diff --git a/Cancellation.sln b/Cancellation.sln
new file mode 100644
index 0000000..c677070
--- /dev/null
+++ b/Cancellation.sln
@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.28307.572
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Cancellation", "Cancellation\Cancellation.csproj", "{AF200868-81B6-45E4-A5CD-3F14AFA403A7}"
+EndProject
+Global
+ GlobalSection(SolutionConfigurationPlatforms) = preSolution
+ Debug|Any CPU = Debug|Any CPU
+ Release|Any CPU = Release|Any CPU
+ EndGlobalSection
+ GlobalSection(ProjectConfigurationPlatforms) = postSolution
+ {AF200868-81B6-45E4-A5CD-3F14AFA403A7}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {AF200868-81B6-45E4-A5CD-3F14AFA403A7}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {AF200868-81B6-45E4-A5CD-3F14AFA403A7}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {AF200868-81B6-45E4-A5CD-3F14AFA403A7}.Release|Any CPU.Build.0 = Release|Any CPU
+ EndGlobalSection
+ GlobalSection(SolutionProperties) = preSolution
+ HideSolutionNode = FALSE
+ EndGlobalSection
+ GlobalSection(ExtensibilityGlobals) = postSolution
+ SolutionGuid = {3C8ED39C-328D-4152-B606-0824F4785633}
+ EndGlobalSection
+EndGlobal
diff --git a/Cancellation/App.config b/Cancellation/App.config
new file mode 100644
index 0000000..731f6de
--- /dev/null
+++ b/Cancellation/App.config
@@ -0,0 +1,6 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/Cancellation/Cancellation.csproj b/Cancellation/Cancellation.csproj
new file mode 100644
index 0000000..4122bf4
--- /dev/null
+++ b/Cancellation/Cancellation.csproj
@@ -0,0 +1,83 @@
+
+
+
+
+ Debug
+ AnyCPU
+ {AF200868-81B6-45E4-A5CD-3F14AFA403A7}
+ WinExe
+ Cancellation
+ Cancellation
+ v4.6.1
+ 512
+ true
+ true
+
+
+ AnyCPU
+ true
+ full
+ false
+ bin\Debug\
+ DEBUG;TRACE
+ prompt
+ 4
+
+
+ AnyCPU
+ pdbonly
+ true
+ bin\Release\
+ TRACE
+ prompt
+ 4
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ Form
+
+
+ Form1.cs
+
+
+
+
+ Form1.cs
+
+
+ ResXFileCodeGenerator
+ Resources.Designer.cs
+ Designer
+
+
+ True
+ Resources.resx
+
+
+ SettingsSingleFileGenerator
+ Settings.Designer.cs
+
+
+ True
+ Settings.settings
+ True
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/Cancellation/Form1.Designer.cs b/Cancellation/Form1.Designer.cs
new file mode 100644
index 0000000..35d5537
--- /dev/null
+++ b/Cancellation/Form1.Designer.cs
@@ -0,0 +1,134 @@
+namespace Cancellation
+{
+ partial class Form1
+ {
+ ///
+ /// Required designer variable.
+ ///
+ private System.ComponentModel.IContainer components = null;
+
+ ///
+ /// Clean up any resources being used.
+ ///
+ /// true if managed resources should be disposed; otherwise, false.
+ protected override void Dispose(bool disposing)
+ {
+ if (disposing && (components != null))
+ {
+ components.Dispose();
+ }
+ base.Dispose(disposing);
+ }
+
+ #region Windows Form Designer generated code
+
+ ///
+ /// Required method for Designer support - do not modify
+ /// the contents of this method with the code editor.
