How to write one to one LINQ Query - vb.net

Question

I am a beginner and learning LINQ in VB.Net. I have one table A with column
workID (PK) and idAccount.
And another table B with column
Bid(PK), BName and workID(FK) .
There is one to one relationship between table A and table B.
Now I want to put/copy both the table data to another table C which has column as
workID, idAccount, BName. But I don't know how to write a LINQ query and get both table data and put it in 3rd table. Please help me. I have tried below till now. Below is the code snippet of my project.
Public Function Hello(ByVal dt As A, ByVal dtm As B)
Dim dtReturn As New C
If dt IsNot Nothing AndAlso dt.Any Then
Dim row As WorkOrderRow `row corresponding to the C Table
For Each r In dt
row = dtReturn.NewWorkRow 'traversing the row
With row
.WorkID = r.WorkID
.idAccount = r.idAccount
End With
dtReturn.AddWorkOrderActivityRow(row)
Next
End If
End Function
its working totally fine but I need to put the data of B too. With above code I am able to copy only data of table A. Kindly guide me how should I write my LINQ query and traverse it.
I should be able to do something like
With row
.WorkID = x.WorkID
.idAccount = x.idAccount
.BName = x.BName
End With
x being the row generated by the query.

Answer 1

You probably would like to join the result of A and B first (sample here: https://msdn.microsoft.com/en-us/library/bb311040.aspx), then create rows of C. This is much easier.
Dim newCs = (From a In tableA
Join b In tableB On a.workID Equals b.workID
Select New TableC With {
.workID = a.workID,
.idAccount = a.idAccount,
.BName = b.BName
})