Multi-level dynamic collections | C# Online Compiler

Multi-level dynamic collections by Stephen Muecke

using System;
using System.ComponentModel.DataAnnotations;
using System.Collections.Generic;

namespace HelloWorldMvcApp
{
	public class ViewModel
	{
		public List<Project> Projects { get; set; }
	}
	public class Project
	{
		public string Name { get; set; }
		public List<ProjectStage> Stages { get; set; }
		
	}
	public class ProjectStage
	{
		public string Name { get; set; }
		public List<Resource> Resources { get; set; }
	}
	public class Resource
	{
		[Required(ErrorMessage = "Please add the role")]
		public string Role { get; set; }
		[Required(ErrorMessage = "Please add the name")]
		public string Name { get; set; }
	}

}

Model

​x
 
using System;
using System.ComponentModel.DataAnnotations;
using System.Collections.Generic;
​
namespace HelloWorldMvcApp
{
    public class ViewModel
    {
        public List<Project> Projects { get; set; }
    }
    public class Project
    {
        public string Name { get; set; }
        public List<ProjectStage> Stages { get; set; }
        
    }
    public class ProjectStage
    {
        public string Name { get; set; }
        public List<Resource> Resources { get; set; }
    }
    public class Resource
    {
        [Required(ErrorMessage = "Please add the role")]
        public string Role { get; set; }
        [Required(ErrorMessage = "Please add the name")]
        public string Name { get; set; }
    }
​
}

@model HelloWorldMvcApp.ViewModel
@{
	Layout = null;
}

<!DOCTYPE html>
<!-- template from http://getbootstrap.com/getting-started -->

<html lang="en">
	<head>
		<meta charset="utf-8">
		<meta http-equiv="X-UA-Compatible" content="IE=edge">
		<meta name="viewport" content="width=device-width, initial-scale=1">
		<title>Bootstrap 101 Template</title>

		<!-- CSS Includes -->
		<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
		
		<style type="text/css">

			.field-validation-error {
				color: #ff0000;
			}
			
			.indent {
				margin-left: 25px;
			}
			.template {
				display: none;
			}
			h1 {
				font-size: 24px;
				margin: 10px 0;
			}
			h2 {
				font-size: 18px;
				margin: 5px 0;
			}
			h3 {
				font-size: 14px;
				margin: 2px 0;
				font-weight: bold;
			}
			label {
				margin-bottom: 2px;
				font-weight: normal;
			}
			.form-control {
				padding: 2px 5px;
				height: 24px;
			}
			.form-group {
				margin-bottom: 5px;
			}
			hr {
				margin: 10px 0;
			}

