Question

我的winform中有一个flowlayoutpanel，动态添加图像。我希望vertical scroll bar始终位于底部，显示最后添加的图像。我怎样才能做到这一点？我有

AutoScroll = true

FLow Direction = Top Down

Wrap Content = False

Answer 1

可滚动容器控件（如FlowLayoutPanel）会自动保持控件的焦点在视图中。但PictureBox很特别，它无法获得焦点。因此，您必须通过明确要求FLP使添加的控件可见来提供帮助，使用其ScrollControlIntoView（）方法。像这样：

    var pic = new PictureBox();
    //...
    flowLayoutPanel1.Controls.Add(pic);
    flowLayoutPanel1.ScrollControlIntoView(pic);

具有强大的优势，这适用于您应用于FLP的任何布局设置。您还可以修改AutoScrollPosition属性，但更难做到这一点：

    flowLayoutPanel1.AutoScrollPosition = new Point(
        pic.Right  - flowLayoutPanel1.AutoScrollPosition.X, 
        pic.Bottom - flowLayoutPanel1.AutoScrollPosition.Y);

Answer 2

试试这个：

scrollBar.Value=scrollBar.Maximum;

这里scrollBar是winform中的ScrollBar控件。

有关详细信息，请check this.

Answer 3

这是一种强制最后一个控件进入视图的方法。

        flowLayoutPanel.ScrollControlIntoView(Control_To_Add); // Control_To_Add is the control we want to scroll to
        Button TempButton = new Button();
        TempButton.Width = _Panel.ClientRectangle.Width - 6; // Make the last control in the _Panel
        flowLayoutPanel.Controls.Add(TempButton); // We add this TempButton so we can scroll to the bottom of the _Panel.Controls
        flowLayoutPanel.ScrollControlIntoView(b); // We scroll to TempButton at the bottom of the _Panel.Controls
        flowLayoutPanel.Controls.Remove(b); // We remove TempButton
        b.Dispose(); // clean up

Answer 4

强制FlowLayoutPanel滚动并显示所有控件。代码更正：

flowLayoutPanel.ScrollControlIntoView(Control_To_Add); // Control_To_Add is the control we want to scroll to
Button TempButton = new Button();
TempButton.Width = _Panel.ClientRectangle.Width - 6; // Make the last control in the _Panel
flowLayoutPanel.Controls.Add(TempButton); // We add this TempButton so we can scroll to the bottom of the _Panel.Controls
flowLayoutPanel.ScrollControlIntoView(TempButton); // We scroll to TempButton at the bottom of the _Panel.Controls
flowLayoutPanel.Controls.Remove(TempButton); // We remove TempButton
b.Dispose(); // clean up

始终在垂直滚动条中滚动到底部

4 个答案: