if (FileUpload1.HasFile == true && FileUpload1.PostedFile != null)
        {
            int _size = 9437184;// equal 9 mb
            string _fileExt = System.IO.Path.GetExtension(FileUpload1.FileName);
            if (_fileExt.ToLower() == ".doc" || _fileExt.ToLower() == ".docx" )
            {
                if (FileUpload1.PostedFile.ContentLength <= _size)
                {
                    string CarFile = Guid.NewGuid().ToString() + Path.GetExtension(FileUpload1.FileName);
                    FileUpload1.SaveAs(Request.PhysicalApplicationPath + "Car_Image\\" + CarFile);

                }
                else
                {
                    FileUpload1.Focus();
                    ClientScript.RegisterStartupScript(Type.GetType("System.String"), "messagebox", "");
                }
            }
            else
            {
                FileUpload1.Focus();
                ClientScript.RegisterStartupScript(Type.GetType("System.String"), "messagebox", "");
            }
        }
        else
        {
            //-- if person not has image set default  for him         
        }