diff --git a/VisualComponentsForm/VisualComponentsForm/FormMain.Designer.cs b/VisualComponentsForm/VisualComponentsForm/FormMain.Designer.cs
index fe562b3..428f4d9 100644
--- a/VisualComponentsForm/VisualComponentsForm/FormMain.Designer.cs
+++ b/VisualComponentsForm/VisualComponentsForm/FormMain.Designer.cs
@@ -36,9 +36,9 @@
             buttonClear = new Button();
             groupBox = new GroupBox();
             groupBox1 = new GroupBox();
+            myTextBox = new VisualComponentsLib.MyTextBox();
             labelCheckTwo = new Label();
             buttonCheckTwo = new Button();
-            myTextBox = new VisualComponentsLib.MyTextBox();
             groupBox.SuspendLayout();
             groupBox1.SuspendLayout();
             SuspendLayout();
@@ -116,9 +116,9 @@
             // 
             // groupBox1
             // 
+            groupBox1.Controls.Add(myTextBox);
             groupBox1.Controls.Add(labelCheckTwo);
             groupBox1.Controls.Add(buttonCheckTwo);
-            groupBox1.Controls.Add(myTextBox);
             groupBox1.Location = new Point(386, 12);
             groupBox1.Name = "groupBox1";
             groupBox1.Size = new Size(342, 106);
@@ -126,6 +126,13 @@
             groupBox1.TabStop = false;
             groupBox1.Text = "Второй компонент";
             // 
+            // myTextBox
+            // 
+            myTextBox.Location = new Point(6, 20);
+            myTextBox.Name = "myTextBox";
+            myTextBox.Size = new Size(210, 80);
+            myTextBox.TabIndex = 5;
+            // 
             // labelCheckTwo
             // 
             labelCheckTwo.AutoSize = true;
@@ -146,14 +153,6 @@
             buttonCheckTwo.UseVisualStyleBackColor = true;
             buttonCheckTwo.Click += ButtonCheckTwo_Click;
             // 
-            // myTextBox
-            // 
-            myTextBox.Value = "";
-            myTextBox.Location = new Point(6, 19);
-            myTextBox.Name = "myTextBox";
-            myTextBox.Size = new Size(210, 84);
-            myTextBox.TabIndex = 0;
-            // 
             // FormMain
             // 
             AutoScaleDimensions = new SizeF(7F, 15F);
@@ -162,7 +161,7 @@
             Controls.Add(groupBox1);
             Controls.Add(groupBox);
             Name = "FormMain";
-            Text = "Form1";
+            Text = "Тестовое окно";
             groupBox.ResumeLayout(false);
             groupBox.PerformLayout();
             groupBox1.ResumeLayout(false);
@@ -179,8 +178,8 @@
         private Button buttonClear;
         private GroupBox groupBox;
         private GroupBox groupBox1;
-        private VisualComponentsLib.MyTextBox myTextBox;
         private Label labelCheckTwo;
         private Button buttonCheckTwo;
+        private VisualComponentsLib.MyTextBox myTextBox;
     }
 }
\ No newline at end of file
diff --git a/VisualComponentsForm/VisualComponentsForm/FormMain.cs b/VisualComponentsForm/VisualComponentsForm/FormMain.cs
index e47b579..18e2f22 100644
--- a/VisualComponentsForm/VisualComponentsForm/FormMain.cs
+++ b/VisualComponentsForm/VisualComponentsForm/FormMain.cs
@@ -28,9 +28,9 @@ namespace VisualComponentsForm
         {
             try
             {
-                labelCheckTwo.Text = myTextBox.Value;
+                labelCheckTwo.Text = myTextBox.TextBoxValue;
             }
-            catch(Exception ex)
+            catch (Exception ex)
             {
                 MessageBox.Show(ex.Message);
             }
diff --git a/VisualComponentsLib/MyTextBox.Designer.cs b/VisualComponentsLib/MyTextBox.Designer.cs
index dd15c2d..fd2d1d8 100644
--- a/VisualComponentsLib/MyTextBox.Designer.cs
+++ b/VisualComponentsLib/MyTextBox.Designer.cs
@@ -42,7 +42,7 @@
             checkBox.TabIndex = 0;
             checkBox.Text = "Включить null";
             checkBox.UseVisualStyleBackColor = true;
-            checkBox.CheckedChanged += CheckBox_CheckedChanged;
+            checkBox.CheckedChanged += CheckBox_CheckedChanged_1;
             // 
             // textBox
             // 
@@ -50,7 +50,7 @@
             textBox.Name = "textBox";
             textBox.Size = new Size(182, 23);
             textBox.TabIndex = 2;
-            textBox.KeyPress += TextBox_KeyPress;
+            textBox.TextChanged += TextBox_TextChanged;
             // 
             // MyTextBox
             // 
diff --git a/VisualComponentsLib/MyTextBox.cs b/VisualComponentsLib/MyTextBox.cs
index ef59e94..2e75808 100644
--- a/VisualComponentsLib/MyTextBox.cs
+++ b/VisualComponentsLib/MyTextBox.cs
@@ -5,6 +5,7 @@ using System.Data;
 using System.Drawing;
 using System.Linq;
 using System.Text;
+using System.Text.RegularExpressions;
 using System.Threading.Tasks;
 using System.Windows.Forms;
 using VisualComponentsLib.CustomException;
@@ -13,38 +14,44 @@ namespace VisualComponentsLib
 {
     public partial class MyTextBox : UserControl
     {
-        public string? Value
+        public string? TextBoxValue
         {
             get
             {
-                if (textBox.Text.Length <= 2 && !checkBox.Checked)
+                if (checkBox.Checked)
                 {
-                    return new TextBoxException("Error").Message;
+                    return null;
                 }
-                else
+
+                if (textBox.Text.Length <= 2)
                 {
-                    if(double.TryParse(textBox.Text, out double value))
-                    {
-                        return textBox.Text;
-                    }
-                    
-                    return new TextBoxException("Error").ToString();
+                    throw new TextBoxException("Число не введено");
                 }
+
+                if (textBox.Text.Contains('.') && textBox.Text.IndexOf('.') != textBox.Text.Length - 1)
+                {
+                    return textBox.Text;
+                }
+
+                throw new TextBoxException("Некорретный формат числа");
             }
 
