摘要：
protected void Button3_Click(object sender, EventArgs e){string fileName = "aaa.zip";//客户端保存的文件名string filePath = Server.MapPath("DownLoad/aaa.zip");//路径System.IO.FileInfo fileInfo = new System.IO.FileInfo(filePath);if (fileInfo.Exists == true){const long ChunkSize = 102400;//100 阅读全文
