private void login_Click(object sender, RoutedEventArgs e) { if (!btn_login.IsEnabled) { return; } btn_login.IsEnabled = false; string name = txtUserName.GetTextBoxText(); string pass = txtPassword.Password; if (name.IsNullOrEmpty() || pass.IsNullOrEmpty()) { "用户名和密码不能为空".MessageBoxDialog(); btn_login.IsEnabled = true; return; } AspNetUser user = new AspNetUser { UserName = name, PasswordHash = pass }; try { info.IsAdmitted(user, ((o, args) => { if (args.Error != null) { args.Error.Message.MessageBoxDialog(); btn_login.IsEnabled = true; return; } WebClient client = o as WebClient; var result = JsonConvert.DeserializeObject <Dictionary <string, string> >(Encoding.UTF8.GetString(args.Result)); string msg = result["Errors"]; if (!msg.IsNullOrEmpty()) { msg.MessageBoxDialog(); } else { string r = result["Succeeded"]; if (null != r && "true" == r) { MainWindow main = new MainWindow(); Application.Current.MainWindow = main; Application.Current.MainWindow.Tag = new LoginedUserInfo { RoleName = result["Role"], Permitted = result["Role"] != "Member",//如为true则有权限进行编辑 UGuid = result["UGuid"], UName = name }; main.Show(); this.Close(); } else { "密码错误".MessageBoxDialog(); } } client.Dispose(); btn_login.IsEnabled = true; })); } catch (Exception ex) { ex.Message.MessageBoxDialog(); } }