             set
             {
-                if(value != null)
+                if (!checkBox.Checked && value == null)
                 {
-                    textBox.Text = value.ToString();
-                }
-                else
-                {
-                    textBox.Text = null;
+                    throw new TextBoxException("Недопустимое значение null");
                 }
+
+                textBox.Text = value;
             }
         }
 
+        public MyTextBox()
+        {
+            InitializeComponent();
+        }
+
         private EventHandler _textChanged;
 
         public new event EventHandler? TextChanged
@@ -53,12 +60,7 @@ namespace VisualComponentsLib
             remove => _textChanged -= value;
         }
 
-        public MyTextBox()
-        {
-            InitializeComponent();
-        }
-
-        private void CheckBox_CheckedChanged(object sender, EventArgs e)
+        private void CheckBox_CheckedChanged_1(object sender, EventArgs e)
         {
             if (textBox.ReadOnly == true)
             {
@@ -67,26 +69,12 @@ namespace VisualComponentsLib
             else
             {
                 textBox.ReadOnly = true;
-
-                Value = null;
-
-                textBox.Text = string.Empty;
             }
         }
 
-        private void TextBox_KeyPress(object sender, KeyPressEventArgs e)
+        private void TextBox_TextChanged(object sender, EventArgs e)
         {
-            // Проверяем, является ли введенный символ цифрой, точкой или клавишей Backspace
-            if (!char.IsControl(e.KeyChar) && !char.IsDigit(e.KeyChar) && e.KeyChar != '.')
-            {
-                e.Handled = true;
-            }
-
-            // Проверяем, является ли точка уже введенной и не находится ли она на первой позиции
-            if (e.KeyChar == '.' && (sender as TextBox).Text.IndexOf('.') > -1)
-            {
-                e.Handled = true;
-            }
+            _textChanged?.Invoke(sender, e);
         }
     }
 }