Divide by zero messagebox when double clicking combobox

[Administrator]

Hi,

I get messagebox stating "divide by zero error" whenever I doubleclick a combobox whose datasource has no items.

so for ex:
datasource = new SomeObject[]{} will show the error when doubleclicking.
datasource = new SomeObject[]{o1,o2,...}will not.

Is there a way to get rid of this message?

[Administrator]

Hi Palmer, When double clicked on a combobox cell, the OnEditPartMouseDown method of the combobox cell renderer is called that replaces it with the next item in the dropdown. To cancel it, for now you have to override the OnEditPartMouseDown deriving the cell renderer and cellmodel. Here is a sample that does it. Let me know if this helps. Thanks, Haneef

[Administrator]

Hi Palmer,

Later Essential Version 3.2.1.0, a new property has been added to the GridComboBoxCellModel for this. You can set this property using the following code.

//Access the cellModel
GridComboBoxCellModel cm = this.gridControl1.CellModels["ComboBox"] as GridComboBoxCellModel;

//Lets you enable or turn off selecting the next index when user double clicks inside cell.
cm.AllowDoubleClickChangeSelectedIndex = false;

Let me know if this helps.
Best regards,
Haneef