diff --git a/CSHARP/Lessons.md b/CSHARP/Lessons.md
index 6d304c4..66ed355 100644
--- a/CSHARP/Lessons.md
+++ b/CSHARP/Lessons.md
@@ -20,4 +20,73 @@ class Person
     }
 }
 
-=== ===
\ No newline at end of file
+=== Конструкторы, инициализаторы и деконструкторы ===
+
+Person tom = new Person();
+Person bob = new Person("Bob");
+Person sam = new Person("Sam", 25);
+tom.Print();
+bob.Print();
+sam.Print();
+
+class Person
+{
+    public string name;
+    public int age;
+    public Person()
+    {
+        name = "Unknown";
+        age = 18;
+    }
+    public Person(string n) { name = n; age = 18; }
+    public Person(string n, int a) { name = n;  age = a; }
+
+    public void Print()
+    {
+        Console.WriteLine($"name: {name} age: {age}");
+    }
+
+}
+
+
+Person sam = new Person("Sam", 25);
+sam.Print();
+
+class Person
+{
+    public string name;
+    public int age;
+    public Person()
+    {
+        name = "Unknown";
+        age = 18;
+    }
+    public Person(string name) { this.name = name; age = 18; }
+    public Person(string name, int age)
+    {
+        this.name = name;
+        this.age = age;
+    }
+    public void Print()
+    {
+        Console.WriteLine($"name: {name} age: {age}");
+    }
+}
+
+"Цепочка вызова конструкторов"
+Person sam = new Person("Sam", 25);
+sam.Print();
+
+class Person
+{
+    public string name;
+    public int age;
+    public Person() : this("Unknown") { }
+    public Person(string name) : this(name, 18) { }
+    public Person(string name, int age)
+    {
+        this.name = name;
+        this.age = age;
+    }
+    public void Print() => Console.WriteLine($"Name: {name} Age: {age}");
+}
\ No newline at end of file
diff --git a/CSHARP/Program.cs b/CSHARP/Program.cs
index d3f2321..6f7e0e6 100644
--- a/CSHARP/Program.cs
+++ b/CSHARP/Program.cs
@@ -1,19 +1,16 @@
-Person tom = new Person();
-string personName = tom.name;
-int personAge = tom.age;
-Console.WriteLine($"name: {personName} age: {personAge}");
-
-tom.name = "Tom";
-tom.age = 37;
-tom.Print();
+Person sam = new Person("Sam", 25);
+sam.Print();
 
 class Person
 {
-    public string name = "Undefined";
+    public string name;
     public int age;
-
-    public void Print()
+    public Person() : this("Unknown") { }
+    public Person(string name) : this(name, 18) { }
+    public Person(string name, int age)
     {
-        Console.WriteLine($"Имя: {name} Возраст: {age}");
+        this.name = name;
+        this.age = age;
     }
+    public void Print() => Console.WriteLine($"Name: {name} Age: {age}");
 }
\ No newline at end of file
diff --git a/CSHARP/bin/Debug/net9.0/CSHARP.dll b/CSHARP/bin/Debug/net9.0/CSHARP.dll
index 8b40bd9..651f8dc 100644
Binary files a/CSHARP/bin/Debug/net9.0/CSHARP.dll and b/CSHARP/bin/Debug/net9.0/CSHARP.dll differ
