What is the main purpose of GUID in C#?

GUID (Global Unique Identifier) is primarily utilized in C# for generating unique identifiers. It is a 128-bit number typically represented as a string, ensuring uniqueness in a distributed environment. Here are the main functions of GUID:

1. The only identifier: GUID can be used to generate globally unique identifiers, ensuring that each entity (object, file, database record, etc.) in a distributed system has a unique identifier.
2. Primary keys in databases are often created using GUIDs to ensure that each record has a unique identifier.
3. Tracking and logging: GUIDs can be used to track objects, operations, or logs. By generating unique identifiers with GUIDs, it becomes easy to track various operations and events.
4. Document and Resource Management: GUIDs can be used to uniquely identify files, resources, and components. By using GUIDs as file names or resource identifiers, it ensures the uniqueness of the file or resource throughout the system.

In conclusion, in C#, GUID is mainly used for generating globally unique identifiers to ensure uniqueness of objects, files, database records, etc. in distributed environments.