C# sqlserver

一、用法总结

二、代码实例

  private void OpenDB()
        {
            try
            {             
               
                if (conn.State == System.Data.ConnectionState.Closed)
                {
                    conn.ConnectionString = "server=WIN-4SG5D35BGK7\SQLEXPRESS;database=TestDB;uid=sa;pwd=123";
                    conn.Open();

                }

            }
            catch(Exception ex)
            {
                ShowRunning(false);
                ShowMessage(true, "数据库连接失败,会造成测试数据无法保存");
            }
           

        }