Get value of variable named in a string

Question

Is there any way to get the value of a variable that has been named in a string. For instance:

Dim number As Integer = 12

Dim numberCopy As Integer = Convert("number")
' numberCopy will now equal 12
' Convert is the function to convert the string to the variable

score 3 · Accepted Answer · answered May 04 '16 at 19:27

3

Something like that can be done only with Introspection, and only if the variable holding the value is a property of a class. Your example, where the variable is only temporarily known inside a function, cannot be made work as you like.

To learn more about Introspection, see the documentation and examples of the same name.

answered May 04 '16 at 19:27

Thomas Tempelmann

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Thanks for the answer. I wasn't sure if Introspection could access native types. I also realised the flaw in my plan after I posted the question. – Mark Oxley May 04 '16 at 19:36

score 2 · Answer 2 · edited Sep 26 '16 at 12:44

You can also use a Dictionary instead of straight properties and variables.

For instance

   dim d as new dictionary
   d.value("number") = 12

Then when you need the value, you can do

   Dim numberCopy As Integer = d.value("number")

Nice thing about Dictionary is since keys as well as values are variant, you can throw at it pretty much anything, all variable types, as well as objects.

See Language Reference

Get value of variable named in a string

2 Answers2