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Represents ASCII encoding. This encoding encodes Unicode characters as single 7-bit ASCII characters. Represents Unicode encoding. This scheme encodes Unicode characters as 2 bytes. Represents UTF-7 encoding. The characters are stored in 7-bit format. Represents UTF-8 encoding. The characters are stored in 8-bit format. This is the default scheme.

Figure 14-14. It s easy to install Skype under Ubuntu, and it works almost exactly as it does under Windows or Macintosh.

'create data reader Dim rdr As SqlDataReader = cmd.ExecuteReader 'get column names Console.WriteLine("Column Name:{0} {1}", _ rdr.GetName(0).PadRight(20), _ rdr.GetName(1)) 'get column data types Console.WriteLine("Data Type:{0} {1}", _ rdr.GetDataTypeName(0).PadRight(20), _ rdr.GetDataTypeName(1)) Console.WriteLine() 'loop through result set While (rdr.Read) 'get column values for all rows Console.WriteLine("{0} {1}", _ rdr.GetString(0).ToString().PadRight(25), _ rdr.GetString(1)) End While 'get number of columns Console.WriteLine() Console.WriteLine("Number of columns in a row: {0}", _ rdr.FieldCount) 'get info about each column Console.WriteLine("'{0}' is at index {1} " & _ "and its type is: {2}", _ rdr.GetName(0), _ rdr.GetOrdinal("contactname"), _ rdr.GetFieldType(0)) Console.WriteLine("'{0}' is at index {1} " & _ "and its type is: {2}", _ rdr.GetName(1), _ rdr.GetOrdinal("contacttitle"), _ rdr.GetFieldType(1)) 'close data reader rdr.Close() Catch e As Exception Console.WriteLine("Error Occurred:" & e.ToString)

After the software is installed, click Applications Internet Skype to start it. Using Skype under Linux is very similar to using it under Windows or Macintosh. You ll find excellent documentation at www.skype.com.

If you open the XML document that we created in our previous example in Notepad, it will look like Figure 3-11.

Tip To configure your audio input device (e.g., microphone), right-click the Speaker icon at the top right of the desktop and select Open Volume Control. Then click and drag the Microphone slider as necessary. You may need to unmute the input by removing the red cross next to the speaker icon below the Microphone slider.

Ekiga, an open source alternative to Skype, offers a similar feature set. It can be installed using the Ubuntu Software Center and is available from Applications Internet Ekiga Softphone. When the software is launched for the first time, you ll be prompted to create an Ekiga.net account, which will give you a SIP address (the VoIP equivalent of an e-mail address) and an option to purchase call-out credit. After you ve signed into the service, it works in a similar way to Skype, with a buddy list and, as shown in Figure 14-15, a standard numerical dial pad for calling land lines or mobile numbers. Ekiga s integration with the Ubuntu desktop is very good for example, you can receive alerts in the notification area if one of your contacts makes a call to you.

Finally ' Close connection conn.Close() End Try End Sub End Module 3. Make ResultSetInfo the startup project, and run it by pressing Ctrl+F5. You should see the results in Figure 12-4.

Figure 3-11. XML document without any formatting What s the problem Well, there is no problem as far as the document being well formed. It does follow all the rules of XML grammar. However, the document lacks proper formatting. Such documents are difficult for the human eye to read. Fortunately, the XmlTextWriter class provides several formatting options that help you create well-formatted documents. To see how these formatting options work, you need to modify the previous application so it looks like the one shown in Figure 3-12.

Summary

This chapter has been a whistle-stop tour of Evolution s main features. You ve looked at e-mail creation and organization, contacts management, working with the appointments calendar, and editing the task list and memos. Evolution is a powerful program. Be sure to take a look at its help documentation (Help Contents) to learn more about it. This chapter also discussed the instant messaging client and how it integrates with the Me menu. The next chapter will go into greater detail about this new feature and what can you do with it.