C# 插入具有集合属性的视图
我有一个Person类和一个Contact类。 一个人可以有很多联系人C# 插入具有集合属性的视图,c#,asp.net-mvc-5,asp.net-mvc-views,C#,Asp.net Mvc 5,Asp.net Mvc Views,我有一个Person类和一个Contact类。 一个人可以有很多联系人 public class Person { [Required] public string FirstName { get; set; } public string LastName { get; set; } public string Notes { get; set; } [Required] public List<Contact> Contact
public class Person
{
[Required]
public string FirstName { get; set; }
public string LastName { get; set; }
public string Notes { get; set; }
[Required]
public List<Contact> Contacts { get; set; }
public Person()
{
Contacts = new List<Contact>();
}
}
public class Contact
{
[Required]
public string Title { get; set; }
[Required]
public string Value { get; set; }
public Contact() { Title = ""; Value = ""; }
public Contact(string title, string value)
{
Title = title;
Value = value;
}
}
PersonCreateModel:
public class PersonController : Controller
{
public ActionResult Create()
{
return View(new PersonCreateModel());
}
// POST: /Person/Create
[HttpPost]
public ActionResult Create(string btnSubmit, PersonCreateModel personModel)
{
try
{
switch (btnSubmit)
{
case "AddContact":
personModel.Person.Contacts.Add(new Contact(personModel.NewContact_Title, personModel.NewContact_Value));
personModel.NewContact_Title = personModel.NewContact_Value = "";
return View(personModel);
case "CreatePerson"://Add To Database
//blabla
break;
}
return RedirectToAction("Index");
}
catch
{
return View(personModel);
}
}
}
public class PersonCreateModel
{
public Person Person { get; set; }
public string NewContact_Title { get; set; }
public string NewContact_Value { get; set; }
public PersonCreateModel()
{
Person = new Person();
}
}
@model MvcApplication1.Models.PersonCreateModel
@{
ViewBag.Title = "Create";
var contactsGrid = new WebGrid(Model.Person.Contacts);
}
<h2>Create</h2>
@using (Html.BeginForm())
{
@Html.ValidationSummary(true)
<fieldset>
<legend>Person</legend>
<div class="editor-label">
@Html.LabelFor(model => model.Person.FirstName)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.Person.FirstName)
@Html.ValidationMessageFor(model => model.Person.FirstName)
</div>
<div class="editor-label">
@Html.LabelFor(model => model.Person.LastName)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.Person.LastName)
@Html.ValidationMessageFor(model => model.Person.LastName)
</div>
<div class="editor-label">
@Html.LabelFor(model => model.Person.Notes)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.Person.Notes)
@Html.ValidationMessageFor(model => model.Person.Notes)
</div>
<br />
<div>
<h4>Contacts:</h4>
<table>
<tr>
<td>Title: @Html.EditorFor(model => model.NewContact_Title)</td>
<td>Value: @Html.EditorFor(model => model.NewContact_Value)</td>
<td>
<input type="submit" name="btnSubmit" value="AddContact" /></td>
</tr>
</table>
<div>
@contactsGrid.GetHtml()
</div>
</div>
<p>
<input type="submit" name="btnSubmit" value="CreatePerson" />
</p>
</fieldset>
}
<div>
@Html.ActionLink("Back to List", "Index")
</div>
@section Scripts {
@Scripts.Render("~/bundles/jqueryval")
}
查看:
public class PersonController : Controller
{
public ActionResult Create()
{
return View(new PersonCreateModel());
}
// POST: /Person/Create
[HttpPost]
public ActionResult Create(string btnSubmit, PersonCreateModel personModel)
{
try
{
switch (btnSubmit)
{
case "AddContact":
personModel.Person.Contacts.Add(new Contact(personModel.NewContact_Title, personModel.NewContact_Value));
personModel.NewContact_Title = personModel.NewContact_Value = "";
