Control.OnInit(EventArgs) Method

Reference

Definition

Namespace:: System.Web.UI

Assembly:: System.Web.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Raises the Init event.

protected:
 virtual void OnInit(EventArgs ^ e);

protected public:
 virtual void OnInit(EventArgs ^ e);

protected virtual void OnInit (EventArgs e);

protected internal virtual void OnInit (EventArgs e);

abstract member OnInit : EventArgs -> unit
override this.OnInit : EventArgs -> unit

Protected Overridable Sub OnInit (e As EventArgs)

Protected Friend Overridable Sub OnInit (e As EventArgs)

Parameters

e: EventArgs

An EventArgs object that contains the event data.

Examples

// 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.";
}

' Override the OnInit method to set _text to 
' a default value if it is null.
<System.Security.Permissions.PermissionSetAttribute( _
  System.Security.Permissions.SecurityAction.Demand, _
    Name:="FullTrust")> _
Protected Overrides Sub OnInit(ByVal e As EventArgs)
    MyBase.OnInit(e)
    If _text Is Nothing Then
        _text = "Here is some default text."
    End If
End Sub

Remarks

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.

Applies to

Partajați prin