我的SQL查询命名样式是错误的吗？

我建立了一个asp.net网站，有时会说未指定错误，有时会发生，并非总是如此：

I build a asp.net website, sometimes it says "Unspecified error", it happens sometimes, not always:

 string query = "SELECT TOP 1 * FROM AboutUs";
 var reade = AccessHelper.GetReader(query);      // Unspecified error occurs here
 reader.Read();
 // ..read things

DataSet data = AccessHelper.GetDataSet(narstr);
Repeater1.DataSource = data;

有人说我使用保留的关键字，如查询和读者，似乎如果我将变量名更改为其他内容，网站将好好的。但我不认为这是问题，

我没有使用查询，读者处于SQL状态。

我认为问题是我忘了使用某处的Close（）方法。



我想知道上面的代码是否有命名问题。

some people say that I use the reserved keywords like query, and reader, It seems that if I change the variable name to something else, the website will wrok properly. But I don't think this is the problem,
I didn't use the query, reader in the SQL statemtent.
I think the problem is that I forget use Close() method somewhere.

I want to know the code above whether has naming problem.