Allow user to drag column from GridGroupingControl to remove from table

[Jeff King]

Hi,

I'm having trouble figuring out how to allow the user to drag a column from a GridGroupingControl off the control in order to remove it.

I want it to work the same as in Outlook when you drag a column header off the grid.

I saw the post here:
http://www.syncfusion.com/support/forums/grid-windows/53250/How-to-Remove-a-Column-from-Visible-Columns-Collection-by-Dragging-its-Column-Header-from-GridGroupingControl

however the link with the sample app is broken?

Thanks

[Christopher Issac Sunder K]

Hi Jeff,

Thank you for your interest in Syncfusion products.

Your mentioned requirement can be achieved by handling the Tablecontrol_mouseUp and TableControl_MouseDown events in GridGroupingControl. The TableControl_MouseDown is used to catch the HeaderColumn and that retrieved column is removed by calling the Tablecontrol_mouseUp whether the mouse pointer is not in the column header.

        GridColumnDescriptor col = new GridColumnDescriptor();
        void TableControl_MouseDown(object sender, MouseEventArgs e)
        {
            GridTableControl tableControl = sender as GridTableControl;
            GridTableCellStyleInfo style = (GridTableCellStyleInfo)tableControl.PointToTableCellStyle(new Point(e.X, e.Y));
            Point pt = tableControl.PointToClient(Control.MousePosition);

            if (style.TableCellIdentity.DisplayElement.Kind == DisplayElementKind.ColumnHeader)
            {
                col = style.TableCellIdentity.Column;
            }
        }

        void TableControl_MouseUp(object sender, MouseEventArgs e)
        {
            GridTableControl tableControl = sender as GridTableControl;
            GridTableCellStyleInfo style = (GridTableCellStyleInfo)tableControl.PointToTableCellStyle(new Point(e.X, e.Y));
            Point pt = tableControl.PointToClient(Control.MousePosition);

            if (style.TableCellIdentity.DisplayElement.Kind != DisplayElementKind.ColumnHeader && col!=null)
            {
                this.gridGroupingControl1.TableDescriptor.VisibleColumns.Remove(col.ToString());
            }
            col = null;
        }

Please refer the sample link which allows user to drag column from GridGroupingControl to remove from table.

http://help.syncfusion.com/support/samples/Grid.Windows/8.2.0.18/F94064.zip

Please let me know if you have any further concerns

Regards,
Christopher K.