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Is there a framework out there that can read a string of C# that is pulled from a database and run it as code?

Kind of like a calculator works...

I just want an idea of how hard it is to do something like this. Or to develop something that can make it happen.

Let's say there is a nvarchar column that I return from a database that has something like this in it:

(a + b - c)

In my code I know what a, b, and c are equivalent to, but how do I replace the values and get it to run as code? Essentially it is what a compiler does.

If you want to disregard the SQL part, how would I execute a string with a formula in it as code in my application:

int a = 1;
int b = 2;
int c = 1;
string formula = "(a + b - c)"
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  • Example dataset/outcome? What have you already done? Commented Jul 2, 2015 at 18:32
  • Read the code. Put it into a file. Compile the file appropriately. Run the executable. Commented Jul 2, 2015 at 18:34
  • I updated my post with a little more information, but the formulas could be a lot more complex. Commented Jul 2, 2015 at 18:35
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    @ZoffDino not sure if that is what I need. The goal is to be able to take a string of code and execute it as code. We can disregard the sql part. Commented Jul 2, 2015 at 18:37
  • Do you want to execute it locally (in your C# client), or on the server (as stored procedure)? Commented Jul 2, 2015 at 18:38

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If you would use SQL server for "calculating", then it would be totally simple. You could put some T-SQL code in your nvarchar database field, and then let it execute it at runtime on the server. (Basically this is then Dynamic SQL)

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2 Comments

So you saying if all of the calculations / formulas could be written as sql then i could store them as strings and run them using sp_executesql? How would I handle plugging in the variables of the formulas?
@matthewpeterson yes exactly, with sp_execute! and even parameters can be passed from outside, thats pretty cool. i'll show you later, i'm out at nightlife currently! ;)

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