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Control.ControlCollection.GetChildIndex Method (Control)

Retrieves the index of the specified child control within the control collection.

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

public int GetChildIndex(
	Control child


Type: System.Windows.Forms.Control
The Control to search for in the control collection.

Return Value

Type: System.Int32
A zero-based index value that represents the location of the specified child control within the control collection.


The child Control is not in the Control.ControlCollection.

The control with an index value of zero is at the top of the z-order, and higher numbers are closer to the bottom.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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