我想使用telerik控件將radchart導出爲pdf格式

Question

我使用此代碼得到此圖表，並且我想將此圖表導出爲pdf。

private void InitializeGraph(DataTable poDt) 
{ 
    Telerik.Charting.ChartSeries chartseries = new Telerik.Charting.ChartSeries(); 
    try 
    { 

     chartseries.Type = Telerik.Charting.ChartSeriesType.Bar; 
     Telerik.Charting.ChartSeriesItem csItem; 
     RadChart1.PlotArea.XAxis.AutoScale = true; 

     RadChart1.PlotArea.XAxis.AddRange(1, poDt.Rows.Count, 1); 
     RadChart1.PlotArea.XAxis.AutoShrink = true; 

     for (int iRow = 0; iRow < poDt.Rows.Count; iRow++) 
     { 
     chartseries = new Telerik.Charting.ChartSeries(); 
     chartseries.Type = Telerik.Charting.ChartSeriesType.Bar; 
     chartseries.Name = poDt.Rows[iRow]["Name"].ToString().Trim(); 

     csItem = new Telerik.Charting.ChartSeriesItem(); 
     csItem.Name = poDt.Rows[iRow]["Name"].ToString(); 
     csItem.Label.TextBlock.Text = poDt.Rows[iRow]["Value"].ToString();//+ "(" + poDt.Rows[iRow]["Percentage"].ToString() + "%)"; 
     RadChart1.PlotArea.XAxis.Appearance.TextAppearance.AutoTextWrap = Telerik.Charting.Styles.AutoTextWrap.True; 

     csItem.YValue = Int32.Parse(poDt.Rows[iRow]["Value"].ToString()); 

     RadChart1.PlotArea.XAxis.AutoShrink = false; 
     chartseries.AddItem(csItem); 
     RadChart1.Series.Add(chartseries); 
     } 


     RadChart1.PlotArea.XAxis.AutoShrink = true; 

     RadChart1.PlotArea.Appearance.Border.Visible = false; 
     RadChart1.Appearance.Border.Visible = false; 
     RadChart1.PlotArea.YAxis.IsLogarithmic = true; 
     RadChart1.PlotArea.YAxis.AutoScale = true; 
     RadChart1.PlotArea.YAxis.Appearance.ValueFormat = Telerik.Charting.Styles.ChartValueFormat.Number; 
     RadChart1.Appearance.BarWidthPercent = 50; 

     RadChart1.Chart.Appearance.FillStyle.MainColor = System.Drawing.Color.Red; 
     RadChart1.Chart.Appearance.FillStyle.MainColor = System.Drawing.Color.Transparent; 
     RadChart1.Legend.Appearance.FillStyle.MainColor = System.Drawing.Color.Transparent; 

     } 
     catch (Exception Ex) 
     { 
      //throw; 
     } 
     finally 
     { 
      poDt.Clear(); 
      poDt = null; 
      chartseries = null; 
     } 
    } 

Answer 1

你好，我得到了這個問題，我用iTextSharp的和它的做工精細

無效ExportToPdf（） {

 DataTable poDt = new DataTable(); 
     InitializeGraph(poDt); 

     RadChart1.Save(Server.MapPath("~/images/Chart.png"), System.Drawing.Imaging.ImageFormat.Png); 
     Document document = new Document(PageSize.LETTER, 72, 72, 82, 72); 
     MemoryStream msReport = new MemoryStream(); 

     try 
     { 

      PdfWriter writer = PdfWriter.GetInstance(document, msReport); 
      document.AddAuthor("Test"); 
      document.AddSubject("Export to PDF"); 
      document.Open(); 
      Chunk c = new Chunk("Export chart to PDF", FontFactory.GetFont("VERDANA", 15)); 
      Paragraph p = new Paragraph(); 
      p.Alignment = Element.ALIGN_CENTER; 
      iTextSharp.text.Image hImage; 
      hImage = iTextSharp.text.Image.GetInstance(MapPath("~/images/Chart.png")); 

      float NewWidth = 500; 
      float MaxHeight = 400; 

      if (hImage.Width <= NewWidth) { NewWidth = hImage.Width; } float NewHeight = hImage.Height * NewWidth/hImage.Width; if (NewHeight > MaxHeight) 
      { 
       NewWidth = hImage.Width * MaxHeight/hImage.Height; 
       NewHeight = MaxHeight; 
      } 

      float ratio = hImage.Width/hImage.Height; 
      hImage.ScaleAbsolute(NewWidth, NewHeight); 
      document.Add(p); 
      document.Add(hImage); 
      document.Close(); 

      Response.AddHeader("Content-type", "application/pdf"); 
      Response.AddHeader("Content-Disposition", "attachment; filename=chart.pdf"); 
      Response.OutputStream.Write(msReport.GetBuffer(), 0, msReport.GetBuffer().Length); 

     } 
     catch (System.Threading.ThreadAbortException ex) 
     { 
      throw new Exception("Error occured: " + ex); 
     } 

    } 

保護無效Export_To_Pdf_Click答案（對象發件人，EventArgs的） {0} {0} {0} {0} ExportToPdf（）;

}