时间:2021-07-01 10:21:17 帮助过:2人阅读
HoverTreeSCJ 为数据库的名称
3.在项目Reference中添加引用 System.configuration
在文件中 添加引用 using System.configuration;
using System.Data.SqlClient;
4.获取App.config中的连接字符串
public string ConnString = System.Configuration.ConfigurationManager.AppSettings["connString"];
5.连接数据库,读取数据
SqlConnection conn = new SqlConnection(ConnString); string strSql = "SELECT * FROM Basetb"; SqlCommand cmd = new SqlCommand(); cmd.CommandText = strSql; cmd.Connection = conn; conn.Open(); SqlDataReader dr = cmd.ExecuteReader(); if (dr.HasRows) { while (dr.Read()) { this.textBox1.Text = dr[0].ToString(); } } conn.Close(); /* hovertree.top */
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winForm连接数据库(sqlserver2005)
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