+ ///
+ private void InitializeComponent()
+ {
+ this.maxValueTxt = new System.Windows.Forms.TextBox();
+ this.label1 = new System.Windows.Forms.Label();
+ this.calculateBtn = new System.Windows.Forms.Button();
+ this.label2 = new System.Windows.Forms.Label();
+ this.largestPrimeTxt = new System.Windows.Forms.TextBox();
+ this.calculatingLbl = new System.Windows.Forms.Label();
+ this.cancelBtn = new System.Windows.Forms.Button();
+ this.SuspendLayout();
+ //
+ // maxValueTxt
+ //
+ this.maxValueTxt.Location = new System.Drawing.Point(150, 33);
+ this.maxValueTxt.Name = "maxValueTxt";
+ this.maxValueTxt.Size = new System.Drawing.Size(227, 26);
+ this.maxValueTxt.TabIndex = 0;
+ //
+ // label1
+ //
+ this.label1.AutoSize = true;
+ this.label1.Location = new System.Drawing.Point(92, 36);
+ this.label1.Name = "label1";
+ this.label1.Size = new System.Drawing.Size(38, 20);
+ this.label1.TabIndex = 1;
+ this.label1.Text = "Max";
+ //
+ // calculateBtn
+ //
+ this.calculateBtn.Font = new System.Drawing.Font("Microsoft Sans Serif", 8F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
+ this.calculateBtn.Location = new System.Drawing.Point(278, 75);
+ this.calculateBtn.Name = "calculateBtn";
+ this.calculateBtn.Size = new System.Drawing.Size(99, 37);
+ this.calculateBtn.TabIndex = 2;
+ this.calculateBtn.Text = "Calculate";
+ this.calculateBtn.UseVisualStyleBackColor = true;
+ this.calculateBtn.Click += new System.EventHandler(this.calculateBtn_Click);
+ //
+ // label2
+ //
+ this.label2.AutoSize = true;
+ this.label2.Location = new System.Drawing.Point(23, 190);
+ this.label2.Name = "label2";
+ this.label2.Size = new System.Drawing.Size(107, 20);
+ this.label2.TabIndex = 3;
+ this.label2.Text = "Largest Prime";
+ //
+ // largestPrimeTxt
+ //
+ this.largestPrimeTxt.Location = new System.Drawing.Point(150, 187);
+ this.largestPrimeTxt.Name = "largestPrimeTxt";
+ this.largestPrimeTxt.Size = new System.Drawing.Size(227, 26);
+ this.largestPrimeTxt.TabIndex = 4;
+ //
+ // calculatingLbl
+ //
+ this.calculatingLbl.AutoSize = true;
+ this.calculatingLbl.Location = new System.Drawing.Point(223, 147);
+ this.calculatingLbl.Name = "calculatingLbl";
+ this.calculatingLbl.Size = new System.Drawing.Size(103, 20);
+ this.calculatingLbl.TabIndex = 5;
+ this.calculatingLbl.Text = "Calculating ...";
+ this.calculatingLbl.Visible = false;
+ //
+ // cancelBtn
+ //
+ this.cancelBtn.Enabled = false;
+ this.cancelBtn.Location = new System.Drawing.Point(183, 75);
+ this.cancelBtn.Name = "cancelBtn";
+ this.cancelBtn.Size = new System.Drawing.Size(89, 37);
+ this.cancelBtn.TabIndex = 6;
+ this.cancelBtn.Text = "Cancel";
+ this.cancelBtn.UseVisualStyleBackColor = true;
+ this.cancelBtn.Click += new System.EventHandler(this.cancelBtn_Click);
+ //
+ // Form1
+ //
+ this.AutoScaleDimensions = new System.Drawing.SizeF(9F, 20F);
+ this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+ this.ClientSize = new System.Drawing.Size(410, 241);
+ this.Controls.Add(this.cancelBtn);
+ this.Controls.Add(this.calculatingLbl);
+ this.Controls.Add(this.largestPrimeTxt);
+ this.Controls.Add(this.label2);
+ this.Controls.Add(this.calculateBtn);
+ this.Controls.Add(this.label1);
+ this.Controls.Add(this.maxValueTxt);
+ this.Name = "Form1";
+ this.Text = "Prime Calculator";
+ this.ResumeLayout(false);
+ this.PerformLayout();
+
+ }
+
+ #endregion
+
+ private System.Windows.Forms.TextBox maxValueTxt;
+ private System.Windows.Forms.Label label1;
+ private System.Windows.Forms.Button calculateBtn;
+ private System.Windows.Forms.Label label2;
+ private System.Windows.Forms.TextBox largestPrimeTxt;
+ private System.Windows.Forms.Label calculatingLbl;
+ private System.Windows.Forms.Button cancelBtn;
