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Control.OnInit Method

Raises the Init event.

Namespace:  System.Web.UI
Assembly:  System.Web (in System.Web.dll)
protected internal virtual void OnInit(
	EventArgs e
)

Parameters

e
Type: System.EventArgs

An EventArgs object that contains the event data.

ASP.NET calls this method to raise the Init event. If you are developing a custom control, you can override this method in order to provide additional processing. If you override this method, call the base control's OnInit method to notify subscribers to the event.

// Override the OnInit method to set _text to 
// a default value if it is null.
[System.Security.Permissions.PermissionSet
    (System.Security.Permissions.SecurityAction.Demand, 
     Name="FullTrust")] 
protected override void OnInit(EventArgs e)
{
   base.OnInit(e);
   if ( _text == null)
        _text = "Here is some default text.";
}

.NET Framework

Supported in: 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

Windows Phone 8.1, Windows Phone 8, 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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