initial commit

Demo/Demo.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFrameworks>net48;net6.0</TargetFrameworks>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\src\CronTimer.csproj" />
+  </ItemGroup>
+
+</Project>

Demo/Program.cs

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+using System;
+
+namespace Demo
+{
+    class Program
+    {
+        static void Main()
+        {
+            var expression = "0-30/5 * * * * *";
+            Console.WriteLine(expression);
+            var timer = new CronTimer(expression, "Asia/Hong_Kong", includingSeconds: true);
+            timer.OnOccurence += (s, ea) => Console.WriteLine($"{ea.At:T} - {DateTime.Now}");
+            timer.Start();
+
+            while (Console.ReadKey().Key != ConsoleKey.Escape)
+            {
+            }
+
+            timer.Stop();
+        }
+    }
+}