+ }
+}
+
diff --git a/Cancellation/Form1.cs b/Cancellation/Form1.cs
new file mode 100644
index 0000000..57e629e
--- /dev/null
+++ b/Cancellation/Form1.cs
@@ -0,0 +1,91 @@
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace Cancellation
+{
+ public partial class Form1 : Form
+ {
+ CancellationTokenSource cts;
+
+ public Form1()
+ {
+ InitializeComponent();
+ }
+
+ private void calculateBtn_Click(object sender, EventArgs e)
+ {
+ cts = new CancellationTokenSource(TimeSpan.FromSeconds(30));
+ var token = cts.Token;
+
+ Task.Run(() =>
+ {
+ long max = -1;
+ this.Invoke((Action)(() =>
+ {
+ largestPrimeTxt.Clear();
+ calculateBtn.Enabled = false;
+ cancelBtn.Enabled = true;
+ calculatingLbl.Visible = true;
+ max = long.Parse(this.maxValueTxt.Text);
+ }));
+
+ long prime = -1;
+ try
+ {
+ prime = FindLargestPrimeNumber(max, token);
+ }
+ catch (OperationCanceledException)
+ { }
+
+ this.Invoke((Action) (() =>
+ {
+ calculateBtn.Enabled = true;
+ cancelBtn.Enabled = false;
+ calculatingLbl.Visible = false;
+
+ if (prime != -1)
+ {
+ largestPrimeTxt.Text = prime.ToString();
+ }
+ }));
+
+ cts.Dispose();
+ }, token);
+ }
+
+ private long FindLargestPrimeNumber(long max, CancellationToken token = default(CancellationToken))
+ {
+ var result = 1;
+ for (int i = 2; i <= max; i++)
+ {
+ token.ThrowIfCancellationRequested();
+ if (IsPrime(i, token))
+ {
+ result = i;
+ }
+ }
+ return result;
+ }
+
+ private bool IsPrime(int num, CancellationToken token = default(CancellationToken))
+ {
+ for (int i = 2; i < num; i++)
+ {
+ token.ThrowIfCancellationRequested();
+ if (num % i == 0)
+ {
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ private void cancelBtn_Click(object sender, EventArgs e)
+ {
+ cts.Cancel();
+ }
+ }
+}
diff --git a/Cancellation/Form1.resx b/Cancellation/Form1.resx
new file mode 100644
index 0000000..1af7de1
--- /dev/null
+++ b/Cancellation/Form1.resx
@@ -0,0 +1,120 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ text/microsoft-resx
+
+
+ 2.0
+
+
+ System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
+
+
+ System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
+
+
\ No newline at end of file
diff --git a/Cancellation/Program.cs b/Cancellation/Program.cs
new file mode 100644
index 0000000..f76f3a4
--- /dev/null
+++ b/Cancellation/Program.cs
@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace Cancellation
+{
+ static class Program
+ {
+ ///
+ /// The main entry point for the application.
+ ///
+ [STAThread]
+ static void Main()
+ {
+ Application.EnableVisualStyles();
+ Application.SetCompatibleTextRenderingDefault(false);
+ Application.Run(new Form1());
+ }
+ }
+}
diff --git a/Cancellation/Properties/AssemblyInfo.cs b/Cancellation/Properties/AssemblyInfo.cs
new file mode 100644
index 0000000..fad4ca0
--- /dev/null
+++ b/Cancellation/Properties/AssemblyInfo.cs
@@ -0,0 +1,36 @@
+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("Cancellation")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("Cancellation")]
+[assembly: AssemblyCopyright("Copyright © 2019")]
+[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("af200868-81b6-45e4-a5cd-3f14afa403a7")]
+
+// 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 Build and Revision Numbers
+// by using the '*' as shown below:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]
diff --git a/Cancellation/Properties/Resources.Designer.cs b/Cancellation/Properties/Resources.Designer.cs
new file mode 100644
index 0000000..66da1a9
--- /dev/null
+++ b/Cancellation/Properties/Resources.Designer.cs
@@ -0,0 +1,71 @@
+//------------------------------------------------------------------------------
+//
+// This code was generated by a tool.
