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Using TypeOf in a Select Case
Message
De
11/12/2012 11:01:16
 
 
À
11/12/2012 10:44:58
Information générale
Forum:
ASP.NET
Catégorie:
Code, syntaxe and commandes
Versions des environnements
Environment:
VB 9.0
OS:
Windows 7
Network:
Windows 2003 Server
Database:
MS SQL Server
Application:
Web
Divers
Thread ID:
01559289
Message ID:
01559311
Vues:
47
>>Google says yes
>>
>>
>>   ' Based on the control
>>                            Select Case True
>>                                ' Textbox
>>                                Case TypeOf (locontrol) is System.Web.UI.WebControls.TextBox
>>
>>
>
>Nice trick, I am now wondering if a single evaluation to a string in the Select Case would be as fast as using TypeOf in each Case.


The select case also supports boolean types

As to the speed, you may want to test it.


First case :
String comparison is slow

Second case needs quit a bit of work
- evaluation of the TypeOf operator
- compare with the type ( System.Web.UI.WebControls.TextBox )
- compare the result with the Select Case value ( True)

Think string comparison will be the faster - but -: I do not know
Gregory
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