How to display the RadioButton properly in the grid cell in WinForms GridControl?
Display the radio button
When the RadioButton is assigned as a CellType in the grid cells without using other properties, the RadioButton is not displayed in those cells. As a result, an empty space is shown.

Solution:
To resolve this problem, use the ChoiceList property to set
the values to the RadioButton that is displayed. The number
of RadioButtons is displayed based on the number of values
given in the collection.
//Sets the column 1 celltype as RadioButton
this.gridGroupingControl1.TableDescriptor.Columns[1].Appearance.AnyRecordFieldCell.CellType = GridCellTypeName.RadioButton;
StringCollection collection = new StringCollection();
collection.AddRange(new string[] { "one", "two" });
//Sets the choice list to display the RadioButton
this.gridGroupingControl1.TableDescriptor.Columns[1].Appearance.AnyRecordFieldCell.ChoiceList = collection;'Sets the column 1 celltype as RadioButton
Me.gridGroupingControl1.TableDescriptor.Columns(1).Appearance.AnyRecordFieldCell.CellType = GridCellTypeName.RadioButton
Dim collection As New StringCollection()
collection.AddRange(New String() { "one", "two" })
'Sets the choice list to display the RadioButton
Me.gridGroupingControl1.TableDescriptor.Columns(1).Appearance.AnyRecordFieldCell.ChoiceList = collectionAfter applying the properties, the grid is shown as follows.

Note:
GridControl and GridDataBoundGrid have the same procedures to display the RadioButtons in the grid cells.
Samples:
C#: RadioButtonC#
VB: RadioButtonVB
Conclusion
I hope you enjoyed learning about how to display the RadioButton properly in the grid cell in WinForms GridControl.
You can refer to our WinForms GridControl feature tour page to know about its other groundbreaking feature representations and WinForms GridControl documentation, and how to quickly get started for configuration specifications.
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