POST a form array without successful
You need to generate the controls for the collection in a for
loop so they are correctly named with indexers (note that property BatchProducts
needs to be IList<BatchProductViewModel>
@using (Html.BeginForm("Save", "ConnectBatchProduct", FormMethod.Post))
{
....
<table>
....
@for(int i = 0; i < Model.BatchProducts.Count; i++)
{
<tr>
<td>@Html.TextBoxFor(m => m.BatchProducts[i].Quantity)</td>
<td>@Html.TextBoxFor(m => m.BatchProducts[i].BatchName)</td>
<td>
// add the following to allow for dynamically deleting items in the view
<input type="hidden" name="BatchProducts.Index" value="@i" />
<a class="deleteRow"></a>
</td>
</tr>
}
....
</table>
....
}
Then the POST method needs to be
public ActionResult Save(ConnectBatchProductViewModel model)
{
....
}
Edit
Note: Further to your edit, if you want to dynamically add and remove BatchProductViewModel
items in he view, you will need to use the BeginCollectionItem
helper or a html template as discussed in this answer
The template to dynamically add new items would be
<div id="NewBatchProduct" style="display:none">
<tr>
<td><input type="text" name="BatchProducts[#].Quantity" value /></td>
<td><input type="text" name="BatchProducts[#].BatchName" value /></td>
<td>
<input type="hidden" name="BatchProducts.Index" value ="%"/>
<a class="deleteRow"></a>
</td>
</tr>
</div>
Note the dummy indexers and the non-matching value for the hidden input prevents this template posting back.
Then the script to add a new BatchProducts
would be
$("#addrow").click(function() {
var index = (new Date()).getTime(); // unique indexer
var clone = $('#NewBatchProduct').clone(); // clone the BatchProducts item
// Update the index of the clone
clone.html($(clone).html().replace(/\[#\]/g, '[' + index + ']'));
clone.html($(clone).html().replace(/"%"/g, '"' + index + '"'));
$("table.order-list").append(clone.html());
});