• • Performance: Compress and stream large files on the fly—no waiting for entire archives to build before transfer.

• • Security: Encrypted transfers protect data in transit, meeting compliance for regulated sectors.

• • Developer Experience: Clean, modern APIs and responsive support from Xceed mean less friction, more productivity.

Step 1: Setting Up Xceed’s Real-Time Zip & SFTP Libraries

First, grab the free trial of Xceed’s Ultimate Suite or Real-Time Zip component. Add the NuGet packages to your project:

Install-Package Xceed.Zip
Install-Package Xceed.Sftp

For a full working sample, check out the GitHub repository (demo project).

Step 2: Real-Time ZIP Compression in .NET

With Xceed’s Real-Time Zip, you can stream files directly into a ZIP archive as they’re being read or written—no temp files, no delays.

// Create a real-time ZIP archive and add files dynamically
using (var zip = new Xceed.Zip.RealTimeZip("output.zip", FileAccess.Write))
{
    zip.AddFile("report1.csv");
    zip.AddFile("report2.csv");
    // Add more files as needed
    zip.Save(); // Streams directly to disk or network
}

Step 3: Secure File Transfer with SFTP

Now, transfer your compressed archive securely using Xceed’s SFTP library. Here’s a quick sample:

using (var sftp = new Xceed.Sftp.SftpClient("sftp.myserver.com", "username", "password"))
{
    sftp.Connect();
    sftp.UploadFile("output.zip", "/uploads/output.zip");
    sftp.Disconnect();
}

Security Best Practices for Regulated Industries

• • Always use SFTP or FTPS—not plain FTP—to encrypt file transfers.

• • Rotate credentials and use SSH keys where possible.

• • Validate ZIP archive contents before extraction to avoid zip bombs or malicious payloads.

• • Log all file transfer activity for audit trails and compliance.

• • Keep Xceed libraries updated to leverage the latest security patches.

Common Pitfalls & How to Avoid Them

• • Large Files: Use real-time streaming to avoid memory bottlenecks.

• • Timeouts: Tune SFTP client settings for large or slow transfers.

• • Permission Issues: Double-check server-side write permissions before transfer.

• • Compliance: Ensure all endpoints are encrypted and logs are retained as per industry standards.

Ready to Accelerate Your .NET Workflows?

Get instant access to Xceed’s Real-Time Zip and SFTP libraries—start your free trial now and see how much faster and more secure your .NET file workflows can be.

FAQ

• • Can I use Xceed’s Real-Time Zip and SFTP together in the same workflow?
    Absolutely—stream files into a ZIP archive and transfer them over SFTP in a single automated process.

• • Is the trial fully featured?
    Yes, the 45-day trial provides full access to all features and support.

• • Where can I find more code samples?
    Visit the GitHub repo for complete demos.

• • What support is available?
    Trial users get access to Xceed’s support team.