C# Winform編程ListBox之添加圖標

listBox 增加圖標，現在使用DrawItem 的事件自己繪制圖標及文字，繪制完成后需要做list內容的選擇效果

listBox 的 DrawMode 需要設置 DrawMode.OwnerDrawFixed， 否則不會寫顯示效果

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 EXchangeDatum
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            this.Load += Form1_Load;
            listBox1.DrawItem += ListBox1_DrawItem;
        }

        private void ListBox1_DrawItem(object sender, DrawItemEventArgs e)
        {
            Brush myBrush = Brushes.Black;
            Color RowBackColorSel = Color.FromArgb(150, 200, 250);//選擇項目顏色
            if ((e.State & DrawItemState.Selected) == DrawItemState.Selected)
            {
                myBrush = new SolidBrush(RowBackColorSel);
            }
            else
            {
                myBrush = new SolidBrush(Color.White);
            }
            e.Graphics.FillRectangle(myBrush, e.Bounds);
            e.DrawFocusRectangle();//焦點框

            //繪制圖標
            Image image = imageList1.Images[e.Index];
            Graphics graphics = e.Graphics;
            Rectangle bound = e.Bounds;
            Rectangle imgRec = new Rectangle(
                bound.X,
                bound.Y,
                bound.Height,
                bound.Height);
            Rectangle textRec = new Rectangle(
                imgRec.Right,
                bound.Y,
                bound.Width - imgRec.Right,
                bound.Height);
            if (image != null)
            {
                e.Graphics.DrawImage(
                    image,
                    imgRec,
                    0,
                    0,
                    image.Width,
                    image.Height,
                    GraphicsUnit.Pixel);
                //繪制字體
                StringFormat stringFormat = new StringFormat();
                stringFormat.Alignment = StringAlignment.Near;
                e.Graphics.DrawString(listBox1.Items[e.Index].ToString(), e.Font, new SolidBrush(Color.Black), textRec, stringFormat);
            }
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            listBox1.DrawMode = DrawMode.OwnerDrawFixed;
            listBox1.Items.Add("大白菜");
            listBox1.Items.Add("西藍花");
            listBox1.Items.Add("花菜");
            listBox1.Items.Add("芹菜");
            listBox1.Items.Add("胡蘿卜");
            listBox1.Items.Add("辣椒");
            listBox1.Items.Add("西紅柿");
        }
    }
}