Hi,
If you are talking about the WinComboBox that is used in the sample applications and not a listbox, I will show how to manipulate it. In order to change the width of the WinComboBox, you must set the DropDownSize property. You can refer to the following documentation in order to do this by clicking here. Here is an example of changing the size of the dropdown WinComboBox:
C#
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((WinComboBox)m_filterRow.Cells[“EmployeeID”].CellEditorManager.TemplateControl).DropDownSize = new Size(1000, 1000);
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Imported from legacy forums. Posted by Marc [Xceed] (had 1273 views)