Making file input textboxes wider
This will make the invisible file upload controls (that cannot be styled) 54 characters wide. We'll edit the CSS in the skin for our Upload control to make the visible textboxes about 350px wide to match.
Step 2: Working with the uploaded Zip file
Since we're using the RadProgressManager to upload large files, we cannot simply access uploaded files through the RadUpload UploadedFiles collection. Instead, we need to access files via the ProgressManager's RadUploadContext, like this:
When using this approach, RadUpload will not save our files automatically. We need to call the "SaveAs" method for each UploadFile before it is available in the filesytem.
Now the important part: we need to unzip the file.
Unzipping the zip
There are two approaches we can take to unzipping the file when using the SharpZipLib: quick and easy or not as quick with more control. We'll look at both approaches so you can decide which works best for you. Before we do this, though, we need to add a copy of the SharpZipLib assembly to our bin directory (you can download the latest version here).
Clearly, unzipping files with .NET is not that hard. With RadUpload to make the task of uploading large files a snap and SharpZibLib to make unzipping a no brainer, you can easily implement your own upload system that accepts zip files and expands them on the server. In our next installment, we'll look at how you can do the reverse- use SharpZipLib to zip files on the server and make them available for download.
Download sample code used in this article
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