Initial commit

.gitignore

@@ -0,0 +1,3 @@
+_Resharper*
+bin
+obj

CronNET/Cron.csproj

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+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProductVersion>8.0.50727</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{F31D7AF3-FDFA-44F1-9C63-305BAF11D002}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>Cron</RootNamespace>
+    <AssemblyName>Cron</AssemblyName>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="CronDaemon.cs" />
+    <Compile Include="CronJob.cs" />
+    <Compile Include="CronSchedule.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>

CronNET/CronDaemon.cs

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+using System;
+using System.Collections.Generic;
+using System.Timers;
+
+namespace Cron
+{
+    public class CronDaemon
+    {
+        private readonly Timer timer = new Timer(60000);
+        private readonly List<CronJob> cron_jobs = new List<CronJob>();
+
+        public CronDaemon()
+        {
+            timer.Elapsed += timer_elapsed;
+        }
+
+        public void add_job(CronJob cron_job)
+        {
+           cron_jobs.Add(cron_job); 
+        }
+
+        public void start()
+        {
+            timer.Start();
+        }
+
+        public void stop()
+        {
+            timer.Stop();
+
+            foreach (CronJob job in cron_jobs)
+                job.abort();
+        }
+
+        private void timer_elapsed(object sender, ElapsedEventArgs e)
+        {
+            foreach (CronJob job in cron_jobs)
+                job.execute(DateTime.Now);
+        }
+    }
+}

CronNET/CronJob.cs

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+using System;
+using System.Threading;
+
+namespace CronNET
+{
+    public class CronJob
+    {
+        private readonly CronSchedule _cron_schedule = new CronSchedule();
+        private readonly ThreadStart _thread_start;
+        private Thread _thread;
+
+        public CronJob(string schedule, ThreadStart thread_start)
+        {
+            _cron_schedule = new CronSchedule(schedule);
+            _thread_start = thread_start;
+            _thread = new Thread(thread_start);
+        }
+
+        public void execute(DateTime date_time)
+        {
+            if (!_cron_schedule.is_time(date_time))
+                return;
+
+            if (_thread.ThreadState == ThreadState.Running)
+                return;
+
+             _thread = new Thread(_thread_start);
+             _thread.Start(); 
+        }
+
+        public void abort()
+        {
+          _thread.Abort();  
+        }
+
+    }
+}

