Returns the height of an item in the ComboBox.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
The index is less than zero.
The index is greater than count of items in the list.
If DrawMode is not set to OwnerDrawVariable, the value of the index parameter is ignored because all items in a standard ComboBox are the same size. You can use this property when you are using an owner-drawn ComboBox to determine the size of any item within the ComboBox.
For more information about specifying the height for items in an owner-drawn list, see MeasureItem event.