visual studio 2005 TableAdpter自动生成返回值的类型

例如: select count(*) from
理论上返回：int类型的数字一个
但是实际上IDE自动生成代码有时候会是：
ScalarCallRetval="System.Object, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
但应该是：
ScalarCallRetval="System.Int32, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
那应该怎么解决？
MSDN上这样写到：

To execute a TableAdapter query that returns a single (scalar) value

• Create an instance of the TableAdapter, declare a variable to hold the return value, and assign it the result of the query. The following example assumes that there is a query named CustomerCount on the QueriesTableAdapter.

  NorthwindDataSetTableAdapters.QueriesTableAdapter scalarQueriesTableAdapter;
  scalarQueriesTableAdapter = new NorthwindDataSetTableAdapters.QueriesTableAdapter();
  
  int returnValue;
  returnValue = (int)scalarQueriesTableAdapter.CustomerCount();