private void loginButton_Click(object sender, EventArgs e) { User user = Remittance.entities.Users.FirstOrDefault(u => u.Name == userNameTextBox.Text); if (user != null) { Remittance.userID = user.UserID; Remittance.userName = user.Name; DialogResult = DialogResult.OK; } else { Remittance.ShowMessageBox("用户名不存在。"); } }
private void addButton_Click(object sender, EventArgs e) { String userName = userNameTextBox.Text; if (userName == String.Empty) { Remittance.ShowMessageBox("用户名不能为空。"); return; } if (Remittance.entities.Users.Any(u => u.Name == userName)) { Remittance.ShowMessageBox("用户名已存在。"); return; } User user = new User() { Name = userName, TeamID = (byte)(User.Team)teamComboBox.SelectedValue }; Remittance.entities.Users.Add(user); Remittance.entities.SaveChanges(); Remittance.ShowMessageBox("用户添加完毕。"); }