Hi, All
What is the the difference between If and #If? I read some VB.NET books,
sometimes I see #If, but cannot tell why. Please help.
Thanks
Kai
3  8431 
Kai,
* "kai" <ka******@earth link.net> scripsit: What is the the difference between If and #If? I read some VB.NET books,
sometimes I see #If, but cannot tell why. Please help.
If you are using VS.NET or VB.NET Standard, just set the cursor onto the
'If' or '#If' in your code window and press the F1 key.
--
Herfried K. Wagner [MVP]
<http://www.mvps.org/dotnet>
From the MSDN help:
On the surface, the behavior of the #If...Then...#E lse directives appears
the same as that of the If...Then...Els e statements. However, the
#If.Then.#Else directives evaluate what is compiled by the compiler, whereas
the If.Then.Else statements evaluate conditions at run time.
"Herfried K. Wagner [MVP]" <hi************ ***@gmx.at> wrote in message
news:c1******** *****@ID-208219.news.uni-berlin.de... Kai,
* "kai" <ka******@earth link.net> scripsit: What is the the difference between If and #If? I read some VB.NET books,
sometimes I see #If, but cannot tell why. Please help.
If you are using VS.NET or VB.NET Standard, just set the cursor onto the
'If' or '#If' in your code window and press the F1 key.
--
Herfried K. Wagner [MVP]
<http://www.mvps.org/dotnet>
Hi Kai,
Thanks for posting in the community.
First of all, I would like to confirm my understanding of your issue.
From your description, I understand that you are confused about the if and
#if statement in VB.NET.
Have I fully understood you? If there is anything I misunderstood, please
feel free to let me know.
#If...Then...#E lse Directives is used when conditionally compiles selected
blocks of Visual Basic code. The statement will be evaluated in compiling
time.
while If...Then...Els e Statements is used when conditionally executes a
group of statements, depending on the value of an expression. It is
evalulated in run time.
#If...Then...#E lse Directives http://msdn.microsoft.com/library/de...us/vblr7/html/
vadirif.asp
If...Then...Els e Statements http://msdn.microsoft.com/library/de...us/vblr7/html/
vastmif.asp
Best regards,
Peter Huang
Microsoft Online Partner Support
Get Secure! - www.microsoft.com/security
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