I have a GridGroupingControl and one of the column in the grid is a checkbox. How do i get three states in the check box(checked, unchecked, indeterminate). I tried to set the indetermvalue = 2 in the querystyleinfo and that didn''t work. My syncfusion version 22.214.171.124
You should try setting the style.TriState property for that column.
GridStyleInfo style = this.gridGroupingControl1.TableDescriptor.Columns["boolCol"].Appearance.AnyRecordFieldCell;
style.TriState = true;
style.CellType = "CheckBox";