Having Problem Connecting To Sqlce DB On My Device..

I'm getting the following error when trying to connect to the sqlce database on my mobile device.
"Specified SQL server not found: (Program FilesDBA_test.sdf)"

The DB file exists in the directory specified and is in working order I was able to run a simple sql query against it (SELECT * FROM A_Test). So, I'm a little confused on how to correct this problem??? I'm assuming it's some type of mapping issue with the program and the DB but I'm not sure how to correct..





Code Snippet

Public Function DB_Dataset() As DataSet 'returns a dataset with query results
' Make the database connection.
Dim myConnection As SqlConnection = New SqlConnection(GetConnectionString())

'Open the connection


myConnection.Open()
'Open a set of records
Dim ad As SqlDataAdapter = New SqlDataAdapter("SELECT [names] FROM testtable", myConnection)
Dim ds As DataSet = New DataSet()

'Close the connection


myConnection.Close()
End Function

Private Function GetConnectionString() As String
Return "Data Source=(" & apppath + "DBA_test.sdf);Database=A_test; Integrated Security=SSPI;"
End Function
Also since there's a DataSet that contains the connection information shouldn't I be able to access this directly instead of having to supply the connection information in a connect string?

Thanks.