diff --git a/HomeWork16/HomeWork16.sln b/HomeWork16/HomeWork16.sln
new file mode 100644
index 0000000..123bcf8
--- /dev/null
+++ b/HomeWork16/HomeWork16.sln
@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.8.34330.188
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "HomeWork16", "HomeWork16\HomeWork16.csproj", "{06850D53-AB66-49E1-B8E5-A526298E8098}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{06850D53-AB66-49E1-B8E5-A526298E8098}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{06850D53-AB66-49E1-B8E5-A526298E8098}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{06850D53-AB66-49E1-B8E5-A526298E8098}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{06850D53-AB66-49E1-B8E5-A526298E8098}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {2782D84C-2B16-4A80-863F-A156C3A9BE16}
+	EndGlobalSection
+EndGlobal
diff --git a/HomeWork16/HomeWork16/Enums/State.cs b/HomeWork16/HomeWork16/Enums/State.cs
new file mode 100644
index 0000000..3273f48
--- /dev/null
+++ b/HomeWork16/HomeWork16/Enums/State.cs
@@ -0,0 +1,7 @@
+namespace HomeWork16.Enums;
+
+public enum State
+{
+    OK,
+    Cancel
+}
diff --git a/HomeWork16/HomeWork16/HomeWork16.csproj b/HomeWork16/HomeWork16/HomeWork16.csproj
new file mode 100644
index 0000000..2150e37
--- /dev/null
+++ b/HomeWork16/HomeWork16/HomeWork16.csproj
@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>
diff --git a/HomeWork16/HomeWork16/MessageBox.cs b/HomeWork16/HomeWork16/MessageBox.cs
new file mode 100644
index 0000000..d8c477f
--- /dev/null
+++ b/HomeWork16/HomeWork16/MessageBox.cs
@@ -0,0 +1,22 @@
+using HomeWork16.Enums;
+
+namespace HomeWork16;
+
+public delegate void MessageBoxDelegate (State state);
+
+internal class MessageBox
+{
+    public event MessageBoxDelegate? NotifyState;
+    public async Task OpenAsync()
+    {
+        Console.WriteLine("Window is open");
+
+        await Task.Delay(3000);
+
+        Console.WriteLine("Window was closed by the user");
+
+        var randomState = (State)new Random().Next(0, 2);
+
+        NotifyState?.Invoke(randomState);
+    }
+}
diff --git a/HomeWork16/HomeWork16/Program.cs b/HomeWork16/HomeWork16/Program.cs
new file mode 100644
index 0000000..915e50e
--- /dev/null
+++ b/HomeWork16/HomeWork16/Program.cs
@@ -0,0 +1,27 @@
+using HomeWork16.Enums;
+
+namespace HomeWork16;
+
+internal class Program
+{
+    static void Main(string[] args)
+    {
+        var messageBox = new MessageBox();
+
+        messageBox.NotifyState += (State state) =>
+        {
+            if (state == State.OK)
+            {
+                Console.WriteLine($"{state} - the operation has been confirmed");
+            }
+            else
+            {
+                Console.WriteLine($"{state} - the operation was rejected");
+            }
+        };
+
+        var task = Task.Run(() => messageBox.OpenAsync());
+
+        task.Wait();
+    }
+}