using System;
using System.Net;
using System.IO;
using System.Drawing;
using System.Windows.Forms;
public class MainClass {
public static void Main() {
string picUri = "http://international.us.server12.fileserver.kutayzorlu.com/files/download/2017/01/Hex_RGB4_uuid-fa046b6c-fa2c-4f3e-838c-80ed56faee5c_crc-0.jpg";
string htmlUri = "http://www.apress.com";
WebRequest requestPic = WebRequest.Create(picUri);
WebRequest requestHtml = WebRequest.Create(htmlUri);
WebResponse responsePic = requestPic.GetResponse();
WebResponse responseHtml = requestHtml.GetResponse();
Image img = Image.FromStream(responsePic.GetResponseStream());
using (StreamReader r = new StreamReader(responseHtml.GetResponseStream())) {
Console.WriteLine(r.ReadToEnd());
}
}
}
Month: February 2011
Output webpage content
using System.Net;
using System;
using System.IO;
public class WebPagesApp {
[STAThread]
public static void Main(string[] args) {
string s = "http://www.microsoft.com";
Uri uri = new Uri(s);
WebRequest req = WebRequest.Create(uri);
WebResponse resp = req.GetResponse();
Stream str = resp.GetResponseStream();
StreamReader sr = new StreamReader(str);
string t = sr.ReadToEnd();
int i = t.IndexOf("<HEAD>");
int j = t.IndexOf("</HEAD>");
string u = t.Substring(i, j);
Console.WriteLine("{0}", u);
}
}
Download a web page in a thread
using System;
using System.Net;
using System.Threading;
class ThreadTest {
static void Main() {
new Thread(Download).Start();
Console.WriteLine("download's happening!");
Console.ReadLine();
}
static void Download() {
using (WebClient wc = new WebClient())
try {
wc.Proxy = null;
wc.DownloadFile("http://www.google.com", "index.html");
Console.WriteLine("Finished!");
} catch (Exception ex) {
}
}
}
Build the DownloadString
using System;
using System.IO;
using System.Net;
using System.Text.RegularExpressions;
class MainClass {
private static void Main() {
string remoteUri = "http://www.apress.com";
WebClient client = new WebClient();
string str = client.DownloadString(remoteUri);
MatchCollection matches = Regex.Matches(str, @"httpS+[^-,;:?].gif");
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);
}
}
}
}
}
Set the BaseAddress for WebClient
using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
class Program {
static void Main(string[] args) {
WebClient client = new WebClient();
client.BaseAddress = "http://www.microsoft.com";
string data = client.DownloadString("Office");
Console.WriteLine(data);
}
}
Web Client Open Read Test
using System;
using System.IO;
using System.Net;
public class OpenReadTest
{
public static void Main(string[] argv)
{
WebClient wc = new WebClient();
string response;
Stream strm = wc.OpenRead(argv[0]);
StreamReader sr = new StreamReader(strm);
while(sr.Peek() > -1)
{
response = sr.ReadLine();
Console.WriteLine(response);
}
sr.Close();
}
}
Web Client Open Write Test
using System;
using System.IO;
using System.Net;
public class OpenWriteTest
{
public static void Main(string[] argv)
{
WebClient wc = new WebClient();
string data = "Data up upload to server";
Stream strm = wc.OpenWrite(argv[0]);
StreamWriter sw = new StreamWriter(strm);
sw.WriteLine(data);
sw.Close();
strm.Close();
}
}

