从一种形式转移到另一种形式

Question

所以我在运行我的代码时试图找出并破坏每个方法，我仍然无法找到为什么setTempID始终为0，我已经为它分配了一个值。

这是我的代码。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.Sql;
using System.Data.SqlClient;

//imports
using DHELTASSys.DataAccess;
using DHELTASSys.Modules;
using DHELTASSys.AuditTrail;

namespace Enrollment
{
    public partial class HRLogin : Form
    {
        HRModuleBL obj = new HRModuleBL();
        DHELTASSysAuditTrail audit = new DHELTASSysAuditTrail();

        public HRLogin()
        {
            InitializeComponent();
        }

        private void txtLogin_Click(object sender, EventArgs e)
        {
            obj.Emp_id = int.Parse(txtEmpID.Text);
            audit.Emp_id = int.Parse(txtEmpID.Text);
            obj.Password = txtPassword.Text;

            if (obj.AccountEnrollmentLogin().Rows.Count == 0) 
            {
                MessageBox.Show("Username and Password is incorrect!");
            }
            else if (obj.CheckIfHRManager().Rows.Count == 0)
            {
                MessageBox.Show("You are not allowed to access this system!");
            }
            else
            {
                CreateAccount frm = new CreateAccount();

                frm.FormClosed += new FormClosedEventHandler(frm_FormClosed);

                audit.AddAuditTrail("Has logged in into the Fingerprint Enrollment System.");

                frm.setEmpID = int.Parse(txtEmpID.Text);

                frm.Show();
                this.Hide();
            }  
        }

        void frm_FormClosed(object sender, FormClosedEventArgs e)
        {
            this.Show();
        }

        private void btnClose_Click(object sender, EventArgs e)
        {
            this.Close();
        }


    }
}

这是另一种形式

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;

//imports
using DHELTASSys.AuditTrail;
using DHELTASSys.Modules;

namespace Enrollment
{
    delegate void Function();   // a simple delegate for marshalling calls from event handlers to the GUI thread

    public partial class CreateAccount : Form
    {
        HRModuleBL obj = new HRModuleBL();
        DHELTASSysAuditTrail audit = new DHELTASSysAuditTrail();

        private int emp_id;

        public int setEmpID
        {
            set { emp_id = value;}
        }

        public CreateAccount()
        {
            InitializeComponent();
        }

        private void CloseButton_Click(object sender, EventArgs e)
        {
            Close();
        }


        private void OnTemplate(DPFP.Template template)
        {
            this.Invoke(new Function(delegate()
            {
                Template = template;
                VerifyButton.Enabled = SaveButton.Enabled = (Template != null);
                if (Template != null)
                    MessageBox.Show("The fingerprint template is ready for verification and saving", "Fingerprint Enrollment");
                else
                    MessageBox.Show("The fingerprint template is not valid. Repeat fingerprint enrollment.", "Fingerprint Enrollment");
            }));
        }

        private DPFP.Template Template;








        private void EnrollButton_Click(object sender, EventArgs e)
        {
            EnrollmentForm Enroller = new EnrollmentForm();
            Enroller.OnTemplate += this.OnTemplate;
            Enroller.ShowDialog();
        }

        private void SaveButton_Click(object sender, EventArgs e)
        {
            obj.Last_name = txtLastname.Text;
            obj.First_name = txtFirstName.Text;
            obj.Middle_name = txtMiddleName.Text;
            obj.Position_name = cmbPosition.Text;
            obj.Company_name = cmbCompany.Text;
            obj.Password = txtTempPassword.Text;
            obj.Department_name = cmbDepartment.Text;

            if (obj.Last_name == string.Empty) //Validation for empty texts
            {
                MessageBox.Show("Last name can't be empty!");
            } else if (obj.First_name == string.Empty) 
            {
                MessageBox.Show("First name can't be empty!");
            }
            else if (obj.Middle_name == string.Empty)
            {
                MessageBox.Show("Middle name can't be empty!");
            }
            else if (obj.Position_name == string.Empty)
            {
                MessageBox.Show("Position name can't be empty!");
            }
            else if (obj.Department_name == string.Empty)
            {
                MessageBox.Show("Deparment can't be empty!");
            }
            else if (obj.Company_name == string.Empty)
            {
                MessageBox.Show("Company name can't be empty!");
            }
            else if (obj.Password == string.Empty)
            {
                MessageBox.Show("Password can't be empty!");
            }
            else if (txtConfirmTempPassword.Text == string.Empty)
            {
                MessageBox.Show("Please verify your input password!");
            }
            else
            {

                if (txtTempPassword.Text != txtConfirmTempPassword.Text)
                {

                    MessageBox.Show("Password does not match", "Password Mismatch",
                        MessageBoxButtons.OK);
                }
                else
                {
                    MemoryStream fingerprintData = new MemoryStream();
                    Template.Serialize(fingerprintData);
                    fingerprintData.Position = 0;
                    BinaryReader br = new BinaryReader(fingerprintData);
                    Byte[] bytes = br.ReadBytes((Int32)fingerprintData.Length);

                    audit.Emp_id = emp_id;

                    obj.Biometric_code = bytes;
                    obj.AddAccountSetTempPassword();
                }
            }
        }

        private void VerifyButton_Click(object sender, EventArgs e)
        {
            VerificationForm Verifier = new VerificationForm();
            Verifier.Verify(Template);
        }
    }
}

我将它设置为frm.setEmpID，以便我可以从另一个表单中获取它。

感谢帮助人员。

Answer 1

也许在SaveButton_Click形式的CreateAccount事件中，您还需要设置在该表单中定义的obj实例的Emp_Id变量（正如您在该实例中所做的那样） HRModuleBL在第一种形式中定义。）

private void SaveButton_Click(object sender, EventArgs e)
{
    .....
    audit.Emp_id = emp_id;
    obj.Emp_id = emp_id;
    obj.Biometric_code = bytes;
    obj.AddAccountSetTempPassword();
    .....
}