A Semantic Version Library for .Net

Create, parse, and manipulate semantic version numbers with the SemVersion class and semantic version ranges with the SemVersionRange class. This library complies with v2.0.0 of the semantic versioning spec from semver.org.

Installation

With the NuGet console:

Install-Package semver

Parsing

var version = SemVersion.Parse("1.1.0-rc.1+e471d15", SemVersionStyles.Strict);

Constructing

var v1 = new SemVersion(1, 0);
var vNextRc = SemVersion.ParsedFrom(1, 1, 0, "rc.1");

Comparing

if (version.ComparePrecedenceTo(vNextRc) == 0)
    Console.WriteLine($"{version} has the same precedence as {vNextRc}");

if (version.CompareSortOrderTo(vNextRc) > 0)
    Console.WriteLine($"{version} sorts after {vNextRc}");

Outputs:

1.1.0-rc.1+e471d15 has the same precedence as 1.1.0-rc.1
1.1.0-rc.1+e471d15 sorts after 1.1.0-rc.1

Sorting and Enumerable Max/Min

Since there are two ways of comparing semantic versions, the desired comparison must be specified when sorting or comparing.

var examples = new List<Example> { ... };
// Put in sort order
var sorted = examples.OrderBy(e => e.Version, SemVersion.SortOrderComparer);
// Order by precedence, then by release date
var ordered = examples.OrderBy(e => e.Version, SemVersion.PrecedenceComparer)
                      .ThenBy(e => e.Released);

var versions = new List<SemVersion> { vNextRc, v1 };
var max = versions.Max(SemVersion.SortOrderComparer);
console.WriteLine($"Max version is {max}");

Outputs:

Max version is 1.1.0-rc.1

Manipulating

Console.WriteLine($"Current: {version}");
if (version.IsPrerelease)
{
    Console.WriteLine($"Prerelease: {version.Prerelease}");
    Console.WriteLine($"Next release version is: {version.WithoutPrereleaseOrMetadata()}");
}

Outputs:

Current: 1.1.0-rc.1+e471d15
Prerelease: rc.1
Next release version is: 1.1.0

Version Ranges

var range = SemVersionRange.Parse("^1.0.0");
var prereleaseRange = SemVersionRange.ParseNpm("^1.0.0", includeAllPrerelease: true);
Console.WriteLine($"Range: {range}");
Console.WriteLine($"Prerelease range: {prereleaseRange}");
Console.WriteLine($"Range includes version {version}: {range.Contains(version)}");
Console.WriteLine($"Prerelease range includes version {version}: {prereleaseRange.Contains(version)}");

// Alternative: another way to call SemVersionRange.Contains(version)
version.Satisfies(range);

// Alternative: slower because it parses the range on every call
version.SatisfiesNpm("^1.0.0", includeAllPrerelease: true)

Outputs:

Range: 1.*
Prerelease range: *-* 1.*
Range includes version 1.1.0-rc.1+e471d15: False
Prerelease range includes version 1.1.0-rc.1+e471d15: True