Can I transform a Func into an Expression?

Asked Jun 30 '15 at 13:15

Active Jun 30 '15 at 13:25

Viewed 122 times

I'd like to know if it's possible to make a Func<dynamic, string> become Expression<Func<dynamic, string>> ?

I have the following code in my .cshtml file (it's an example, not the whole code).

@Html.CreateSomeThing(
    @<text> 
        @TextBoxFor(model=> model.Id) 
        <span> some html here </span> 
        @DropDownListFor(model => model.Persons) 
    </text>);

In the .cs file i have the following:

public void CreateSomeThing<TValue>(Func<dynamic, object> description = null) { 
    //method body
}

What i'm trying to do is: Get all the expressions inside each @TextBoxFor, and @DropDownListFor. In this case i'd like to get the values from (model.Id and model.Persons). I know that it's possible by using Expression<Func<dynamic,string>> But if i try to change Func<dynamic, object> to Expression<Func<dynamic, string>> I get the error:

Expression lambda cannot have a Body

edited Jun 30 '15 at 13:25

mclark1129

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asked Jun 30 '15 at 13:15

Bruno Assis

There's some kind of HTML escaping issue going on with your code that renders it nearly unreadable. – Asad Saeeduddin Jun 30 '15 at 13:17
2

Sorry, I don't think so: http://stackoverflow.com/questions/3809823/reverse-of-expressionfunct-tresult-compile – Stu Jun 30 '15 at 13:19
Related: http://stackoverflow.com/questions/5179341/a-lambda-expression-with-a-statement-body-cannot-be-converted-to-an-expression – Joshua Garrison Burkhart Jun 30 '15 at 13:20
1

There was this: https://github.com/hazzik/DelegateDecompiler – xanatos Jun 30 '15 at 13:23
It's not a duplicate of mentioned questions. – hazzik Jun 30 '15 at 13:47
Can you please provide more specific example? How many `TextBoxFor`, `DropDownListFor`, etc do you have? What exact `CreateSomeThing` do? – hazzik Jun 30 '15 at 13:48

Can I transform a Func into an Expression?

0 Answers0