Var vs Dynamic vs Object in c#

In C#, var is statically typed and determined at compile-time, ensuring type safety. dynamic allows runtime flexibility but lacks compile-time checks, increasing risk. object is the base type for all data, requiring casting. Choose based on whether you need type inference, flexibility, or general-purpose storage with conversions.

Here's a clear and concise explanation of var, object, and dynamic in C#, with individual content for each:

Var

• Type is inferred at compile-time based on the assigned value.
• Still strongly typed; can't change type after initialization.
• Improves readability when the type is obvious or long.

Dynamic

• Type is resolved at runtime, no IntelliSense or compile-time checks.
• Can change types and properties freely.
• Ideal for working with COM, JSON, reflection, etc.

Object

• Can store any data type (value or reference).
• Requires explicit casting when retrieving the original type.
• Useful for general-purpose storage.

Conclusion

Choosing between var, object, and dynamic depends on your coding needs. Use var for concise, type-safe code; object for storing any type with casting; and dynamic for flexible, runtime-bound operations. Understanding their differences helps you write more maintainable, efficient, and error-free C# applications.