How to getting data from Excel or PDF or Word in Asp.net 2010 using RADGrid Control?

i am getting error when i upload RADGrid Control on server it run properly but when i export data into PDF or Word or Excel, not display data only display html tags like this

<span class=highlight></span>M<span class=highlight></span>M<span class=highlight></span>/<span class=highlight></span>P<span class=highlight></span>I<span class=highlight></span>/<span class=highlight></span>G<span class=highlight></span>U<span class=highlight></span>D<span class=highlight></span>M<span class=highlight></span>/<span class=highlight></span>8<span class=highlight></span>

I'm using code like this:

 protected void ExportToPdf_Click(object sender, ImageClickEventArgs e)
    {
        RadGrid1.MasterTableView.Expor开发者_JAVA技巧tToPdf();
    }
    protected void ExportToExcel_Click(object sender, ImageClickEventArgs e)
    {
        RadGrid1.MasterTableView.ExportToExcel();

    }
    protected void ExportToWord_Click(object sender, ImageClickEventArgs e)
    {
        RadGrid1.MasterTableView.ExportToWord();
}

i attached one sample image where you can check your exported pdf's html. please check and let me know if any concern.