C#

using System;
using System.Windows.Forms;

namespace Test
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        Form2 f2 = new Form2();
        string listBoxChoice;

        private void Form1_Load(object sender, EventArgs e)
        {
            f2.SendListBoxChoice += SendListBoxChoice;
        }

        private void SendListBoxChoice(string choice)
        {
            listBoxChoice = choice;
        }

        private void testButton_Click(object sender, EventArgs e)
        {
            for (int i = 0; i < 2; i++)
            {
                listBoxChoice = "";

                f2.ShowDialog(this);

                if (listBoxChoice != "")
                {
                    // do something with the choice

                    switch (listBoxChoice)
                    {
                        case "1":
                            break;
                    }
                }
            }
        }
    }
}

using System;
using System.Windows.Forms;

namespace Test
{
    public partial class Form2 : Form
    {
        public Action<string> SendListBoxChoice;

        public Form2()
        {
            InitializeComponent();
        }

        private void listBox1_SelectedValueChanged(object sender, EventArgs e)
        {
            if (SendListBoxChoice != null)
            {
                SendListBoxChoice(listBox1.SelectedItem.ToString());
            }
        }
    }
}

ahmedoze wrote:

i hope you help me,please i am my final project

Bastard Programmer from Hell
If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.

Eddy Vluggen wrote:

How much time until your deadline?

Docs from MS[^] state:

This cmdlet is implemented by using the Start method of the System.Diagnostics.Process class.

Bastard Programmer from Hell
If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.

Employee Name: John smith Junior 1234 20000.00 36

double pay;
if (!double.TryParse(txtPay.Text, out pay))
   {
   ... report problem to user
   return;
   }

John
John Smith
John Smith Junior
Charles Philip Arthur George Mountbatten-Windsor

"John",
"John Smith",
"John Smith Junior",
"Charles Philip Arthur George Mountbatten-Windsor",

namespace ConsoleApp1
    {
    class Program
        {
        private static ManagementScope oManagementScope = null;
        static void Main(string[] args)
            {
            oManagementScope.
            }
        }
    }