Query String on image bytes

Hello, I have a code which can pass value of data selected from a row of gridview to another page. The data will then be display in a textbox for updates and edits. It works fine with text and dates, but i was wondering whether it can even obtain the path of the image? This is my code to store the image in database:
protected void Button1_Click(object sender, EventArgs e) { String Back = "Default.aspx"; if (FileUpload1.PostedFile != null && FileUpload1.PostedFile.FileName != "") { byte[] imageSize = new byte [FileUpload1.PostedFile.ContentLength]; HttpPostedFile uploadedImage = FileUpload1.PostedFile; uploadedImage.InputStream.Read (imageSize, 0, (int)FileUpload1.PostedFile.ContentLength); SqlConnection con = new SqlConnection(); con.ConnectionString = ConfigurationManager.ConnectionStrings["S ...