		</style>
	</head>
	
	<body>
		<div class="container">
			<div class="col-md-6 col-md-offset-3">
				@using (Html.BeginForm())
				{
					<div id="projects">
						<h1>Projects</h1>
						<a href="javascript:void(0)" id="addproject">Add project</a>
						@for(int i = 0; i < Model.Projects.Count; i++)
						{
							<div class="project">
								<div class="form-group">
									@Html.LabelFor(m => m.Projects[i].Name)
									@Html.TextBoxFor(m => m.Projects[i].Name, new { @class="form-control" }) 
									@Html.ValidationMessageFor(m => m.Projects[i].Name)
								</div>
								<input type="hidden" class="projectindex" name="Projects.Index" value="@i" />
								<div class="indent stages">
									<h2>Stages</h2>
									<a href="javascript:void(0)" class="addstage">Add stage</a>
									@for(int j = 0; j < Model.Projects[i].Stages.Count; j++)
									{
										<div class="stage">
											<div class="form-group">
												@Html.LabelFor(m => m.Projects[i].Stages[j].Name)
												@Html.TextBoxFor(m => m.Projects[i].Stages[j].Name, new {@class="form-control"}) 
												@Html.ValidationMessageFor(m => m.Projects[i].Stages[j].Name)
											</div>
											<input type="hidden" class="stageindex" name="Projects[@i].Stages.Index" value="@j" />
											<div class="indent resources">
												<h3>Resources</h3>
												<a href="javascript:void(0)" class="addresource">Add resource</a>
												@for(int k = 0; k < Model.Projects[i].Stages[j].Resources.Count; k++)
												{
													<div class="resource">
														<div class="form-group">
															@Html.LabelFor(m => m.Projects[i].Stages[j].Resources[k].Role)
															@Html.TextBoxFor(m => m.Projects[i].Stages[j].Resources[k].Role, new {@class="form-control"}) 
															@Html.ValidationMessageFor(m => m.Projects[i].Stages[j].Resources[k].Role)
														</div>
														<div class="form-group">
															@Html.LabelFor(m => m.Projects[i].Stages[j].Resources[k].Name)
															@Html.TextBoxFor(m => m.Projects[i].Stages[j].Resources[k].Name, new {@class="form-control"}) 
															@Html.ValidationMessageFor(m => m.Projects[i].Stages[j].Resources[k].Name)
														</div>
														<input type="hidden" class="resourceindex" name="Projects[@i].Stages[@j].Resources.Index" value="@j" />
														<hr/>
													</div>
												}
											</div>
										</div>
									}
								</div>
							</div>
						}
					</div>
					<button type="submit" class="btn btn-success submit">Save</button>
				}

			</div>
		</div>
		
		<div id="newproject" class="template">
			<div class="project">
				<div class="form-group">
					<label for="Projects_#__Name">Name</label>
					<input class="form-control" id="Projects_#__Name" name="Projects[#].Name" type="text" value=""> 
					<span class="field-validation-valid" data-valmsg-for="Projects[#].Name" data-valmsg-replace="true"></span>
				</div>
				<input type="hidden" class="projectindex" name="Projects.Index" value="#">
				<div class="indent stages">
					<h2>Stages</h2>
					<a href="javascript:void(0)" class="addstage">Add stage</a>
				</div>
			</div>
		</div>
		
		<div id="newstage" class="template">
			<div class="form-group">
				<label for="Projects_#__Stages_%__Name">Name</label>
				<input class="form-control" id="Projects_#__Stages_%__Name" name="Projects[#].Stages[%].Name" type="text" value=""> 
				<span class="field-validation-valid" data-valmsg-for="Projects[#].Stages[%].Name" data-valmsg-replace="true"></span>
			</div>
			<input type="hidden" class="stageindex" name="Projects[#].Stages.Index" value="%">
			<div class="indent resources">
				<h3>Resources</h3>
				<a href="javascript:void(0)" class="addresource">Add resource</a>
				<div class="resource"></div>
			</div>		
		</div>
		
		<div id="newresource" class="template">
			<div class="form-group">
				<label for="Projects_#__Stages_%__Resources_~__Role">Role</label>
				<input class="form-control" data-val="true" data-val-required="Please add the role" id="Projects_#__Stages_%__Resources_~__Role" name="Projects[#].Stages[0].Resources[~].Role" type="text" value="">
				<span class="field-validation-valid" data-valmsg-for="Projects[0].Stages[%].Resources[~].Role" data-valmsg-replace="true"></span>
			</div>
			<div class="form-group">
				<label for="Projects_#__Stages_%__Resources_~__Name">Name</label>
				<input class="form-control" data-val="true" data-val-required="Please add the name" id="Projects_#__Stages_%__Resources_~__Name" name="Projects[#].Stages[0].Resources[~].Name" type="text" value="">
				<span class="field-validation-valid" data-valmsg-for="Projects[#].Stages[%].Resources[~].Name" data-valmsg-replace="true"></span>
			</div>
			<input type="hidden" class="resourceindex" name="Projects[#].Stages[%].Resources.Index" value="~">
			<hr/>
		</div>
		
		

		<!-- JS includes -->
		<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
		<script src="//netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>
	
