Wrox Programmer Forums
Go Back   Wrox Programmer Forums > Other Programming > Intro Programming
|
Intro Programming What is a loop? Which language is best for beginners? What is "object oreinted?" All those types of questions and more are welcome here.
Welcome to the p2p.wrox.com Forums.

You are currently viewing the Intro Programming section of the Wrox Programmer to Programmer discussions. This is a community of software programmers and website developers including Wrox book authors and readers. New member registration was closed in 2019. New posts were shut off and the site was archived into this static format as of October 1, 2020. If you require technical support for a Wrox book please contact http://hub.wiley.com
  #1 (permalink)  
Old April 21st, 2014, 03:11 AM
Registered User
 
Join Date: Apr 2014
Posts: 2
Thanks: 1
Thanked 0 Times in 0 Posts
Default Not sure if I am in the right place.

I need some help with my code. I need a messagebox to show and I know the code is right, but it only works for VB not for Visual Web Developer(2010). Could someone please look at my code to see if I have done something wrong. I am using Visual Web Developer 2012, Thanks

Code:
             'Calculate and display the total charges.
            decTotal = decSubtotal + decTax     '<---Calculating(adding) the Total Charges
            lblTotal.Text = decTotal.ToString("c")  '<---Displaying decTotal in lblTotal.

            'Change and display the total charges.
            lblTotal.BackColor = Drawing.Color.Blue
            lblTotal.ForeColor = Drawing.Color.White

        Catch ex As Exception
            'Error message
            MessageBox.Show("All input must be vaild numberic values.")
        End Try
Reply With Quote
  #2 (permalink)  
Old April 24th, 2014, 01:03 AM
Friend of Wrox
 
Join Date: Feb 2014
Posts: 136
Thanks: 1
Thanked 10 Times in 10 Posts
Default

MessageBox is a windows form control. Visual web developer is for web forms. Rendering happens on the client machine; so the message box does not work. Looking at your snippet you are wanting to report some error to back to the users browser. What i typically do for this is to have a custom validator that sits silently on the page and set it up so it does not have text and its display is none. Along with this validator you add a validation summary to the page. To activate the error reporting in your try catch block set the IsValid property to false and the ErrorMessage property to your exception message on the custom validator.

Sample code to set error message on screen
Code:
catch ex as Exception
  custvalException.IsValid = false
  custValException.ErrorMessage = "some message" 'ErrorMessage displays in validation summary
End try

Last edited by mmorgan30; April 24th, 2014 at 01:12 AM..
Reply With Quote
The Following User Says Thank You to mmorgan30 For This Useful Post:
belitaross (April 24th, 2014)





Similar Threads
Thread Thread Starter Forum Replies Last Post
Not sure if I am in the right place. belitaross Intro Programming 1 April 24th, 2014 01:13 AM
Footer Not In the Right Place NexusFactor BOOK: Beginning ASP.NET 4 : in C# and VB 2 December 29th, 2010 03:11 PM
Where do I place the code? dotnetDeveloper ASP.NET 2.0 Basics 1 August 7th, 2008 01:06 PM
In-place precompilation AGS BOOK: Professional ASP.NET 2.0 and Special Edition; ISBN: 978-0-7645-7610-2; ISBN: 978-0-470-04178-9 1 December 3rd, 2005 07:45 PM
Logging in from another place Hadware General .NET 0 December 14th, 2004 03:39 PM





Powered by vBulletin®
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Copyright (c) 2020 John Wiley & Sons, Inc.