在C＃中不能做的键值在列表框中 [英] Cannot do key-value in listbox in C#

问题描述

我在使用winforms编写一个C＃应用程序。我有一个列表框。我从xml文件，用户名和他们的id获取我的数据。我想要的名称显示在列表框中，当我选择其中之一，我想获得他/她的id使用selectedValue属性。但我不能这样做。我试过keyValuePair，它在列表框中显示[username，id]，这是不好的（见下面的代码）。如何在c＃中模拟html select？我想要的名称显示在列表框中，但想获得id在后端。感谢...

i'm writing a C# app using winforms. I have a listbox. I get my data from xml file, user name and their id's. I want names to be shown in the listbox and when I select one of them, I want to get his/her id using selectedValue property. However I cannot do this. I tried keyValuePair which shows "[username, id]" in the listbox which is not good (see code below). How can I simulate html select in c# in short? I want names to be shown in the listbox but want to get id's in the backend. Thanks...

LB_UserList.Items.Add(new KeyValuePair<string, string>(full_name, node["user_id"].InnerText));

推荐答案

use c＃词典，

Dictionary<string, string> list = new Dictionary<string, string>();
list.Add("item 1", "Item 1");
list.Add("item 2", "Item 2");
list.Add("item 3", "Item 3");
list.Add("item 4", "Item 4");

dropdown.DataSource = list;
dropdown.DataTextField = "Value";
dropdown.DataValueField = "Key";
dropdown.DataBind();

---

em>

listBox.DataSource = new BindingSource(list, null); 
listBox.DisplayMember = "Value"; 
listBox.ValueMember = "Key";

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