в 15:31, 26 мая 2010

2010-05-26T15:31:53Z

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2010-05-26T12:20:33Z

1 версия

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==Download Data==

<source lang="csharp">using System;
using System.Net;
using System.Text;
class MainClass
{
public static void Main(string[] argv)
{
WebClient wc = new WebClient();
byte[] response = wc.DownloadData("http://www.nfex.ru");
Console.WriteLine(Encoding.ASCII.GetString(response));
}
}</source>

==Download File==

<source lang="csharp">using System;
using System.Net;
class MainClass
{
public static void Main(string[] argv)
{
WebClient wc = new WebClient();
string filename = "index.html";
wc.DownloadFile("http://www.nfex.ru", filename);
Console.WriteLine("file downloaded");
}
}</source>

==Download HTM files==

<source lang="csharp">using System;
using System.IO;
using System.Net;
using System.Text.RegularExpressions;
class MainClass
{
private static void Main()
{
string remoteUri = "http://www.nfex.ru";

WebClient client = new WebClient();
string str = client.DownloadString(remoteUri);
MatchCollection matches = Regex.Matches(str,@"http\S+[^-,;:?]\.htm");

foreach(Match match in matches)
{
foreach(Group grp in match.Groups)
{
string file = grp.Value.Substring(grp.Value.LastIndexOf("/")+1);
try
{
Console.WriteLine("Downloading {0} to file {1}",
grp.Value, file);
//client.DownloadFile(new Uri(grp.Value), file);
}
catch
{
Console.WriteLine("Failed to download {0}", grp.Value);
}
}
}
}
}</source>
<pre class=codeResult>Downloading http://www.nfex.ru/Code/Java/CatalogJava.htm to file CatalogJava.htm
Downloading http://www.nfex.ru/Tutorial/Java/CatalogJava.htm to file CatalogJava.htm
Downloading http://www.nfex.ru/Article/Java/CatalogJava.htm to file CatalogJava.htm
Downloading http://www.nfex.ru/Product/Java/CatalogJava.htm to file CatalogJava.htm</pre>

==Download string from a website using the WebClient==

<source lang="csharp">using System;
using System.IO;
using System.Net;
using System.Text.RegularExpressions;
class MainClass
{
private static void Main()
{
string remoteUri = "http://www.nfex.ru";

WebClient client = new WebClient();
Console.WriteLine("Downloading {0}", remoteUri);
string str = client.DownloadString(remoteUri);
Console.WriteLine(str);
}
}</source>
<pre class=codeResult>Downloading http://www.nfex.ru
<HTML>
<HEAD>
Java examples (example source code) Organized by topic </title>
...
...</pre>

==Open/Read Test==

<source lang="csharp">using System;
using System.IO;
using System.Net;
class MainClass
{
public static void Main(string[] argv)
{
WebClient wc = new WebClient();
string response;
Stream strm = wc.OpenRead("http://www.nfex.ru");
StreamReader sr = new StreamReader(strm);
while(sr.Peek() > -1)
{
response = sr.ReadLine();
Console.WriteLine(response);
}
sr.Close();
}
}</source>

==Open/Write Test==

<source lang="csharp">using System;
using System.IO;
using System.Net;
class MainClass
{
public static void Main(string[] argv)
{
WebClient wc = new WebClient();
string data = "Data up upload to server";
Stream strm = wc.OpenWrite("http://www.nfex.ru");
StreamWriter sw = new StreamWriter(strm);
sw.WriteLine(data);
sw.Close();
strm.Close();
}
}</source>

==Response Headers==

<source lang="csharp">using System;
using System.Collections.Specialized;
using System.Net;
class MainClass
{
public static void Main(string[] argv)
{
WebClient wc = new WebClient();
byte[] response = wc.DownloadData("http://www.jva2s.ru");
WebHeaderCollection whc = wc.ResponseHeaders;
Console.WriteLine("header count = {0}", whc.Count);
for (int i = 0; i < whc.Count; i++)
{
Console.WriteLine(whc.GetKey(i) + " = " + whc.Get(i));
}
}
}</source>

==Set download string for WebClient==

<source lang="csharp">using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;

class Program
{
static void Main()
{
WebClient client = new WebClient();
client.BaseAddress = "http://www.microsoft.ru";
string data = client.DownloadString("Office");
Console.WriteLine(data);
}
}</source>

==Upload Data==

<source lang="csharp">using System;
using System.Net;
using System.Text;
class MainClass
{
public static void Main(string[] argv)
{
WebClient wc = new WebClient();
string data = "This is the data to post";
byte[] dataarray = Encoding.ASCII.GetBytes(data);
wc.UploadData("youraddress", dataarray);
}
}</source>

==Upload Values==

<source lang="csharp">using System;
using System.Collections.Specialized;
using System.Net;
using System.Text;
class MainClass
{
public static void Main(string[] argv)
{
WebClient wc = new WebClient();
string uri = "http://localhost/testform.aspx";
NameValueCollection nvc = new NameValueCollection();
nvc.Add("lastname", "B");
nvc.Add("firstname", "A");
byte[] response = wc.UploadValues(uri, nvc);
Console.WriteLine(Encoding.ASCII.GetString(response));
}
}</source>

==Use WebClient to download information into a file==

<source lang="csharp">using System;
using System.Net;
using System.IO;

class MainClass {
public static void Main() {
WebClient user = new WebClient();
string uri = "http://www.nfex.ru";
string fname = "data.txt";

try {
Console.WriteLine("Downloading data from " + uri + " to " + fname);
user.DownloadFile(uri, fname);
} catch (WebException exc) {
Console.WriteLine(exc);
}

Console.WriteLine("Download complete.");
}
}</source>
<pre class=codeResult>Downloading data from http://www.nfex.ru to data.txt
Download complete.</pre>

==Use WebClient to read website==

<source lang="csharp">using System;
using System.Net;
using System.Text;
using System.IO;
class MainClass
{
[STAThread]
static void Main(string[] args)
{
WebClient MyClient = new WebClient();
Stream MyStream = MyClient.OpenRead("http://www.nfex.ru");
StreamReader MyReader = new StreamReader(MyStream);
Console.WriteLine(MyReader.ReadLine());
MyStream.Close();
}
}</source>

==Web login==

<source lang="csharp">using System;
using System.Net;
using System.Text;
class MainClass
{
public static void Main()
{
WebClient wc = new WebClient();
NetworkCredential nc = new NetworkCredential("usr", "mypassword");
wc.Credentials = nc;
byte[] response = wc.DownloadData("http://localhost/testlogin");
Console.WriteLine(Encoding.ASCII.GetString(response));
}
}</source>

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Csharp/CSharp Tutorial/Network/WebClient - История изменений

в 15:31, 26 мая 2010

Admin: 1 версия