Microsoft KB Archive/219271

= How to Add the Immediate-If Function to an ASP Page =

Article ID: 219271

Article Last Modified on 12/3/2007

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APPLIES TO


 * Microsoft Internet Information Services 6.0
 * Microsoft Internet Information Server 3.0
 * Microsoft Internet Information Server 4.0
 * Microsoft Internet Information Services 5.0

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This article was previously published under Q219271



We strongly recommend that all users upgrade to Microsoft Internet Information Services (IIS) version 6.0 running on Microsoft Windows Server 2003. IIS 6.0 significantly increases Web infrastructure security. For more information about IIS security-related topics, visit the following Microsoft Web site:

http://www.microsoft.com/technet/security/prodtech/IIS.mspx



SUMMARY
One of the common Visual Basic (VB) or Visual Basic for Applications (VBA) functions that was omitted from VBScript (VBS) for Active Server Pages (ASP) is the "Immediate-If" or IIf function.

The IIf function is used in place of If..Then..Else statements, where a single expression is being tested and specific values are returned if the expression evaluates as true or false. Because this command was omitted from the ASP VBS command set, you can use the code below to add this functionality to an ASP page by adding IIf as a new function to the code.



MORE INFORMATION
The following syntax explanation is from Microsoft's Developer Network:

IIf Function
Returns one of two parts, depending on the evaluation of an expression.

Syntax

IIf(expr,truepart,falsepart)

Usage
The IIf function can be used in ASP code by adding the following function to a page: Function IIf(i,j,k) If i Then IIf = j Else IIf = k End Function

Example
The following ASP code shows an example page using the IIf function to determine if a number is even or odd: <% @LANGUAGE="VBSCRIPT" %> <% Function IIf(i,j,k) If i Then IIf = j Else IIf = k End Function %> IIF example  <% For X = 1 to 5 Response.Write "" & X & " is an " & IIf(X Mod 2, "Odd", "Even") & " number." & vbCrLf Next %> 

For more information on Microsoft Scripting Technologies, please see the information at the following URL:

http://msdn2.microsoft.com/en-us/library/ms950396.aspx

Keywords: kbhowto KB219271

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