I have a webform where starting from an image .jpg , the complete with data of the transaction in question using itextsharp and I open it with a windows.open .
The problem is that when I click on the download icon, the form is downloaded to me as .aspx and I would need it as .pdf . How could I achieve this?
You must return the file in the Response specifying the download name and the content type:
string rutaArchivo= "c:/archivos/reporte.pdf";
Response.ContentType = "application/pdf";
Response.AddHeader("Content-Disposition", // especificando que lo descargue como pdf
string.Format("attachment; filename={0}", System.IO.Path.GetFileName( nombreArchivo)));
Response.TransmitFile(rutaArchivo);
Response.End();