我有一个System.
Windows.Forms.Panel有一些内容.
我试图以编程方式向上或向下滚动面板(垂直).
我已经尝试将AutoScrollPosition属性设置为面板上的新Point,但似乎没有这样做.
我将AutoScroll属性设置为true.
我甚至试图将VerticalScroll.Value设置为建议的here两倍,但这似乎也不起作用.
这正是我目前正在做的:
//I have tried passing both positive and negative values. panel.AutoScrollPosition = new Point(5,10);
AutoScrollPosition上的X和Y值保持为0和0.
对此的任何帮助或指导将不胜感激.
提前致谢,
马尔万
解决方法
这是一个解决方案.我想你可以使用Win32通过任意位置滚动您的面板,但是有一个简单的技巧可以帮助您实现您的要求:
public void ScrollToBottom(Panel p){ using (Control c = new Control() { Parent = p,Dock = DockStyle.Bottom }) { p.ScrollControlIntoView(c); c.Parent = null; } } //use the code ScrollToBottom(yourPanel);
或使用扩展方法方便:
public static class PanelExtension { public static void ScrollToBottom(this Panel p){ using (Control c = new Control() { Parent = p,Dock = DockStyle.Bottom }) { p.ScrollControlIntoView(c); c.Parent = null; } } } //Use the code yourPanel.ScrollToBottom();
UPDATE
//This can help you control the scrollbar with scrolling up and down. //The position is a little special. //Position for scrolling up should be negative. //Position for scrolling down should be positive public static class PanelExtension { public static void ScrollDown(this Panel p,int pos) { //pos passed in should be positive using (Control c = new Control() { Parent = p,Height = 1,Top = p.ClientSize.Height + pos }) { p.ScrollControlIntoView(c); } } public static void ScrollUp(this Panel p,int pos) { //pos passed in should be negative using (Control c = new Control() { Parent = p,Top = pos}) { p.ScrollControlIntoView(c); } } } //use the code,suppose you have 2 buttons,up and down to control the scrollbar instead of clicking directly on the scrollbar arrows. int i = 0; private void buttonUp_Click(object sender,EventArgs e) { if (i >= 0) i = -1; yourPanel.ScrollUp(i--); } private void buttonDown_Click(object sender,EventArgs e) { if (i < 0) i = 0; yourPanel.ScrollDown(i++); }
您可能想要使用的另一个解决方案是使用Panel.VerticalScroll.Value.不过,我认为你需要更多的研究,使它按照你的期望工作.因为我可以看到一旦改变了值,滚动条位置和控制位置就不能很好的同步.请注意,Panel.VerticalScroll.Value应位于Panel.VerticalScroll.Minimum和Panel.VerticalScroll.Maximum之间.