Question

我一直在寻找新的（真的很棒！）SciChart Tutorial，我遇到了一个问题。我正在尝试使用ViewportManager API使实时更新图表可缩放和可滚动。但是这段代码不起作用：

// Don't Scroll if user is Zooming
if (ParentSurface.ZoomState == ZoomStates.UserZooming) {
    return currentVisibleRange;
}

我收到ZoomState和ZoomStates的错误，让我知道ISciChartSurface不包含ZoomState的定义。据我所知，ZoomStates应该是SciChart.Charting.Visuals中的枚举，但是我无法在Assembly Explorer中找到它。我在安装SciChart时是否遗漏了某些东西？或者我 - 按照惯例 - 犯了一些非常愚蠢的错误？我该怎么办？谢谢！

的信息： SciChart版本4.1.1.8645

全班代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using SciChart.Charting.ViewportManagers;
using SciChart.Charting.Visuals;
using SciChart.Charting.Visuals.Axes;
using SciChart.Data.Model;



namespace SciCharter {
    /// <summary>
    /// Applies a scrolling window to the chart unless the user is zooming or panning
    /// </summary>
    public class ScrollingViewportManager : DefaultViewportManager {
        private readonly double _windowSize;
        public ISciChartSurface ParentSurface { get; set; }

        public ScrollingViewportManager(double windowSize) {
            _windowSize = windowSize;
        }

        public override void AttachSciChartSurface(ISciChartSurface scs) {
            base.AttachSciChartSurface(scs);
            this.ParentSurface = scs;
        }

        protected override IRange OnCalculateNewXRange(IAxis xAxis) {
            // The Current XAxis Visible Range
            var currentVisibleRange = xAxis.VisibleRange.AsDoubleRange();

            // Don't Scroll if user is Zooming
            if (ParentSurface.ZoomState == ZoomStates.UserZooming) {
                return currentVisibleRange;
            }

            var maxXRange = xAxis.GetMaximumRange().AsDoubleRange();
            double xMax = Math.Max(maxXRange.Max, currentVisibleRange.Max);

            // Scroll showing latest window range
            return new DoubleRange(xMax - _windowSize, xMax);

        }
    }
}

Answer 1

在文章SciChart WPF: New set of tutorials now online中，它说：

教程包含 ... WPF Chart Tutorial 06 – Adding Realtime Updates（15分钟）使用了SciChart v4.2中的一些功能，这些功能现在在QA中，仅在每晚构建源中可用。

SciChart WPF Nightly Builds可从私人nuget Feed获得。可以找到有关如何访问它们的完整说明here。

希望这有帮助！

ZoomStates的问题：'ISciChartSurface'不包含'ZoomStates'的定义

1 个答案: