Data Controls :: Export GridView With Images To Excel - Image Path?

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In above website,You have stored imagepath as Image/file.jpg. I have created a database and stored image as "~/Images/File.jpg" and then how should i show that image in excel.pdf from gridview.

When i an making this method

protected  string GetUrl(string imagepath) {
    string[] splits = Request.Url.AbsoluteUri.Split('/');
    if (splits.Length  >= 2) {
        string url = splits[0] + "//";
        for (int i = 2; i < splits.Length - 1; i++) {
            url += splits[i];
            url += "/";
        } return url +  imagepath;
    } return imagepath;
}

Its not working for me..I want to export gridview data in excel/pdf but my image in database in like "~/Images/file.jpg"..