helpcontent2/source/text/sbasic/shared/03090101.xhp

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  38                 <helpdocument version="1.0">
  39 <meta>
  40 <topic id="textsbasicshared03090101xml" indexer="include" status="PUBLISH">
  41 <title id="tit" xml-lang="en-US">If...Then...Else Statement [Runtime]</title>
  42 <filename>/text/sbasic/shared/03090101.xhp</filename>
  43 </topic>
  44 </meta>
  45 <body>
  46 <section id="ifthenelse">
  47 <bookmark xml-lang="en-US" branch="index" id="bm_id3154422"><bookmark_value>If statement</bookmark_value>
  48 </bookmark>
  49 <paragraph role="heading" id="hd_id3154422" xml-lang="en-US" level="1" l10n="U" oldref="1"><link href="text/sbasic/shared/03090101.xhp" name="If...Then...Else Statement [Runtime]">If...Then...Else Statement [Runtime]</link></paragraph>
  50 <paragraph role="paragraph" id="par_id3155555" xml-lang="en-US" l10n="U" oldref="2">Defines one or more statement blocks that you only want to execute if a given condition is True.</paragraph>
  51 </section>
  52 <paragraph role="heading" id="hd_id3146957" xml-lang="en-US" level="2" l10n="U" oldref="3">Syntax:</paragraph>
  53 <paragraph role="paragraph" id="par_id3153126" xml-lang="en-US" l10n="CHG" oldref="4">If condition=true Then Statement block [ElseIf condition=true Then] Statement block [Else] Statement block EndIf<br/>Instead of Else If you can write ElseIf, instead of End If you can write EndIf.</paragraph>
  54 <paragraph role="heading" id="hd_id3155419" xml-lang="en-US" level="2" l10n="U" oldref="5">Parameters:</paragraph>
  55 <paragraph role="paragraph" id="par_id3153062" xml-lang="en-US" l10n="U" oldref="6">The <emph>If...Then</emph> statement executes program blocks depending on given conditions. 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>
  56 <paragraph role="paragraph" id="par_id3153192" xml-lang="en-US" l10n="U" oldref="7">You can nest multiple <emph>If...Then</emph> statements.</paragraph>
  57 <paragraph role="paragraph" id="par_id3154684" xml-lang="en-US" l10n="U" oldref="8">
  58 <emph>Else</emph> and <emph>ElseIf</emph> statements are optional.</paragraph>
  59 <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>
  60 <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>
  61 <paragraph role="heading" id="hd_id3152576" xml-lang="en-US" level="2" l10n="U" oldref="11">Example:</paragraph>
  62 <paragraph role="paragraph" id="par_id3150011" xml-lang="en-US" l10n="U" oldref="12">Sub ExampleIfThenDate</paragraph>
  63 <paragraph role="paragraph" id="par_id3148645" xml-lang="en-US" l10n="U" oldref="13">Dim sDate as String</paragraph>
  64 <paragraph role="paragraph" id="par_id3155855" xml-lang="en-US" l10n="U" oldref="14">Dim sToday as String</paragraph>
  65 <paragraph role="paragraph" id="par_id3154490" xml-lang="en-US" l10n="U" oldref="16">sDate = InputBox("Enter the expiration date (MM.DD.YYYY)")</paragraph>
  66 <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>
  67 <paragraph role="paragraph" id="par_id3154098" xml-lang="en-US" l10n="U" oldref="18">sToday = Date$</paragraph>
  68 <paragraph role="paragraph" id="par_id3144765" xml-lang="en-US" l10n="U" oldref="19">sToday = Right$(sToday, 4)+ Mid$(sToday, 4, 2) + Left$(sToday, 2)</paragraph>
  69 <paragraph role="paragraph" id="par_id3154792" xml-lang="en-US" l10n="U" oldref="20">If sDate &lt; sToday Then</paragraph>
  70 <paragraph role="paragraph" id="par_id3155601" xml-lang="en-US" l10n="U" oldref="21">MsgBox "The expiration date has passed"</paragraph>
  71 <paragraph role="paragraph" id="par_id3146972" xml-lang="en-US" l10n="U" oldref="22">ElseIf sDate &gt; sToday Then</paragraph>
  72 <paragraph role="paragraph" id="par_id3146912" xml-lang="en-US" l10n="U" oldref="23">MsgBox "The expiration date has not yet passed"</paragraph>
  73 <paragraph role="paragraph" id="par_id3153710" xml-lang="en-US" l10n="U" oldref="24">Else</paragraph>
  74 <paragraph role="paragraph" id="par_id3154754" xml-lang="en-US" l10n="U" oldref="25">MsgBox "The expiration date is today"</paragraph>
  75 <paragraph role="paragraph" id="par_id3154361" xml-lang="en-US" l10n="U" oldref="26">End If</paragraph>
  76 <paragraph role="paragraph" id="par_id3148405" xml-lang="en-US" l10n="U" oldref="28">End Sub</paragraph>
  77 </body>
  78 </helpdocument>