我有用于打印使用iTextSharp.dll(PDF产生LIB)使用如何打印ajaxtoolkit饼图(pdf格式)?
命名空间正常代码扇形图:
using iTextSharp.text;
using iTextSharp.text.pdf;
using System.IO;
using System.Web.UI.DataVisualization.Charting;
代码:对AJAX
Document pdfDoc = new Document(PageSize.A4, 10f, 10f, 10f, 0f);
PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
pdfDoc.Open();
using (MemoryStream stream = new MemoryStream())
{
PieChart1.SaveImage(stream, ChartImageFormat.Png); //error line
iTextSharp.text.Image chartImage = iTextSharp.text.Image.GetInstance(stream.GetBuffer());
chartImage.ScalePercent(75f);
pdfDoc.Add(chartImage);
pdfDoc.Close();
Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition", "attachment;filename=Chart.pdf");
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.Write(pdfDoc);
Response.End();
}
但这代码这么想的工作饼图,它显示错误:
Error 1 'AjaxControlToolkit.PieChart' does not contain a definition for 'SaveImage' and no extension method 'SaveImage' accepting a first argument of type 'AjaxControlToolkit.PieChart' could be found (are you missing a using directive or an assembly reference?)
也我有没有其他的方式,如从JavaScript打印饼图的div? 或任何其他代码示例/参考?