创建一个记录并在C＃的组合框中更新它 [英] Create a record and update that in a combo box in C#

问题描述

我正在创建员工并与员工指定联系。

员工数据存储在一个文件中，如名称和其他详细信息。存储在其他文件中的设计。当我在那里创建员工姓名的时候，我正在显示一个带有指定表的一个组合框。虽然我正在创建员工名称并不是我需要的组合框，我创建了一个按钮来创建指定。当我点击那个按钮时，我正在调用指定创建表单。我正在进入新的名称。但是这个指定并没有在组合框中更新我在员工创建表单中的内容。那么怎么做。



我尝试过：



我不知道如何刷新该组合框。我每次加载表单时都会刷新组合框。

I am Creating employee and going to connect with employees designation.
Employees data stored in one file like name and other details.Designation stored in other. when I am creating employee name there i am displaying one combo box bounded with designation table.While I am creating employees designation is not there what I need in combo box, I created one button to create designation. When I click on that button I am calling designation create form. There I am Entering new designation. But that designation is not updating in combo box what I placed in employee creation form. So how to do that.

What I have tried:

I am not getting any idea how to refresh that combo box. I am refreshing that combobox every time when I am Loading the form.

推荐答案

使用 DataGridView 可能更简单，例如：

Maybe it's simpler to use a DataGridView, example:

using System;
using System.Configuration;
using System.Data;
using System.Data.Common;
using System.Data.SqlClient;
using System.Windows.Forms;

// Put below lines in a method
string customers = "SELECT * FROM Customers";

using (SqlConnection con = new SqlConnection("Data Source=MY-PCNAME;Initial Catalog=northwind;Integrated Security=True"))
{
	DataSet ds = new DataSet();
	SqlDataAdapter da = new SqlDataAdapter(customers, con);
	da.Fill(ds, "Customers");
	dataGridView.AutoGenerateColumns = true;
	dataGridView.DataSource = ds;
	dataGridView.DataMember = "Customers";
}

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