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连接数据库

using System.Data.SqlClient;

static
void Main(string[] args) { string connString = @"Data Source=.; Initial Catalog=lh0216; User ID=sa;pwd=Founder123"; //出了using括号objConnection类会被自动释放 using (SqlConnection objConnection = new SqlConnection(connString)) { objConnection.Open(); Console.WriteLine("数据库连接成功。"); } Console.ReadKey(); }