User639567535 posted
I try to export data in PDF there is huge data so when i export .. I try below code
Private Sub ExportGridToPDF()
Dim GridView1 As New GridView
Using myMemoryStream As New MemoryStream()
Dim myDocument As New iTextSharp.text.Document(iTextSharp.text.PageSize.A1, 10.0F, 10.0F, 10.0F, 0.0F)
' Dim myDocument As New iTextSharp.text.Document()
Dim myPDFWriter As PdfWriter = PdfWriter.GetInstance(myDocument, myMemoryStream)
myDocument.Open()
' Add to content to your PDF here...
Dim sw As New StringWriter()
Dim hw As New HtmlTextWriter(sw)
GridView1.AllowPaging = False
GridView1.DataBind()
GridView1.RenderControl(hw)
' We're done adding stuff to our PDF.
myDocument.Add(hw)
myDocument.Close()
Dim content As Byte() = myMemoryStream.ToArray()
' Write out PDF from memory stream.
Using fs As FileStream = File.Create("Report_PDF.pdf")
fs.Write(content, 0, CInt(content.Length))
End Using
End Using
End Sub
when i run this shows an error
System.InvalidCastException: Unable to cast object of type 'System.Web.UI.HtmlTextWriter' to type 'iTextSharp.text.IElement'.
on this line
myDocument.Add(hw)
I use memory stream because of huge data when i use code without memory stream then shows an error Out of Memory exception so i use memory stream and now this shows different error
