Gets or sets the starting index of text selected in the ToolStripComboBox.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
If no text is selected in the control, this property indicates the insertion point for new text. If you set this property to a location beyond the length of the text in the control, the selection start position is placed after the last character. When text is selected in the text box control, changing this property can release the value of the SelectionLength property. If the remaining text in the control after the position indicated by the property is less than the value of the SelectionLength property, the value of the SelectionLength property is automatically decreased. The value of the property never causes an increase in the SelectionLength property.