//UPDATE SURVEYOR DATA
        private void SurveyorDataUpadate()
        {
            try
            {
                if (//CHECK TEXBOXES NOT NULL OR EMPTY
                    String.IsNullOrWhiteSpace(txtEmpRegNo.Text) ||
                    String.IsNullOrWhiteSpace(txtName.Text) ||
                    String.IsNullOrWhiteSpace(cbxSurveyorType.Text) ||
                    String.IsNullOrWhiteSpace(txtMobile.Text) ||
                    String.IsNullOrWhiteSpace(txtEmail.Text)
                    )
                {
                    MessageBox.Show("You must be filling all field!.", "Surveyor Registration", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
                else
                {
                    objClassBLL = new SurveyorClassBLL()
                    {
                        date          = DateTime.Today,
                        emp_reg_no    = txtEmpRegNo.Text,
                        initail_name  = txtName.Text,
                        surveyor_type = cbxSurveyorType.Text.ToString(),
                        mobile        = txtMobile.Text,
                        email         = txtEmail.Text,
                        division      = _division,
                        username      = _username
                    };

                    //UPDATE USER DATA
                    objClassBLL.UpdateSurveyor();
                    MessageBox.Show("Surveyor Update successfully!", "Surveyor Update", MessageBoxButtons.OK, MessageBoxIcon.Information);

                    //CLEAR ALL TEXBOX AND COMBOBOX
                    ClearTextBoxces();

                    //LOAD USER DATA
                    LoadDataDgv();

                    //SET TO BUTTON TEXT Add
                    btnAdd.Text = "Add";

                    txtEmpRegNo.Enabled = true;
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "SURVEYOR ERROR", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }