void UserCheck() { //string sourcepath = ""; UserInfoBll userBll = new UserInfoBll(); DataTable dt = userBll.AvailableUser(txtUsername.Text.ToString().Trim()); if (dt.Rows.Count == 0 && txtUsername.Text.ToString().Trim() != "") { intUserAvail = 0; //checkUser.Visible = true; imgAvailable.Visible = true; imgNotAvailable.Visible = false; } else { intUserAvail = 1; imgAvailable.Visible = false; imgNotAvailable.Visible = true; } }