在WinForms中更改ListView中滚动条的颜色

using System;
using System.Drawing;
using System.Windows.Forms;
using System.Windows.Forms.VisualStyles;

public class CustomListView : ListView
{
    protected override void OnPaint(PaintEventArgs e)
    {
        base.OnPaint(e);

        if (ScrollBarRenderer.IsSupported)
        {
            VisualStyleRenderer renderer = new VisualStyleRenderer(VisualStyleElement.ScrollBar.ThumbButtonHorizontal.Normal);

            // 获取滚动条的颜色
            Color scrollBarColor = renderer.GetColor(ColorProperty.FillColor);

            // 绘制滚动条的背景
            e.Graphics.FillRectangle(new SolidBrush(scrollBarColor), this.ClientRectangle);

            // 绘制滑块
            Rectangle thumbRect = this.GetThumbRect();
            e.Graphics.FillRectangle(Brushes.Gray, thumbRect);
        }
    }

    private Rectangle GetThumbRect()
    {
        int thumbWidth = 10; // 滑块的宽度
        int thumbHeight = this.ClientSize.Height; // 滑块的高度
        int thumbPosition = 0; // 滑块的位置

        // 计算滑块的位置
        if (this.Items.Count > 0)
        {
            int maxThumbPosition = this.ClientSize.Height - thumbHeight;
            int maxScrollPosition = this.Items.Count * this.GetItemRect(0).Height - this.ClientSize.Height;

            if (maxScrollPosition > 0)
            {
                thumbPosition = (int)((double)this.VerticalScroll.Value / maxScrollPosition * maxThumbPosition);
            }
        }

        return new Rectangle(this.ClientSize.Width - thumbWidth, thumbPosition, thumbWidth, thumbHeight);
    }
}

// 使用自定义的ListView控件
public class MainForm : Form
{
    public MainForm()
    {
        // 创建自定义的ListView控件
        CustomListView listView = new CustomListView();
        listView.Dock = DockStyle.Fill;

        // 添加一些示例数据
        for (int i = 0; i < 100; i++)
        {
            listView.Items.Add("Item " + i);
        }

        // 将自定义的ListView控件添加到窗体中
        this.Controls.Add(listView);
    }

    [STAThread]
    public static void Main()
    {
        Application.EnableVisualStyles();
        Application.Run(new MainForm());
    }
}