How to persist data models passed to partial views?

Question

To illustrate the problem I face, I have put together three simple data models:

 public class PersonalModel {
     public string FirstName { get; set; }
             


        

Answer 1

Pass the OverallModel to your partials so that the controls will be correctly named for posting back to OverallModel. Currently you would have controls with name="FirstName" but they need to be name="Personal.FirstName"

@Html.Partial("Personal", Model)

and change the partials to suit

@model OverallModel
....
@Html.TextBoxFor(m => m.Personal.FirstName)

As an alternative, you can also pass the prefix to the partial

@Html.Partial("Address", Model.Personal, new ViewDataDictionary { TemplateInfo = new TemplateInfo { HtmlFieldPrefix = "Personal" }})