多个SQL查询asp.net c#

我需要在一个函数中运行几个查询,我是否必须为每个函数创建一个新的SqlConnection？或者有一个连接,但不同的SqlCommands也可以工作？

谢谢,

编辑：这会有用吗？

using (SqlConnection conn = new SqlConnection(connectionString))
      {
        conn.Open();

        using (SqlCommand cmd = new SqlCommand(query1,conn))
        {
            cmd.ExecuteNonQuery();
        }

        using (SqlCommand cmd = new SqlCommand(query2,conn))
        {
            cmd.ExecuteNonQuery();
        }

        using (SqlCommand cmd = new SqlCommand(query3,conn))
        {
            cmd.ExecuteNonQuery();
        }

    }

解决方法

using (SqlConnection connection = new SqlConnection(connectionString))
{
    connection.Open();

    string sql1 = "SELECT ID,FirstName,LastName FROM VP_PERSON";
    string sql2 = "SELECT Address,City,State,Code FROM VP_ADDRESS";

    using (SqlCommand command = new SqlCommand(sql1,connection))
    {
        //Command 1
        using (SqlDataReader reader = command.ExecuteReader())
        {
            // reader.Read iteration etc
        }

    } // command is disposed.

    using (SqlCommand command = new SqlCommand(sql2,connection))
    {

        //Command 1
        using (SqlDataReader reader = command.ExecuteReader())
        {
            // reader.Read iteration etc
        }

    } // command is disposed.

   // If you don't using using on your SqlCommands you need to dispose of them 
   // by calling command.Dispose(); on the command after you're done.

} // the SqlConnection will be disposed

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