代码
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WindowsFormsApp1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
if(textBox1.Text=="")
{
MessageBox.Show("内容不能为空");
}
else
{
listView1.Items.Add(textBox1.Text.Trim());
}
}
private void button2_Click(object sender, EventArgs e)
{
if(listView1.SelectedItems.Count==0)
{
MessageBox.Show("请选择想要删除的内容");
}
else
{
listView1.Items.RemoveAt(listView1.SelectedItems[0].Index);
//删除所选内容
listView1.SelectedItems.Clear();//取消控件选择
}
}
private void button3_Click(object sender, EventArgs e)
{
if(listView1.Items.Count==0)
{
MessageBox.Show("内容为空");
}
else
{
listView1.Items.Clear();
}
}
}
}
界面
界面.PNG
运行效果
运行效果.PNG
