.net – How to change a global variable value based on linq query while executing

linqlinq-to-xmlvb.net

I have two module-level variables and Linq query. I want the results of the Let clause to change the global variables – is this possible?

For example:

Dim X As Integer = 0
Dim Y As Integer = 0
Sub One()
    Dim query = From e In <picture> _
                    Let X = e.@x _
                    Let Y = e.@y _
                Select <image X=<%= X %> Y=<%= Y %>><%= Two() %></image>
End Sub
Function Two()
    Return <X><%= X %></X>
End Function

What I need to do is assign X and Y in Sub One's query and then have the query automatically use those updated values in Function Two. The Let clause does not allow me to do this as that only sets in-query variables. Does anyone know a solution to this?

Best Solution

You could pass X and Y as arguments to the function Two() eg

Sub One()
    Dim query = From e In <picture> _
                    Let X = e.@x _
                    Let Y = e.@y _
                Select <image X=<%= X %> Y=<%= Y %>><%= Two(X,Y) %></image>
End Sub

Function Two(X as int, Y as int)
    Return <X><%= X %></X>
End Function
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