Issues with Dynamic LINQ Queries Using System.Linq.Dynamic.Core in C# 9
I'm following best practices but I'm reviewing some code and After trying multiple solutions online, I still can't figure this out. I'm trying to implement dynamic LINQ queries using the `System.Linq.Dynamic.Core` library in a C# 9 application, but I keep encountering an `InvalidOperationException` when executing my query. The goal is to allow users to filter a list of objects dynamically based on their input. Here’s a simplified version of the code I’m using: ```csharp using System; using System.Collections.Generic; using System.Linq; using System.Linq.Dynamic.Core; public class Product { public string Name { get; set; } public decimal Price { get; set; } } public class Program { public static void Main() { var products = new List<Product> { new Product { Name = "Apple", Price = 1.20m }, new Product { Name = "Banana", Price = 0.80m }, new Product { Name = "Cherry", Price = 2.00m } }; string userInput = "Price > 1"; // User input for filtering var filteredProducts = products.AsQueryable().Where(userInput).ToList(); foreach (var product in filteredProducts) { Console.WriteLine(product.Name); } } } ``` I expected to get a list of products with a price greater than 1, but instead, I’m receiving the following error message: `InvalidOperationException: The LINQ expression 'Where(p => (p.Price > 1))' is not valid in this context.` I’ve double-checked to ensure that the `System.Linq.Dynamic.Core` package is properly installed and referenced in my project. I also tried using a simple string without any comparison and it worked fine, for instance, `"Name == 'Apple'"` returned the correct result. It seems to be an issue specifically with numeric comparisons. Is there something specific I need to do to handle numeric types when using dynamic queries in this library? Any insights or solutions would be greatly appreciated. I'm working on a API that needs to handle this. I recently upgraded to Csharp latest. Am I approaching this the right way? This is part of a larger REST API I'm building.