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Understanding File Upload
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Understanding File Upload
http://www.15seconds.com/Issue/001003.htm
As you probably know, Microsoft has one free DLL, namely CPSHOST.DLL, with which you can upload files. It requires a folder with write permissions since it is there where the file(s) will be posted (saved) when they arrive to the Web server (IIS). Another drawback is that you are focusing only on file uploading and not on other uploading possibilities. Remember, when you upload a file, you can also upload (post) any other inputs, such as the input file, input checkbox, input password, and input image, etc. And you can check their value just as if you were posting an ordinary form.
So when you upload a file you are really posting a form's content to the browser by using a different encoding type (enctype) in your form. That encoding is specified as enctype="multipart/form-data" as an attribute of your form.
The specification in RFC 1867 "Form-based File Upload in HTML" describes the mechanism by which a file may be uploaded from a Web browser to the server. ASP > Tips and Tutorials > File Manipulation Oct 10, 2006
So when you upload a file you are really posting a form's content to the browser by using a different encoding type (enctype) in your form. That encoding is specified as enctype="multipart/form-data" as an attribute of your form.
The specification in RFC 1867 "Form-based File Upload in HTML" describes the mechanism by which a file may be uploaded from a Web browser to the server. ASP > Tips and Tutorials > File Manipulation Oct 10, 2006
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