How to add a filterbar to all the columns including child table in WinForms GridGroupingControl?

Column filter

The Filter bar can be enabled for all the columns of all the tables by setting the AllowFilter property of the GridColumnDescriptor for each and every table of the grid. In the following code example, the filter bar is added to all columns of the table.

this.gridGroupingControl1.TopLevelGroupOptions.ShowFilterBar = true;
this.gridGroupingControl1.ChildGroupOptions.ShowFilterBar = true;
this.gridGroupingControl1.NestedTableGroupOptions.ShowFilterBar = true;

//Add filter bar to all the parent columns.
foreach (GridColumnDescriptor parentColumn in this.gridGroupingControl1.TableDescriptor.Columns)
{
   parentColumn.AllowFilter = true;
}

//Add filter bar to all the child columns.
foreach (GridColumnDescriptor childcolumn in this.gridGroupingControl1.GetTableDescriptor("MyChildTable").Columns)
{
   childcolumn.AllowFilter = true;
}

//Add filter bar to all the grandchild columns.
foreach (GridColumnDescriptor grandChildColumn in this.gridGroupingControl1.GetTableDescriptor("MyGrandChildTable").Columns)
{
   grandChildColumn.AllowFilter = true;
}

Me.gridGroupingControl1.TopLevelGroupOptions.ShowFilterBar = True
Me.gridGroupingControl1.ChildGroupOptions.ShowFilterBar = True
Me.gridGroupingControl1.NestedTableGroupOptions.ShowFilterBar = True

'Add filter bar to all the parent columns.
For Each parentColumn As GridColumnDescriptor In Me.gridGroupingControl1.TableDescriptor.Columns
    parentColumn.AllowFilter = True
Next parentColumn

'Add filter bar to all the child columns.
For Each childcolumn As GridColumnDescriptor In Me.gridGroupingControl1.GetTableDescriptor("MyChildTable").Columns
    childcolumn.AllowFilter = True
Next childcolumn

'Add filter bar to all the grandchild columns.
For Each grandChildColumn As GridColumnDescriptor In Me.gridGroupingControl1.GetTableDescriptor("MyGrandChildTable").Columns
    grandChildColumn.AllowFilter = True
Next grandChildColumn