Entity Framework MVP Pattern problem

That's what I meant.

class MyForm : IMyView
{
        MyPresenter _presenter;
        
        public MyForm()
        {
                _presenter = new MyPresenter(this, new MyService());
                
                dataGridView.Event += DataGridView_EventHandler;
        }
        
        public MyModel Model { get; private set; }
        
        public void Update()
        {
                // Update the model or create a new one
        }
        
        void DataGridView_EventHandler(object sender, EventArgs e)
        {
                Update();
        }
}

class MyPresenter
{
        public MyPresenter(IMyView view, IService serivice)
        {
        }
}

interface IMyView
{
        void Update();
        
        MyModel Model { get; }
}

This is just a concept, nothing more, there are many ways to handle input and output, it depends on the scenario.

You can also do something like this.

class MyForm : IMyView
{
        MyPresenter _presenter;
        
        public MyForm()
        {
                _presenter = new MyPresenter(this, new MyService());
                
                dataGridView.Event += DataGridView_EventHandler;
        }
        
        public string Details { get; private set; }
        
        void DataGridView_EventHandler(object sender, EventArgs e)
        {
                Details = /* Set the details property */
        }
}

class MyPresenter
{
        public MyPresenter(IMyView view, IService serivice)
        {
        }
}

interface IMyView
{
        string Details { get; }
}

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Regards, Eyal Shilony