C#--简单文件下载器

class Program
{
static void Main(string[] args)
{
//创建一个要下载的路径
WebRequest req = WebRequest.Create("http://static.cnblogs.com/images/adminlogo.gif");
//响应图片的信息
using(WebResponse res = req.GetResponse())
//拿到图片的流
using(Stream InStream = res.GetResponseStream())
//拷贝到本地路径
using(Stream OutStream = new FileStream(@"C:\Users\Administrator\Desktop\C#OOP练习\2.png",FileMode.Create))
{
Copy(InStream, OutStream);
}
Console.WriteLine("拷贝完成!");
}

//封装Copy方法
static void Copy(Stream InStream, Stream OutStream, int Size)
{
byte[]bytes = new byte[Size];
int len = 0;
while((len = InStream.Read(bytes,0,bytes.Length))>0)
{
OutStream.Write(bytes, 0, len);
}
}
//Copy方法重载
static void Copy(Stream InStream,Stream OutStream)
{
Copy(InStream,OutStream,1024*1024);
}
}

class Program
{
static void Main(string[] args)
{
//创建一个要下载的路径
WebRequest req = WebRequest.Create("http://static.cnblogs.com/images/adminlogo.gif");
//响应图片的信息
using(WebResponse res = req.GetResponse())
//拿到图片的流
using(Stream InStream = res.GetResponseStream())
//拷贝到本地路径
using(Stream OutStream = new FileStream(@"C:\Users\Administrator\Desktop\C#OOP练习\2.png",FileMode.Create))
{
InStream.CopyTo(OutStream);
}
Console.WriteLine("拷贝完成!");
}

//封装Copy方法
static void Copy(Stream InStream, Stream OutStream, int Size)
{
byte[]bytes = new byte[Size];
int len = 0;
while((len = InStream.Read(bytes,0,bytes.Length))>0)
{
OutStream.Write(bytes, 0, len);
}
}
//Copy方法重载
static void Copy(Stream InStream,Stream OutStream)
{
Copy(InStream,OutStream,1024*1024);
}
}