C # Processing of data submitted to the server and returned

1: Create a WebRequest object using System.Net.WebRequest's Create method :

System.Net.WebRequest objwebrequest=system.net.webrequest.create (URLP);

Exception type:

The request scheme specified in Notsupportedexception:requesturi is not registered.

Argumentnullexception:requesturi is a null reference (Nothing in Visual Basic).

The SecurityException caller does not have permission to connect to the requested URI or to the URI on which the request is redirected.

2: Pre-authentication of the request, if there is no clear requirement, this item can be empty.

Objwebrequest.credentials=credentialcache.defaultcredentials;

If you need to follow a special authentication protocol, you need to cast to the HttpWebRequest type:

((HttpWebRequest) objwebrequest). Useragent= "5do8";

3: Specify the type of protocol:

Objwebrequest.method= "POST";

Can be post and get mode.

4: Send the transmission data length (if no display transmission, can also send), if set this entry, the data sent must exactly meet this value.

Objwebrequest.contentlength=stringdata.tochararray (). Length;

5: Set the MIME content type of the incoming request :

ObjWebRequest.ContentType="application/x-www-form-urlencoded";//Post
ObjWebRequest.ContentType="text/xml";//SOAP

6: Use the GetRequestStream () method to get the handle of the sent stream:

System.IO.Stream Datastream=objwebrequest.getrequeststream ();

7: Send the data :

Datastream.write (bytearray,0,bytearray.length);

Note: ByteArray is a byte array, and its fetch can be:

Byte[] Bytearray=utf8encoding.getbytes (DATAP);