VS2010 MVC 调用MSChart时,用<img src="/HOME/GetChart"> 实现没问题。
另外一种方式:在VIEW中使用如下代码:
<%
Chart Chart2 = new Chart();
Chart2.Width = 412;
Chart2.Height = 296;
Chart2.RenderType = RenderType.ImageTag;
Chart2.Palette = ChartColorPalette.BrightPastel;
Title t = new Title("No Code Behind Page", Docking.Top, new System.Drawing.Font("Trebuchet MS", 14, System.Drawing.FontStyle.Bold), System.Drawing.Color.FromArgb(26, 59, 105));
Chart2.Titles.Add(t);
Chart2.ChartAreas.Add("Series 1");
// create a couple of series
Chart2.Series.Add("Series 1");
Chart2.Series.Add("Series 2");
// add points to series 1
foreach (int value in (List<int>)ViewData["Chart"])
{
Chart2.Series["Series 1"].Points.AddY(value);
}
// add points to series 2
foreach (int value in (List<int>)ViewData["Chart"])
{
Chart2.Series["Series 2"].Points.AddY(value + 1);
}
Chart2.BorderSkin.SkinStyle = BorderSkinStyle.Emboss;
Chart2.BorderColor = System.Drawing.Color.FromArgb(26, 59, 105);
Chart2.BorderlineDashStyle = ChartDashStyle.Solid;
Chart2.BorderWidth = 2;
Chart2.Legends.Add("Legend1");
// Render chart control
Chart2.Page = this;
HtmlTextWriter writer = new HtmlTextWriter(Page.Response.Output);
Chart2.RenderControl(writer);
%>
Chart Chart2 = new Chart();
Chart2.Width = 412;
Chart2.Height = 296;
Chart2.RenderType = RenderType.ImageTag;
Chart2.Palette = ChartColorPalette.BrightPastel;
Title t = new Title("No Code Behind Page", Docking.Top, new System.Drawing.Font("Trebuchet MS", 14, System.Drawing.FontStyle.Bold), System.Drawing.Color.FromArgb(26, 59, 105));
Chart2.Titles.Add(t);
Chart2.ChartAreas.Add("Series 1");
// create a couple of series
Chart2.Series.Add("Series 1");
Chart2.Series.Add("Series 2");
// add points to series 1
foreach (int value in (List<int>)ViewData["Chart"])
{
Chart2.Series["Series 1"].Points.AddY(value);
}
// add points to series 2
foreach (int value in (List<int>)ViewData["Chart"])
{
Chart2.Series["Series 2"].Points.AddY(value + 1);
}
Chart2.BorderSkin.SkinStyle = BorderSkinStyle.Emboss;
Chart2.BorderColor = System.Drawing.Color.FromArgb(26, 59, 105);
Chart2.BorderlineDashStyle = ChartDashStyle.Solid;
Chart2.BorderWidth = 2;
Chart2.Legends.Add("Legend1");
// Render chart control
Chart2.Page = this;
HtmlTextWriter writer = new HtmlTextWriter(Page.Response.Output);
Chart2.RenderControl(writer);
%>
HomeController:
public ActionResult About()
{
List<int> chartList = new List<int>();
chartList.Add(1);
chartList.Add(2);
chartList.Add(6);
chartList.Add(5);
chartList.Add(4);
ViewData["Chart"] = chartList;
return View();
}
{
List<int> chartList = new List<int>();
chartList.Add(1);
chartList.Add(2);
chartList.Add(6);
chartList.Add(5);
chartList.Add(4);
ViewData["Chart"] = chartList;
return View();
}
查看源文件:控件被生成为一个图片,图片的src如下:
<img src="/Home/ChartImg.axd?i=chart_3a3c22f8ad774c3a9c765a531b51f334_0.png&g=c2c46849320a42b1ac821756bacadb31" alt="" style="height:296px;412px;border-0px;" />
此时图片是显现不出来的。为一个叉叉。不明白什么原因。
将同样的代码在vs2008实现,控件被生成为一个图片,图片的src如下:
<img src="/ChartImg.axd?i=chart_adabc7b50f574ce3a16a2cfdb6855af0_1.png&g=db21ec7883804c238a3e7fc3b0b6443d" alt="" style="height:296px;412px;border-0px;" />
曲线正常显示。。。。。。这究竟是什么原因呢。然后在vs2010上做修改。将所有web.config中mschart的相关配置设置从4.0.0.0改成3.5.0.0
曲线又正常显示了。
在MVC中添加一个webform来实现mschart,因为项目中的需求有用户与曲线交互,即需要点击曲线上的点,不会在MVC上实现,准备在MVC项目上增加一个webform来做,可是问题又来了,.net 4.0里自带了一个System.Web.UI.DataVisualization,以上的问题再次出现了,曲线图片仍然显示不出来。感觉还是.net 4的原因,于是又在引用准备添加C:\Program Files\Microsoft Chart Controls\Assemblies中的System.Web.UI.DataVisualization,可每次添加完后都是4.0的dll,无赖跑去删除了4.0的System.Web.UI.DataVisualization的dll。MVC中的webform的MSChart又出现了。这究竟是什么原因呢?