Introduction
IFormattable Interface provides functionality to format the value of an object into a string representation. A simple example using a record demonstrates how to display different properties, along with formatting and calculations.
- "A" or "Age" => $"{BirthDay.GetAge()}" does a calculation
- "B" => $"{BirthDay:O}" does special date formatting
Usage
Output
Applies to
| Product | Versions |
|---|---|
| .NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10, 11 |
| .NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| .NET Standard | 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1 |
| UWP | 10.0 |
Summary
To dive deeper, read Microsoft documentation
Note that the content is intentionally short to make it easier to learn.