diff --git a/CSHARP/bin/Debug/net9.0/CSHARP.exe b/CSHARP/bin/Debug/net9.0/CSHARP.exe
index 895f6f8..4078372 100644
Binary files a/CSHARP/bin/Debug/net9.0/CSHARP.exe and b/CSHARP/bin/Debug/net9.0/CSHARP.exe differ
diff --git a/CSHARP/bin/Debug/net9.0/CSHARP.pdb b/CSHARP/bin/Debug/net9.0/CSHARP.pdb
index e3e5302..eff4e44 100644
Binary files a/CSHARP/bin/Debug/net9.0/CSHARP.pdb and b/CSHARP/bin/Debug/net9.0/CSHARP.pdb differ
diff --git a/CSHARP/obj/Debug/net9.0/CSHARP.AssemblyInfo.cs b/CSHARP/obj/Debug/net9.0/CSHARP.AssemblyInfo.cs
index a3fcc4f..dd4bab4 100644
--- a/CSHARP/obj/Debug/net9.0/CSHARP.AssemblyInfo.cs
+++ b/CSHARP/obj/Debug/net9.0/CSHARP.AssemblyInfo.cs
@@ -13,7 +13,7 @@ using System.Reflection;
 [assembly: System.Reflection.AssemblyCompanyAttribute("CSHARP")]
 [assembly: System.Reflection.AssemblyConfigurationAttribute("Debug")]
 [assembly: System.Reflection.AssemblyFileVersionAttribute("1.0.0.0")]
-[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0+aa050c247f6147a284a534e34522aed399958c7f")]
+[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0+2101d584f338f6f88ae1a4305d8bd8c1bb8d13cf")]
 [assembly: System.Reflection.AssemblyProductAttribute("CSHARP")]
 [assembly: System.Reflection.AssemblyTitleAttribute("CSHARP")]
 [assembly: System.Reflection.AssemblyVersionAttribute("1.0.0.0")]
diff --git a/CSHARP/obj/Debug/net9.0/CSHARP.AssemblyInfoInputs.cache b/CSHARP/obj/Debug/net9.0/CSHARP.AssemblyInfoInputs.cache
index 2c96909..9850935 100644
--- a/CSHARP/obj/Debug/net9.0/CSHARP.AssemblyInfoInputs.cache
+++ b/CSHARP/obj/Debug/net9.0/CSHARP.AssemblyInfoInputs.cache
@@ -1 +1 @@
-8b42992521c44adabdfff2f0c94aca9302acbb4a3d22a089bd2074043d71fed8
+8e1d40d7011353f00b3998c361926632fbcce86fc7b441528c4e189b70a28f7a
diff --git a/CSHARP/obj/Debug/net9.0/CSHARP.dll b/CSHARP/obj/Debug/net9.0/CSHARP.dll
index 8b40bd9..651f8dc 100644
Binary files a/CSHARP/obj/Debug/net9.0/CSHARP.dll and b/CSHARP/obj/Debug/net9.0/CSHARP.dll differ
diff --git a/CSHARP/obj/Debug/net9.0/CSHARP.pdb b/CSHARP/obj/Debug/net9.0/CSHARP.pdb
index e3e5302..eff4e44 100644
Binary files a/CSHARP/obj/Debug/net9.0/CSHARP.pdb and b/CSHARP/obj/Debug/net9.0/CSHARP.pdb differ
diff --git a/CSHARP/obj/Debug/net9.0/apphost.exe b/CSHARP/obj/Debug/net9.0/apphost.exe
index 895f6f8..4078372 100644
Binary files a/CSHARP/obj/Debug/net9.0/apphost.exe and b/CSHARP/obj/Debug/net9.0/apphost.exe differ
diff --git a/CSHARP/obj/Debug/net9.0/ref/CSHARP.dll b/CSHARP/obj/Debug/net9.0/ref/CSHARP.dll
index 01f285b..df207d6 100644
Binary files a/CSHARP/obj/Debug/net9.0/ref/CSHARP.dll and b/CSHARP/obj/Debug/net9.0/ref/CSHARP.dll differ
diff --git a/CSHARP/obj/Debug/net9.0/refint/CSHARP.dll b/CSHARP/obj/Debug/net9.0/refint/CSHARP.dll
index 01f285b..df207d6 100644
Binary files a/CSHARP/obj/Debug/net9.0/refint/CSHARP.dll and b/CSHARP/obj/Debug/net9.0/refint/CSHARP.dll differ