how to edit pdf file in asp net c#

how to edit pdf file in asp.net c#

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From: This identifies the message sender. It can also, in the absence of a Reply-to header, be used as the destination when the reader clicks the e-mail client s Reply button. Reply-To: This sets an alternative address for replies, in case they should go to someone besides the sender named in the From header. Subject: This is a short several-word description of the e-mail s purpose, used by most clients when displaying whole mailboxes full of e-mail messages. Date: This is a header that can be used to sort a mailbox in the order in which emails arrived. Message-ID and In-Reply-To: Each ID uniquely identifies a message, and these IDs are then used in e-mail replies to specify exactly which message was being replied to. This can help sophisticated mail readers perform threading, arranging messages so that replies are grouped directly beneath the messages to which they reply.

will be an asynchronous transaction. Next, it specifies the dotheupdate function to handle the readystate changes on the XMLHttpRequest object. The dotheupdate function checks to see whether the readyState is 4, indicating that the process is complete, and if it is, it updates the TOT field with the returned value from the XMLHttpRequest object. To get this application to work, add a new C# web form to the project, and keep the default name of WebForm2.aspx. In the page designer, delete all the default HTML so that the page contains just the ASPX declaration: <%@ Page language="c#" Codebehind="WebForm2.aspx.cs" AutoEventWireup="false" Inherits="Atlas1_1.WebForm2" %> Then, add the following code to the C# code file: private void Page_Load(object sender, System.EventArgs e) { int a = 0; int b = 0; if (Request.QueryString["A"] != null) { a = Convert.ToInt16(Request.QueryString["A"].ToString()); } if (Request.QueryString["B"] != null) { b = Convert.ToInt16(Request.QueryString["B"].ToString()); } Response.Write(a+b); } This handles the request from WebForm1.aspx, getting the values of A and B, and writes them back to the response buffer. The XMLHttpRequest object within WebForm1.aspx then handles the communication and asynchronously updates the Returned Total box.

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There are also a whole set of MIME headers, which help the mail reader display the message in the proper language, with proper formatting, and which help e-mail clients process attachments correctly; we will learn more about them shortly.

Now that you know what a traditional e-mail looks like, how can we generate one in Python without having to implement the formatting details ourselves The answer is to use the modules within the powerful email package. As our first example, Listing 12 2 shows a program that generates a simple message. Note that when you generate messages this way, manually setting the payload with the Message class, you should limit yourself to using plain 7-bit ASCII text. Listing 12 2. Creating an E-mail Message #!/usr/bin/env python # Foundations of Python Network Programming - 12 - trad_gen_simple.py # Traditional Message Generation, Simple # This program requires Python 2.5 or above from email.message import Message text = """Hello, This is a test message from 12. -- Anonymous""" msg = Message() msg['To'] = 'recipient@example.com' msg['From'] = 'Test Sender <sender@example.com>' msg['Subject'] = 'Test Message, 12' msg.set_payload(text) print msg.as_string() I hope you enjoy it!

Figure 8-5. Name and Description properties of the new activity This activity needs to accept two parameters. The first is the connection string to use, and the second is the SQL statement to execute. This activity also needs to return two parameters. The first is for success or failure, and the other is a number. You can use this number when inserting a record to show the ID of the newly inserted record. If this doesn t apply, just add a 0. The next step is to define the properties. To do this, view the code of the ExecuteSQL activity, and you ll see the class structure. Add the property code so the class looks like the following: Public Class ExecuteSQL Inherits System.Workflow.ComponentModel.Activity Public Shared ConnectionStringProperty As DependencyProperty = DependencyProperty.Register("ConnectionString", GetType(String), GetType(ExecuteSQL) , New PropertyMetadata("ConnectionString")) Public Shared SQLStatementProperty As DependencyProperty = DependencyProperty.Register("SQLStatement", GetType(String), GetType(ExecuteSQL), New PropertyMetadata("SQL Statement")) Public Shared StatusProperty As DependencyProperty = DependencyProperty.Register("Status", GetType(Boolean), GetType(ExecuteSQL)) Public Shared NewIDProperty As DependencyProperty = DependencyProperty.Register("NewID", GetType(Integer), GetType(ExecuteSQL)) End Class The Status and NewID properties should be read-only because they re return parameters. Create the necessary property statements as follows:

Summary

The program is simple It creates a Message object, sets the headers and body, and prints the result When you run this program, you will get a nice formatted message with proper headers The output is suitable for transmission right away! You can see the result in Listing 12 3 Listing 12 3 Printing the E-mail to the Screen $ /trad_gen_simplepy To: recipient@examplecom From: Test Sender <sender@examplecom> Subject: Test Message, 12 Hello, This is a test message from 12 -- Anonymous While technically correct, this message is actually a bit deficient when it comes to providing enough headers to really function in the modern world For one thing, most e-mails should have a Date header, in a format specific to e-mail messages Python provides an emailutilsformatdate() routine that will generate dates in the right format You should add a Message-ID header to messages.

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