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I'm trying to model bind a set of dynamically generated checkboxes so as to process them in the controller action but can't get the model binding to occur. This is the scenario: My ViewModel class (DocumentAddEditModel) contains a dictionary (Dictionary<string,bool>) with the string of each entry being the name/label for each checkbox and the boolean indicating whether the checkbox is checked: public class DocumentAddEditModel { ... private Dictionary<string, bool> _categoryCheckboxes = new Dictionary<string,bool>(); ... ... public Dictionary<string, bool> CategoryCheckboxes { get { return _categoryCheckboxes; } set { _categoryCheckboxes = value; } } ... } } Within my controller the action that handles the GET request for the form populates the dictonary as follows: public class DocumentsController : Controller { [RequiresAuthentication] [AcceptVerbs(HttpVerbs.Get)] public ActionResult Add() { DocumentAddEditModel documentAddEditModel = new DocumentAddEditModel(); ... Dictionary<string, bool> categoryCheckboxes = new Dictionary<string, bool>(); ... string[] categories = Enum.GetNames(typeof(Category)); foreach (string category in categories) categoryCheckboxes.Add(category, false); documentAddEditModel.CategoryCheckboxes = categoryCheckboxes; return View(documentAddEditModel); } } Within the view i have the following to generate the checkboxes: <% foreach (KeyValuePair<string, bool> categoryCheckbox in ViewData.Model.CategoryCheckboxes) {%> <input class="checkbox" type="checkbox" name="CategoryCheckboxes[0].Key" id="<%= categoryCheckbox.Key %>" /> <label class="categoryLabel" for="<%= categoryCheckbox.K

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