Convert lambda expression to string

Question

This may seem like an odd request, however with APIs that require a filter property string I thought it would be a nice concept to be able to convert a provided type safe lambda expression which could then be compiled into a query string - similar in essence to Linq -> SQL.

So for example:

 Func<TQueryObj, bool> 
 (invoice) => { invoice.Status == "DRAFT" && invoice.Type == "ACCREF" };

Would convert to

 Status=="DRAFT" && Type=="ACCREF"

I'm using an invoicing API at the moment hence the example. Any means of achieving this fairly simply?

Cheers

SLaks · Accepted Answer · 2011-01-07 13:23:15Z

4

You need to make an inherited ExpressionVisitor, which will recursively crawl through an Expression<Func<...>>.
It won't be easy.

answered Jan 7, 2011 at 13:23

SLaks

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