CronNET/CronSchedule.cs

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+using System;
+using System.Collections.Generic;
+using System.Text.RegularExpressions;
+
+namespace CronNET
+{
+    public class CronSchedule
+    {
+        #region Readonly Class Members
+
+        readonly static Regex divided_regex = new Regex(@"(\*/\d+)");
+        readonly static Regex range_regex = new Regex(@"(\d+\-\d+)");
+        readonly static Regex wild_regex = new Regex(@"(\*)");
+        readonly static Regex list_regex = new Regex(@"(((\d+,)*\d+)+)");
+        readonly static Regex validation_regex = new Regex(divided_regex + "|" + range_regex + "|" + wild_regex + "|" + list_regex);
+
+        #endregion
+
+        #region Private Instance Members
+        
+        private readonly string _expression;
+        public List<int> minutes; 
+        public List<int> hours;
+        public List<int> days_of_month;
+        public List<int> months;
+        public List<int> days_of_week;
+
+        #endregion
+
+        #region Public Constructors
+
+        public CronSchedule()
+        {
+        }
+
+        public CronSchedule(string expressions)
+        {
+            this._expression = expressions;
+            generate();
+        }
+
+        #endregion
+
+        #region Public Methods
+
+        public bool is_valid()
+        {
+            return is_valid(this._expression);
+        }
+
+	    public bool is_valid(string expression)
+	    {
+	        MatchCollection matches = validation_regex.Matches(expression);
+	        return matches.Count == 5;
+        }
+
+        public bool is_time(DateTime date_time)
+        {
+            return minutes.Contains(date_time.Minute) &&
+                   hours.Contains(date_time.Hour) && 
+                   days_of_month.Contains(date_time.Day) &&
+                   months.Contains(date_time.Month) &&
+                   days_of_week.Contains((int)date_time.DayOfWeek);
+        }
+
+        public void generate()
+        {
+            if(!is_valid()) return;
+
+	        MatchCollection matches = validation_regex.Matches(this._expression);
+
+            generate_minutes(matches[0]);
+            generate_hours(matches[1]);
+            generate_days_of_month(matches[2]);
+            generate_months(matches[3]);
+            generate_days_of_weeks(matches[4]);
+        }
+
+        public void generate_minutes(Match match)
+        {
+            this.minutes = generate_values(match.ToString(), 0, 60);
+        }
+
+        public void generate_hours(Match match)
+        {
+            this.hours = generate_values(match.ToString(), 0, 24);
+        }
+
+        public void generate_days_of_month(Match match)
+        {
+            this.days_of_month = generate_values(match.ToString(), 1, 32);
+        }
+
+        public void generate_months(Match match)
+        {
+            this.months = generate_values(match.ToString(), 1, 13);
+        }
+
+        public void generate_days_of_weeks(Match match)
+        {
+            this.days_of_week = generate_values(match.ToString(), 0, 7);
+        }
+
+        public List<int> generate_values(string configuration, int start, int max)
+        {
+            if (divided_regex.IsMatch(configuration)) return divided_array(configuration, start, max);
+            if (range_regex.IsMatch(configuration)) return range_array(configuration);
+            if (wild_regex.IsMatch(configuration)) return wild_array(configuration, start, max);
+            if (list_regex.IsMatch(configuration)) return list_array(configuration);
+
+            return new List<int>();
+        }
+
+        public List<int> divided_array(string configuration, int start, int max)
+        {
+            if(!divided_regex.IsMatch(configuration)) 
+                return new List<int>();
+
+            List<int> ret = new List<int>();
+            string[] split = configuration.Split("/".ToCharArray());
+            int divisor = int.Parse(split[1]);
+
+            for(int i=start; i < max; ++i)
+               if(i % divisor == 0)
+                   ret.Add(i);
+
+            return ret;
+        }
+
+        public List<int> range_array(string configuration)
+        {
+            if(!range_regex.IsMatch(configuration)) 
+                return new List<int>();
+
+            List<int> ret = new List<int>();
+            string[] split = configuration.Split("-".ToCharArray());
+            int start = int.Parse(split[0]);
+            int end = int.Parse(split[1]);
+
+            for (int i = start; i <= end; ++i)
+                ret.Add(i);
+
+            return ret;
+        }
+
+        public List<int> wild_array(string configuration, int start, int max)
+        {
+            if(!wild_regex.IsMatch(configuration)) 
+                return new List<int>();
+
+            List<int> ret = new List<int>();
+
+            for (int i = start; i < max; ++i)
+                ret.Add(i);
+
+            return ret;
+        }
+
+        public List<int> list_array(string configuration)
+        {
+            if(!list_regex.IsMatch(configuration)) 
+                return new List<int>();
+
+            List<int> ret = new List<int>();
+
+            string[] split = configuration.Split(",".ToCharArray());
+
+            foreach(string s in split)
+                ret.Add(int.Parse(s));
+
+            return ret;
+        }
+
+        #endregion
+    }
+}

CronNET/Properties/AssemblyInfo.cs

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+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("CronNET")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("CronNET")]
+[assembly: AssemblyCopyright("Copyright © 2008")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible 
+// to COM components.  If you need to access a type in this assembly from 
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+// The following GUID is for the ID of the typelib if this project is exposed to COM
+[assembly: Guid("aac36739-a1a8-433d-88f6-8834bbd6655f")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Revision and Build Numbers 
+// by using the '*' as shown below:
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]

