My Update button is not working. my database is XAMPP language c# : **This is my code for the update button.**
    private void btnSave_Click(object sender, EventArgs e)
        {
            MySqlConnection con = new MySqlConnection(MyConnectionString);
            MySqlCommand cmd;
            con.Open();

            if (txtFN.Text != "" && txtMN.Text != "" && txtLN.Text != "" && txtAge.Text != "" && txtReligion.Text != "" && cmbGender.Text != "" && dateTimePicker1.Text != "" && cmbGrade.Text != "" && cmbStrands.Text != "" && txtPlaceBirth.Text != "" && txtHomeAddress.Text != "" && txtNameLastSchool.Text != "" && txtAddressLastSchool.Text != "")
            {
                cmd = new MySqlCommand("UPDATE tbluser set FirstName, MiddleName, LastName, Age, Religion, Gender, BirthDay, Grade, Strand, PlaceBirth, HomeAddress, NameLastSchool, AddressLastSchool) values (@fname, @mname, @Lname, @Age, @Religion, @Gender, @Birthday, @Grade, @Strand, @PlaceBirth, @HomeAddress, @NameLastSchool, @AddressLastSchool", con);
                cmd.Parameters.AddWithValue("@fname", txtFN.Text);
                cmd.Parameters.AddWithValue("@Mname", txtMN.Text);
                cmd.Parameters.AddWithValue("@Lname", txtLN.Text);
                cmd.Parameters.AddWithValue("@Age", txtAge.Text);
                cmd.Parameters.AddWithValue("@Religion", txtReligion.Text);
                cmd.Parameters.AddWithValue("@Gender", cmbGender.Text);
                cmd.Parameters.AddWithValue("@Birthday", dateTimePicker1.Text);
                cmd.Parameters.AddWithValue("@Grade", cmbGrade.Text);
                cmd.Parameters.AddWithValue("@Strand", cmbStrands.Text);
                cmd.Parameters.AddWithValue("@PlaceBirth", txtPlaceBirth.Text);
                cmd.Parameters.AddWithValue("@HomeAddress", txtHomeAddress.Text);
                cmd.Parameters.AddWithValue("@NameLastSchool", txtNameLastSchool.Text);
                cmd.Parameters.AddWithValue("@AddressLastSchool", txtAddressLastSchool.Text);
                cmd.ExecuteNonQuery();
                con.Close(); 
                MessageBox.Show("Record Updated Successfully"); 
                MessageBox.Show("Please Select Record to Update");
            }  
        }