Canceleventargs validating

04-Aug-2016 14:44

The code below is an implementation of calling these two methods in C# from an External application. But this doesn’t mean that you can’t still use them, using reflection you can load any library dynamically into your code and execute any method within it. That's a term used for code that breaks easily whan anything is changed. For example, once you get into the loop, the only way to get out again is to cancel the program - not a very satisfactory user experience.

However if done at the control level (On Change, On Leave) the Infragistic DLL seems to be available and the code below works.

And you can end the program without completing the loop! Text = "Nothing entered" & vb New Line & "Please enter a grade" Else If Not Is Numeric(input Grade. Text = "Input is not a numeric grade" & vb New Line & "Please enter a numeric grade" Else If CDec(input Grade. Text = "Enter a grade between 0-100" Else Valid Grade Entry = True End If End Sub Private Sub btn Accept Grades_Click( By Val sender As System.

--------Click Here to display the illustration-------- Dim Valid Grade Entry As Boolean Private Sub input Grade_Validating( By Val sender As Object, By Val e As System. Cancel Event Args ) Valid Grade Entry = False Error Msg.

But a zero length string is also returned if the user simply forgets to enter anything. NET where there are even more sophisticated ideas, the best way to improve this program is to simply get rid of the Input Box and loop. Focus() End Sub It's a minor point, but you might also keep in mind that the VB.

There's a way to tell the difference, but it requires using unmanaged code. Use a simple Text Box to enter the data and use a Label to display messages. NET And Also and Or Else operators are "short circuit" operators.

However if done at the control level (On Change, On Leave) the Infragistic DLL seems to be available and the code below works. And you can end the program without completing the loop! Text = "Nothing entered" & vb New Line & "Please enter a grade" Else If Not Is Numeric(input Grade. Text = "Input is not a numeric grade" & vb New Line & "Please enter a numeric grade" Else If CDec(input Grade. Text = "Enter a grade between 0-100" Else Valid Grade Entry = True End If End Sub Private Sub btn Accept Grades_Click( By Val sender As System. --------Click Here to display the illustration-------- Dim Valid Grade Entry As Boolean Private Sub input Grade_Validating( By Val sender As Object, By Val e As System. Cancel Event Args ) Valid Grade Entry = False Error Msg. But a zero length string is also returned if the user simply forgets to enter anything. NET where there are even more sophisticated ideas, the best way to improve this program is to simply get rid of the Input Box and loop. Focus() End Sub It's a minor point, but you might also keep in mind that the VB.There's a way to tell the difference, but it requires using unmanaged code. Use a simple Text Box to enter the data and use a Label to display messages. NET And Also and Or Else operators are "short circuit" operators.Note that I am not affiliated with this company , nor have I been compensated for the below statement. Really I just wanted to break up the monotony and Annie suggested I added a poster or something to the wall. The below example demonstrates how to dynamically load the Microsoft Interop Library for Outlook from a directory and subsequently invoke a new Email with an attachment.