diff --git a/TestWins/Form1.cs b/TestWins/Form1.cs
index fcefc88..8fbab1c 100644
--- a/TestWins/Form1.cs
+++ b/TestWins/Form1.cs
@@ -6,8 +6,8 @@ namespace TestWins;
 public partial class Form1 : Form
 {
     //business
-
     private readonly StudentController controller = new StudentController();
+
     public Form1()
     {
         InitializeComponent();
@@ -18,26 +18,60 @@ private void loadData()
     {
         dataGridView1.DataSource = controller.getAll();
     }
-
     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)
     {
+        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 = "";
     }
 }
diff --git a/TestWins/repository/StudentRepository.cs b/TestWins/repository/StudentRepository.cs
index a823e74..bb06d47 100644
--- a/TestWins/repository/StudentRepository.cs
+++ b/TestWins/repository/StudentRepository.cs
@@ -16,7 +16,7 @@ public void create(Student student)
         using var conn = _db.connectSql(); //Connection
         conn.Open(); //Open Connection
 
-        string query = "INSERT INTO students VALUES(@name, @age, @course)";
+        string query = "INSERT INTO (name, age, course) students VALUES(@name, @age, @course)";
 
         using var cmd = new MySqlCommand(query, conn);
 
@@ -56,7 +56,7 @@ public void update(Student student)
         using var conn = _db.connectSql();
         conn.Open();
 
-        string query = "UPDATE students SET name = @name, age=@age, course=@course where studentId = @ID";
+        string query = "UPDATE students SET name=@name, age=@age, course=@course where studentId = @id";
 
         using var cmd = new MySqlCommand(query, conn);
 
@@ -82,4 +82,4 @@ public void delete(string id)
         cmd.ExecuteNonQuery();
     }
 
-}
\ No newline at end of file
+}