我们正在使用免费版本的融合图表，想知道有没有一种方法可以在不使用任何第三方组件的情况下将生成的图表导出为图像。我们使用 ASP.Net 来生成图表。
问问题
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3 回答
2
解决方案
在对这个主题进行了研究之后，我找到了一个有用的解决方案。
为此，我们需要一个来自 Bytecout 的免费软件来将 swf 转换为图像。可以从此链接下载。
然后我们需要注册 COM dll 并添加对我们项目的引用。更多使用请参考以下
Protected Sub btnSwf2ImgConverter_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim swfobj As New SWFToImage.SWFToImageObject
swfobj.InitLibrary("demo", "demo")
swfobj.InputSWFFileName = Server.MapPath("dumps/swf/") & "FCF_MSColumn3D.swf"
If ddlImageExtension.SelectedValue = "jpg" Then
swfobj.ImageOutputType = TImageOutputType.iotJPG
ext = ".jpg"
Else
If ddlImageExtension.SelectedValue = "gif" Then
swfobj.ImageOutputType = TImageOutputType.iotGIF
ext = ".gif"
Else
If ddlImageExtension.SelectedValue = "png" Then
swfobj.ImageOutputType = TImageOutputType.iotPNG
ext = ".png"
Else
If ddlImageExtension.SelectedValue = "bmp" Then
swfobj.ImageOutputType = TImageOutputType.iotBMP
ext = ".bmp"
End If
End If
End If
End If
filenm = "FCF_Column3D" & ext
swfobj.Execute_Begin()
'swfobj.Execute()
swfobj.Execute_SetVariable("dataXML", "<graph animation='0' formatNumber='1' divLineColor='ff5904' divLineAlpha='20' alternateHGridAlpha='5' canvasBorderColor='666666' baseFontColor='666666' showAlternateHGridColor='1' AlternateHGridColor='ff5904' anchorSides='3' rotateNames='1' caption='Daily Reports' yAxisMinValue='0' yAxisMaxValue='1' xAxisName='Day-Month-Year' yAxisName='Percentage' decimalPrecision='2' numdivlines='8' numVdivlines='16' showhovercap='1' formatNumberScale='0'> <categories> <category name='1-Jun-2010' showName='1' /> <category name='2-Jun-2010' showName='1' /> <category name='3-Jun-2010' showName='1' /> <category name='4-Jun-2010' showName='1' /> <category name='5-Jun-2010' showName='1' /> <category name='6-Jun-2010' showName='1' /> <category name='7-Jun-2010' showName='1' /> <category name='8-Jun-2010' showName='1' /> <category name='9-Jun-2010' showName='1' /> <category name='10-Jun-2010' showName='1' /> <category name='11-Jun-2010' showName='1' /> <category name='12-Jun-2010' showName='1' /> <category name='13-Jun-2010' showName='1' /> <category name='14-Jun-2010' showName='1' /> <category name='15-Jun-2010' showName='1' /> <category name='Aggregate' showName='1' /></categories><dataset showValues='0' alpha='80' showAnchors='1' seriesname='Answered Percent' color='#f07979' lineThickness='2'><set name='Month' value='97.6'/><set name='Month' value='98.2'/><set name='Month' value='99.3'/><set name='Month' value='99.6'/><set name='Month' value='95.2'/><set name='Month' value='99.3'/><set name='Month' value='99.3'/><set name='Month' value='98.8'/><set name='Month' value='97.5'/><set name='Month' value='96.3'/><set name='Month' value='98.6'/><set name='Month' value='99.1'/><set name='Month' value='99.3'/><set name='Month' value='99.6'/><set name='Month' value='99.2'/><set name='Month' value='98.38'/></dataset></graph>")
swfobj.Execute_SetVariable("chartWidth", "750")
swfobj.Execute_SetVariable("chartHeight", "600")
swfobj.ImageWidth = 600
swfobj.ImageHeight = 500
Threading.Thread.Sleep(10000)
swfobj.Execute_GetImage()
swfobj.SaveToFile(Server.MapPath("dumps/images/" & filenm))
swfobj.Execute_End()
Call DownloadImage(filenm)
End Sub
Public Sub DownloadImage(ByVal fn As String)
Image1.ImageUrl = "~/dumps/images/" & fn
Dim fi As New FileInfo(Server.MapPath("dumps/images/" & fn))
HttpContext.Current.Response.Clear()
HttpContext.Current.Response.AddHeader("content-disposition", String.Format("attachment; filename={0}", fn))
HttpContext.Current.Response.ContentType = "image/" & DropDownList1.SelectedValue
Response.WriteFile(fi.FullName)
Response.Flush()
fi.Delete()
Response.End()
End Sub
这里animation='0'起到了很重要的作用，它指定了融合图表swf，它必须在没有动画的情况下加载。此外，如果我们将代码休眠 1 或 2 秒，则 swf 将被完全加载并将图像转换为选定的格式。
希望这对像我这样的人有用。:-)
于 2011-03-22T09:18:12.397 回答
-1
FusionCharts 团队开发了一个 .NET 程序集，可以让您在服务器上导出图表，而无需在浏览器中加载图表。
您可以通过在http://www.fusioncharts.com/contact/上写信给 FusionCharts 支持来获得它。
这仅适用于 FusionCharts v3 图表。
于 2011-06-03T09:23:08.290 回答