Convert ZIP to EXCEL via C# .NET or Online App

How to Convert ZIP to EXCEL in C#

Create Archive instance with input ZIP file
Extract contents of ZIP file using ExtractToDictionary method of Archive
Get the list of extracted files from unzipped directory using Directory.GetFiles method - Loop through each unzipped / extracted file
Convert extracted file to EXCEL format using Convert method of Converter class in GroupDocs.Conversion API
Keep the list of all converted EXCEL files - Create instance of Merger class in GroupDocs.Merger API with first converted EXCEL file in the list
Loop through the list of converted EXCEL files starting from second converted file and merge all converted EXCEL files using Join method of Merge class
Finally, save the merged EXCEL document using Save method of Merger class

Free App for ZIP to EXCEL Conversion

	// Supports converting zip, tar, gzip, lz, cpio, bz2, rar, xz and 7-zip file formats
	// Create Archive with input ZIP file
	using (var archive = new Archive("input.zip"))
	{
	// Extract all files in input ZIP file to unzipped folder
	archive.ExtractToDirectory("unzipped");
	}

	// Temporary List to hold names of extracted files from unzipped folder
	List<string> filesList = new List<string>();

	// Get the list of all files (with full paths) from unzipped folder
	string[] files = Directory.GetFiles("unzipped");

	// Loop through each unzipped file
	foreach (string file in files)
	{
	// Create FileInfo instance from file path
	FileInfo fi = new FileInfo(file);
	// Load the extracted file
	var converter = new GroupDocs.Conversion.Converter(fi.FullName);
	// Set the convert options for PDF format
	var convertOptions = converter.GetPossibleConversions()["pdf"].ConvertOptions;
	// Convert to PDF format
	converter.Convert(string.Format("{0}.pdf", fi.Name), convertOptions);
	// Add the file names to temporary List after converting to PDF
	filesList.Add(string.Format("{0}.pdf", fi.Name));
	}

	// Merge PDF files using GroupDocs.Merger API
	// Instantiate Merger with first input PDF document in temporary List
	using (Merger merger = new Merger(filesList[0]))
	{
	// Loop through list of converted PDF documents starting from second file
	for(int i=1; i<filesList.Count; i++)
	{
	// Call Join method of Merger class instance and pass remaining source files one by one
	merger.Join(filesList[i]);
	}

	// Call Save method of Merger class instance to save merged PDF document
	merger.Save("output.pdf");
	}

view raw convert-zip-to-pdf.cs hosted with ❤ by GitHub

Encrypt ZIP Files in C#

Aspose.ZIP offers robust features for password-protecting archives, including traditional (ZipCrypto) and mixed encryption techniques. Secure your ZIP files, a complete archive or selectively encrypt specific files with passwords. Additionally, you can apply popular encryption types such as AES-128, AES-192, AES-256, and 7z (7-zip) to ensure maximum security for your archives.

Illustrated below is a .NET code example showcasing the encryption of multiple ZIP files using a mixed encryption technique.

Compress ZIP Files or Folders

Aspose.ZIP for .NET supports a multitude of archives management features including encryption, compression and decompression of files and folders using C#. Encrypt archives with specified passwords, compress or decompress ZIP files and folders according to its original structure. You can also add or delete ZIP files from existing archives.

Work with archiving ZIP files and folder on different operating systems such as Windows, Linux or macOS while using platforms such as Windows Azure, Mono and Xamarin.

	// Supports converting zip, tar, gzip, lz, cpio, bz2, rar, xz and 7-zip file formats
	using (FileStream zipFile = File.Open(dataDir + "CompressWithTraditionalEncryption_out.zip", FileMode.Create))
	{
	using (FileStream source1 = File.Open(dataDir + "alice29.txt", FileMode.Open, FileAccess.Read))
	{
	var archive = new Archive(new ArchiveEntrySettings(null, new TraditionalEncryptionSettings("p@s$")));
	archive.CreateEntry("alice29.txt", source1);
	archive.Save(zipFile);
	}
	}

view raw encrypt-zip-files-using-encryption-techniques.cs hosted with ❤ by GitHub

Frequently Asked Questions (FAQs)

Can I convert ZIP files to EXCEL online without paying anything?

Yes. You can easily convert ZIP files to EXCEL online using our completely free converter. It requires no software installation or user registration—just upload your file, convert and download your EXCEL.

How do I convert ZIP files to EXCEL using C# code?

Converting ZIP files to EXCEL using C# is straightforward with the Conholdate.Total for .NET APIs. We provide practical, ready-to-use code samples and clear documentation to simplify the integration into your applications.

Do I need to have Microsoft ZIP installed to perform ZIP-to-EXCEL conversions with C#?

No. you don’t need Microsoft ZIP installed. Conholdate.Total APIs operate independently, allowing you to convert ZIP documents directly to EXCEL format within your .NET applications without ZIP itself.

How quickly does your online ZIP-to-EXCEL converter work?

Our online converter is built for speed and efficiency. Most conversions take just a few seconds—even when dealing with larger or more complex ZIP files.

Will the online converter preserve formulas and hyperlinks from my ZIP files?

