c# - MVC Post with complex types, model is empty -

i have following code fill model before posting controller. list i'm iterating through list.

<div class="tab-content">             @*@foreach (var description in model.category.c_categorydescription)*@             @for (var = 0; < model.category.c_categorydescription.count; i++)             {                 <div id="@("tab" + @model.category.c_categorydescription.tolist()[i].producttypeid)" class="@(model.category.c_categorydescription.tolist()[i] == @model.category.c_categorydescription.first() ? "tab-active" : "tab")">                     <div class="form-group ">                         @html.labelfor(model => model.category.c_categorydescription.tolist()[i].descriptiontop, "beskrivelse - top", htmlattributes: new {@class = "control-label col-md-2"})                         <div class="col-md-10">                             @html.textareafor(model => model.category.c_categorydescription.tolist()[i].descriptiontop, new {@class = "richtext"})                         </div>                     </div>                      <div class="form-group">                         @html.labelfor(model => model.category.c_categorydescription.tolist()[i].descriptionbottom, "beskrivelse - bund", htmlattributes: new {@class = "control-label col-md-2"})                         <div class="col-md-10">                             @html.textareafor(model => model.category.c_categorydescription.tolist()[i].descriptionbottom, new {@class = "richtext"})                         </div>                     </div>                 </div>             }         </div> 

the html comes out fine. catch post in controller, model empty. not null, empty. read numerous articles saying points problem model binding.

i changed code reflect what's described: here

still no dice. appreciated.

edit: changed code according this post.

my view looks this:

<div class="tab-content">             @html.partial("_edit", model.category.c_categorydescription.tolist())         </div> 

with partial view looking this:

    @model ilist<dataaccess.plusbog.c_categorydescription>  @{     var producttype = model; }  @for (var = 0; < producttype.count; i++) {     <div id="@("tab" + @model[i].producttypeid)" class="@(model[i] == @model.first() ? "tab-active" : "tab")">         <div class="form-group ">             @html.labelfor(model => producttype[i].descriptiontop, "beskrivelse - top", htmlattributes: new { @class = "control-label col-md-2" })             <div class="col-md-10">                 @html.textareafor(model => producttype[i].descriptiontop, new { @class = "richtext" })             </div>         </div>          <div class="form-group">             @html.labelfor(model => producttype[i].descriptionbottom, "beskrivelse - bund", htmlattributes: new { @class = "control-label col-md-2" })             <div class="col-md-10">                 @html.textareafor(model => producttype[i].descriptionbottom, new { @class = "richtext" })             </div>         </div>     </div> } 

same result, sadly.

edit:

here's models:

public class categorymodel {     public c_category category { get; set; }     public selectlist categories { get; set; }     public selectlist producttypes { get; set; }     public string isbnlisttoaddmanually { get; set; }     public string response { get; set; } } 

and c_category class:

public partial class c_category {     public c_category()     {         this.c_categorydescription = new hashset<c_categorydescription>();         this.books = new hashset<books>();         this.childcategories = new hashset<c_category>();         this.campaign = new hashset<campaign>();         this.group = new hashset<group>();     }      public int id { get; set; }     public nullable<int> parentcategoryid { get; set; }     public string name { get; set; }     public bool active { get; set; }     public string slug { get; set; }     public string keywords { get; set; }      public virtual icollection<c_categorydescription> c_categorydescription { get; set; }     public virtual icollection<books> books { get; set; }     public virtual icollection<c_category> childcategories { get; set; }     public virtual c_category parentcategory { get; set; }     public virtual icollection<campaign> campaign { get; set; }     public virtual icollection<group> group { get; set; } } 

and lastly, c_categorydescription:

public partial class c_categorydescription {     public int categoryid { get; set; }     public int producttypeid { get; set; }     public string descriptiontop { get; set; }     public string descriptionbottom { get; set; }     public string metadescription { get; set; }     public string metakeywords { get; set; }     public string alternativetitle { get; set; }      public virtual c_category c_category { get; set; }     public virtual c_producttype c_producttype { get; set; } } 

your code generating elements in collection needs be

@html.textareafor(m => m.category.c_categorydescription[i].descriptiontop, new {@class = "richtext"}) 

which generate correct name attributes

<textarea name="category.c_categorydescription[0].descriptionto" ... /> <textarea name="category.c_categorydescription[1].descriptionto" ... /> 

your current use .tolist() generating incorrect name attributes (not tested, assume name="[0].descriptionto")

alternatively can use custom editortemplate c_categorydescription model if cannot change collection implement ilist

in views/shared/editortemplates/c_categorydescription.cshtml (note name of file must match name of class)

@model yourassembly.c_categorydescription  <div class="form-group ">     @html.labelfor(m => m.descriptiontop, "beskrivelse - top", new { @class = "control-label col-md-2" })     <div class="col-md-10">         @html.textareafor(m => m.descriptiontop, new { @class = "richtext" })     <div> </div> .... 

and in main view, generate correct html each item in collection

@html.editorfor(m => m.category.c_categorydescription)