Passing List of Model Class From A View to A Controller in Asp.NetCore - asp.net-core-2.2

Question

i'm currently trying to post a a list of ModelClass(FileInfo) to my controller, but the submit doesn't seem to call the controller at all,even when i debug, the process does not enter my Controller Action, below is my View Code(claimdocumentform.cshtml),
#model IList<PIBSSBus.DomainModels.FileInfo>
<form method="POST" enctype="multipart/form-data">
<table class="table table-striped table-hover table-bordered" id="sample_editable_1">
<thead>
<tr>
<th> Document</th>
<th> Submitted </th>
<th> Date Submitted </th>
<th> # </th>
</tr>
</thead>
<tbody>
<tr>
<td> <input type="text" placeholder="title" asp-for="#Model[0].Title" value="enter"> </td>
<td><input type="text" placeholder="Description" asp-for="#Model[0].Description" value="enter1"> </td>
<td> </td>
<td>
<input type="file" class="" asp-for="#Model[0].File" value="Upload">
</td>
</tr>
<tr>
<td> <input type="text" placeholder="title" asp-for="#Model[1].Title" value="enter2"> </td>
<td><input type="text" placeholder="Description" asp-for="#Model[1].Description" value="enter3"> </td>
<td> </td>
<td>
<input type="file" class="" asp-for="#Model[1].File" value="Upload">
</td>
</tr>
#* #Html.AntiForgeryToken();*#
</tbody>
</table>'
<button type="submit" asp-controller="Claims" asp-action="Wazobia" class="btn green button-submit">
Submit
<i class="fa fa-check"></i>
</button>
</form>
This is my controller
public IActionResult claimdocumentform()
{
//PIBSSBus.DomainModels.FileInfo something = new PIBSSBus.DomainModels.FileInfo();
// IList<PIBSSBus.DomainModels.FileInfo> filess =new List<PIBSSBus.DomainModels.FileInfo>();
return View();
}
// [ValidateAntiForgeryToken]
[HttpPost]
public IActionResult Wazobia(IList<PIBSSBus.DomainModels.FileInfo> fam)
{
return View();
}
this is my model class
public class FileInfo
{
public string Title { get; set; }
public string Description { get; set; }
[DataType(DataType.Upload)]
public IFormFile File { get; set; }
}
The issue i am trying to pass the list of FileInfo class containing two rows to my controller action Wazobia but it doesn't call the action at all, pls help

Answer 1

I firstly tested the code in asp.net core 3.0 and it works well(You could also try this). Then I tried in asp.net core 2.2 MVC and it does not work like yours.
Then I find that it is a bug in asp.net core 2.2 and is fixed in asp.net core 3.0,refer to https://github.com/dotnet/core/issues/2523#issuecomment-481120637
A workaround is that you receive the files outside of the model
public class FileInfoVM
{
public string Title { get; set; }
public string Description { get; set; }
}
public class FileInfo
{
public string Title { get; set; }
public string Description { get; set; }
public IFormFile File { get; set; }
}
View:
<tbody>
<tr>
<td> <input type="text" placeholder="title" asp-for="#Model[0].Title" value="enter"> </td>
<td><input type="text" placeholder="Description" asp-for="#Model[0].Description" value="enter1"> </td>
<td> </td>
<td>
<input type="file" class="" name="Files">
</td>
</tr>
<tr>
<td> <input type="text" placeholder="title" asp-for="#Model[1].Title" value="enter2"> </td>
<td><input type="text" placeholder="Description" asp-for="#Model[1].Description" value="enter3"> </td>
<td> </td>
<td>
<input type="file" class="" name="Files">
</td>
</tr>
</tbody>
Action；
[ValidateAntiForgeryToken]
[HttpPost]
public IActionResult Wazobia(IList<PIBSSBus.DomainModels.FileInfoVM> fam,List<IFormFile> Files)
{
List<FileInfo> fileInfos = new List<FileInfo>();
for(int i= 0; i< Files.Count; i++)
{
fileInfos.Add(new FileInfo()
{
Title = fam[i].Title,
Description = fam[i].Description,
File = Files[i]
});
}
// save fileInfos
return View();
}