The data access DAL tutorial - I created TestTableAdapter but can't use it in code

I am working through the data access tutorial found in asp.net/learn.

I am following along with my own database. My database is called DauphinTag. I created a DataSet called DauphinData. (DauphinData.xsd)

I have a table in my database called Test. I used the Test Table to create a TableAdapter. This went well and I have on my screen in DauphinData.xsd a box that show the Table and below that the TestTableAdapter. If I right click TestTableAdapter is can hit PreviewData and it shows the data in the Test Table correctly.

However, when I try to use the TestTableAdapter in Code: I can't figure out the "using" statement.

In the tutorial they have the following code:

using NorthwindTableAdapters;

I have tried:

using DauphinData;

using DauphinDataTableAdpaters;

using TestTableAdapters;

but nothing works -- it says that the type or namespace cannot be found

What am I doing wrong???

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