In MVC Core 6 How to pass list of object and other data to api controller

Question

I posted question on below link please help me.

https://stackoverflow.com/questions/74726930/in-asp-net-core-6-mvc-passing-list-of-object-to-controller-with-model-object

Answer 1

Hi @mohammad moin ,

My api controller looks like this:

public async Task<IActionResult> SaveData([FromBody] DataModel postedModel)  

   {  
   }   

but I am getting null in the api controller.

Do you mean the postedModel is null? If that is the case, the issue might relate the CreatedDate value, it might not a valid date. Try to use F12 developer tool and set break point to check it, and you can also try to set the value via new Date(). Or you can change the property to a string type and send a string value to the backend.

If you mean the postedModel.ViewModel is null, the issue might relate the form's input elements' name.

According to your code, I create a sample using the following code, the data transfers success:

1. Add a AddData action and transfer a list of ViewModel to the view page:
   public IActionResult AddData()
   {
   var itemlist = new List<ViewModel>()
   {
   new ViewModel (){ Id=101, Name="Test A", Address="address a"},
   new ViewModel (){ Id=102, Name="Test B", Address="address B"},
   };
   return View(itemlist);
   }
2. The AddData.cshtml page: you can compare it with yours. Then, use the following code to get the form data, and transfer to the controller:
3. The ApiController as below:

   public class ApiController : Controller  
   {   
       [HttpPost]  
       public async Task<IActionResult> SaveData([FromBody] DataModel postedModel)  
       {  
           return Ok(postedModel);  
       }  
   }  
   

   After that, the result as below:

If use F12 developer tools to check the request body, the json data as below:

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Best regards,
Dillion