如何从MVC中的选择列表中获取名称值 [英] How to get name value from selectlist in MVC

问题描述

我想从mvc中的SelectList获取名称值而非ID值。



这是我的代码



控制器

 var occupList = new SelectList（new [] 
 {
 new {ID = 1 ，Name =Student}，
 new {ID = 2，Name =House Wife}，
 new {ID = 3，Name =Business Man}，
 new { ID = 4，Name =Service Man}，
}，
ID，Name，1）; 
 ViewData [occupList] =占用列表; 
返回查看（）; 

查看

 @ Html.DropDownList（Occupation，ViewData [occupList]为SelectList，新{@ class =control-label，style =width：250px;}）

现在，当我从下拉列表中选择项目时，它显示所选项目，但它将ID值存储在数据库中。



例如：我从下拉列表中选择学生姓名值并保存。现在，在数据库中它存储1值。



但是我不想存储ID值，即1.我想存储Name值，即Student在数据库中。



谢谢。



我的尝试：



我尝试过很多东西，但没有任何效果。

解决方案

引用：

但我不想存储ID值，即1.我想存储Name值，即学生在数据库中。

如果您不想要 ID 值，则将 Text 分配给 ID

 var occupList = new SelectList（new [] 
 {
 new {ID = 学生，姓名=学生}，
新{ID =众议院妻子，姓名=众议院妻子}，
新{ID =商人，姓名=商人 }，
 new {ID =Service Man，Name =Service Man}，
}，

名称不随帖子发送，因此您无法使用传统方法阅读。如果您的数据是硬编码的，那么您已经知道ID等于什么。

私人列表< MyData> GetData（）
 {
返回新的List< MyData> {
 new MyData {ID = 1，Name =Student}，
 new MyData {ID = 2，Name =House Wife}，
 new MyData {ID = 3，Name =商人}，
新MyData {ID = 4，姓名=服务人}，
}; 
} 
 
 [HttpGet] 
 public ActionResult Index（）
 {
 var occupList = new SelectList（GetData（），
ID ，姓名，1）; 
 
 .... 
 
 //当表格发布时获取ID然后从数据中获取名称
 int postingID = 1; 
 string name = GetData（）。FirstOrDefault（d => d.ID == postedID）.Name; 
 
 .... 

编辑：当天，你*做*想要存储ID而不是文本，请相信我们，因为如果你不以这种方式维护数据完整性，它会回来并咬你。

I want to get the name value not ID value from SelectList in mvc.

Here is my code

Controller

var occupationList = new SelectList(new[] 
{
    new { ID = 1, Name = "Student" },
    new { ID = 2, Name = "House Wife" },
    new { ID = 3, Name = "Business Man" },
    new { ID = 4, Name = "Service Man" },
},
"ID", "Name", 1);
ViewData["occupationList"] = occupationList;
return View();

View

@Html.DropDownList("Occupation", ViewData["occupationList"] as SelectList, new {@class="control-label", style="width:250px;" })

Now, when I select the item from dropdownlist at that time it shows the selected item but it store the ID value in the database.

For ex : I select the Student Name value from the dropdownlist and save it. Now, in database it store the 1 value.

But I dont want to store the ID value i.e. 1. I want to store the Name value i.e. Student in database.

Thank You.

What I have tried:

I tried many thing but nothing worked.

解决方案

Quote:

But I dont want to store the ID value i.e. 1. I want to store the Name value i.e. Student in database.

if you dont want the ID value then assign the Text to ID

var occupationList = new SelectList(new[] 
{
    new { ID =  "Student", Name = "Student" },
    new { ID = "House Wife", Name = "House Wife" },
    new { ID = "Business Man", Name = "Business Man" },
    new { ID = "Service Man", Name = "Service Man" },
},

The name isn't sent with the post so you can't read it using traditional methods. If your data is hard-coded then you already know what the ID equates to.

private List<MyData> GetData()
{
    return new List<MyData> {
        new MyData{ ID=1, Name="Student" },
        new MyData{ ID=2, Name="House Wife" },
        new MyData{ ID=3, Name="Business Man" },
        new MyData{ ID=4, Name="Service Man" },
    };
}

[HttpGet]
public ActionResult Index()
{
    var occupationList = new SelectList(GetData(),
    "ID", "Name", 1);

    ....

    // when the form is posted get the ID then get the name from the data
    int postedID = 1;
    string name = GetData().FirstOrDefault(d => d.ID == postedID).Name;

    ....

Edit: By the day, you *do* want to store the ID and not the text, trust us on that as it'll come back and bite you if you don't maintain data integrity in this way.

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