Produce Dynamic LINQ strings from expression trees

[zspitz]

I've written a library producing various string representations of expression trees. I am now considering a Dynamic LINQ representation. In other words, from an expression tree like this:

Expression<Func<Person, bool>> expr = p => p.BirthDate.DayOfWeek == DayOfWeek.Tuesday

produce a string like the following:

$.BirthDate.DayOfWeek = Tuesday

Does System.Linq.Dynamic.Core have such functionality?

Also, for this purpose, where can I find the most up-to-date documentation describing the System.Linq.Dynamic.Core string syntax?

[zspitz]

Something similar has been discussed in #230 .

[JonathanMagnan]

Hello @zspitz ,

No, Dynamic LINQ doesn't offer this kind of feature.

Perhaps david-garcia-garcia in the mentioned issue could maybe help you more.

The most up to date documentation which has been added during the summer can be found here: https://dynamic-linq.net/overview

Best Regards,

Jon

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[zspitz]

@JonathanMagnan I am very pleased to let you know that as of version 3.2, the ExpressionTreeToString library can produce corresponding Dynamic LINQ for many expressions. For example:

public class Person {
    public string LastName { get; set; }
    public string FirstName { get; set; }
    public DateTime DOB { get; set; }
}
Expression<Func<Person, bool>> filter = p => p => 
    p.LastName == "A" || 
    p.FirstName == "B" || 
    p.DOB == DateTime.MinValue || 
    p.LastName == "C" || 
    p.FirstName == "D";
Console.WriteLine(expr.ToString("Dynamic LINQ"));
// prints:
/*
    LastName in ("A", "C") || DOB == DateTime.MinValue || FirstName in ("B", "D")
*/

Please feel free to refer to the library in help and documentation.