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WebFormsRootDesigner.AddControlToDocument Method

When overridden in a derived class, adds a Web server control to the Web Forms page.

Namespace:  System.Web.UI.Design
Assembly:  System.Design (in System.Design.dll)

public abstract string AddControlToDocument(
	Control newControl,
	Control referenceControl,
	ControlLocation location


Type: System.Web.UI.Control

The control to add to the Web Forms page.

Type: System.Web.UI.Control

The control relative to which newControl is added.

Type: System.Web.UI.Design.ControlLocation

A ControlLocation value that indicates the location for newControl relative to referenceControl.

Return Value

Type: System.String
The ID of the control that was added.

Although a control might already have an ID assigned to it, if there is already a control in the Web Forms page with the same ID, a new ID is assigned.

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0

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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