Some help with messagebox.show(

Thad T.

4y1.2kC#

TO: whom in may concern:

I'm working with messagebox.show's, and I'm trying to call one, and then another one. I get the first one, but not the second one. Could provide some insights please. I;ve included my C# source to show what I have done.

Thanks in advance.

Aug 8, 2022

RSVP Please.

========================

if (ifileQfound != 1) /// if file is not found.
{
Console.WriteLine(" We're in");
d = MessageBox.Show(this," DLL File_Error-FNF: Required 'datelibrary.Dll' file is not found. Exiting Out??...",
"DateWare Demo App", MessageBoxButtons.OK,MessageBoxIcon.Exclamation);
Console.WriteLine(d);
if (d == DialogResult.OK)
{
this.Close();
Console.WriteLine("----");
d1 = MessageBox.Show(this, " DLL File_not_found. Do you want to fix the problem?. ",
"DateWare Demo App", MessageBoxButtons.YesNo, MessageBoxIcon.Question,
MessageBoxDefaultButton.Button2);
Console.WriteLine(d1);
if (d1 == DialogResult.Yes)
{
this.Close();
fixit = true;
}
else
{
Console.WriteLine("We don't want to fix it!. ");
fixit = false;
}
}
if(fixit)
{
Console.WriteLine("We want to fix it!. ");

}
Console.WriteLine(" We're Leaving..." + fixit.ToString());
Application.Exit();
}

5 Replies

Know the answer? Post it — somebody with the same question will find it here.

Amit Mohanty4y ago
Accepted answer
When a form is closed, all resources created within the object are closed and the form is disposed. So you need to chang
this.Close();
to
this.Hide();
Thad T.4y ago
To Amilt Mohanty,

Putting in that "this.hide()" worked like a charm. Thanks.
A thought came to mind, since we hid a messagebox by the use of the "this.hide" statement, shouldn't we issue
another this.close() after the second. And this attempt did not work.

But putting in another messagebox.show( statement, the program abends on the attemptted invocation of the 3rd messagebox.show( call. The error it gave is: "System.ObjectDisposedException" . How do I make this problem go away and work and clean up after all these calls.

This is the 3rd messagebox.show( call:
d2 = MessageBox.Show(this, " We are leaving, Repairs were not successfull!...",
"DateWare Demo App", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
Console.WriteLine(d2);
this.Close();
-----------
But thanks for the quick response and the assume working answer. Can you help me again?
ThadT.
RSVP Please...
Vishal Joshi4y ago
If you write
this.close()
then application will close and it wan't be able to execute next line of code.
In your case you are writing it after first condition satisfied. As amit says you can write this.hide() instead of.

Please find below link for Message Box understanding.
https://www.c-sharpcorner.com/UploadFile/mahesh/understanding-message-box-in-windows-forms-using-C-Sharp/
Amit Mohanty4y ago
Use this.Hide(); in stade of this.Close();
if (ifileQfound != 1)   ///    if file is not found.
{
    Console.WriteLine(" We're in");
    d = MessageBox.Show(this, " DLL File_Error-FNF: Required 'datelibrary.Dll' file is not found.       Exiting Out??...",
        "DateWare Demo App", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
    Console.WriteLine(d);
    if (d == DialogResult.OK)
    {
        this.Hide(); //*********//
        Console.WriteLine("----");
        d1 = MessageBox.Show(this, " DLL File_not_found. Do you want to fix the problem?. ",
                "DateWare Demo App", MessageBoxButtons.YesNo, MessageBoxIcon.Question,
                MessageBoxDefaultButton.Button2);
        Console.WriteLine(d1);
        if (d1 == DialogResult.Yes)
        {
            this.Close();
            fixit = true;
        }
        else
        {
            Console.WriteLine("We don't want to fix it!.  ");
            fixit = false;
        }
    }
    if (fixit)
    {
        Console.WriteLine("We want to fix it!.  ");

    }
    Console.WriteLine(" We're Leaving..." + fixit.ToString());
    Application.Exit();
}
Sam Hobbs4y ago
Are you sure that DialogResult.OK is the same as MessageBoxResult.OK?

One way to diagnose problems like that is to use the debugger to single-step through the code. When you do, and if the preceding indicates the problem, then you would have known to look closer at the if condition.