btn_login_Click

public void btn_login_Click(object sender, EventArgs e)
		{
			try
			{
				if (!string.IsNullOrEmpty(this.txt_username.Text) && !string.IsNullOrEmpty(this.txt_password.Text))
				{
					using (EZYROBOT_ServicesSoapClient ezyrobot_ServicesSoapClient = new EZYROBOT_ServicesSoapClient())
					{
						CUSTOMER customer = JsonConvert.DeserializeObject<CUSTOMER>(ezyrobot_ServicesSoapClient.GetCustomerByUsernamePassword(this.txt_username.Text.ToLower().Trim(), Services.MD5Hash(this.txt_password.Text.Trim())));
						if (customer != null && customer.USERNAME.ToLower().Equals(this.txt_username.Text.ToLower().Trim()))
						{
							if (this.cb_remember.Checked)
							{
								Settings.Default.Username = this.txt_username.Text.Trim();
								Settings.Default.Password = this.txt_password.Text.Trim();
								Settings.Default.Save();
							}
							else if (!string.IsNullOrEmpty(Settings.Default.Username) && !string.IsNullOrEmpty(Settings.Default.Password))
							{
								Settings.Default.Username = string.Empty;
								Settings.Default.Password = string.Empty;
								Settings.Default.Save();
							}
							using (FRM_Main frm_Main = new FRM_Main())
							{
								base.Hide();
								frm_Main.Closed += delegate(object s, EventArgs args)
								{
									base.Close();
								};
								frm_Main.Customer = customer;
								frm_Main.ShowDialog();
								goto IL_246;
							}
						}
						if (this.cb_remember.Checked)
						{
							Settings.Default.Username = this.txt_username.Text.Trim();
							Settings.Default.Password = this.txt_password.Text.Trim();
							Settings.Default.Save();
						}
						else if (!string.IsNullOrEmpty(Settings.Default.Username) && !string.IsNullOrEmpty(Settings.Default.Password))
						{
							Settings.Default.Username = string.Empty;
							Settings.Default.Password = string.Empty;
							Settings.Default.Save();
						}
						using (FRM_Main frm_Main2 = new FRM_Main())
						{
							base.Hide();
							frm_Main2.Closed += delegate(object s, EventArgs args)
							{
								base.Close();
							};
							frm_Main2.Customer = customer;
							frm_Main2.ShowDialog();
						}
						IL_246:
						goto IL_27A;
					}
				}
				this.lbl_status.Text = "กรุณาใส่ข้อมูลให้ครบถ้วน";
				this.lbl_status.Visible = true;
				this.txt_username.Focus();
				IL_27A:;
			}
			catch
			{
				MessageBox.Show("เกิดข้อผิดพลาด กรุณาติดต่อแอดมินพ่อค้าเกมจิปาฐะ", "เกิดข้อผิดพลาด", MessageBoxButtons.OK, MessageBoxIcon.Hand);
			}
		}
	}
}