return View(personModel);
case "CreatePerson"://Add To Database
//blabla
break;
}
return RedirectToAction("Index");
}
catch
{
return View(personModel);
}
}
}
public class PersonCreateModel
{
public Person Person { get; set; }
public string NewContact_Title { get; set; }
public string NewContact_Value { get; set; }
public PersonCreateModel()
{
Person = new Person();
}
}
@model MvcApplication1.Models.PersonCreateModel
@{
ViewBag.Title = "Create";
var contactsGrid = new WebGrid(Model.Person.Contacts);
}
<h2>Create</h2>
@using (Html.BeginForm())
{
@Html.ValidationSummary(true)
<fieldset>
<legend>Person</legend>
<div class="editor-label">
@Html.LabelFor(model => model.Person.FirstName)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.Person.FirstName)
@Html.ValidationMessageFor(model => model.Person.FirstName)
</div>
<div class="editor-label">
@Html.LabelFor(model => model.Person.LastName)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.Person.LastName)
@Html.ValidationMessageFor(model => model.Person.LastName)
</div>
<div class="editor-label">
@Html.LabelFor(model => model.Person.Notes)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.Person.Notes)
@Html.ValidationMessageFor(model => model.Person.Notes)
</div>
<br />
<div>
<h4>Contacts:</h4>
<table>
<tr>
<td>Title: @Html.EditorFor(model => model.NewContact_Title)</td>
<td>Value: @Html.EditorFor(model => model.NewContact_Value)</td>
<td>
<input type="submit" name="btnSubmit" value="AddContact" /></td>
</tr>
</table>
<div>
@contactsGrid.GetHtml()
</div>
</div>
<p>
<input type="submit" name="btnSubmit" value="CreatePerson" />
</p>
</fieldset>
}
<div>
@Html.ActionLink("Back to List", "Index")
</div>
@section Scripts {
@Scripts.Render("~/bundles/jqueryval")
}
@model mvcapapplication1.Models.PersonCreateModel
@{
ViewBag.Title=“创建”;
var contactsGrid=新的WebGrid(Model.Person.Contacts);
}
创造
@使用(Html.BeginForm())
{
@Html.ValidationSummary(true)
人
@LabelFor(model=>model.Person.FirstName)
@EditorFor(model=>model.Person.FirstName)
@Html.ValidationMessageFor(model=>model.Person.FirstName)
@LabelFor(model=>model.Person.LastName)
@EditorFor(model=>model.Person.LastName)
@Html.ValidationMessageFor(model=>model.Person.LastName)
@LabelFor(model=>model.Person.Notes)
@EditorFor(model=>model.Person.Notes)
@Html.ValidationMessageFor(model=>model.Person.Notes)
联络:
标题:@Html.EditorFor(model=>model.NewContact_Title)
值:@Html.EditorFor(model=>model.NewContact\u值)
@contactsGrid.GetHtml()
}
@ActionLink(“返回列表”、“索引”)
@节脚本{
@Scripts.Render(“~/bundles/jqueryval”)
}
我试图实现的是,用户可以在最后单击“创建”之前向此人添加多个联系人
我有两个问题:
1-这是最好的方法吗?有没有一种更简单/更简短的方法,比如使用javascript或jquery
2-当我第一次单击AddContact时效果很好,第二次单击Person.Contacts时是空的,而且我无法清除AddContact文本框
我在Stackoverflow上搜索了整个网络,但没有找到任何答案,有一个未回答的问题
PS:我是MVC新手,来自ASP.NET Webforms。以我个人的观点,我认为更好的方法是在客户端处理联系人“添加”,如果您在服务器端没有对联系人的数据做任何“有用”的事(如保存到数据库或其他) 使用jQuery使用几行JavaScript,您可以为每个新联系人动态添加新的文本输入,当用户完成后,他可以点击submit,在一次调用中将所有信息发送到服务器 这种方法会更好,因为有两个原因,第一个原因是不会刷新页面来分散用户的注意力,第二个原因是可以避免用户多次调用服务器,这意味着根据您的流量可以节省100或1000次调用 编辑: 当然,您应该添加更多的功能和样式 要使其正常工作,视图模型应如下所示:
public class PersonCreateModel
{
public Person Person { get; set; }
public List<Contact> Contacts { get; set; }
}
公共类PersonCreateModel
{
公众人物{get;set;}
公共列表联系人{get;set;}
}
这是一个常见的问题,因此必须有很多其他的解决方案,看看它也有点“旧”,但概念仍然适用。我编辑了这个问题以提供代码,并通过删除实体框架来简化它,这只是一个带有集合属性的普通类。很好,但是我不知道如何使用JS/JQ将项目添加到网格/集合中,以便能够在HTTPPost中阅读它,如果您能提供一个示例或链接,我将不胜感激,谢谢。当然,我会将其添加到我的回答中谢谢Marcos,很抱歉反应太晚,我目前无法测试,我会在我有能力时通知您。再次感谢!你知道如何使用webgrid吗?还有一个问题,无论我是使用webgrid还是手动循环Contacts集合并放置控件,在第二次回发时,集合再次为空。