How to set drop-down list height

[Lan Mo]

Hello,
In GGC,I used following code to set a combobox pickup list. I want to set the drop-down list to 20 rows. which property to use?

this.gdBase.TableDescriptor.Columns[ColumnName].Appearance.AnyRecordFieldCell.CellType ="ComboBox";
this.gdBase.TableDescriptor.Columns[ColumnName].Appearance.AnyRecordFieldCell.DataSource=dvLookUp;//tbLookup;
this.gdBase.TableDescriptor.Columns[ColumnName].Appearance.AnyRecordFieldCell.DisplayMember=lookup_field_val;
this.gdBase.TableDescriptor.Columns[ColumnName].Appearance.AnyRecordFieldCell.ValueMember=lookup_field_code;
this.gdBase.TableDescriptor.Columns[ColumnName].Appearance.AnyRecordFieldCell.ShowButtons=GridShowButtons.ShowCurrentCell;

[Administrator]

You can handle the TableControlCurrentCellShowingDropDown event.
In your handler, try code like this.

GridControlBase grid = e.TableControl as GridControlBase;
if(grid != null)
{
	GridCurrentCell cc = grid.CurrentCell;
	GridComboBoxCellRenderer cr = cc.Renderer as GridComboBoxCellRenderer;
	if(cc != null)
	{
		GridComboBoxListBoxPart listBoxPart = (GridComboBoxListBoxPart)cr.ListBoxPart;
		listBoxPart.DropDownRows = yourMaxItemCount;
	}
}

[Lan Mo]

Thanks, it works.

>You can handle the TableControlCurrentCellShowingDropDown event.
>In your handler, try code like this.
>

>GridControlBase grid = e.TableControl as GridControlBase;
>if(grid != null)
>{
>	GridCurrentCell cc = grid.CurrentCell;
>	GridComboBoxCellRenderer cr = cc.Renderer as GridComboBoxCellRenderer;
>	if(cc != null)
>	{
>		GridComboBoxListBoxPart listBoxPart = (GridComboBoxListBoxPart)cr.ListBoxPart;
>		listBoxPart.DropDownRows = yourMaxItemCount;
>	}
>}
>