private void Cancel_Click(object sender, EventArgs e)
        {
            Hide();
            EmployeeDetails f2 = new EmployeeDetails();

            f2.Show();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            SqlConnection vcn = new SqlConnection();

            try
            {
                int    eid     = int.Parse(Eid.Text);
                string fname   = Fname.Text;
                string lname   = Lname.Text;
                int    age     = int.Parse(Age.Text);
                string email   = Email.Text;
                long   phoneNo = long.Parse(PhoneNo.Text);

                vcn.ConnectionString = "Data Source=DESKTOP-0KJOSO5;Initial Catalog=master;Integrated Security=True";

                SqlCommand cmd = new SqlCommand();

                cmd.CommandText = "insert into [dbo].[employee_data] values(" + eid + "," + "'" + fname + "'" + "," + "'" + lname + "'" + "," + age + "," + "'" + email + "'" + "," + phoneNo + ")";

                cmd.CommandType = CommandType.Text;
                cmd.Connection  = vcn;

                vcn.Open();
                int result = cmd.ExecuteNonQuery();
                MessageBox.Show(result.ToString() + "row affected");

                Hide();
                EmployeeDetails f2 = new EmployeeDetails();
                f2.Show();
            }
            catch (SqlException ex)
            {
                MessageBox.Show(ex.Message);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
            finally
            {
                if (vcn.State == ConnectionState.Open)
                {
                    vcn.Close();
                }
            }
        }