Improve company productivity with a Business Account.Sign Up

x
?
Solved

ASP.NET C# MessageBox.Show Showing a modal dialog box or form when the application ...

Posted on 2016-09-20
2
Medium Priority
?
797 Views
Last Modified: 2016-09-20
Someone helped us here with this cod to ctach an exception and pop up a message to the user with this code:

        private void button1_Click(object sender, EventArgs e)
        {
            lineChanger("QWERTY", "MyTextFile.txt", 2);
        }

        static void lineChanger(string newText, string fileName, int line_to_edit)
        {
            int attemptCounter = 0;
            for (attemptCounter = 1; attemptCounter <= 10; attemptCounter++)
            {
                try
                {
                    System.Diagnostics.Debug.WriteLine("Attempt " + (attemptCounter));
                    string[] arrLine = File.ReadAllLines(fileName);
                    arrLine[line_to_edit - 1] = newText;
                    File.WriteAllLines(fileName, arrLine);

                    // No error - break
                    break;
                }
                catch (IOException ioex)
                {
                    System.Diagnostics.Debug.WriteLine("IOException happened: " + ioex.ToString());
                    if (attemptCounter >= 10)
                    {
                        MessageBox.Show("File is in use");
                    }
                }
            }
        }

Open in new window


However when the message MessageBox.Show("File is in use"); is launched the applciation gives this error:

"Showing a modal dialog box or form when the application is not running in UserInteractive mode is not a valid operation. Specify the ServiceNotification or DefaultDesktopOnly style to display a notification from a service application"

How can be fixed the problem or what could be the problem?

Thank you
0
Comment
Question by:Alex E.
2 Comments
 
LVL 27

Accepted Solution

by:
Shaun Kline earned 2000 total points
ID: 41807115
The MessageBox class is only used for Windows Forms applications. If you wish to return feedback to a web user, you either need to put the message into a control on your web page, such as a label control, or use JavaScript to display the message when the page reloads.
0
 

Author Closing Comment

by:Alex E.
ID: 41807733
Thank you your idea was excellent. In fact was impossible use msgbox however we used a session variable and we passed that variable session in a text label and that's it.

Thank you
0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Just a quick little trick I learned recently.  Now that I'm using jQuery with abandon in my asp.net applications, I have grown tired of the following syntax:      (CODE) I suppose it just offends my sense of decency to put inline VBScript on a…
Have you tried to learn about Unicode, UTF-8, and multibyte text encoding and all the articles are just too "academic" or too technical? This article aims to make the whole topic easy for just about anyone to understand.
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.
Hi, this video explains a free download that you can incorporate into your Access databases, or use stand-alone for contact management. Contacts -- Names, Addresses, Phone Numbers, eMail Addresses, Websites, Lists, Projects, Notes, Attachments…

595 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question