C# how to open several application in just one windows form

Question

1.00/5 (2 votes)

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I just have a MainForm and 9 User control inside the Mainform.
I need to open 9 applications (1 application per UserControl).

What I have tried:

<pre>public partial class frmMain : Form
    {
        public frmMain()
        {
            InitializeComponent();
        }

        private void frmMain_Load(object sender, EventArgs e)
        {
            int count = 9;
            for (int i = 0; i < count; i++)
            {
                RfControl rfc = new RfControl();
                rfc.gTitle.Text = "Device" + Convert.ToString((i + 1));
                this.flowLayoutPanel1.Controls.Add(rfc);
            }
        }

        private void frmMain_FormClosing(object sender, FormClosingEventArgs e)
        {
            for(int i=0; i<this.flowLayoutPanel1.Controls.Count; i++)
            {
                RfControl rfc = (RfControl)this.flowLayoutPanel1.Controls[i];
            }
        }

        private void flowLayoutPanel1_Paint(object sender, PaintEventArgs e)
        {

        }
    }

Posted 23-Sep-20 3:38am

Mohammad Razmi

Updated 23-Sep-20 4:49am

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Comments

OriginalGriff 23-Sep-20 10:23am

And?
What have you tried?
Where are you stuck?
What help do you need?

Mohammad Razmi 23-Sep-20 10:27am

Hello sir. I actually don't know what to in order to reach my goal (9 application for my frmmain).
when I start my application just one application and process open in my windows task manager.
I would like to open 9 of the same program.

Richard MacCutchan 23-Sep-20 10:30am

Then just click on the app 9 times.

Mohammad Razmi 23-Sep-20 10:32am

I don’t want it...
I just need the same application to run from another thread for each UserControl (9 of them are present in the my mainform)

Richard MacCutchan 23-Sep-20 10:37am

Use the Process Class (System.Diagnostics) | Microsoft Docs[^] to create each application.

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OriginalGriff · Answer 1 · 2020-09-23T04:49:00

Threads and Processes are different from applications!
If you have an application (i.e. an EXE file) you want to run each time you create a control instance, then the control needs to call Process.Start:

C#

Process.Start("MyApp.exe", "my app parameters");

Process.Start Method (System.Diagnostics) | Microsoft Docs[^] or one of it's overloads, or create a Process instance for finer control.

If you have a task you want to run in the background within your control but the code is built into the control's assembly, then you need a Thread, and I'd recommend startith with a BackgroundWorker Class (System.ComponentModel) | Microsoft Docs[^] instance.