		<script src="//ajax.aspnetcdn.com/ajax/jquery.validate/1.11.1/jquery.validate.min.js"></script>
		<script src="//ajax.aspnetcdn.com/ajax/mvc/4.0/jquery.validate.unobtrusive.min.js"></script>
		
		<script type="text/javascript">
			var form = $('form');
			var project = $('#newproject');
			var stage = $('#newstage');
			var resource = $('#newresource');
		
			form.on('click', '.addresource', function() {
				var clone = resource.clone();
				var projectIndex = $(this).closest('.project').find('.projectindex').val();
				clone.html($(clone).html().replace(/#/g, projectIndex));
				var stageIndex = $(this).closest('.stage').find('.stageindex').val();
				clone.html($(clone).html().replace(/%/g, stageIndex));
				var resourceIndex = new Date().getTime();
				clone.html($(clone).html().replace(/~/g, resourceIndex));
				$(this).closest('.resources').append(clone.html());
				form.data('validator', null);
				$.validator.unobtrusive.parse(form);
			});
				

			form.on('click', '.addstage', function() {
				var clone = stage.clone();
				var projectIndex = $(this).closest('.project').find('.projectindex').val();
				clone.html($(clone).html().replace(/#/g, projectIndex));
				var stageIndex = new Date().getTime();
				clone.html($(clone).html().replace(/%/g, stageIndex));			
				$(this).closest('.stages').append(clone.html());
				form.data('validator', null);
				$.validator.unobtrusive.parse(form);
			});
			
			$('#addproject').click(function() {
				var clone = project.clone();
				var projectIndex = new Date().getTime();
				clone.html($(clone).html().replace(/#/g, projectIndex));
				$('#projects').append(clone.html());
				form.data('validator', null);
				$.validator.unobtrusive.parse(form);
			});
			
		</script>
	</body>
</html>

View

 
@model HelloWorldMvcApp.ViewModel
@{
    Layout = null;
}
​
<!DOCTYPE html>
<!-- template from http://getbootstrap.com/getting-started -->
​
<html lang="en">
    <head>
        <meta charset="utf-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <title>Bootstrap 101 Template</title>
​
        <!-- CSS Includes -->
        <link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
        
        <style type="text/css">
​
            .field-validation-error {
                color: #ff0000;
            }
            
            .indent {
                margin-left: 25px;
            }
            .template {
                display: none;
            }
            h1 {
                font-size: 24px;
                margin: 10px 0;
            }
            h2 {
                font-size: 18px;
                margin: 5px 0;
            }
            h3 {
                font-size: 14px;
                margin: 2px 0;
                font-weight: bold;
            }
            label {
                margin-bottom: 2px;
                font-weight: normal;
            }
            .form-control {
                padding: 2px 5px;
                height: 24px;
            }
            .form-group {
                margin-bottom: 5px;
            }
            hr {
                margin: 10px 0;
            }
​
        </style>
    </head>
    
