Hi DayanaArul,

You could achieve this using code similar to the following:

    protected void Button1_Click(object sender, EventArgs e)

    {

        WebDocumentExporter1.ExportMode = Infragistics.Web.UI.GridControls.ExportMode.Custom;

        WebDocumentExporter1.Format = Infragistics.Web.UI.GridControls.FileFormat.PDF;

        Report r = new Report();

        WebDocumentExporter1.Export(r, WebDataGrid1);

        r.Publish(Server.MapPath("report.pdf"), FileFormat.PDF);

    }

This will save the grid in a pdf file in your project’s root directory.

Please let me know if you have any questions.