C# 0 The Complete Reference

GetResponse( )

 on the 

WebRequest

 object. After 

the request has been sent, 

GetResponse( )

 waits for a response. Once a response has been 

received, 

GetResponse( )

 returns a 

WebResponse

 object that encapsulates the response. 

This object is assigned to 

resp

. Since, in this case, the response uses the HTTP protocol, the 

result is cast to 

HttpWebResponse

. Among other things, the response contains a stream that 

can be used to read data from the URI.

Next, an input stream is obtained by calling 

GetResponseStream( )

 on 

resp

. This is a 

standard 

Stream

 object, having all of the attributes and features of any other input stream. 

A reference to the stream is assigned to 

istrm

. Using 

istrm

, the data at the specified URI can 

be read in the same way that a file is read.

Next, the program reads the data from McGraw-Hill.com and displays it on the screen. 

Because there is a lot of information, the display pauses every 400 characters and waits for 

you to press 

ENTER

. This way the first part of the information won’t simply scroll off the 

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screen. Notice that the characters are read using 

ReadByte( )

. Recall that this method returns 

the next byte from the input stream as an