    <body>
        <div class="container">
            <div class="col-md-6 col-md-offset-3">
                @using (Html.BeginForm())
                {
                    <div id="projects">
                        <h1>Projects</h1>
                        <a href="javascript:void(0)" id="addproject">Add project</a>
                        @for(int i = 0; i < Model.Projects.Count; i++)
                        {
                            <div class="project">
                                <div class="form-group">
                                    @Html.LabelFor(m => m.Projects[i].Name)
                                    @Html.TextBoxFor(m => m.Projects[i].Name, new { @class="form-control" }) 
                                    @Html.ValidationMessageFor(m => m.Projects[i].Name)
                                </div>
                                <input type="hidden" class="projectindex" name="Projects.Index" value="@i" />
                                <div class="indent stages">
                                    <h2>Stages</h2>
                                    <a href="javascript:void(0)" class="addstage">Add stage</a>
                                    @for(int j = 0; j < Model.Projects[i].Stages.Count; j++)
                                    {
                                        <div class="stage">
                                            <div class="form-group">
                                                @Html.LabelFor(m => m.Projects[i].Stages[j].Name)
                                                @Html.TextBoxFor(m => m.Projects[i].Stages[j].Name, new {@class="form-control"}) 
                                                @Html.ValidationMessageFor(m => m.Projects[i].Stages[j].Name)
                                            </div>
                                            <input type="hidden" class="stageindex" name="Projects[@i].Stages.Index" value="@j" />
                                            <div class="indent resources">
                                                <h3>Resources</h3>
                                                <a href="javascript:void(0)" class="addresource">Add resource</a>
                                                @for(int k = 0; k < Model.Projects[i].Stages[j].Resources.Count; k++)
                                                {
                                                    <div class="resource">
                                                        <div class="form-group">
                                                            @Html.LabelFor(m => m.Projects[i].Stages[j].Resources[k].Role)
                                                            @Html.TextBoxFor(m => m.Projects[i].Stages[j].Resources[k].Role, new {@class="form-control"}) 
                                                            @Html.ValidationMessageFor(m => m.Projects[i].Stages[j].Resources[k].Role)
                                                        </div>
                                                        <div class="form-group">
                                                            @Html.LabelFor(m => m.Projects[i].Stages[j].Resources[k].Name)
                                                            @Html.TextBoxFor(m => m.Projects[i].Stages[j].Resources[k].Name, new {@class="form-control"}) 
                                                            @Html.ValidationMessageFor(m => m.Projects[i].Stages[j].Resources[k].Name)
                                                        </div>
                                                        <input type="hidden" class="resourceindex" name="Projects[@i].Stages[@j].Resources.Index" value="@j" />
                                                        <hr/>
                                                    </div>
                                                }
                                            </div>
                                        </div>
                                    }
                                </div>
                            </div>
                        }
                    </div>
                    <button type="submit" class="btn btn-success submit">Save</button>
                }
​
            </div>
        </div>
        
        <div id="newproject" class="template">
            <div class="project">
                <div class="form-group">
                    <label for="Projects_#__Name">Name</label>
                    <input class="form-control" id="Projects_#__Name" name="Projects[#].Name" type="text" value=""> 
                    <span class="field-validation-valid" data-valmsg-for="Projects[#].Name" data-valmsg-replace="true"></span>
                </div>
                <input type="hidden" class="projectindex" name="Projects.Index" value="#">
                <div class="indent stages">
                    <h2>Stages</h2>
                    <a href="javascript:void(0)" class="addstage">Add stage</a>
                </div>
            </div>
        </div>
        
        <div id="newstage" class="template">
            <div class="form-group">
                <label for="Projects_#__Stages_%__Name">Name</label>
                <input class="form-control" id="Projects_#__Stages_%__Name" name="Projects[#].Stages[%].Name" type="text" value=""> 
                <span class="field-validation-valid" data-valmsg-for="Projects[#].Stages[%].Name" data-valmsg-replace="true"></span>
            </div>
            <input type="hidden" class="stageindex" name="Projects[#].Stages.Index" value="%">
            <div class="indent resources">
                <h3>Resources</h3>
                <a href="javascript:void(0)" class="addresource">Add resource</a>
                <div class="resource"></div>
            </div>      
        </div>
        
        <div id="newresource" class="template">
            <div class="form-group">
                <label for="Projects_#__Stages_%__Resources_~__Role">Role</label>
                <input class="form-control" data-val="true" data-val-required="Please add the role" id="Projects_#__Stages_%__Resources_~__Role" name="Projects[#].Stages[0].Resources[~].Role" type="text" value="">
                <span class="field-validation-valid" data-valmsg-for="Projects[0].Stages[%].Resources[~].Role" data-valmsg-replace="true"></span>
            </div>
            <div class="form-group">
                <label for="Projects_#__Stages_%__Resources_~__Name">Name</label>
                <input class="form-control" data-val="true" data-val-required="Please add the name" id="Projects_#__Stages_%__Resources_~__Name" name="Projects[#].Stages[0].Resources[~].Name" type="text" value="">
                <span class="field-validation-valid" data-valmsg-for="Projects[#].Stages[%].Resources[~].Name" data-valmsg-replace="true"></span>
            </div>
            <input type="hidden" class="resourceindex" name="Projects[#].Stages[%].Resources.Index" value="~">
            <hr/>
        </div>
        
