带有列表或数组列表的下拉列表绑定 [英] dropdown binding with list or arraylist

问题描述

plz帮帮我，

我需要的是使用arraylist或list下拉绑定
带有值字段和文本字段的

ID名称
---- -----
1辆车
2辆巴士
3 XYZ

这样，我有许多领域.帮助我做到这一点

plz help me,

what i need is drop down binding with arraylist or list
with value field and text field

ids Name
---- -----
1 Car
2 Bus
3 XYZ

in this way i have number of fields. help me in doing this

public int ids
{
get;
set;
}
public string Name
{
get;
set;
}

推荐答案

我假设我们有一个下拉列表(DropDownList1)，其中一页具有以下结构，

I assume we have a drop down list (DropDownList1) one the page with following structure,

<asp:dropdownlist id="DropDownList1" runat="server" datatextfield="Name" datavaluefield="Id" xmlns:asp="#unknown">
</asp:dropdownlist>

以及后面的相关代码，以用数据填充DropDownList，

and related code behind to populate the DropDownList with data,

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        IList persons = new List<Person>()
        {
             new Person(){ Id="1", Name="A"},
             new Person(){ Id="2", Name="B"},
             new Person(){ Id="3", Name="C"},
        };

        DropDownList1.DataSource = persons;
        DropDownList1.DataBind();
    }

    public class Person
    {
        public string Id { get; set; }
        public string Name { get; set; }
    }
}

因此，从上面的代码中我们可以看到，我创建了一个具有两个属性Id和Name的Person类型.我将ID设置为DropDownList的值字段，并将Name设置为Textfield.

我创建了一个人员列表，并将该列表设置为DropDownList的数据源.最后，使用DataBind()将数据源与DropDownList绑定.

注意:我已经在名为Default.aspx
的页面上完成了所有这些操作
希望对您有所帮助:)

So from the above code we can seer, I created a Person type with two property Id and Name. I set the Id as value field for the DropDownList and Name as Textfield.

I Created a List of Person and set that list as data source of the DropDownList. Finally to Bind the data source with the DropDownList using DataBind().

Note: I have done all these on a page named Default.aspx

Hope it helps :)

Dictionary<int,string> list=new Dictionary<int,string>();
list.Add(1," Car");
list.Add(2," Bus");
list.Add(3," XYZ");
dropItems.DataSource=list.toList();

或为您的问题，我们需要创建车辆类别列表为

or for your problem We need Create List of Vehicle Class as

public class Vehicle
{
 public int ids  {  get;set;}
 public string Name{get;set;}
}

然后加载它............................

Then load it ...........................

List<vehicle> Vehicles=new List<vehicle>;
Vehicles.Add(1," Bus");
Vehicles.Add(2," Car");
Vehicles.Add(3," XYZ");
dropItems.DataSource=Vehicles;

或者您可以从Vehicle Table或其他数据库中获取它.
我认为您有解决方案.

or you can get it from Database from Vehicle Table or something.
I think you have your solution.

如果您从数据库查询中获取值，则为
那么你可以做...

if you get the values from a db query
then you can make...

var result = RESULT_OF_YOUR_QUERY;
dropItems.DataSource=result;
dropItems.DataValueField = "ids";
dropItems.DataTextField = "Name";
dropItems.DataBind();

这篇关于带有列表或数组列表的下拉列表绑定的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！