Converting String Value to a Formula for calculation?

[SiewSa]

I have come to a situation that I need to use the result of a string
variable as a formula for performing calculation.

As an example below:

Dim X As Integer

Dim Y As Integer

Dim Result As Integer

Dim Formula As String = "X + Y"

X = 3

Y = 5

Result = Formula

MessageBox.Show(Result)

I know that the above example is not working but I am appreciate if someone
out there can help me on that.

I think I have gone through some similar questions inside the newsgroup but
I am not too sure on the solutions. Many thanks to someone out there who is
answering the above question again and if possible, give me an example.

Thank you.

[Cor Ligthert]

Hi SiewSA,

The most used are I think
(1+1).toString that is the same as "2"
Dim myvalue as integer = Cint("2")
Dim myvalue as double = Cdbl("2")

I hope this helps?

Cor

[Cor Ligthert]

Hi SiewSa,

I see now you want an Eval function, that is not build in.

However you can read here what is written about that in this newsgroup.

http://tinyurl.com/2fznf

Cor

[Herfried K. Wagner [MVP]]

* "SiewSa" <st***********@kerks.com> scripsit:

I have come to a situation that I need to use the result of a string
variable as a formula for performing calculation.

As an example below:

Dim X As Integer

Dim Y As Integer

Dim Result As Integer

Dim Formula As String = "X + Y"

X = 3

Y = 5

Result = Formula

MessageBox.Show(Result)

I know that the above example is not working but I am appreciate if someone
out there can help me on that.

I think I have gone through some similar questions inside the newsgroup but
I am not too sure on the solutions. Many thanks to someone out there who is
answering the above question again and if possible, give me an example.

Samples:

<URL:http://www.codeproject.com/useritems/evaluator.asp>
<URL:http://www.codeproject.com/csharp/livecodedotnet.asp>

MathLib
<URL:http://www.palmbytes.de/content/dotnet/mathlib.htm>

If you have a DevX account:

<URL:http://www.devx.com/codemag/Article/10352/0/page/1/>

--
Herfried K. Wagner [MVP]
<URL:http://dotnet.mvps.org/>