如何在ListBox项中添加菜单 [英] How To Add menu in ListBox Items

问题描述

我想在我的win表单中为每个listBox项添加一些菜单。



我在Google上发现了许多文章，用于在listBox中启用ContextMenuStrip，但这不是正在运行。



i希望菜单在我将鼠标光标移动到listBox项目后立即显示。



请帮助。

I want to add some menu to each listBox items in my win form.

I have found many articles on Google for enabling ContextMenuStrip in listBox but that is not working up.

i want the menu to appear as soon i move my mouse cursor on listBox item.

please help.

推荐答案

以下是您可以通过它的示例

Here is the example you can go through it

public partial class Form1 : Form
{
    RadListBox listBox = new RadListBox();
    public Form1()
    {
        InitializeComponent();
        this.Controls.Add(listBox);
 
        listBox.DataSource = new string[] { "1", "2", "3" };
        RadContextMenu menu = new RadContextMenu();
        RadContextMenuManager mgr = new RadContextMenuManager();
        mgr.SetRadContextMenu(listBox, menu);
 
        menu.DropDownOpening += new System.ComponentModel.CancelEventHandler(menu_DropDownOpening);
    }
 
    void menu_DropDownOpening(object sender, System.ComponentModel.CancelEventArgs e)
    {
        RadContextMenu menu = (RadContextMenu)sender;
        menu.Items.Clear();
        RadElement elementAtPoint = this.listBox.ElementTree.GetElementAtPoint(this.listBox.ListBoxElement.PointFromScreen(Control.MousePosition));
        if (elementAtPoint is RadListBoxItem)
        {
            // Add menu options based on the item.
            menu.Items.Add(new RadMenuItem((elementAtPoint as RadListBoxItem).Text));
        }
    }
}

这篇关于如何在ListBox项中添加菜单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！