Problem passing a record size from Ajax to Controller in Asp net core 5 mvc

Question

Hello friends, I have a problem when passing information from Ajax to the controller, for example I am passing 126 records and if it arrives to the controller, but if I add one more product it arrives null, I am using asp net core 5, I would appreciate your help.

In this two first image if the information comes to me well

When an item is added more I get null

Answer 1

Hi @PEDRO FERNANDO OSTAIZA GARCIA ,

Can you directly share the relates code (such as the JS scripts, the Ventas and DetallesViewModel), instead of using the image? If you can't directly post them, you can create a txt file and share it via the attachment. Then, we can based on your code to reproduce the problem and help you fix the problem.

Besides, I also create a sample on my side and use JQuery Ajax to transfer lots of data to the action method, it works well. So, the issue might not relate the count. You can check this screenshot:

You can view the source code from here: 176700-sourcecode.txt

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Best regards,
Dillion

Answer 2

There isn't an array size limit in MVC (but there is a request size limit). However your model looks incorrect to me. This is a post so I assume you're passing your data in the body of the request. In the body of the request you would normally have a single model, not multiple. Hence I would expect your controller to accept a single model and within that model you'd have child properties for ventas and detaile.

public class MyModel
{
   public VentasViewModel Ventas { get; set; }
   public List<DetailesViewModel> Detailes { get; set; }
}

[HttpPost]
public IActionResult Guardarventas ( MyModel model )
{
}

Also look at the actual body that was sent in the request and make sure the JSON lines up when you get to the 127th item.