小编Chi*_*han的帖子

SqlDataReader rdr = null;
con = new SqlConnection(objUtilityDAL.ConnectionString);
using (SqlCommand cmd = con.CreateCommand())
{
    try
    {
        if (con.State != ConnectionState.Open)
            con.Open();
        cmd.CommandType = CommandType.StoredProcedure;
        cmd.Parameters.Add(Parameter);
        cmd.CommandText = _query;
        rdr = cmd.ExecuteReader();
    }
    catch (Exception ex)
    {
        throw ex;
    }
}

在上面的代码中,sqlconnection在托管代码中打开.因此,在结束USING的范围时,是否会自动处理连接对象？