"Invalid type owner for dynamic method" exception is thrown when any kind of sorting is applied

[ZenithElevate]

Whether I programmatically call ApplySort("sort column name") or click the sortable columns on a bound data grid view, the line 120 in AggregateBindingListView.cs throws this exception. In one particular case the underlying model has an int property SortOrder, and I use "SortOrder" with ApplySort.

[ZenithElevate]

This issue is mentioned online in connection with Dapper where an interface is used for the return type. In my case the binding list view is used to display precisely that: an interface, which is used to represent the human-readable view of the actual model. Likely that is the root cause.

[carlosxjose]

Can you share an example repo

[ZenithElevate]

Create a new .NET 8 WinForms project. Replace the contents of Form1.cs with the following:

using Equin.ApplicationFramework;
using System.ComponentModel;

namespace BindingListViewTest
{
    internal interface IModelView
    {
        [DisplayName("Id")]
        public string IdString { get; }
        public string Name { get; set; }
        public string Description { get; set; }
    }

    internal class Model : IModelView
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public string Description { get; set; }
        public string Type { get; set; }

        public string IdString => Id.ToString();
    }

    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();

            var items = new List<Model>() {
                new() { Id = 0, Name = "0" },
                new() { Id = 1, Name = "1" },
                new() { Id = 2, Name = "2" },
                new() { Id = 3, Name = "3" },
            };

            var source = new BindingListView<IModelView>(items);
            var grid = new DataGridView() { DataSource = source, Dock = DockStyle.Fill };
            Controls.Add(grid);
            //source.ApplySort("Name");
        }
    }
}

Run the project. Try to sort the grid by clicking the header of any column. That will throw the exception.
Also the exception will be thrown if you un-comment the last line.

[carlosxjose]

I found the solution, just opened a pull request #6

[ZenithElevate]

While we are at it, can this package be strong name signed as well, for the next release?

[ZenithElevate]

Pulled the code and applied the change, and now I get "System.Reflection.AmbiguousMatchException: 'Ambiguous match found for [System.Guid] Ctor".

[carlosxjose]

Can yo share a sample please?

[ZenithElevate]

I went to update the sample above, ran it, and got this:

This needs to be sorted out before I can add the real-world example.

[ZenithElevate]

Add this property to the Model class in the example above:

        public Guid[] guids { get; set; }

The line 2052 in the AggregateBindingListView.cs will throw.

[carlosxjose]

Try this

public Guid[] guids { get; set; } = new [];

[ZenithElevate]

The model is provided to me. I cannot change it.

[carlosxjose]

Create a new object model as a DTO then copy to it, with this new logic.

[ZenithElevate]

This is not something that can be done at large.

[ZenithElevate]

Just to get past the error, I tried your suggestion, but this time I got this:

I incrementally implemented IComparable<Model>, then IComparable, and finally, IEquatable, but no dice. The test now has the following code:

using Equin.ApplicationFramework;
using System.ComponentModel;

namespace BindingListViewTest
{
    internal interface IModelView
    {
        [DisplayName("Id")]
        public string IdString { get; }
        public string Name { get; set; }
        public string Description { get; set; }

        int CompareTo(Model other);
        int CompareTo(object other);
        bool Equals(Model other);
    }

    internal class Model : IModelView, IComparable<Model>, IComparable, IEquatable<Model>
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public string Description { get; set; }
        public string Type { get; set; }

        public string IdString => Id.ToString();
        public Guid[] guids { get; set; } = Array.Empty<Guid>();

        public int CompareTo(Model other) => Id.CompareTo(other.Id);

        public int CompareTo(object other)
        {
            if(other is Model model)
            {
                return Id.CompareTo(model.Id);
            }

            return 0;
        }

        public bool Equals(Model other) => Id == other.Id;
    }

    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();

            var items = new List<Model>() {
                new() { Id = 0, Name = "0" },
                new() { Id = 1, Name = "1" },
                new() { Id = 2, Name = "2" },
                new() { Id = 3, Name = "3" },
            };

            var source = new BindingListView<IModelView>(items);
            var grid = new DataGridView() { DataSource = source, Dock = DockStyle.Fill };
            Controls.Add(grid);
            source.ApplySort("Name");
        }
    }
}