C# Winform ListView 做个日志消息显示功能

▲ 点击按钮效果

▲ ImageList 里面放了三张图片

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

namespace CsTest
{
    public partial class FormMain : Form
    {
        public FormMain()
        {
            InitializeComponent();
            InitListView(listView1, imageList1);
        }

        private void InitListView(ListView listView, ImageList imageList)
        {
            listView.SmallImageList = imageList;
            ColumnHeader columnHeader1 = new ColumnHeader() { Name = "dateTime", Text = "日志时间", Width = 200 };
            ColumnHeader columnHeader2 = new ColumnHeader() { Name = "infoString", Text = "日志信息", Width = 220 };
            listView.Columns.AddRange(new ColumnHeader[] { columnHeader1, columnHeader2 });

            listView.HeaderStyle = ColumnHeaderStyle.None;
            listView.View = View.Details;
            listView.HideSelection = false;
            listView.SmallImageList = imageList;
        }

        private void Addlog(int imageIndex, string info)
        {
            Addlog(listView1, imageList1, imageIndex, info, 20);
        }

        private void Addlog(ListView listView, ImageList imageList, int imageIndex, string info, int maxDisplayItems)
        {
            if (listView.InvokeRequired)
            {
                listView.Invoke(new Action(() =>
                {
                    if (listView.Items.Count > maxDisplayItems)
                    {
                        listView.Items.RemoveAt(maxDisplayItems);
                    }

                    ListViewItem lstItem = new ListViewItem(" " + DateTime.Now.ToString(), imageIndex);
                    lstItem.SubItems.Add(info);
                    listView.Items.Insert(0, lstItem);
                }));
            }
            else
            {
                if (listView.Items.Count > maxDisplayItems)
                {
                    listView.Items.RemoveAt(maxDisplayItems);
                }

                ListViewItem lstItem = new ListViewItem(" " + DateTime.Now.ToString(), imageIndex);
                lstItem.SubItems.Add(info);
                listView.Items.Insert(0, lstItem);
            }
        }

        private int count = 0;
        private void btnSendMessage_Click(object sender, EventArgs e)
        {
            int index = count % 3;

            switch (index)
            {
                default:
                case 0:
                    Addlog(index, "这是一条正常消息");
                    break;
                case 1:
                    Addlog(index, "这是一条警告消息");
                    break;
                case 2:
                    Addlog(index, "这是一条错误消息");
                    break;
            }

            count++;
        }
    }
}