1cdf0e10cSrcweir<?xml version="1.0" encoding="UTF-8"?> 2cdf0e10cSrcweir 3cdf0e10cSrcweir 4cdf0e10cSrcweir 5*d33d0967SAndrew Rist<!--*********************************************************** 6cdf0e10cSrcweir * 7*d33d0967SAndrew Rist * Licensed to the Apache Software Foundation (ASF) under one 8*d33d0967SAndrew Rist * or more contributor license agreements. See the NOTICE file 9*d33d0967SAndrew Rist * distributed with this work for additional information 10*d33d0967SAndrew Rist * regarding copyright ownership. The ASF licenses this file 11*d33d0967SAndrew Rist * to you under the Apache License, Version 2.0 (the 12*d33d0967SAndrew Rist * "License"); you may not use this file except in compliance 13*d33d0967SAndrew Rist * with the License. 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When $[officename] Basic encounters an <emph>If</emph> statement, the condition is tested. If the condition is True, all subsequent statements up to the next <emph>Else</emph> or <emph>ElseIf</emph> statement are executed. If the condition is False, and an <emph>ElseIf</emph> statement follows, $[officename] Basic tests the next condition and executes the following statements if the condition is True. If False, the program continues either with the next <emph>ElseIf</emph> or <emph>Else</emph> statement. Statements following <emph>Else</emph> are executed only if none of the previously tested conditions were True. After all conditions are evaluated, and the corresponding statements executed, the program continues with the statement following <emph>EndIf</emph>.</paragraph> 47cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3153192" xml-lang="en-US" l10n="U" oldref="7">You can nest multiple <emph>If...Then</emph> statements.</paragraph> 48cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3154684" xml-lang="en-US" l10n="U" oldref="8"> 49cdf0e10cSrcweir<emph>Else</emph> and <emph>ElseIf</emph> statements are optional.</paragraph> 50cdf0e10cSrcweir<paragraph role="warning" id="par_id3152939" xml-lang="en-US" l10n="U" oldref="9">You can use <emph>GoTo</emph> and <emph>GoSub</emph> to jump out of an <emph>If...Then</emph> block, but not to jump into an <emph>If...Then</emph> structure.</paragraph> 51cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3153951" xml-lang="en-US" l10n="U" oldref="10">The following example enables you to enter the expiration date of a product, and determines if the expiration date has passed.</paragraph> 52cdf0e10cSrcweir<paragraph role="heading" id="hd_id3152576" xml-lang="en-US" level="2" l10n="U" oldref="11">Example:</paragraph> 53cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3150011" xml-lang="en-US" l10n="U" oldref="12">Sub ExampleIfThenDate</paragraph> 54cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3148645" xml-lang="en-US" l10n="U" oldref="13">Dim sDate as String</paragraph> 55cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3155855" xml-lang="en-US" l10n="U" oldref="14">Dim sToday as String</paragraph> 56cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3154490" xml-lang="en-US" l10n="U" oldref="16">sDate = InputBox("Enter the expiration date (MM.DD.YYYY)")</paragraph> 57cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3154943" xml-lang="en-US" l10n="U" oldref="17">sDate = Right$(sDate, 4) + Mid$(sDate, 4, 2) + Left$(sDate, 2)</paragraph> 58cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3154098" xml-lang="en-US" l10n="U" oldref="18">sToday = Date$</paragraph> 59cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3144765" xml-lang="en-US" l10n="U" oldref="19">sToday = Right$(sToday, 4)+ Mid$(sToday, 4, 2) + Left$(sToday, 2)</paragraph> 60cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3154792" xml-lang="en-US" l10n="U" oldref="20">If sDate < sToday Then</paragraph> 61cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3155601" xml-lang="en-US" l10n="U" oldref="21">MsgBox "The expiration date has passed"</paragraph> 62cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3146972" xml-lang="en-US" l10n="U" oldref="22">ElseIf sDate > sToday Then</paragraph> 63cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3146912" xml-lang="en-US" l10n="U" oldref="23">MsgBox "The expiration date has not yet passed"</paragraph> 64cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3153710" xml-lang="en-US" l10n="U" oldref="24">Else</paragraph> 65cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3154754" xml-lang="en-US" l10n="U" oldref="25">MsgBox "The expiration date is today"</paragraph> 66cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3154361" xml-lang="en-US" l10n="U" oldref="26">End If</paragraph> 67cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3148405" xml-lang="en-US" l10n="U" oldref="28">End Sub</paragraph> 68cdf0e10cSrcweir</body> 69cdf0e10cSrcweir</helpdocument> 70