c#爬虫保存互联网图片和文件

/// <summary>
/// 保存互联网图片
/// </summary>
/// <param name="url">文件原始路径"如：http://www.baidu.com/1.png"</param>
/// <param name="file">文件保存路径“如：D:\\ceshi\\1.png”</param>
/// <returns></returns>
public static bool DownFile(string url, string file)
{
    WebClient wc = new WebClient();
    bool reslut = true;
    try
    {
        wc.DownloadFile(url, file);
    }
    catch (Exception e)
    {
        reslut = false;
    }  
    return reslut;
}

winfrom

private void getfile_Click(object sender, EventArgs e)
{
         
    string fileURL=this.fileURL.Text.Trim();
    string[] type = fileURL.Split('.');
    int i = 1;
    string filePath = "D:\\ceshi\\1."+ type[type.Length - 1];
    DownFile(fileURL, filePath);
}

获取该文件的类型

打开文件流后，一定要关闭他

/// <summary>
        /// 保存互联网图片
        /// </summary>
        /// <param name="url">文件原始路径"如：http://www.baidu.com/1.png"</param>
        /// <param name="file">文件保存路径“如：D:\\ceshi\\1.png”</param>
        /// <returns></returns>
        public static bool DownFile(string url, string file) 
        {
            WebClient wc = new WebClient();
            bool reslut = true;
            string fileType = "";
            try
            {
                Stream wcOpen= wc.OpenRead(url); //打开流
                fileType = wc.ResponseHeaders["Content-Type"].Split('/')[1]; //获取类型
                file = file + "1." + fileType;
                wcOpen.Close(); //关闭流
               wc.DownloadFile(url, file);
               
            }
            catch (Exception e)
            {
                reslut = false;
            }  
            return reslut;
        }