如何在SQL Server的asp.net中仅上载和下载doc和docx文档 [英] How to upload and download only doc and docx document in asp.net in sql server

问题描述

大家好，


如何在SQL Server的asp.net中仅上载和下载doc和docx文档.

谢谢你
Mohd Wasif

Hi All,


How to upload and download only doc and docx document in asp.net in sql server.

Thanking You
Mohd Wasif

推荐答案

您不能阻止人们上载他们喜欢的东西，而不是在ASP.NET中，但是您可以在存储文件之前检查文件的有效性.您的数据库.

You can''t stop people uploading whatever they like, not in ASP.NET, but you can check the validity of the files before storing them in your DB.

您可以使用JavaScript来执行此操作，也可以使用正则表达式来获取文件扩展名，如下所示:

You can use JavaScript to do so,you can use regular expression to get file extension like this:

var extens=(/[.]/.exec(myfile)) ? /[^.]+

/.exec(myfile) : undefined;

/.exec(myfile) : undefined;

myfile是文件的地址或路径.这只是将字符串放在."之后. .然后，您可以使用if进行一些控制检查.像:

myfile is the address or the path of the file. This simply takes the part of the string after "." . Then you can place some control checks with if. Something like :

if(extens=="doc" || extens=="docx"|| extens=="xls")
{
//your method goes here
}
else
{
alert("file is invalid");
}

您也可以参考此以获得更多帮助:

http://www.coursesweb.net/javascript/check-file-type-before-upload_t [^ ]

希望对您有所帮助:)

You can also refer to this for more help:

http://www.coursesweb.net/javascript/check-file-type-before-upload_t[^]

hope it helps :)

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