C#方法下载网络图片

逃离我推掉我的手 2022-04-12 10:22 157阅读 0赞

/// <summary>
            /// 下载网络图片 
            /// </summary>
            /// <param name="PicSourceUrl">图片的网络地址</param>
            /// <param name="filePath">图片保存在本地的路径（需要加上图片的保存名称 如：D:\Images\1.jpg）</param>
            /// <returns></returns>
            public static bool DownPic(string PicSourceUrl,string filePath)
            {
                WebRequest request = WebRequest.Create(PicSourceUrl);
                WebResponse response = request.GetResponse();
                Stream reader = response.GetResponseStream();
                FileStream writer = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.Write);
                try
                {
                    byte[] buff = new byte[512];
                    int c = 0; //实际读取的字节数
                    while ((c = reader.Read(buff, 0, buff.Length)) > 0)
                    {
                        writer.Write(buff, 0, c);
                    }
                    writer.Close();
                    writer.Dispose();
                    reader.Close();
                    reader.Dispose();
                    response.Close();
                }
                catch (Exception ex)
                {
                    return false;
                }
                finally
                {
                    if (writer!=null)
                    {
                        writer.Close();
                        writer.Dispose();
                    }
                    if (reader != null)
                    {
                        reader.Close();
                        reader.Dispose();
                    }
                    if (response != null)
                    {
                        response.Close();
                    }
                }
                return true;
            }