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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: 4.6, 4.5, 4, 3.5, 3.0, 2.0
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