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ControlCollection.AddAt Method

Adds the specified Control object to the collection at the specified index location.

Namespace: System.Web.UI
Assembly: System.Web (in system.web.dll)

public virtual void AddAt (
	int index,
	Control child
)
public void AddAt (
	int index, 
	Control child
)
public function AddAt (
	index : int, 
	child : Control
)
Not applicable.

Parameters

index

The location in the array at which to add the child control.

child

The Control to add to the collection.

Exception typeCondition

ArgumentNullException

The child parameter does not specify a control.

ArgumentOutOfRangeException

The index parameter is less than zero or greater than the ControlCollection.Count property.

HttpException

The ControlCollection is read-only.

The added control can be an instance of any ASP.NET server control, a custom server control you create, or a literal control.

The following code example uses the AddAt method to create a new LiteralControl named ChildControl2 and add it to the myButton control's ControlCollection collection at the index location of 1.

// Create a LiteralControl and use the Add method to add it
// to a button's ControlCollection, then use the AddAt method
// to add another LiteralControl to the collection at the
// index location of 1.
LiteralControl myLiteralControl = new LiteralControl("ChildControl1");
myButton.Controls.Add(myLiteralControl);
myButton.Controls.AddAt(1,new LiteralControl("ChildControl2"));
Response.Write("<b>ChildControl2 is added at index 1</b>");

// Get the Index location of the myLiteralControl LiteralControl
// and write it to the page.
Response.Write("<br /><b>Index of the ChildControl myLiteralControl is " +
    "</b>" + myButton.Controls.IndexOf(myLiteralControl));

Windows 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

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