ComboBox.SelectionStart Property

Gets or sets the starting index of text selected in the combo box.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in

public int SelectionStart { get; set; }
/** @property */
public int get_SelectionStart ()

/** @property */
public void set_SelectionStart (int value)

public function get SelectionStart () : int

public function set SelectionStart (value : int)

Property Value

The zero-based index of the first character in the string of the current text selection.

Exception typeCondition


The value is less than zero.

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 SelectionStart property is less than the value of the SelectionLength property, the value of the SelectionLength property is automatically decreased. The value of the SelectionStart property never causes an increase in the SelectionLength property.


SelectionStart returns the lower value of the current selection. For example, Select(10, -4) selects the text from character position 6 through character position 10. If you now get the SelectionStart value, it will be 6 rather than 10.

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0