Modeless form wait on button click

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I'm programming in SolidWorks API, but this doesn't matter. I'm using modeless windows form (and for my case I can't use modal form). How can I reach that when the form opens, the code wait to click on button on this form. Therefore, I want to code go forward when I click button on modeless form and don't before.

Let say that I have this code:

C#

using SolidWorks.Interop.sldworks;
using SolidWorks.Interop.swconst;
using System.Runtime.InteropServices;
using System;
using System.Diagnostics;



   namespace Example.csproj
   {
       public partial class SolidWorksMacro
       {
           public void Main()
           {
               Debug.Print("This is main ");

               Form1 frm = new Form1();
               frm.Show();

               //wait on click to Butoon1 on Form1

               Debug.Print("We are on the end of programe ");
           }

           /// <summary>
           ///  The SldWorks swApp variable is pre-assigned for you.
           /// </summary>
           public SldWorks swApp;
       }
   }

and this code for form:

C#

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

namespace Example.csproj
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            // With this butoon I want to continue program but don't before and I can't use modal form
        }
    }
}

Now the form is closed as soon as it's opened because the code continoue and it is finished and becose of this the form is closed. I want to the code wait until I will click button. But I realy need modeless form.

I know that this is very basic question but I don't find useful answer. I think that I can resolve this problem with events but I don't know how. I rode a lot about events. Can you give me the concrete resolve for this above code.

Posted 14-Nov-12 0:24am

Member 9598596

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4 solutions

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lukeer · Answer 1 · 2012-11-14T00:36:00

Rais an event in the child form:

C#

public partial class Form1 : Form
{
    public event EventHandler OkayToProceedChanged;

    public Form1()
    {
        InitializeComponent();
    }

    private void button1_Click(object sender, EventArgs e)
    {
        // With this butoon I want to continue program but don't before and I can't use modal form
        EventHandler eh = OkayToProceedChanged;
        if(eh != null)
        {
            eh(this, new EventArgs());
        }
    }
}

And subscribe to that event in the main program:

C#

private bool _okayToProceed = false;

public void Main()
{
    Debug.Print("This is main ");
 
    Form1 frm = new Form1();
    frm.OkayToProceedChanged += new EventHandler(Form1_OkayToProceedChanged);
    frm.Show();

    while(!_okayToProceed)
    {
        System.Threading.Thread.Sleep(10);
    }

    //wait on click to Butoon1 on Form1
    Debug.Print("We are on the end of programe ");

    /// <summary>
    ///  The SldWorks swApp variable is pre-assigned for you.
    /// </summary>
    public SldWorks swApp;
}

private void Form1_OkayToProceedChanged(object sender, EventArgs e)
{
    _okayToProceed = true;
}

BotCar · Answer 2 · 2012-11-14T00:40:00

Solution 2

While it ain't pretty, you might want to look in the direction of using a flag that is accessible by both main and your form.

C#

public class AppGlobals
{
  public static bool IsFormFinished = false;
}

C#

private void button1_Click(object sender, EventArgs e)
{
  AppGlobals.IsFormFinished = true; 
}

C#

public void Main()
{
  Debug.Print("This is main ");
 
  Form1 frm = new Form1();
  frm.Show();
 
  //wait on click to Butoon1 on Form1
  while(!AppGlobals.IsFormFinished)
  {
    System.Threading.Thread.Sleep(10);
  }

  Debug.Print("We are on the end of programe ");
}

Posted 14-Nov-12 0:40am

BotCar

Updated 14-Nov-12 2:15am

v2

Comments

Member 9598596 14-Nov-12 8:03am

Maybe can you implement your solution in my code. Because I'm beginer and when I want to implement this code I get several errors.

BotCar 14-Nov-12 8:17am

I've made the code more copy/paste friendly. What specific errors are you getting?

Member 9598596 14-Nov-12 8:33am

Where I need to paste this public class AppGlobals......
If I paste in SolidWorksMacro.cs I get error The name 'AppGlobals' does not exist in the current context.

But if I paste in both (in SolidWorksMacro.cs and in Form1.cs) then is the problem the same which is in the solution 1 by lukeer. The window is showed but button is not showed and computer something working.....And I can't do nothing.

I just want to select something in solidworks graphic are when the form is open becose of this can't use modal form. And then when the entities wil be selected I will click button to go code forward

I want

BotCar 14-Nov-12 8:52am

Don't put AppGlobals it in two files. That means you create two classes, one being used by Form1 and one being used by SolidWorksMacro. Instead, try to create a different file for the new class:
1. Go to Solution Explorer in Visual Studio (you are using Visual Studio, right?).
2. Right-click on you project (probably the second item you'll see, the first one is the solution (which is basically a collection of projects)).
3. Select Add -> Class
4. You will probably be shown some sort of dialog box where you can specify the name of the class (may be different based on the version of Visual Studio you have). Give the class a suitable name and continue.
5. Once the class is added, you should see a file with some skeleton code for you, such as:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Example.csproj
{
class AppGlobals
{
}
}

6. Add the line "public static bool IsFormFinished = false;" between the inner braces.

Member 9598596 14-Nov-12 9:17am

Now is the same probleme which I describe above. Form is showed but button no and I I don't have access to form because the computer something work.

BotCar 14-Nov-12 9:36am

I'm about to pack up and go home, so don't expect another post from me over the next few hours. That said, here's my next suggestion: Debug and step through your code. Look at the values of the variables after each line has executed.

If you don't know how to debug, have a look at this tutorial (or search the web for a different one if you prefer): http://csharp.net-tutorials.com/debugging/introduction/#.UKOqsmf2phE

Member 9598596 14-Nov-12 9:48am

I think that the problem is in sleep method. If I understand correct this method put the form in sleep mode.

Can I resolve this with another solution. I want to the program wait on klick, I don't want to program work somthing else while it wait on click.

Alan N · Answer 3 · 2012-11-14T04:25:00

One way to do this if it is acceptable for the main form to be disabled while the dialog is showing is to do just that, i.e. set Enabled = false. It's important that the main thread is not blocked, which precludes the use of Thread.Sleep, as you have found out.

A very simple demo of the idea:

C#

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

    protected override void OnShown(EventArgs e) {
      ShowPopup();
      base.OnShown(e);
    }

    private void ShowPopup() {
      Form f = new Form();
      f.Text = "Popup";
      f.FormClosed += new FormClosedEventHandler(f_FormClosed);
      f.Show(this);
      this.Enabled = false;
    }

    private void f_FormClosed(object sender, FormClosedEventArgs e) {
      this.Enabled = true;
    }
  }
}

Alan.

Thomas Daniels · Answer 4 · 2012-11-14T04:56:00

Hi,

I think you need to change the Main method into this:

C#

public void Main()
{
    Debug.Print("This is main ");

   Application.Run(new Form1()); // use Application.Run instead of Form.Show

    //wait on click to Butoon1 on Form1

    Debug.Print("We are on the end of programe ");
}

And in the button1_Click method:

C#

private void button1_Click(object sender, EventArgs e)
{
      this.Close(); // close the form
}

Hope this helps.

Modeless form wait on button click

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