CronNETTests/CronScheduleTests.cs

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+using System;
+using System.Collections.Generic;
+using Cron;
+using MbUnit.Framework;
+
+namespace CronTests
+{
+    [TestFixture]
+    public class CronScheduleTests
+    {
+
+        [Test]
+        public void is_valid_test()
+        {
+            CronSchedule cron_schedule = new CronSchedule();
+            Assert.IsTrue(cron_schedule.is_valid("* * * * *"));
+            Assert.IsTrue(cron_schedule.is_valid("0 * * * *"));
+            Assert.IsTrue(cron_schedule.is_valid("0,1,2 * * * *"));
+            Assert.IsTrue(cron_schedule.is_valid("*/2 * * * *"));
+            Assert.IsTrue(cron_schedule.is_valid("1-4 * * * *"));
+            Assert.IsTrue(cron_schedule.is_valid("1-55 * * * *"));
+            Assert.IsTrue(cron_schedule.is_valid("1,10,20 * * * *"));
+            Assert.IsTrue(cron_schedule.is_valid("* 1,10,20 * * *"));
+        }
+
+        [Test]
+        public void divided_array_test()
+        {
+            CronSchedule cron_schedule = new CronSchedule();
+            List<int> results = cron_schedule.divided_array("*/2", 0, 10);
+            ArrayAssert.AreEqual(results.ToArray(), new int[]{0, 2, 4, 6, 8 } );
+        }
+
+        [Test]
+        public void range_array_test()
+        {
+            CronSchedule cron_schedule = new CronSchedule();
+            List<int> results = cron_schedule.range_array("1-10");
+            ArrayAssert.AreEqual(results.ToArray(), new int[]{ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 } );
+        }
+        [Test]
+        public void wild_array_test()
+        {
+            CronSchedule cron_schedule = new CronSchedule();
+            List<int> results = cron_schedule.wild_array("*", 0, 10);
+            ArrayAssert.AreEqual(results.ToArray(), new int[]{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 } );
+        }
+        [Test]
+        public void list_array_test()
+        {
+            CronSchedule cron_schedule = new CronSchedule();
+            List<int> results = cron_schedule.list_array("1,2,3,4,5,6,7,8,9,10");
+            ArrayAssert.AreEqual(results.ToArray(), new int[]{ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 } );
+        }
+
+        [Test]
+        public void generate_values_divided_test()
+        {
+           CronSchedule cron_schedule = new CronSchedule();
+            List<int> results = cron_schedule.generate_values("*/2", 0, 10);
+            ArrayAssert.AreEqual(results.ToArray(), new int[]{0, 2, 4, 6, 8 } );
+        }
+
+        [Test]
+        public void generate_values_range_test()
+        {
+           CronSchedule cron_schedule = new CronSchedule();
+            List<int> results = cron_schedule.generate_values("1-10", 0, 10);
+            ArrayAssert.AreEqual(results.ToArray(), new int[]{ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 } );
+        }
+
+        [Test]
+        public void generate_values_wild_test()
+        {
+            CronSchedule cron_schedule = new CronSchedule();
+            List<int> results = cron_schedule.generate_values("*", 0, 10);
+            ArrayAssert.AreEqual(results.ToArray(), new int[]{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 } );
+        }
+
+        [Test]
+        public void generate_values_list_test()
+        {
+            CronSchedule cron_schedule = new CronSchedule();
+            List<int> results = cron_schedule.generate_values("1,2,3,4,5,6,7,8,9,10", 0, 10);
+            ArrayAssert.AreEqual(results.ToArray(), new int[]{ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 } );
+        }
+
+        [Test]
+        public void generate_minutes_test()
+        {
+            CronSchedule cron_schedule = new CronSchedule("1,2,3 * * * *");
+            ArrayAssert.AreEqual(cron_schedule.minutes.ToArray(), new int[]{ 1, 2, 3  } );
+        }
+
+        [Test]
