Querying Oracle Database using chinese characters

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C#

ASP.NET

Oracle

I am faced with a problem querying data from an Oracle 11g table. I have stored chinese characters (names) in one of the table columns.
The data type for this column of interest is NVARCHAR2(10).

As a test I issue a query using exactly the same string of data thru a ASP.NET webform. However, no records were surfaced thru this test query.

Another test using Windows Forms with the same query surface records of interest.

The NLS_CHARACTERSET of the database is AL32UTF8.

I am using Visual Studio 2010 Framework 3.5

What might be the problem resulting in the Windows Form having a hit on the data while the ASP.NET webform having a miss?