        
​
        <!-- JS includes -->
        <script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
        <script src="//netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>
    
        <script src="//ajax.aspnetcdn.com/ajax/jquery.validate/1.11.1/jquery.validate.min.js"></script>
        <script src="//ajax.aspnetcdn.com/ajax/mvc/4.0/jquery.validate.unobtrusive.min.js"></script>
        
        <script type="text/javascript">
            var form = $('form');
            var project = $('#newproject');
            var stage = $('#newstage');
            var resource = $('#newresource');
        
            form.on('click', '.addresource', function() {
                var clone = resource.clone();
                var projectIndex = $(this).closest('.project').find('.projectindex').val();
                clone.html($(clone).html().replace(/#/g, projectIndex));
                var stageIndex = $(this).closest('.stage').find('.stageindex').val();
                clone.html($(clone).html().replace(/%/g, stageIndex));
                var resourceIndex = new Date().getTime();
                clone.html($(clone).html().replace(/~/g, resourceIndex));
                $(this).closest('.resources').append(clone.html());
                form.data('validator', null);
                $.validator.unobtrusive.parse(form);
            });
                
​
            form.on('click', '.addstage', function() {
                var clone = stage.clone();
                var projectIndex = $(this).closest('.project').find('.projectindex').val();
                clone.html($(clone).html().replace(/#/g, projectIndex));
                var stageIndex = new Date().getTime();
                clone.html($(clone).html().replace(/%/g, stageIndex));          
                $(this).closest('.stages').append(clone.html());
                form.data('validator', null);
                $.validator.unobtrusive.parse(form);
            });
            
            $('#addproject').click(function() {
                var clone = project.clone();
                var projectIndex = new Date().getTime();
                clone.html($(clone).html().replace(/#/g, projectIndex));
                $('#projects').append(clone.html());
                form.data('validator', null);
                $.validator.unobtrusive.parse(form);
            });
            
        </script>
    </body>
</html>
​

using System;
using System.Web.Mvc;
using System.Collections.Generic;

namespace HelloWorldMvcApp
{
	public class HomeController : Controller
	{
		[HttpGet]
		public ActionResult Index()
		{
			// Start with some dummy data
			ViewModel model = new ViewModel
			{
				Projects = new List<Project>
				{
					new Project()
					{
						Name = "Project 1",
						Stages = new List<ProjectStage>
						{
							new ProjectStage()
							{
								Name = "Design",
								Resources = new List<Resource>
								{
									new Resource()
									{
										Role = "Director",
										Name = "Bob"
									}
								}
							}
						}
					}
				}
			};
			return View(model);
		}


		[HttpPost]
		public ActionResult Index(ViewModel model)
		{				
			return View(model);
		}
	}
}

Controller

 
using System;
using System.Web.Mvc;
using System.Collections.Generic;
​
namespace HelloWorldMvcApp
{
    public class HomeController : Controller
    {
        [HttpGet]
        public ActionResult Index()
        {
            // Start with some dummy data
            ViewModel model = new ViewModel
            {
                Projects = new List<Project>
                {
                    new Project()
                    {
                        Name = "Project 1",
                        Stages = new List<ProjectStage>
                        {
                            new ProjectStage()
                            {
                                Name = "Design",
                                Resources = new List<Resource>
                                {
                                    new Resource()
                                    {
                                        Role = "Director",
                                        Name = "Bob"
                                    }
                                }
                            }
                        }
                    }
                }
            };
            return View(model);
        }
​
​
        [HttpPost]
        public ActionResult Index(ViewModel model)
        {               
            return View(model);
        }
    }
}

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