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How to Merge VCF Files in C#

Intuitive and high-performance .NET API to merge VCF files.

When you have to manage extensive contact lists across different platforms, it can be a daunting task. However, merging VCF (Virtual Contact File) files provides a seamless solution to consolidating and organizing contact information in a unified format. Aspose.Email for .NET plays a pivotal role in streamlining this process by offering a robust API for creating, manipulating, and merging VCF files. By leveraging Aspose.Email’s capabilities, users can efficiently merge multiple VCF files, ensuring that valuable contact data is consolidated and readily accessible.

The .NET API is easy to install and utilize. Start optimizing your data management with Aspose.Email for .NET by performing one of the following actions:

Open NuGet package manager, search for Aspose.Email and install it on your device.
Use the following command from the Package Manager Console:


PM> Install-Package Aspose.Email

Steps for Merging VCF Files in C#

A basic file merging and concatenating with Aspose.Email for .NET APIs can be done with just few lines of code.

Get a list of file names to merge using Directory.GetFiles() method.
Create a list to hold the merged contacts of type VCardContact using List().
Load contacts from each file using VCardContact.LoadAsMultiple() method and add them to the merged list using AddRange() method.
Save the merged contacts to a new file using a FileStream with FileMode.Create.

System Requirements

Our APIs are supported on all major platforms and Operating Systems. Before executing the code below, please make sure that you have the following prerequisites on your system.

Microsoft Windows or a compatible OS with .NET Framework, .NET Core, Windows Azure, Mono or Xamarin Platforms
Development environment like Microsoft Visual Studio
Aspose.Email for .NET DLL referenced in your project - Install from NuGet using the Download button above

Merge VCF Files - C#try
            {
                // List of file names to merge
                var fileNames = Directory.GetFiles(contactsDirPath, "*.vcf");
                
                // List to hold the merged contacts
                var mergedContacts = new List<VCardContact>();

                // Load contacts from each file and add to the merged list
                foreach (var fileName in fileNames)
                {
                    var contacts = VCardContact.LoadAsMultiple(fileName);
                    mergedContacts.AddRange(contacts);
                }

                // Save the merged contacts to a new file
                using (var outputStream = new FileStream("mergedContacts.vcf", FileMode.Create))
                {
                    foreach (var contact in mergedContacts)
                    {
                        contact.Save(outputStream);
                    }
                }

                Console.WriteLine("Merged contacts saved successfully.");
            }
            catch (Exception ex)
            {
                Console.WriteLine($"An error occurred: {ex.Message}");
            }

The Advantages of Rational Data Management with the C# API

By utilizing Aspose.Email API, you will achieve the following results:

Consolidated Contact Management: The code sample below provided by Aspose.Email, will empower you to consolidate contact information into a unified dataset, simplifying contact management.
Elimination of Duplicate Entries: Aspose.Email’s VCF merging capability helps in eliminating identical items, ensuring data accuracy.
Enhanced Organizational Efficiency: Merging VCF files now enhances overall organizational efficiency by streamlining the contact management process.

About the .NET API

Aspose.Email for .NET is a robust and flexible API that empowers .NET developers to seamlessly integrate email management capabilities into their applications. With comprehensive features for creating, reading, and manipulating email files and messages, as well as handling calendar and contact data, Aspose.Email for .NET simplifies complex email-related tasks. Through its intuitive design and extensive functionality, the API streamlines email processing, formatting, and transmission, making it an indispensable tool for .NET development projects.

Aspose.Email provides free access to its resources:

a comprehensible documentation with thorough instructions on all supported features
support forum providing professional answers to all possible questions
the blog with a collection of posts on urgent issues
advanced features of the library

The API is standalone and does not require Microsoft Outlook or any other software installation.

VCF What is VCF File Format

VCF (Virtual Card Format) or vCard is a digital file format for storing contact information. The format is widely used for data interchange among popular information exchange applications. Most operating systems such as Windows and MacOS come with default applications to create and open these files. A single VCF file can contain contact information for one or multiple contacts. A VCF file usually contains information such as contact's name, address, phone number, email, birthday, photographs and audio in addition to a number of other fields. Being supported by email clients and services, there is no loss of data during the transfer of contacts via using the vCard format. The media type for VCF file format is text/vcard.