Execute all else if blocks on visual basic

Question

I'm working in visual basic on visual studio 2019. There is a way to execute all ElseIf blocks even if the first "if" or one of the precessor were true? if is not possible with the ElseIf, there is any other command I could use? The final idea and the explanation of why I can't just do separated Ifs is because I need to give a error message if all the statements were false, and I don't know how to group them without the ElseIf command, so this is the only idea I have in mind right now to do so.

So, this is the ElseIf structure, it stops when it finds one of this statements true

If(boolean_expression 1)Then
   ' Executes when the boolean expression 1 is true 
ElseIf( boolean_expression 2)Then
   ' Executes when the boolean expression 2 is true 
ElseIf( boolean_expression 3)Then
   ' Executes when the boolean expression 3 is true 
Else 
   ' executes when the none of the above condition is true 
End If

So, I want to execute every single ElseIf no matters if the predecessor was true of false. I hope you can help me resolve this, thanks!

You can still user separate ifs. Just store an incrementing value to a variable if an if statement is true (result += 1). Then evaluate the value of the variable at the end. If result = 4 (or how many conditions you did), then show your message — F0r3v3r-A-N00b, Dec 07 '21 at 03:52

Jaco le Grange · Accepted Answer · 2021-12-07T14:38:49.770

1

You can execute each block separate and still check if all is false:

If (expression1) Then 'Do Stuff
If (expression2) Then 'Do Stuff
If (expression3) Then 'Do Stuff
If Not (expression1) AndAlso Not (expression2) AndAlso Not (expression3) Then 'Do Stuff

edited Dec 07 '21 at 14:38

answered Dec 07 '21 at 14:10

Jaco le Grange

80
7

You might be interested in [(OrElse and Or) and (AndAlso and And) - When to use?](https://stackoverflow.com/q/8409467/1115360) – Andrew Morton Dec 07 '21 at 14:32

score 1 · Answer 2 · answered Dec 07 '21 at 15:50

1

I think in your case it's probably more elegant and computationally faster to do:

If Not booleanExpr1 AndAlso Not booleanExpr2 AndAlso Not booleanExpr3 Then
  'Fire Error Message
Else
  'Execute all 3 expressions
End If

answered Dec 07 '21 at 15:50

Lorenzo Martini

373
1
8

Execute all else if blocks on visual basic

2 Answers2