diff --git a/TestWins/Form1.Designer.cs b/TestWins/Form1.Designer.cs
index eb976a2..05a2314 100644
--- a/TestWins/Form1.Designer.cs
+++ b/TestWins/Form1.Designer.cs
@@ -50,6 +50,7 @@ private void InitializeComponent()
         this.txtName = new System.Windows.Forms.TextBox();
         this.txtAge = new System.Windows.Forms.TextBox();
         this.txtCourse = new System.Windows.Forms.TextBox();
+        this.txtStudentId = new System.Windows.Forms.TextBox();
 
         this.btnAdd = new System.Windows.Forms.Button();
         this.btnUpdate = new System.Windows.Forms.Button();
@@ -91,6 +92,10 @@ private void InitializeComponent()
         this.txtCourse.Size = new System.Drawing.Size(200, 23);
         this.txtCourse.PlaceholderText = "Course";
 
+        this.txtStudentId.Location = new System.Drawing.Point(20, 70);
+        this.txtStudentId.Size = new System.Drawing.Size(200, 23);
+        this.txtStudentId.PlaceholderText = "Student ID";
+
 
         // ===============
         // BUTTONS
diff --git a/TestWins/Form1.cs b/TestWins/Form1.cs
index fcefc88..37a3047 100644
--- a/TestWins/Form1.cs
+++ b/TestWins/Form1.cs
@@ -1,13 +1,11 @@
+using System.Windows.Forms;
 using System.Drawing.Text;
 using TestWins.Controller;
-
 namespace TestWins;
-
 public partial class Form1 : Form
 {
-    //business
-
     private readonly StudentController controller = new StudentController();
+
     public Form1()
     {
         InitializeComponent();
@@ -21,23 +19,56 @@ private void loadData()
 
     private void btnAdd_Click(object sender, EventArgs e)
     {
-
+        var student = new TestWins.Model.Student
+        {
+            studentId = txtStudentId.Text,
+            Name = txtName.Text,
+            age = int.Parse(txtAge.Text),
+            course = txtCourse.Text
+        };
+        controller.createStudent(student);
+        loadData();
+        clearFields();
     }
 
     private void btnUpdate_Click(object sender, EventArgs e)
     {
-
+        var student = new TestWins.Model.Student
+        {
+            studentId = txtStudentId.Text,
+            Name = txtName.Text,
+            age = int.Parse(txtAge.Text),
+            course = txtCourse.Text
+        };
+        controller.update(student);
+        loadData();
+        clearFields();
     }
 
     private void btnDelete_Click(object sender, EventArgs e)
     {
-
-
-
+        controller.delete(txtStudentId.Text);
+        loadData();
+        clearFields();
     }
 
-    private void dataGridView1_CellClick(object sender, EventArgs e)
+    private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
     {
+        if (dataGridView1.CurrentRow != null)
+        {
+            DataGridViewRow row = dataGridView1.CurrentRow;
+            txtStudentId.Text = row.Cells[0].Value.ToString();
+            txtName.Text = row.Cells[1].Value.ToString();
+            txtAge.Text = row.Cells[2].Value.ToString();
+            txtCourse.Text = row.Cells[3].Value.ToString();
+        }
+    }
 
+    private void clearFields()
+    {
+        txtStudentId.Text = "";
+        txtName.Text = "";
+        txtAge.Text = "";
+        txtCourse.Text = "";
     }
 }