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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: 4.6, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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