Question

string connString = "server=.;database=StudentManagement;uid=sa2;pwd=123;";

string connString = "server=.;database=StudentManagement;uid=sa2;pwd=123;";
SqlConnection connection = new SqlConnection(connString);
connection.Open();
MessageBox.Show("打开数据库连接成功");
connection.Close();
MessageBox.Show("关闭数据库连接成功");
已使用空间名using System.Data.SqlClient;...........
跪求帮忙，，网上都搜遍了，也找不到方法...

Answer 1

I don't know.

Answer 2

纳尼 什么啊

Answer 3

基本原理