MVC中图表控件如何在ASP.NET中使用?相信很多没有经验的人对此束手无策,为此本文总结了问题出现的原因和解决方法,通过这篇文章希望你能解决这个问题。
首先定义一个controller,提供以下方法实现
#region Chart Component public FileResult CreateChart(SeriesChartType chartType) { IList<ResultModel> peoples = _resultService.GetResults(); Chart chart = new Chart(); chart.Width = 700; chart.Height = 300; chart.BackColor = Color.FromArgb(211, 223, 240); chart.BorderlineDashStyle = ChartDashStyle.Solid; chart.BackSecondaryColor = Color.White; chart.BackGradientStyle = GradientStyle.TopBottom; chart.BorderlineWidth = 1; chart.Palette = ChartColorPalette.BrightPastel; chart.BorderlineColor = Color.FromArgb(26, 59, 105); chart.RenderType = RenderType.BinaryStreaming; chart.BorderSkin.SkinStyle = BorderSkinStyle.Emboss; chart.AntiAliasing = AntiAliasingStyles.All; chart.TextAntiAliasingQuality = TextAntiAliasingQuality.Normal; chart.Titles.Add(CreateTitle()); chart.Legends.Add(CreateLegend()); chart.Series.Add(CreateSeries(peoples,chartType)); chart.ChartAreas.Add(CreateChartArea()); MemoryStream ms = new MemoryStream(); chart.SaveImage(ms); return File(ms.GetBuffer(), @"image/png"); } [NonAction] public Title CreateTitle() { Title title = new Title(); title.Text = "Result Chart"; title.ShadowColor = Color.FromArgb(32, 0, 0, 0); title.Font = new Font("Trebuchet MS", 14F, FontStyle.Bold); title.ShadowOffset = 3; title.ForeColor = Color.FromArgb(26, 59, 105); return title; } [NonAction] public Legend CreateLegend() { Legend legend = new Legend(); legend.Name = "Result Chart"; legend.Docking = Docking.Bottom; legend.Alignment = StringAlignment.Center; legend.BackColor = Color.Transparent; legend.Font = new Font(new FontFamily("Trebuchet MS"), 9); legend.LegendStyle = LegendStyle.Row; return legend; } [NonAction] public Series CreateSeries(IList<ResultModel> results, SeriesChartType chartType) { Series seriesDetail = new Series(); seriesDetail.Name = "Result Chart"; seriesDetail.IsValueShownAsLabel = false; seriesDetail.Color = Color.FromArgb(198, 99, 99); seriesDetail.ChartType = chartType; seriesDetail.BorderWidth = 2; seriesDetail["DrawingStyle"] = "Cylinder"; seriesDetail["PieDrawingStyle"] = "SoftEdge"; DataPoint point; foreach (ResultModel result in results) { point = new DataPoint(); point.AxisLabel =result.ID; point.YValues = new double[] {double.Parse(result.GPA) }; seriesDetail.Points.Add(point); } seriesDetail.ChartArea = "Result Chart"; return seriesDetail; } [NonAction] public ChartArea CreateChartArea() { ChartArea chartArea = new ChartArea(); chartArea.Name = "Result Chart"; chartArea.BackColor = Color.Transparent; chartArea.AxisX.IsLabelAutoFit = false; chartArea.AxisY.IsLabelAutoFit = false; chartArea.AxisX.LabelStyle.Font = new Font("Verdana,Arial,Helvetica,sans-serif", 8F, FontStyle.Regular); chartArea.AxisY.LabelStyle.Font = new Font("Verdana,Arial,Helvetica,sans-serif", 8F, FontStyle.Regular); chartArea.AxisY.LineColor = Color.FromArgb(64, 64, 64, 64); chartArea.AxisX.LineColor = Color.FromArgb(64, 64, 64, 64); chartArea.AxisY.MajorGrid.LineColor = Color.FromArgb(64, 64, 64, 64); chartArea.AxisX.MajorGrid.LineColor = Color.FromArgb(64, 64, 64, 64); chartArea.AxisX.Interval = 1; return chartArea; } #endregion
图表类的各种属性,可以控制宽度,高度,边框颜色,背景颜色,皮肤,调色板,等。最终形成图片格式展现在页面。
这里介绍的项目是ASP.NET MVC的图表控件的一个小demo示例,最终展示如下:
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