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--- title: "One-to-many relationship in the create action method" description: "One-to-many relationship in the create action method" author: "Tom Cruser" published: 2014-12-05 updated: 2014-12-06 canonical: https://www.mindstick.com/forum/12749/one-to-many-relationship-in-the-create-action-method category: "asp.net" tags: ["sql server", "relationship", "relational database"] reading_time: 3 minutes --- # One-to-many relationship in the create action method I'm currently working on a [project](https://www.mindstick.com/articles/105927/how-to-excel-at-managing-multiple-projects) that requires [add multiple](https://answers.mindstick.com/qa/115774/why-can-t-i-add-multiple-links-in-instagram-bio) addresses for one client. I have three models: here is a [link](https://www.mindstick.com/articles/23633/link-builder) to my [class diagram](https://www.mindstick.com/articles/12168/unified-modeling-language): http://sdrv.ms/1fWioA2 **Person [model](https://yourviews.mindstick.com/view/81334/america-is-reopening-after-corona-lockdown-but-on-swedish-model):** ``` public class Person{ public Person() { this.Adresses = new HashSet

(); } public int PersonID { get; set; } [Required(ErrorMessage = "Name is required")] public string Name { get; set; } [Required(ErrorMessage = "Email Address is required")] [DisplayName("Email Address")] //[RegularExpression(@"[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}", //ErrorMessage = "Email is is not valid.")] [DataType(DataType.EmailAddress)] public string Email { get; set; } public string Mobile { get; set; } public string Phone { get; set; } public string Fax { get; set; } public virtual ICollection

Adresses { get; set; }} ``` ## address: ``` public class Address{ [HiddenInput(DisplayValue = false)] public int ID { get; set; } public string Street { get; set; } public string Building { get; set; } public int PersonID { get; set; } public int CityID { get; set; } public virtual City City { get; set; } public virtual Person Person { get; set; }}I created modelview to bind to my Create view: public class PersonViewModel{ public Person Person { get; set; } public ICollection

Adresses { get; set; }} ``` My [question](https://www.mindstick.com/blog/23175/how-to-solve-neet-question-paper-in-less-time) is how to bind the [viewmodel](https://www.mindstick.com/forum/157215/what-is-viewmodel-in-mvc) to the create view in [order](https://www.mindstick.com/articles/12276/how-timely-order-deliveries-can-improve-customer-experience) to be able to save multiple addresses for the same Person? ## Replies ### Reply by Anonymous User I recommend you to use client side approach using knockout as example: Server side: ``` public class HomeController : Controller{ // // GET: /Home/ public ActionResult Index() { var model = new { person = new { firstName = "123", secondName = "" }, addresses = new dynamic[1] { new { street = "", building = "", selectedCityId = "" } }, cities = new dynamic[2] { new { cityName = "Kiev", cityId = "1" }, new { cityName = "Moskow", cityId = "2" } } }; return View(model); } public ActionResult Save(YourType model) { ..... } } ``` ## And client side: ``` @{Layout = null;}@using Newtonsoft.Json; Index

First name:

Second name:

Addresses

Street

Building

City

``` ### Reply by Anonymous User For this purpose, create an editor template in /Shared/Editor called Address.cshtml: ``` @model Address

@Html.HiddenFor(model => model.ID)@Html.HiddenFor(model => model.PersonID)@Html.HiddenFor(model => model.CityID)@Html.TextBoxFor(model => model.Street)
@Html.TextBoxFor(model => model.Building )

``` Now, in your View, all you need to do is this: @Html.EditorFor(v => v.Addresses) This will create form fields like this: ``` ``` --- Original Source: https://www.mindstick.com/forum/12749/one-to-many-relationship-in-the-create-action-method Copyright © MindStick Software Pvt. Ltd. This Markdown version is provided for developers, AI systems, and offline reading.