while am uploding image it can..............................................

if (fileup.HasFile)
                    {
                        file = fileup.FileName;
                        bool ans = checkFileExtension(file);
                        if (ans)
                        {
                            try
                            {
                                fileadd = (Server.MapPath("Image\\") + txtMulShortName.Text + "." + file.Substring(file.LastIndexOf(".") + 1).ToString());
                                fileup.SaveAs(fileadd);
                            }
                            catch (Exception ex) { }
                            locLogo.ImageUrl = "~/Image/" + txtMulName.Text + "." + file.Substring(file.LastIndexOf(".") + 1).ToString();
                        }
                        else
                        {
                            msgmulliteral.Text = "Invalid file type of Logo, select only JPG files";
                        }

                    }