eval equivalent

Andrea Williams

I'm looking for an equivalent to the JavaScript function 'eval'. Anyone
know one that will work in C#? I'm guessing that it doesn't exist due to
strong data typing, but thought I'd ask.

Thx!
Andrea

Nov 16 '05 #1

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6367

Nicholas Paldino [.NET/C# MVP]

Andrea,

There really isn't anything that will allow you to do this. C# is not
an interpreted language, like JavaScript is. Because of that, there is no
easy eval functionality. You could write the code out yourself, and create
an assembly dynamically, but you would have to use reflection to make the
calls, or have an interface that is defined elsewhere implemented on the
classes you create.

You are better off creating an interface/base class definition and then
having classes derive from that.

Hope this helps.

--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com

"Andrea Williams" <an*******@hotmailIHATESPAM.com> wrote in message
news:en**************@TK2MSFTNGP09.phx.gbl...

I'm looking for an equivalent to the JavaScript function 'eval'. Anyone
know one that will work in C#? I'm guessing that it doesn't exist due to
strong data typing, but thought I'd ask.

Thx!
Andrea

Nov 16 '05 #2

Andrea Williams

I suspected something like this... Thanks!

Andrea
"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.com> wrote in
message news:uO**************@TK2MSFTNGP15.phx.gbl...

Andrea,

There really isn't anything that will allow you to do this. C# is not
an interpreted language, like JavaScript is. Because of that, there is no
easy eval functionality. You could write the code out yourself, and create an assembly dynamically, but you would have to use reflection to make the
calls, or have an interface that is defined elsewhere implemented on the
classes you create.

You are better off creating an interface/base class definition and then having classes derive from that.

Hope this helps.

--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com

"Andrea Williams" <an*******@hotmailIHATESPAM.com> wrote in message
news:en**************@TK2MSFTNGP09.phx.gbl...
I'm looking for an equivalent to the JavaScript function 'eval'. Anyone
know one that will work in C#? I'm guessing that it doesn't exist due to strong data typing, but thought I'd ask.

Thx!
Andrea

Nov 16 '05 #3

Willy Denoyette [MVP]

No C# doesn't have it, but you can always build a managed assembly using
JScript.Net that executes a string passed to a function that executes the
'eval' function.

Willy.

"Andrea Williams" <an*******@hotmailIHATESPAM.com> wrote in message
news:en**************@TK2MSFTNGP09.phx.gbl...

I'm looking for an equivalent to the JavaScript function 'eval'. Anyone
know one that will work in C#? I'm guessing that it doesn't exist due to
strong data typing, but thought I'd ask.

Thx!
Andrea

Nov 16 '05 #4

John Wood

You could try this:
http://www.codeproject.com/csharp/runtime_eval.asp

--
John Wood
EMail: first name, dot, second name at priorganize.com
"Andrea Williams" <an*******@hotmailIHATESPAM.com> wrote in message
news:en**************@TK2MSFTNGP09.phx.gbl...

I'm looking for an equivalent to the JavaScript function 'eval'. Anyone
know one that will work in C#? I'm guessing that it doesn't exist due to
strong data typing, but thought I'd ask.

Thx!
Andrea

Nov 16 '05 #5

Scott Allen

One more sample here:
http://odetocode.com/Articles/80.aspx

--
Scott
http://www.OdeToCode.com

On Tue, 7 Sep 2004 13:46:12 -0700, "Andrea Williams"
<an*******@hotmailIHATESPAM.com> wrote:

I'm looking for an equivalent to the JavaScript function 'eval'. Anyone
know one that will work in C#? I'm guessing that it doesn't exist due to
strong data typing, but thought I'd ask.

Thx!
Andrea

Nov 16 '05 #6

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