1<?xml version="1.0" encoding="UTF-8"?> 2 3<!--*********************************************************** 4 * 5 * Licensed to the Apache Software Foundation (ASF) under one 6 * or more contributor license agreements. See the NOTICE file 7 * distributed with this work for additional information 8 * regarding copyright ownership. The ASF licenses this file 9 * to you under the Apache License, Version 2.0 (the 10 * "License"); you may not use this file except in compliance 11 * with the License. You may obtain a copy of the License at 12 * 13 * http://www.apache.org/licenses/LICENSE-2.0 14 * 15 * Unless required by applicable law or agreed to in writing, 16 * software distributed under the License is distributed on an 17 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 18 * KIND, either express or implied. See the License for the 19 * specific language governing permissions and limitations 20 * under the License. 21 * 22 ***********************************************************--> 23 24<helpdocument version="1.0"> 25<meta> 26<topic id="textsbasicshared03102300xml" indexer="include" status="PUBLISH"> 27<title id="tit" xml-lang="en-US">IsDate Function [Runtime]</title> 28<filename>/text/sbasic/shared/03102300.xhp</filename> 29</topic> 30</meta> 31<body> 32<section id="isdate"> 33<bookmark xml-lang="en-US" branch="index" id="bm_id3145090"> 34<bookmark_value>IsDate function</bookmark_value> 35</bookmark> 36<paragraph role="heading" id="hd_id3145090" xml-lang="en-US" level="1" l10n="U" oldref="1"><link href="text/sbasic/shared/03102300.xhp" name="IsDate Function [Runtime]">IsDate Function [Runtime]</link></paragraph> 37<paragraph role="paragraph" id="par_id3153311" xml-lang="en-US" l10n="U" oldref="2">Tests if a numeric or string expression can be converted to a <emph>Date</emph> variable.</paragraph> 38</section> 39<paragraph role="heading" id="hd_id3153824" xml-lang="en-US" level="2" l10n="U" oldref="3">Syntax:</paragraph> 40<paragraph role="paragraph" id="par_id3147573" xml-lang="en-US" l10n="U" oldref="4">IsDate (Expression)</paragraph> 41<paragraph role="heading" id="hd_id3143270" xml-lang="en-US" level="2" l10n="U" oldref="5">Return value:</paragraph> 42<paragraph role="paragraph" id="par_id3147560" xml-lang="en-US" l10n="U" oldref="6">Bool</paragraph> 43<paragraph role="heading" id="hd_id3148947" xml-lang="en-US" level="2" l10n="U" oldref="7">Parameters:</paragraph> 44<paragraph role="paragraph" id="par_id3145069" xml-lang="en-US" l10n="U" oldref="8"> 45<emph>Expression:</emph> Any numeric or string expression that you want to test. If the expression can be converted to a date, the function returns <emph>True</emph>, otherwise the function returns <emph>False</emph>.</paragraph> 46<embed href="text/sbasic/shared/00000003.xhp#errorcode"/> 47<embed href="text/sbasic/shared/00000003.xhp#err5"/> 48<paragraph role="heading" id="hd_id3150447" xml-lang="en-US" level="2" l10n="U" oldref="9">Example:</paragraph> 49<paragraph role="paragraph" id="par_id3154217" xml-lang="en-US" l10n="U" oldref="10">Sub ExampleIsDate</paragraph> 50<paragraph role="paragraph" id="par_id3153970" xml-lang="en-US" l10n="U" oldref="11">Dim sDateVar as String</paragraph> 51<paragraph role="paragraph" id="par_id3153193" xml-lang="en-US" l10n="U" oldref="12">sDateVar = "12.12.1997"</paragraph> 52<paragraph role="paragraph" id="par_id3150869" xml-lang="en-US" l10n="U" oldref="13">print IsDate(sDateVar) REM Returns True</paragraph> 53<paragraph role="paragraph" id="par_id3148453" xml-lang="en-US" l10n="U" oldref="14">sDateVar = "12121997"</paragraph> 54<paragraph role="paragraph" id="par_id3147288" xml-lang="en-US" l10n="U" oldref="15">print IsDate(sDateVar) REM Returns False</paragraph> 55<paragraph role="paragraph" id="par_id3155132" xml-lang="en-US" l10n="U" oldref="16">end sub</paragraph> 56</body> 57</helpdocument> 58