For a long time, due to the limitations of FileSystemObject, the biggest problem in ASP is file upload, and most solutions are to install third-party upload components. But there are many problems with third-party components. Some components need to be registered, and some components need to add their copyright information to the form. There are also component compatibility issues and many virtual hosts do not support uploading components. Huajing component-less upload is the first time in the whole network that uses ADO control to realize upload.
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