C#中的ConfigurationManager类引用方法

OStack程序员社区-中国程序员成长平台 › 门户 › 编程› Node.js›Node.js教程

原作者: [db:作者] 来自: [db:来源] 收藏邀请

后来终于找到一个解决方法，就是在解决方案资源管理器里找到类文件选择“引用”，然后右击选择“添加引用”，并且从 .net 中找到System.Configuration把它加上去就OK啦

实例：DataGridView显示数据

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using DevExpress.XtraEditors;
using System.Data.SqlClient;
using System.Configuration;

namespace WindowsApplication1
{
    public partial class XtraForm1 : DevExpress.XtraEditors.XtraForm
    {
        public XtraForm1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string customers = "select * from Customers";
            using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["northwind"].ConnectionString))
            {

                DataSet dt = new DataSet();
                SqlDataAdapter da = new SqlDataAdapter(customers, con);
                da.Fill(dt, "Customers");
                dataGridView1.AutoGenerateColumns = true;
                dataGridView1.DataSource = dt;
                dataGridView1.DataMember = "Customers";
            }
        }
    }
}