C# WinForms : Make panel scrollbar invisible

Question

我有一个 panel1，AutoScroll = true。我必须让 panel1 使用 btnUp 和 btnDown。到目前为止，我已经完成了要求的内容

private void btnUpClicked(Object sender, EventArgs e)
{
    if (panel1.VerticalScroll.Value - 55 > 0)
        panel1.VerticalScroll.Value -= 55;
    else  panel1.VerticalScroll.Value = 0;
}

private void btnDownClicked(Object sender, EventArgs e)
{
    panel1.VerticalScroll.Value += 55;
}

但现在我需要隐藏 Scrollbar 或使其不可见。我试过了

panel1.VerticalScroll.Visible = false;

但它不起作用。伙计们有什么想法吗？

Answer 1

好的，我已经为您完成了这个工作示例。您所要做的就是根据面板内所有项目的总大小更改最大值。

---

表单代码:

public partial class Form1 : Form
{
    private int location = 0;

    public Form1()
    {
        InitializeComponent();

        // Set position on top of your panel
        pnlPanel.AutoScrollPosition = new Point(0, 0);

        // Set maximum position of your panel beyond the point your panel items reach.
        // You'll have to change this size depending on the total size of items for your case.
        pnlPanel.VerticalScroll.Maximum = 280;
    }

    private void btnUp_Click(object sender, EventArgs e)
    {
        if (location - 20 > 0)
        {
            location -= 20;
            pnlPanel.VerticalScroll.Value = location;
        }
        else
        {
            // If scroll position is below 0 set the position to 0 (MIN)
            location = 0;
            pnlPanel.AutoScrollPosition = new Point(0, location);
        }
    }

    private void btnDown_Click(object sender, EventArgs e)
    {
        if (location + 20 < pnlPanel.VerticalScroll.Maximum)
        {
            location += 20;
            pnlPanel.VerticalScroll.Value = location;
        }
        else
        {
            // If scroll position is above 280 set the position to 280 (MAX)
            location = pnlPanel.VerticalScroll.Maximum;
            pnlPanel.AutoScrollPosition = new Point(0, location);
        }
    }
}

---

图片示例:

您必须在面板上将 AutoScroll 选项设置为 False。我希望你能理解我所做的，并让你的面板按照你想要的方式运行。如果您有任何问题，请随时提出。