如何在ASP.NET里用HtmlInputFile控件来上载文件。
(華版)
以前要在ASP里上载文件真的要写一大堆程序。。。比如说把文件分段转换成Base64然后才上载到服务器,而在服务器那边由要从Base64转会原本的byte值才可以分段写如文件中。但是在ASP.NET里就完全只需用一行代码加一个HtmlInputFile控件就能做完这些复杂的程序。
而要注意的就是紧记在包含HtmlInputFile控件的Form里多添加一个enctype的属性,enctype="multipart/form-data";然后再用HtmlInputFile控件里的PostedFile.SaveAs方法来上载文件就可以了。
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整体来说,最为麻烦的也不过是要从PostedFile.FileName里读取真整的文件名称(不包括括file path);不过这也大可用以下的简短代码来完成。
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如果要上载多个文件(为可更有效的重用代码),那可以用Request.File来读取每一个所选的文件名称;就如以下的代码。
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點撃下載代碼。