Gridview Export to Excel

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ASP.NET

Hi,
I tried to Export a gridview to Excel. And i succeded with the help from Forum and internet. In that code there is a part like below. Can anyone tell me what it is and how it works???

<pre lang="midl">

public override void VerifyRenderingInServerForm(Control control)
    {

        // Confirms that an HtmlForm control is rendered for the
        specified ASP.NET server control at run time.

    }