I have a surfacecontroller that has a method receiving a post that takes a FormCollection as a parameter.

The form is defined using a BeginUmbracoForm construct. with 5 or 6 fields. Eventually, this controller's post method will receive different models and basically record/email the information provided (hence the desire for a dynamic or a FormCollection as the parameter).

During the post, I receive this error:

InvalidOperationException: The 'Microsoft.AspNetCore.Mvc.ModelBinding.Binders.FormCollectionModelBinder' cannot bind to a model of type 'Microsoft.AspNetCore.Http.FormCollection'. Change the model type to 'Microsoft.AspNetCore.Http.IFormCollection' instead.

I have tried it using a IFormCollection, with no parameters, and with a dynamic parameter. All of these yield a 400 bad request error.

Is there a way to just receive the collection of form values? I am at somewhat of a loss because I've done the same type of thing using Umbraco8 with no issues.

Here is the form:

@using (Html.BeginUmbracoForm("EMailerHandler", "UtilitiesSurface")) { @Html.AntiForgeryToken()

      <div>
          <div class="form-group">
                  <label for="ContactName">Name</label>
                  <input type="text" class="form-control" id="ContactName" name="ContactName" placeholder="">
              </div>
      </div>

      <div>
          <div class="form-group">
              <label for="EMailAddress">Email Address</label>
              <input type="text" class="form-control" id="EMailAddress" name="EMailAddress" placeholder=""> <!-- Required -->
          </div>
      </div>

      <div>
          <div class="form-group">
              <label for="CellNumber">Cell Number</label>
              <input type="text" class="form-control" id="CellNumber" name="CellNumber" placeholder="">
          </div>
      </div>

      <div>
          <div class="form-group">
              <label for="Message">Message</label>
              <textarea class="form-control" id="Message" name="Message"></textarea>
          </div>
          </div>

<button type="submit" id="submitButton" name="submitButton" class="btn btn-primary">Send</button>

}

Here is the footprint for the controller method:

public class UtilitiesSurfaceController : SurfaceController
  {

    [HttpPost]
    [ValidateAntiForgeryToken]
    public async Task<ActionResult> EMailerHandler(FormCollection form )
    {

I've tried it with/without the antiforgery token with no different in behavior.

Any ideas would be greatly appreciated;