how to pass query to dataset

I have written my query in stored procedure

In mapper,I have created a function and called this storedprocedure as follows:

Public Function Report(ByVal Id As String, ByVal name As String, ByVal employAs String)
dim dc as DataContextDataContext = New DataContextDataContext
Dim a = dc.storedprocedurename(id,name,employ)
Return a
End Function

In my vb.net codings,I have called this mapper as follows
dim mapper as linqmapper
Dim b= mapper.Report(id,name,employ)

Now i need to pass this "b" to dataset..
Suggest me some ideas