C语言操作ADO数据库 这些操作是对一个微软Access 2000数据库进行的,但是SQL或是其它 ADO数据源可以通过简单的改变连接字符串来使用.

下面的示例将文件从 http://www.contoso.com 下载到本地硬盘。
         string remoteUri = "http://www.contoso.com/library/homepage/images/";
         string fileName = "ms-banner.gif", myStringWebResource = null;
         // Create a new WebClient instance.
         WebClient myWebClient = new WebClient();
         // Concatenate the domain with the Web resource filename.
         myStringWebResource = remoteUri + fileName;
         Console.WriteLine("Downloading File \"{0}\" from \"{1}\" .......\n\n", fileName, myStringWebResource);
         // Download the Web resource and save it into the current filesystem folder.
         myWebClient.DownloadFile(myStringWebResource,fileName);      
         Console.WriteLine("Successfully Downloaded File \"{0}\" from \"{1}\"", fileName, myStringWebResource);
         Console.WriteLine("\nDownloaded file saved in the following file system folder:\n\t" + Application.StartupPath.);