C# 绘制ComboBox控件图片列表

最新推荐文章于 2025-05-30 16:56:33 发布

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最新推荐文章于 2025-05-30 16:56:33 发布 · 926 阅读

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这个C#示例展示了如何在ComboBox控件中显示图像列表，并在选择项时更新PictureBox显示所选图像。代码包括添加图像文件到ComboBox，自定义绘制ComboBox项以显示图像，以及响应选中项改变事件来更新图像显示。

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using System;
using System.ComponentModel;
using System.Drawing;
using System.IO;
using System.Text.RegularExpressions;
using System.Windows.Forms;

namespace WinFormDrawImage
{
    public partial class FormDrawImage : Form
    {
        private ComboBox cmbImage;
        private PictureBox picture;
        private OpenFileDialog openFile;

        public FormDrawImage()
        {
            InitializeComponent();
            cmbImage = new ComboBox();
            cmbImage.Font = new Font(Font.Name, 24F);
            cmbImage.Dock = DockStyle.Top;
            cmbImage.DropDownStyle = ComboBoxStyle.DropDownList;
            cmbImage.DrawMode = DrawMode.OwnerDrawFixed;
            cmbImage.DrawItem += new DrawItemEventHandler(cmbImage_DrawItem);
            cmbImage.SelectedIndexChanged += new EventHandler(cmbImage_SelectedIndexChanged);
            this.Controls.Add(cmbImage);
            picture = new PictureBox();