Add image using itextsharp - image

Question

I am trying to export data in PDF and now i try to add image in PDF using itext sharp i try this but this shows an error ..Is try below code but this shows an error when i add image in PDF file i successfully add text
Private Sub ExportGridToPDF()
Dim headerText As String = "file"
Response.ContentType = "application/pdf"
Response.AddHeader("content-disposition", "attachment;filename=GridViewExport.pdf")
Response.Cache.SetCacheability(HttpCacheability.NoCache)
Dim sw As New StringWriter()
Dim hw As New HtmlTextWriter(sw)
GridView1.AllowPaging = False
GridView1.DataBind()
GridView1.RenderControl(hw)
Dim sr As New StringReader(sw.ToString())
Dim pdfDoc As New iTextSharp.text.Document(iTextSharp.text.PageSize.A1, 10.0F, 10.0F, 10.0F, 0.0F)
Dim beginning As New iTextSharp.text.Chunk(headerText)
Dim p1 As New iTextSharp.text.Phrase(beginning)
Dim p2 As New iTextSharp.text.Phrase()
p2.Add(p1)
Dim p As New iTextSharp.text.Paragraph()
p.Add(p2)
Dim htmlparser As New HTMLWorker(pdfDoc)
PdfWriter.GetInstance(pdfDoc, Response.OutputStream)
pdfDoc.Open()
pdfDoc.Add(p)
Dim im As Image = iTextSharp.text.Image.GetInstance(imagepath + "/mikesdotnetting.tif")
pdfDoc.Add(im)
htmlparser.Parse(sr)
pdfDoc.Close()
Response.Write(pdfDoc)
Response.End()
End Sub
in this part
Dim im As Image = iTextSharp.text.Image.GetInstance(imagepath + "/mikesdotnetting.tif")
pdfDoc.Add(im)
and this shows an error in this line
Dim jpg As Image = iTextSharp.text.Image.GetInstance(New Uri(url))
error
**Value of type 'iTextSharp.text.Image' cannot be converted to 'System.Web.UI.WebControls.Image'.**
Any Solution?

Answer 1

You are using two classes named Image from a different package / namespace in the same code. That is ambiguous. You should use fully qualified names.
I'm not a .Net developer, but if this were Java, you'd do something like this:
Dim im As iTextSharp.text.Image = iTextSharp.text.Image.GetInstance(imagepath + "/mikesdotnetting.tif")
Your problem is caused by the fact that you create a variable jpg that is of type System.Web.UI.WebControls.Image, but you are assigning an object of type iTextSharp.text.Image to that variable. It is obvious that this doesn't work.
When you have two classes with the same name (Image) in two different namespaces System.Web.UI.WebControls and iTextSharp.text, you should avoid introducing ambiguities.
Read Resolving an ambiguous reference for more info.