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The choice between POP3 and POP3_SSL is governed by whether your e-mail provider offers or, in this day and age, even requires that you connect over an encrypted connection. Consult 6 for more information about SSL, but the general guideline should be to use it whenever it is at all feasible for you to do so. Listing 14 1 uses the foregoing steps to log in to a remote POP server. Once connected, it calls stat(), which returns a simple tuple giving the number of messages in the mailbox and the messages total size. Finally, the program calls quit(), which closes the POP connection. Listing 14 1. A Very Simple POP Session #!/usr/bin/env python # POP connection and authentication - 14 - popconn.py import getpass, poplib, sys if len(sys.argv) != 3: print 'usage: %s hostname user' % sys.argv[0] exit(2) hostname, user = sys.argv[1:] passwd = getpass.getpass() p = poplib.POP3_SSL(hostname) # or "POP3" if SSL is not supported try: p.user(user) p.pass_(passwd) except poplib.error_proto, e: print "Login failed:", e else: status = p.stat() print "You have %d messages totaling %d bytes" % status finally: p.quit() You can test this program if you have a POP account somewhere. Most people do even large webmail services like GMail provide POP as an alternate means of checking your mailbox. Run the preceding program, giving it two command-line arguments: the hostname of your POP server, and your username. If you do not know this information, contact your Internet provider or network administrator; note that on some services your username will be a plain string (like guido), whereas on others it will be your full e-mail address (guido@example.com). The program will then prompt you for your password. Finally, it will display the mailbox status, without touching or altering any of your mail. c# compress pdf size 7 ways to compress PDF files in C# , VB.NET | Syncfusion Blogs
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28 Feb 2018 ... There is no doubt that the PDF file which contains plenty of images will ... For the reasons above, two methods to compress images in PDF ... This example provides a standard client-side data control that allows you to navigate through a data source. It displays the contents of the fields for the current record and provides read and write binding between them. Therefore, when you navigate to a field, you can edit that field, and your edit will automatically update the underlying dataset. You can see it in action in Figure 8-4. The < and > buttons will move you forward and backward through the dataset. If you change an item either within the name field or within the description field, the dirty flag will be set. This enables the Save button so that the changes can be written to the database, as shown in Figure 8-5. how to edit pdf file in asp net c#, how to convert pdf to word using asp.net c#, how to convert pdf to jpg in c# windows application, convert tiff to pdf c# itextsharp, c# docx to pdf free, convert image to pdf c# itextsharp c# pdfsharp compression C# Compress PDF SDK: Compress, shrink PDF file size in C# .net ...
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Spire. PDF allows us to compress PDF document in the following two ways: Compressing content; Compressing image. Compressing content. In Spire. PDF , we ... Caution! While this program does not alter any messages, some POP servers will nonetheless alter mailbox flags simply because you connected. Running the examples in this chapter against a live mailbox could cause you to lose information about which messages are read, unread, new, or old. Unfortunately, that behavior is serverdependent, and beyond the control of POP clients. I strongly recommend running these examples against a test mailbox rather than your live mailbox! Although these additional requirements aren t part of the business process, any system that facilitates this process must provide these features. The workflow doesn t provide most of these features; instead, the host application provides them, in this case an ASP.NET application. Figure 10-1 displays a flow chart showing the business process flow (it doesn t include the non-business process requirements listed earlier). c# pdfsharp compression how to optimize pdf using c# programming. - CodeProject
PDF_VERSION_1_5); writer. CompressionLevel = PdfStream. BEST_COMPRESSION ; ... SetFullCompression (); stamper.Close();. Permalink. how to compress pdf file size in c# Windows 8 How to Compress PDF in C# sample in C# for Visual ...
8 Jun 2018 ... Developers can compress PDF file size in C# . Reduce size with image and content in PDF, and be able to delete annotations and metadata in ... Here is how you might run the program: $ ./popconn.py pop.example.com guido Password: (type your password) You have 3 messages totaling 5675 bytes If you see output like this, then your first POP conversation has taken place successfully! When POP servers do not support SSL to protect your connection from snooping, they sometimes at least support an alternate authentication protocol called APOP, which uses a challenge-response scheme to assure that your password is not sent in the clear. (But all of your e-mail will still be visible to any third party watching the packets go by!) The Python Standard Library makes this very easy to attempt: just call the apop() method, then fall back to basic authentication if the POP server you are talking to does not understand. To use APOP but fall back to plain authentication, you could use a stanza like the one shown in Listing 14 2 inside your POP program (like Listing 14 1). Listing 14 2. Attempting APOP and Falling Back print "Attempting APOP authentication..." try: p.apop(user, passwd) except poplib.error_proto: print "Attempting standard authentication..." try: p.user(user) p.pass_(passwd) except poplib.error_proto, e: print "Login failed:", e sys.exit(1) Similarly, the * button, which adds a new row at the end of the dataset, and the X button, which deletes the current row, will enable the dirty flag and thus the Save button to commit the changes. Finally, the Refresh button will reload the data from the underlying dataset, which will lose all unsaved changes. The back-end data source is the same web service as you used in the previous example, so you ll now look at the client-side code for this to see how it is implemented. The UI is implemented using the following HTML: <!-- First Section --> <div id="detailsView"></div> c# reduce pdf file size itextsharp Compress PDF to Smaller Size (i.e 1MB to 300kb) in C# - Stack Overflow
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