Overview of New Features in .NET 10

Tue, 10 Mar 2026 15:55:34 +0800

Library Improvements

Numeric Ordering for String Comparison

In .NET 10, the System.String class adds a CompareAsNumbers method for comparing strings as numbers. This is very useful for sorting strings that contain numbers, such as file names or version numbers.

StringComparer numericStringComparer = StringComparer.Create(CultureInfo.CurrentCulture, CompareOptions.NumericOrdering);

Console.WriteLine(numericStringComparer.Equals("02", "2"));
// Output: True

foreach (string os in new[] { "Windows 8", "Windows 10", "Windows 11" }.Order(numericStringComparer))
{
 Console.WriteLine(os);
}

// Output:
// Windows 8
// Windows 10
// Windows 11

HashSet<string> set = new HashSet<string>(numericStringComparer) { "007" };
Console.WriteLine(set.Contains("7"));
// Output: True

UTF-8 Support for Hexadecimal String Conversion

.NET 10 adds UTF-8 support for hexadecimal string conversion operations in the Convert class. These new methods provide an efficient way to convert between UTF-8 byte sequences and hexadecimal representations without intermediate string allocations:

Runtime on Hi Work Notes

Overview of New Features in .NET 10

Library Improvements

Numeric Ordering for String Comparison

UTF-8 Support for Hexadecimal String Conversion