Visual C#:列表框清除项目的问题 [英] Visual C# : listbox clearing item's issue

问题描述

我最近正在学习listbox的基础知识，直到现在我已经学到了这些东西:

TextBox1
button1
button2
ListBox1


并且我编写了以下代码:

I''m learning the basics of listbox recently, and til now I''ve learned these things:

TextBox1
button1
button2
ListBox1


and I''ve written the following code:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace listbox_test
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }


//the add button

        private void button1_Click(object sender, EventArgs e)
        {
            listBox1.Items.Add(textBox1.Text);
        }

//the clear button

        private void button2_Click(object sender, EventArgs e)
        {
            listBox1.Items.Clear();

        }


    }
}

该程序可以正常运行；事实是，当我按下button2时，列表框中的全名将被删除.

-1-
我想知道如何更改它并使其仅删除输入的最后一个字符串(后入)

有可能吗?
为了进行确认，除了列表框之外，还有其他灵活的对象吗?


-2-
我可以选择我想要的字符串，然后按清除"以清除它吗?

这部分我觉得它更合适，即使最后一件事让我头疼，因为我真的很无能为力."


所以，您能帮我忙吗?

the program works completely fine; the thing is, when I press button2, the whole names in the listbox will be deleted.

-1-
I wonder how could I change it and make it only delete the last string entered (last-in)

is it possible?
and for acknowledgement, is there any other flexible object rather than the listbox?


-2-
can I just select a string I want and then just press on "clear" to clear it

"this part I find it more suitable, even though the last in thing gives me a headache because I''m really clueless "


so, can you give me your hand, mate?

推荐答案

仅阅读控件System.Windows.Forms.ListBox上的MSDN帮助有什么问题: http://msdn.microsoft.com/en-us/library/system.windows.forms .listbox.aspx [ ^ ]?

您所有的问题都无需查看代码，只需查看System.Windows.Forms.ListBox.Items以及该属性的类的属性即可回答:Clear，Remove和RemoveAt.

祝你好运，

—SA

What''s wrong with simply reading of the MSDN help on the control System.Windows.Forms.ListBox: http://msdn.microsoft.com/en-us/library/system.windows.forms.listbox.aspx[^]?

All your questions do not need a look at your code and are answered by looking at System.Windows.Forms.ListBox.Items and the properties of the class of this property: Clear, Remove and RemoveAt.

Good luck,

—SA

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