Export datagrid to excel

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ASP.NET

i jst need to convert a datagrid to excel.For that i wrote the following code,

Response.Clear();
        Response.AddHeader("content-disposition", "attachment;filename=DailyReport.xls");
        Response.Charset = "";
        Response.ContentType = "~/SDailyReport.xls";
        System.IO.StringWriter stringWrite = new System.IO.StringWriter();
        System.Web.UI.HtmlTextWriter htmlWrite =
        new HtmlTextWriter(stringWrite);

        DataGrid g1 = new DataGrid();
        List<griddisplay> obj1 = new List<griddisplay>();
        obj1 = bl.Getgrid();
        g1.DataSource = obj1;
        g1.DataBind();
        g1.RenderControl (htmlWrite);
        Response.Write(stringWrite.ToString());
        Response.End();

i done this code in a system and got the result.i tried the same in another system where ms office is not installed and its not showing any result.SO

whether its essential to have ms office installed in the system to export to excel?