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Control.EnsureChildControls Method

Determines whether the server control contains child controls. If it does not, it creates child controls.

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

protected virtual void EnsureChildControls()

This method first checks the current value of the ChildControlsCreated property. If this value is false, the CreateChildControls method is called.

ASP.NET calls this method when it needs to make sure that child controls have been created. In most cases, custom server control developers do not need to override this method. If you do override this method, use it in a similar fashion as its default behavior.

The following example uses the EnsureChildControls method to ensure that the current server control has child controls. It then gets or sets a Text property for a child TextBox Web control in the current server control's ControlCollection object.

Security noteSecurity Note:

This example has a text box that accepts user input, which is a potential security threat. By default, ASP.NET Web pages validate that user input does not include script or HTML elements. For more information, see Script Exploits Overview.

// Ensure the current control has children, 
// then get or set the Text property. 
 public int Value {
    get {
        this.EnsureChildControls();
        return Int32.Parse(((TextBox)Controls[1]).Text);
    }
    set {
        this.EnsureChildControls();
        ((TextBox)Controls[1]).Text = value.ToString();
    }
 }

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

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

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