Example usage FirstOrDefaultDynamic with VB.NET-CodePudding

I'm using VB in a project, together with EF.PLUS https://entityframework-plus.net/

I want to use FirstOrDefaultDynamic, but I didn't found any example for usage in VB - all examples are in C#.

Specifically I have an array of array of strings, and I want to find an element in it:

dim a = {
    {"a", "a1"},
    {"b", "b1"},
    {"c", "c1"}
}

dim elem = a.FirstOrDefaultDynamic("x(0) = y", new with {y="a"})

But I get error on evaluating the expression.

FirstOrDefaultDynamic accepts only string expression as parameter, not predicate (function).

The C# example is

var list = ctx.WhereDynamic(x => "x > 2").ToList();

but it still accepts a function returning an string expression which is to be evaluated.
Any idea on the VB syntax?

CodePudding user response：

Disclaimer: I'm the owner of the project Entity Framework Plus

Only the C# syntax is supported.

So if you want to use any Dynamic method such as FirstOrDefaultDynamic from this library, you will need to stick with the C# syntax.

There is no plan to support VB syntax.

CodePudding user response：

Just to clarify the answer from Jonathan Magnan :

The expression string used as parameter should use C# syntax, even if the call is made from VB.

Usage example:

Dim elem = a.FirstOrDefaultDynamic("x => x[0]=y", New With {.y = "MyTestVal"})