButton";
//Display information for the Radio button.
this.gridGroupingControl1.TableDescriptor.Columns[ "RadioButton" ].Appearance.AnyRecordFieldCell.ChoiceList = sc;
Best Regards,
Haneef