Is there a string math evaluator in .NET?

Question

If I have a string with a valid math expression such as: ``` String s = "1 + 2 * 7"; ``` Is there a built in library/function in .NET that will parse and evaluate that expression for me and return the result? In this case 15.

Accepted Answer

You could add a reference to Microsoft Script Control Library (COM) and use code like this to evaluate an expression. (Also works for JScript.)

```
Dim sc As New MSScriptControl.ScriptControl()
sc.Language = "VBScript"
Dim expression As String = "1 + 2 * 7"
Dim result As Double = sc.Eval(expression)
```

Edit - C# version.

```
MSScriptControl.ScriptControl sc = new MSScriptControl.ScriptControl();
sc.Language = "VBScript";
string expression = "1 + 2 * 7";
object result = sc.Eval(expression);            
MessageBox.Show(result.ToString());
```

Edit - The ScriptControl is a COM object. In the "Add reference" dialog of the project select the "COM" tab and scroll down to "Microsoft Script Control 1.0" and select ok.

Is there a string math evaluator in .NET?

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