+        public void generate_hours_test()
+        {
+            CronSchedule cron_schedule = new CronSchedule("* 1,2,3 * * *");
+            ArrayAssert.AreEqual(cron_schedule.hours.ToArray(), new int[]{ 1, 2, 3  } );
+        }
+
+        [Test]
+        public void generate_days_of_month_test()
+        {
+            CronSchedule cron_schedule = new CronSchedule("* * 1,2,3 * *");
+            ArrayAssert.AreEqual(cron_schedule.days_of_month.ToArray(), new int[]{ 1, 2, 3  } );
+        }
+
+        [Test]
+        public void generate_months_test()
+        {
+            CronSchedule cron_schedule = new CronSchedule("* * * 1,2,3 *");
+            ArrayAssert.AreEqual(cron_schedule.months.ToArray(), new int[]{ 1, 2, 3  } );
+        }
+
+        [Test]
+        public void generate_days_of_weeks()
+        {
+            CronSchedule cron_schedule = new CronSchedule("* * * * 1,2,3 " );
+            ArrayAssert.AreEqual(cron_schedule.days_of_week.ToArray(), new int[]{ 1, 2, 3  } );
+        }
+
+        [Test]
+        public void is_time_minute_test()
+        {
+            CronSchedule cron_schedule = new CronSchedule("0 * * * *");
+            Assert.IsTrue(cron_schedule.is_time(DateTime.Parse("8:00 am")));
+            Assert.IsFalse(cron_schedule.is_time(DateTime.Parse("8:01 am")));
+
+            cron_schedule = new CronSchedule("0-10 * * * *");
+            Assert.IsTrue(cron_schedule.is_time(DateTime.Parse("8:00 am")));
+            Assert.IsTrue(cron_schedule.is_time(DateTime.Parse("8:03 am")));
+
+            cron_schedule = new CronSchedule("*/2 * * * *");
+            Assert.IsTrue(cron_schedule.is_time(DateTime.Parse("8:00 am")));
+            Assert.IsTrue(cron_schedule.is_time(DateTime.Parse("8:02 am")));
+            Assert.IsFalse(cron_schedule.is_time(DateTime.Parse("8:03 am")));
+        }
+
+        [Test]
+        public void is_time_hour_test()
+        {
+            CronSchedule cron_schedule = new CronSchedule("* 0 * * *");
+            Assert.IsTrue(cron_schedule.is_time(DateTime.Parse("12:00 am")));
+
+            cron_schedule = new CronSchedule("* 0,12 * * *");
+            Assert.IsTrue(cron_schedule.is_time(DateTime.Parse("12:00 am")));
+            Assert.IsTrue(cron_schedule.is_time(DateTime.Parse("12:00 pm")));
+        }
+
+        [Test]
+        public void is_time_day_of_month_test()
+        {
+            CronSchedule cron_schedule = new CronSchedule("* * 1 * *");
+            Assert.IsTrue(cron_schedule.is_time(DateTime.Parse("10/1/08")));
+        }
+
+        [Test]
+        public void is_time_month_test()
+        {
+            CronSchedule cron_schedule = new CronSchedule("* * * 1 *");
+            Assert.IsTrue(cron_schedule.is_time(DateTime.Parse("1/1/08")));
+
+            cron_schedule = new CronSchedule("* * * 12 *");
+            Assert.IsFalse(cron_schedule.is_time(DateTime.Parse("1/1/08")));
+
+            cron_schedule = new CronSchedule("* * * */3 *");
+            Assert.IsTrue(cron_schedule.is_time(DateTime.Parse("3/1/08")));
+            Assert.IsTrue(cron_schedule.is_time(DateTime.Parse("6/1/08")));
+        }
+
+        [Test]
+        public void is_time_day_of_week_test()
+        {
+            CronSchedule cron_schedule = new CronSchedule("* * * * 0");
+            Assert.IsTrue(cron_schedule.is_time(DateTime.Parse("10/12/08")));
+            Assert.IsFalse(cron_schedule.is_time(DateTime.Parse("10/13/08")));
+
+            cron_schedule = new CronSchedule("* * * * */2");
+            Assert.IsTrue(cron_schedule.is_time(DateTime.Parse("10/14/08")));
+        }
+
+        [Test]
+        public void is_time_test()
+        {
+            CronSchedule cron_schedule = new CronSchedule("0 0 12 10 *");
+            Assert.IsTrue(cron_schedule.is_time(DateTime.Parse("12:00:00 am 10/12/08")));
+            Assert.IsFalse(cron_schedule.is_time(DateTime.Parse("12:01:00 am 10/12/08")));
+        }
+    }
+}

