C# - 无法在 WinForms 的列表框中执行键值操作 [英] C# - Cannot do Key-Value in a ListBox in WinForms

问题描述

我正在使用 WinForms 中的 ListBox 编写 C# 应用程序.

I'm writing a C# app using a ListBox in WinForms.

我从一个 XML 文件中获取我的数据(ID 和全名).我想在列表框中显示全名，当我选择其中一个时，我想获取相关的 id.

I get my data (id and full name) from an XML file. I want to show full names in the listbox and when I select one of them, I want to get the relevant id.

我尝试使用 SelectedValue 属性，但没有成功.

I tried using SelectedValue property with no luck.

我也试过 KeyValuePair，它在列表框中显示[full name, id]"，这不是我想要的:

I also tried KeyValuePair and it shows "[full name, id]" in the listbox, which is not what I wanted:

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

简而言之，如何在 C# 中模拟 HTML 选择?我想在列表框中显示全名并在后端获取相关 id.

How can I simulate a HTML select in C# in short? I want to show full names in the listbox and to get relevant id in the backend.

推荐答案

使用c# 字典为此，

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();

<小时>

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

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