I have an RDLC file in which I want to make an expression. Here is the image of properties of expression. I need to concatenate First Name, Last name and Middle Init.
The following examples works for me:
=Fields!FirstName.Value & " " & Fields!LastName.Value
or
="$ " & Sum(Round((Fields!QTD_ORDER.Value - Fields!QTD_RETURN.Value) * Fields!PRICE.Value,2), "Entity_orderItens")
Have a look at MSDN