create controller that returns viewmodel in csharp

To create a controller that returns a viewmodel in C#, you can follow these steps:

1. Create a new class for your viewmodel. This class should contain all the data that you want to pass to the view.

main.cs
public class MyViewModel
{
    public string Property1 { get; set; }
    public int Property2 { get; set; }
}
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2. Create a new controller that inherits from the Controller class.

main.cs
public class MyController : Controller
{
    public IActionResult Index()
    {
        var viewModel = new MyViewModel
        {
            Property1 = "Hello, World!",
            Property2 = 42
        };

        return View(viewModel);
    }
}
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3. In the Index action of your controller, create an instance of your viewmodel and populate it with the required data.
4. Pass the viewmodel to the View method, which returns a view that is bound to your viewmodel.

main.cs
@model MyNamespace.MyViewModel

<h1>@Model.Property1</h1>
<p>@Model.Property2</p>
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5. In your view, specify the type of your viewmodel using the @model directive, and access the data using the properties of your viewmodel.