C#实现HTTP下载文件的方法

这篇文章主要介绍了C#实现HTTP下载文件的方法,包括了HTTP通信的创建、本地文件的写入等,非常具有实用价值,需要的朋友可以参考下

/// <summary>

/// Http下载文件

/// </summary>

public static string HttpDownloadFile(string url, string path)

{
    
    

    // 设置参数

    HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
    //发送请求并获取相应回应数据

    HttpWebResponse response = request.GetResponse() as HttpWebResponse;

    //直到request.GetResponse()程序才开始向目标网页发送Post请求

    Stream responseStream = response.GetResponseStream();
    //创建本地文件写入流

    Stream stream = new FileStream(path, FileMode.Create);
    byte[] bArr = new byte[1024];

    int size = responseStream.Read(bArr, 0, (int)bArr.Length);

    while (size > 0)

    {
    
    

        stream.Write(bArr, 0, size);

        size = responseStream.Read(bArr, 0, (int)bArr.Length);

    }

    stream.Close();

    responseStream.Close();

    return path;

}