protected void login_Click(object sender, EventArgs e) { string u = uname.Text; string p = pwd.Text; string s = ""; DataTable dt = u1.login(u, p); if (dt.Rows.Count > 0) { string user = dt.Rows[0][0].ToString(); Session["uname"] = user; Response.Write("<script>alert('Login succesful!')</script>"); Response.Redirect("home.aspx"); } else if (uname.Text == s & pwd.Text == s) { Response.Write("<script>alert('Enter Email ID and Password!')</script>"); } else { Response.Write("<script>alert('Login invalid! Check username or password')</script>"); uname.Text = ""; } }