private void btn_Add_Click(object sender, EventArgs e) { Agent model = new Agent(); // 本项目的 Service 文件夹内的 Agent 类(属于 Model 类) string _name = txt_Name.Text.Trim(); if (string.IsNullOrEmpty(_name)) { MessageBox.Show("客户名称不能为空!"); txt_Name.Focus(); return; } if (model.Exists(_name)) { MessageBox.Show("该客户名称已存在!"); txt_Name.Focus(); return; } model.Name = _name; model.LevelName = cbx_Level.SelectedValue.ToString(); model.Contact = txt_Contact.Text.Trim(); model.Phone = txt_Phone.Text.Trim(); model.Address = txt_Address.Text.Trim(); model.Tel = txt_Tel.Text.Trim(); model.Fox = txt_Fox.Text.Trim(); int re = model.Add(); if (re > 0) { MessageBox.Show("添加成功!"); txt_Name.Text = ""; cbx_Level.SelectedIndex = 0; txt_Name.Focus(); txt_Contact.Text = ""; txt_Phone.Text = ""; txt_Address.Text = ""; txt_Fox.Text = ""; txt_Tel.Text = ""; BindDGV(""); } else { MessageBox.Show("添加失败!"); } }