C#链接数据库：SQL Server 2008

windows验证方式 string connectionStringTest = @"Data Source=ADMINISTRATOR\SQLEXPRESS;Initial Catalog=TestDB;Integrated Security=SSPI; "; //建立信任连接（具体含义与同其他方式的区别还需学习） string connectionStringTest = @"server=ADMINISTRATOR\SQLEXPRESS;Initial Catalog=TestDB;Integrated Security=True"; //网站连接数据库的标准方式 string connectionStringTest = @"server=ADMINISTRATOR\SQLEXPRESS;database=TestDB;user id=testuser;password=123456"; //应用程序连接数据库的标准方式 string connectionStringTest = @"Data Source = ADMINISTRATOR\SQLEXPRESS; Initial Catalog = TestDB; User Id = testuser; Password = 123456;";

链接、断开、释放资源的代码：

SqlConnection conn = new SqlConnection(connectionStringTest);
try
{     
      conn.Open();
      MessageBox.Show("数据库链接成功！","提示");
}
catch (Exception e)
{
         string message = e.Message;
}
finally
{
       conn.Close();
       conn.Dispose();
}

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