Our online ZIP-to-EXCEL converter keeps all your hyperlinks, images, charts and formatting intact. However, ZIP formulas are converted into their resulting values in the final EXCEL, ensuring an accurate and readable document.

Can I automate the ZIP-to-EXCEL conversion on my own servers?

Definitely! You can automate the ZIP-to-EXCEL conversion process using Conholdate.Total for .NET. It’s perfect for handling batch jobs, scheduled conversions, or integrating seamlessly into your backend workflows.

Is it safe to upload my ZIP files for online EXCEL conversion?

Your security and privacy are extremely important to us. Uploaded files are securely processed and automatically deleted from our servers shortly afterward, ensuring your data remains confidential.

Can I convert several ZIP sheets into a single EXCEL using C#?

Yes. you can. Conholdate.Total allows you to select and combine multiple sheets from your ZIP workbook into a single EXCEL document effortlessly.

Does Conholdate.Total for .NET support batch ZIP files conversion to other formats?

Yes. Conholdate.Total for .NET supports batch conversion of ZIP documents, allowing developers to convert multiple files at once.

Does the ZIP to EXCEL API work with .NET Core, .NET 5 and newer versions?

Absolutely. Our ZIP-to-EXCEL conversion API supports all modern .NET frameworks, including .NET Core, .NET 5, .NET 6, and even .NET 7. This gives you flexibility regardless of your project environment.

Can I add watermarks or passwords to EXCELs created from ZIP files?

Yes. Conholdate.Total provides convenient features to enhance your EXCEL documents. You can add watermarks for branding or confidentiality, apply password protection, and even customize other EXCEL security settings easily during the conversion process.

What file formats for documents and images are supported by Conholdate.Total for .NET?

Conholdate.Total for .NET integrates APIs from Aspose and GroupDocs to enable .NET programmers to perform various document manipulation actions on a wide range of file formats including Word, Excel, PDF, PowerPoint, Visio, HTML and images in .NET, C#, ASP.NET and VB.NET applications.

Can I convert password-protected ZIP files to EXCEL in .NET?

Yes. Conholdate.Total for .NET supports the conversion of password-protected ZIP files. With built-in methods to handle encrypted documents, you can securely convert sensitive files to EXCEL while preserving their confidentiality and integrity.

What are the licensing costs for Conholdate.Total’s ZIP to EXCEL conversion API?

Conholdate.Total for .NET offers a fully functional free trial version for 30 days. Paid plans are available for higher usage levels. Developers should carefully review the pricing and licensing terms before using the document conversion API.

What is ZIP file format?

The ZIP file format holds significant recognition and finds widespread application in file sharing and data storage. Its ability to compress files into smaller sizes makes it highly efficient for transferring and archiving large files. With broad support across various operating systems, ZIP files offer enhanced compatibility compared to other archive formats. Simplifying file management, ZIP files store all files and data within a single archive, eliminating the need for additional files or folders.

The versatility of ZIP files becomes particularly valuable when sharing multiple files or folders simultaneously. By compressing an entire folder into a ZIP file, users can easily distribute several files to others, simplifying the sharing process. Additionally, ZIP files provide an added layer of security by allowing users to protect their data with a password. This security feature proves particularly beneficial when sensitive information is involved, ensuring that only authorized individuals can access the files.

The benefits of ZIP files extend beyond their compression and security capabilities. ZIP files offer convenience by allowing for easy extraction of individual files from the archive, avoiding the need to extract the entire contents. This flexibility saves time and simplifies the retrieval of specific files from a compressed archive. Furthermore, ZIP files support various compression algorithms, enabling users to choose the level of compression based on their specific requirements.

Another advantage of the ZIP format is its ability to preserve file metadata, such as timestamps and permissions. This ensures that the archived files retain their original properties, making ZIP files ideal for data backup and preservation purposes. Moreover, ZIP files can be segmented into multiple volumes, facilitating the storage and transfer of large archives across different media or network connections.

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What is EXCEL file format?

Excel is an immensely popular spreadsheet software program developed by Microsoft Corporation. Its file format, a binary file format, stores data in worksheets comprising cells organized into rows and columns. Excel files typically possess either a .xlsx or .xls file extension. Within these files, one can find an array of data types including numbers, text, formulas, charts, and images. The file format also supports a plethora of formatting options, ranging from font styles, colors, and borders to conditional formatting that permits users to apply distinct formatting based on specific criteria.

The multifaceted nature of Excel files renders them invaluable for various tasks, including financial analysis, budgeting, and data analysis. When faced with large amounts of data, Excel provides an efficient means of organization and manipulation. Additionally, it serves as a versatile tool for creating visually appealing charts and graphs that facilitate data visualization.

Apart from the standard Excel file format, several other formats are commonly employed alongside it. For instance, CSV (Comma Separated Values) files enable the seamless import and export of data between diverse software applications. XML (Extensible Markup Language) files, on the other hand, allow structured data storage and exchange.

Excel’s enduring popularity stems from its user-friendly interface and extensive range of features. Its functionalities empower users to perform complex calculations, generate reports, and automate repetitive tasks. Whether you’re a professional in finance, data analysis, or simply an individual looking to effectively organize information, Excel remains an indispensable tool for achieving these objectives.

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