Added AssemblyExtensions

DotNet.Extensions/DotNet.Extensions.csproj

@@ -16,6 +16,7 @@
     <PackageLicenseExpression>Unlicense</PackageLicenseExpression>
     <PackageIcon>Extensions-512x512.png</PackageIcon>
     <AssemblyName>MikaelDui.Extensions</AssemblyName>
+	<Product>Mikael Dúi's .NET Extensions</Product>
   </PropertyGroup>
 
   <ItemGroup>

DotNet.Extensions/Reflection/AssemblyExtensions.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Text;
+
+namespace System.Reflection
+{
+    public static class AssemblyExtensions
+    {
+        /// <summary>
+        /// Like "1.2.3.0".
+        /// </summary>
+        public static string GetFileVersion(this Assembly assembly) =>
+            assembly.GetCustomAttribute<AssemblyFileVersionAttribute>().Version;
+
+        /// <summary>
+        /// Like "1.2.3+1a2b3c4d".
+        /// </summary>
+        public static string GetProductVersion(this Assembly assembly) =>
+            FileVersionInfo.GetVersionInfo(assembly.Location).ProductVersion;
+    }
+}