如何在C#中使datagridview滚动缓慢-无法查看整行内容

public class SlowScrollDataGridView : DataGridView
{
    private const int WM_VSCROLL = 0x0115;
    private const int SB_LINEUP = 0;
    private const int SB_LINEDOWN = 1;

    protected override void WndProc(ref Message m)
    {
        if (m.Msg == WM_VSCROLL)
        {
            int scrollType = m.WParam.ToInt32() & 0xFFFF;
            if (scrollType == SB_LINEUP || scrollType == SB_LINEDOWN)
            {
                // 缓慢滚动的逻辑
                SlowScroll(scrollType);
                return;
            }
        }
        base.WndProc(ref m);
    }

    private async void SlowScroll(int scrollType)
    {
        int scrollAmount = 10; // 每次滚动的行数
        int scrollInterval = 50; // 每次滚动的时间间隔（毫秒）

        for (int i = 0; i < scrollAmount; i++)
        {
            if (scrollType == SB_LINEUP)
            {
                // 向上滚动
                VerticalScrollBar.Value -= 1;
            }
            else if (scrollType == SB_LINEDOWN)
            {
                // 向下滚动
                VerticalScrollBar.Value += 1;
            }

            await Task.Delay(scrollInterval);
        }
    }
}

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
        dataGridView1 = new SlowScrollDataGridView();
        // 其他初始化代码...
    }
}