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ASP Conditionals

Conditional statements in ASP allow you to control the flow of your application based on certain conditions. ASP supports If...Then, If...Then...Else, and Select Case structures for implementing decision-making logic.

Key Topics

If...Then Statements

Example

<%
    Dim age
    age = 18
    If age >= 18 Then
        Response.Write("You are eligible to vote.")
    End If
%>

Explanation: The If...Then statement evaluates a condition and executes the code block if the condition is true.

If...Then...Else Statements

Example

<%
    Dim score
    score = 75
    If score >= 50 Then
        Response.Write("You passed the exam.")
    Else
        Response.Write("You failed the exam.")
    End If
%>

Explanation: The If...Then...Else statement adds an alternative code block to execute when the condition is false.

Select Case Statements

Example

<%
    Dim grade
    grade = "B"
    Select Case grade
        Case "A"
            Response.Write("Excellent!")
        Case "B"
            Response.Write("Good job!")
        Case "C"
            Response.Write("You can improve.")
        Case Else
            Response.Write("Invalid grade.")
    End Select
%>

Explanation: The Select Case statement simplifies multiple conditional checks, executing the block of code that matches the value of the variable.

Key Takeaways

  • Use If...Then for simple conditions and If...Then...Else for alternative paths.
  • The Select Case statement is effective for handling multiple conditions.
  • Conditional logic helps you create dynamic and responsive applications.
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