protected void btnLogin_Click1(object sender, EventArgs e) { cUsuarios obj = new cUsuarios(txtUsuario.Text, txtPsw.Text); String msj = obj.Ingresar(); if (msj.Equals("Acceso correcto")) { Session.Add("idUsuario", obj.PersonID); Server.Transfer("Midas.aspx", true); } else if (msj.Equals("Contrase?a incorrecta")) { String alert = "$.alert({title: 'Oh!',theme: 'material',content: 'Contraseña incorrecta',buttons:{cerrar: {text:'Cerrar',btnClass:'btn-info'}}}); "; ScriptManager.RegisterStartupScript(this.Page, this.Page.GetType(), "err_msg", alert, true); } else if (msj.Equals("Usuario incorrecto")) { String alert = "$.alert({title: 'Oh!',theme: 'material',content: 'Usuario inexistente',buttons:{cerrar: {text:'Cerrar',btnClass:'btn-info'}}}); "; ScriptManager.RegisterStartupScript(this.Page, this.Page.GetType(), "err_msg", alert, true); } }