ToolStripComboBox.Select Method (Int32, Int32)
Selects a range of text in the editable portion of the ToolStripComboBox.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
The start is less than zero.
start minus length is less than zero.
If you want to set the start position to the first character in the control's text, set the start parameter to zero. You can use this method to select a substring of text, such as when searching through the text of the control and replacing information.
Available since 2.0