将垂直滚动条添加到面板

问题描述 投票:35回答:5

我试图使Panel可滚动,但只是垂直(所以AutoScroll将无法工作,因为子控件超过左边缘必须)。

那怎么办?

c# .net winforms scroll
5个回答
27
投票

假设您正在使用winforms,默认面板组件不会为您提供禁用水平滚动组件的方法。解决方法是禁用自动滚动并自己添加滚动条:

ScrollBar vScrollBar1 = new VScrollBar();
vScrollBar1.Dock = DockStyle.Right;
vScrollBar1.Scroll += (sender, e) => { panel1.VerticalScroll.Value = vScrollBar1.Value; };
panel1.Controls.Add(vScrollBar1);

详细讨论here


27
投票

试试这个“仅”滚动垂直。 (自动滚动在接受更改之前必须为false)

mypanel.AutoScroll = false;
mypanel.HorizontalScroll.Enabled = false;
mypanel.HorizontalScroll.Visible = false;
mypanel.HorizontalScroll.Maximum = 0;
mypanel.AutoScroll = true;

5
投票

Panel有一个AutoScroll财产。只需将该属性设置为True,面板将在需要时自动添加滚动条。


2
投票

下面是实现自定义垂直滚动条的代码。这里重要的细节是通过计算添加到面板的控件占用的空间来了解何时需要滚动条。

panelUserInput.SuspendLayout();
panelUserInput.Controls.Clear();
panelUserInput.AutoScroll = false;
panelUserInput.VerticalScroll.Visible = false;

// here you'd be adding controls

int x = 20, y = 20, height = 0;
for (int inx = 0; inx < numControls; inx++ )
{
    // this example uses textbox control
    TextBox txt = new TextBox();
    txt.Location = new System.Drawing.Point(x, y);
    // add whatever details you need for this control
    // before adding it to the panel
    panelUserInput.Controls.Add(txt);
    height = y + txt.Height;
    y += 25;
}
if (height > panelUserInput.Height)
{
    VScrollBar bar = new VScrollBar();
    bar.Dock = DockStyle.Right;
    bar.Scroll += (sender, e) => { panelUserInput.VerticalScroll.Value =  bar.Value; };
    bar.Top = 0;
    bar.Left = panelUserInput.Width - bar.Width;
    bar.Height = panelUserInput.Height;
    bar.Visible = true;
    panelUserInput.Controls.Add(bar);
}
panelUserInput.ResumeLayout();

// then update the form
this.PerformLayout();

-1
投票

添加到面板的样式代码如下:

<asp:Panel ID="myPanel" runat="Server" CssClass="myPanelCSS" style="overflow-y:auto; overflow-x:hidden"></asp:Panel>
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