If Else and nested If conditional script controlTo control the structure and flow of script we use if then else conditional statements of VBScript used in ASP. By using different combinations of if else condition we can control the program execution flow as per requirement. Before going into more details on this let us try the basic syntax of if – condition – Then – Else – Endif syntax.
In the above script block we have first tested the condition and if it is TRUE then Script block 1 gets executed and if the condition is FALSE then script block 2 is executed.
Here is a simple sample code for printing greatest of two numbers.
By changing the assigned values to n1 and n2 we can check how the if else control structure works.
We can keep If conditions inside another If conditions but each If condition has to have matching End If condition. We call it nested If conditions. The above code is changed to add one more If condition inside main If condition.
Some places we can use ElseIF condition than using more nested If Else condition. Here is an example of uses of ElseIf Condition.
Note that ElseIf doest not require an End If to close but the original If condition should have its own.
ElseIf condition can't be used just after one Else condition. Where as Else condition can be used before ElseIF condition.
This article is written by plus2net.com team.
Be the first to post comment on this article :