Drag and Drop Multiple Columns in GGC

[Administrator]

Can someone please tell me know to drag and drop multiple columns in GGC?

I wrote some custom code in TableControl_MouseDown to do column selection. Now I have multiple columns selected. How can I drag and drop these columns to a different location?

Thanks,

Frankie

[Administrator]

Hi Frankie,

You can handle the TableControl.QueryAllowDragColumn todrag and drop multiple columns in Grid. Please refer to the attached sample for more details.

private void TableControl_QueryAllowDragColumn(object sender, GridQueryAllowDragColumnEventArgs e)
{
if(e.Reason == GridQueryAllowDragColumnReason.MouseUp)
{
e.AllowDrag = false;

ArrayList SelectedColumnNames = new ArrayList();
int insertBeforeIndex = e.TableControl.TableDescriptor.VisibleColumns.IndexOf(e.InsertBeforeColumn);

if( insertBeforeIndex != -1)
{
foreach(GridRangeInfo columnRange in e.TableControl.Model.SelectedRanges )
{
for(int i = columnRange.Left;i<= columnRange.Right ;i++)
{
int fieldIndex = e.TableControl.TableDescriptor.ColIndexToField(i);
SelectedColumnNames.Add( e.TableControl.TableDescriptor.VisibleColumns[fieldIndex].Name);
}
}
for(int i = 0;i< SelectedColumnNames.Count;i++)
{
int sourceIndex = e.TableControl.TableDescriptor.VisibleColumns.IndexOf(SelectedColumnNames[i].ToString() );
if( sourceIndex != -1)
{
e.TableControl.TableDescriptor.VisibleColumns.Move(sourceIndex,insertBeforeIndex - i);
}
}
}
}
}

Here is a sample.
http://www.syncfusion.com/Support/user/uploads/MultipleDragColumns_b31f4e3c.zip

If this did not help you to solve the problem, please modify the sample to show the problem.

Best Regards,
Haneef