CronNETTests/CronTests.csproj

@@ -0,0 +1,54 @@
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProductVersion>8.0.50727</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{6FCFBDF4-ECB7-4FC2-A376-E962B11D487D}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>CronTests</RootNamespace>
+    <AssemblyName>CronTests</AssemblyName>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="MbUnit.Framework, Version=2.4.2.130, Culture=neutral, PublicKeyToken=5e72ecd30bc408d5" />
+    <Reference Include="System" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="CronScheduleTests.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\CronDaemon\Cron.csproj">
+      <Project>{F31D7AF3-FDFA-44F1-9C63-305BAF11D002}</Project>
+      <Name>Cron</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>

CronNETTests/Properties/AssemblyInfo.cs

@@ -0,0 +1,35 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("CronNETTests")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("CronNETTests")]
+[assembly: AssemblyCopyright("Copyright © 2008")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible 
+// to COM components.  If you need to access a type in this assembly from 
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+// The following GUID is for the ID of the typelib if this project is exposed to COM
+[assembly: Guid("6a430089-ab18-4d72-9d7a-5a4ee0883153")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Revision and Build Numbers 
+// by using the '*' as shown below:
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]

Readme.md

@@ -0,0 +1,93 @@
+CronNET
+---------------------------
+
+CronNET is a simple C# library for running tasks based on a cron schedule.
+
+Cron Schedules
+===============
+
+CronNET supports most cron scheduling.
+
+*    *    *    *    *  
+┬    ┬    ┬    ┬    ┬
+│    │    │    │    │
+│    │    │    │    │
+│    │    │    │    └───── day of week (0 - 6) (Sunday=0 )
+│    │    │    └────────── month (1 - 12)
+│    │    └─────────────── day of month (1 - 31)
+│    └──────────────────── hour (0 - 23)
+└───────────────────────── min (0 - 59)
+
+  `* * * * *`        Every minute.
+  `0 * * * *`        Top of every hour.
+  `0,1,2 * * * *`    Every hour at minutes 0, 1, and 2.
+  `*/2 * * * *`      Every two minutes.
+  `1-55 * * * *`     Every minute through the 55th minute.
+  `* 1,10,20 * * *`  Every 1st, 10th, and 20th hours.
+
+Console Example
+===============
+
+``` c#
+using System.Threading;
+using CronNET;
+
+namespace CronNETExample.Console
+{
+    class Program
+    {
+        private static readonly CronDaemon cron_daemon = new CronDaemon();            
+
+        static void Main(string[] args)
+        {
+            cron_daemon.add_job(new CronJob("* * * * *", task));
+            cron_daemon.start();
+
+            // Wait and sleep forever. Let the cron daemon run.
+            while(true) Thread.Sleep(6000);
+        }
+
+        static void task()
+        {
+          Console.WriteLine("Hello, world.")
+        }
+    }
+}
+```
+
+Windows Service Example
+=======================
+
+``` c#
+using System.Threading;
+using CronNET;
+
+namespace CronNETExample.WindowsService
+{
+    public partial class Service : ServiceBase
+    {
+        private readonly CronDaemon cron_daemon = new CronDaemon();
+
+        public Service()
+        {
+            InitializeComponent();
+        }
+
+        protected override void OnStart(string[] args)
+        {
+            cron_daemon.add_job(new CronJob("*/2 * * * *", task));
+            cron_daemon.start();
+        }
+
+        protected override void OnStop()
+        {
+            cron_daemon.stop();
+        }
+
+        private void task()
+        {
+          Console.WriteLine("Hello, world.")
+        }
+    }
+}
+```