c# - change with of dropdown window in a telerik RadGridView comboboxcolumn -

i'm trying set width of dropdown window in telerik radgridview gridviewcomboboxcolumn using c# , winforms. found ways set width of whole column:

foreach (gridviewcolumn col in radgridview1.columns) {     gridviewcomboboxcolumn cbcol = col gridviewcomboboxcolumn;     cbcol.width = 200; } 

but not want. want dropdown window wider column itself. found dropdownstyle property:

cbcol.dropdownstyle = telerik.wincontrols.raddropdownstyle.dropdown; // or cbcol.dropdownstyle = telerik.wincontrols.raddropdownstyle.dropdownlist; 

but doesn't make difference (at least not visually me) , couldn't find property dropdownwidth or similar.

here are:

    protected override void onload(eventargs e)     {         base.onload(e);          radgridview1.celleditorinitialized += radgridview1_celleditorinitialized;     }      private void radgridview1_celleditorinitialized(object sender, gridviewcelleventargs e)     {         raddropdownlisteditor editor = e.activeeditor raddropdownlisteditor;         if (editor != null)         {             raddropdownlisteditorelement ddlelement =(raddropdownlisteditorelement ) editor.editorelement;             ddlelement.dropdownminsize = new size(200, 300);         }     }