滚动条向右移动，而不是向左移动 [英] Scrollbar moving to right instead of left

问题描述

我制作了一个在收到数据时动态绘制尖峰的图表。
在这个图表中，我创建了一个滚动条，所以只有20个数据点按时显示。

I have made a chart which dynamically draw a spike when data received. In this chart I have made a scrollbar, so only 20 datapoints get shown at on time.

public void Chart()
{
    ChartArea mov = SleepMovChar.ChartAreas["Movement"];
    mov.AxisX.ScrollBar.Size = 12;
    mov.AxisX.ScrollBar.ButtonStyle = ScrollBarButtonStyles.SmallScroll;
    mov.AxisX.ScrollBar.ButtonStyle = ScrollBarButtonStyles.All ^ ScrollBarButtonStyles.ResetZoom;
    mov.AxisX.ScrollBar.IsPositionedInside = true;
    mov.AxisX.ScrollBar.Enabled = true;
    mov.AxisX.ScaleView.Size = 20;
}

我的问题是，我想让数据收到时滚动条向右移动。现在，它向左移动，因此显示第一个数据。我只是希望显示最新的数据，以便滚动条跟随数据接收。

My problem is, that I want that scrollbar to move to right when data received. At the time now, it moves to left, so the first data is shown. I just want that the latest data is shown instead, so that the scrollbar follows the data receive.

推荐答案

如果希望可见区域跟踪示波器中的新数据，可以设置滚动位置：

If you want the visible area to follow the new data like in an oscilloscope, you can set the scroll position :

Series S1 = SleepMovChar.Series["yourSeriesByNameOrNumber"];
mov.AxisX.ScaleView.Position = S1.Points.Count - mov.AxisX.ScaleView.Size;

您需要在添加数据点后重复此操作。

You will need to repeat this whenever you have added data points..

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