+// Runtime Version:4.0.30319.42000
+//
+// Changes to this file may cause incorrect behavior and will be lost if
+// the code is regenerated.
+//
+//------------------------------------------------------------------------------
+
+namespace Cancellation.Properties
+{
+
+
+ ///
+ /// A strongly-typed resource class, for looking up localized strings, etc.
+ ///
+ // This class was auto-generated by the StronglyTypedResourceBuilder
+ // class via a tool like ResGen or Visual Studio.
+ // To add or remove a member, edit your .ResX file then rerun ResGen
+ // with the /str option, or rebuild your VS project.
+ [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "4.0.0.0")]
+ [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+ [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+ internal class Resources
+ {
+
+ private static global::System.Resources.ResourceManager resourceMan;
+
+ private static global::System.Globalization.CultureInfo resourceCulture;
+
+ [global::System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
+ internal Resources()
+ {
+ }
+
+ ///
+ /// Returns the cached ResourceManager instance used by this class.
+ ///
+ [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+ internal static global::System.Resources.ResourceManager ResourceManager
+ {
+ get
+ {
+ if ((resourceMan == null))
+ {
+ global::System.Resources.ResourceManager temp = new global::System.Resources.ResourceManager("Cancellation.Properties.Resources", typeof(Resources).Assembly);
+ resourceMan = temp;
+ }
+ return resourceMan;
+ }
+ }
+
+ ///
+ /// Overrides the current thread's CurrentUICulture property for all
+ /// resource lookups using this strongly typed resource class.
+ ///
+ [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+ internal static global::System.Globalization.CultureInfo Culture
+ {
+ get
+ {
+ return resourceCulture;
+ }
+ set
+ {
+ resourceCulture = value;
+ }
+ }
+ }
+}
diff --git a/Cancellation/Properties/Resources.resx b/Cancellation/Properties/Resources.resx
new file mode 100644
index 0000000..af7dbeb
--- /dev/null
+++ b/Cancellation/Properties/Resources.resx
@@ -0,0 +1,117 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ text/microsoft-resx
+
+
+ 2.0
+
+
+ System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
+
+
+ System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
+
+
\ No newline at end of file
diff --git a/Cancellation/Properties/Settings.Designer.cs b/Cancellation/Properties/Settings.Designer.cs
new file mode 100644
index 0000000..c3a64d9
--- /dev/null
+++ b/Cancellation/Properties/Settings.Designer.cs
@@ -0,0 +1,30 @@
+//------------------------------------------------------------------------------
+//
+// This code was generated by a tool.
+// Runtime Version:4.0.30319.42000
+//
+// Changes to this file may cause incorrect behavior and will be lost if
+// the code is regenerated.
+//
+//------------------------------------------------------------------------------
+
+namespace Cancellation.Properties
+{
+
+
+ [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+ [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "11.0.0.0")]
+ internal sealed partial class Settings : global::System.Configuration.ApplicationSettingsBase
+ {
+
+ private static Settings defaultInstance = ((Settings)(global::System.Configuration.ApplicationSettingsBase.Synchronized(new Settings())));
+
+ public static Settings Default
+ {
+ get
+ {
+ return defaultInstance;
+ }
+ }
+ }
+}
diff --git a/Cancellation/Properties/Settings.settings b/Cancellation/Properties/Settings.settings
new file mode 100644
index 0000000..3964565
--- /dev/null
+++ b/Cancellation/Properties/Settings.settings
@@ -0,0 +1,7 @@
+
+
+
+
+
+
+