//引入命名空间
using System;
using System.Reflection;

[assembly:AssemblyVersionAttribute("2.0.1")]

public class Example1
{
   public static void Main()
   {
      Assembly thisAssem = typeof(Example1).Assembly;
      AssemblyName thisAssemName = thisAssem.GetName();
       
      Version ver = thisAssemName.Version;
       
      Console.WriteLine("This is version {0} of {1}.", ver, thisAssemName.Name);    
   }
}

// Get the operating system version.
OperatingSystem os = Environment.OSVersion;
Version ver = os.Version;
Console.WriteLine("Operating System: {0} ({1})", os.VersionString, ver.ToString());

// Get the common language runtime version.
Version ver = Environment.Version;
Console.WriteLine("CLR Version {0}", ver.ToString());

//引入命名空间
using System;
using System.Reflection;

public class Example
{
   public static void Main()
   {
      // Get the version of the executing assembly (that is, this assembly).
      Assembly assem = Assembly.GetEntryAssembly();
      AssemblyName assemName = assem.GetName();
      Version ver = assemName.Version;
      Console.WriteLine("Application {0}, Version {1}", assemName.Name, ver.ToString());
   }
}

//引入命名空间
using System;
using System.Reflection;

public class Example
{
   public static void Main()
   {
      // Get the version of the current assembly.
      Assembly assem = typeof(Example).Assembly;
      AssemblyName assemName = assem.GetName();
      Version ver = assemName.Version;
      Console.WriteLine("{0}, Version {1}", assemName.Name, ver.ToString());
   }
}

//引入命名空间
using System;
using System.Reflection;

public class Example
{
   public static void Main()
   {
      // Get the version of a specific assembly.
      string filename = @".\StringLibrary.dll";
      Assembly assem = Assembly.ReflectionOnlyLoadFrom(filename);
      AssemblyName assemName = assem.GetName();
      Version ver = assemName.Version;
      Console.WriteLine("{0}, Version {1}", assemName.Name, ver.ToString());
   }
}

//引入命名空间
using System;
using System.Deployment.Application;

public class Example
{
   public static void Main()
   {
      Version ver = ApplicationDeployment.CurrentDeployment.CurrentVersion;
      Console.WriteLine("ClickOnce Publish Version: {0}", ver);
   }
}

Version v1 = new Version(2, 0);
Version v2 = new Version("2.1");
Console.Write("Version {0} is ", v1);
switch(v1.CompareTo(v2))
{
   case 0:
      Console.Write("the same as");
      break;
   case 1:
      Console.Write("later than");
      break;
   case -1:
      Console.Write("earlier than");
      break;
}
Console.WriteLine(" Version {0}.", v2);

//引入命名空间
using System;

enum VersionTime {Earlier = -1, Same = 0, Later = 1 };

public class Example
{
   public static void Main()
   {
      Version v1 = new Version(1, 1);
      Version v1a = new Version("1.1.0");
      ShowRelationship(v1, v1a);
      
      Version v1b = new Version(1, 1, 0, 0);
      ShowRelationship(v1b, v1a);
   }

   private static void ShowRelationship(Version v1, Version v2)
   {
      Console.WriteLine("Relationship of {0} to {1}: {2}", 
                        v1, v2, (VersionTime) v1.CompareTo(v2));       
   }
}