Updated partial view model values in contoller after form submit

Question

In my sample MVC application I have a model

class SampleModel
{
    public int Id { get; set; }
    public string Name { get; set; }
    public List<Certification> Certifications { get; set; }
}

class Certification
{
    public int Id { get; set; }
    public string CertificationName { get; set; }
    public int DurationInMonths { get; set; }
}

My View (I need the certification details to be shown in a partial view)

@model SampleApplication.Model.SampleModel
<!-- other code... -->
@using (Html.BeginForm("SaveValues","Sample", FormMethod.Post, new { id= "saveForm" }))
{
    @Html.HiddenFor(m => m.Id, new { id = "hdnID" }) 
    @Html.TextBoxFor(m => m.Name, new { id = "txtName" })
    @{Html.RenderPartial("_CertDetails.cshtml", Model.Certifications);}
    <input type="submit" id="btnSubmit" name="btnSubmit" value="Update"  />
}

Partial View

@model List<SampleApplication.Model.Certification>
<!-- other code... -->
@if (@Model != null)
{
    for (int i = 0; i < @Model.Count; i++)
    {
        @Html.HiddenFor(m => m[i].Id , new { id = "CId" + i.ToString() })
        @Html.TextBoxFor(m => m[i].CertificationName,new{ id ="CName" + i.ToString() })
        @Html.TextBoxFor(m => m[i].DurationInMonths,new{ id ="CDur" + i.ToString() })
    }
}

Controller

[HttpPost]
public ActionResult SaveValues(SampleModel sm)
{
    //Here i am not getting the updated Certification details (in sm)
}

How I get the updated values of partial view in my controller after the form post? I am able to get the updated certification values when I am not using partialview. Is this the right way or should I follow some other methods?

Answer 1

Oh Nooo... It was my mistake :( . I gave Certification List as my partialview model

 @model List<SampleApplication.Model.Certification>

But I should use the same model(Main page model) in the partial view also.

 @model SampleApp.Models.SampleModel  

In the partial view the coding will be like

        @for (int i = 0; i < @Model.Certifications.Count; i++)
        {
            @Html.HiddenFor(m => m.Certifications[i].Id, new { id = "CId" + i.ToString() })
            @Html.TextBoxFor(m => m.Certifications[i].CertificationName, new { id = "CName" + i.ToString() })
            @Html.TextBoxFor(m => m.Certifications[i].DurationInMonths, new { id = "CDur" + i.ToString() })<br /><br />
        }

Now i am getting the updated values in my controller.

Thanks @Chris Pratt for the hint.