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Control.OnUnload Method

.NET Framework 4.5

Raises the Unload event.

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

'Declaration
Protected Friend Overridable Sub OnUnload ( _
	e As EventArgs _
)

Parameters

e: Type: System.EventArgs
An EventArgs object that contains event data.

Remarks

ASP.NET calls this method to raise the Unload 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 OnUnload method to notify subscribers to the event.

Examples

' Override the OnUnLoad method to set _text to 
' a default value if it is null. 
Protected Overrides Sub OnUnload(ByVal e As EventArgs)
    MyBase.OnUnload(e)
    If _text Is Nothing Then
        _text = "Here is some default text." 
    End If 
End Sub

Version Information

.NET Framework

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

Platforms

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.

Reference

Control Class

System.Web.UI Namespace

Unload

Other Resources

ASP.NET Page Life Cycle Overview

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