</ iframe > </noscript> <!-- End Google Tag Manager (noscript) --> <div id="BeforeHeaderContent"> </div> <div id="HeaderContent"> <div id="ProjectTitle">Windows 7 Control Pack for WinForms</div> <div id="PageTitle"><div id="PageTitleText">ClearKnownCategories Method</div></div> </div> <div id="AfterHeaderContent"> <!-- Spacing --> <span id="ToggleAllSectionsLink" class="FunctionLink"> <label id="CollapseAllLabel">Collapse All</label> <label id="ExpandAllLabel" style="display: none;">Expand All</label> </span><!-- Spacing --> <span id="LanguageFilterPopupLink" class="PopupLink" data-popupcontentsource="#LanguageCheckboxes" data-popuptitle='Language Filter'> <label id="ShowAllLabel" for="LanguageFilterPopupLink"> Language Filter: All </label> <label id="MultipleLabel" for="LanguageFilterPopupLink" style="display: none;"> Language Filter: Multiple </label> <label id="VBAllLabel" for="LanguageFilterPopupLink" style="display: none;"> Language Filter: Visual Basic </label> <label id="VBLabel" for="LanguageFilterPopupLink" style="display: none;">Language Filter: Visual Basic (Declaration)</label> <label id="VBUsageLabel" for="LanguageFilterPopupLink" style="display: none;">Language Filter: Visual Basic (Usage)</label> <label id="CSLabel" for="LanguageFilterPopupLink" style="display: none;">Language Filter: C#</label> <label id="CPP2005Label" for="LanguageFilterPopupLink" style="display: none;">Language Filter: C++/CLI</label> </span> <div class="PopupContent" id="LanguageCheckboxes"> <input data-languagename="VB" id="VBLanguageCheckbox" type="checkbox" class="ToggleLanguageCheckbox" checked="true" data-toggleclass="FilteredContentVB"> <label class="LanguageFilter" for="VBCheckbox"> Visual Basic (Declaration) </label> <br><input data-languagename="VBUsage" id="VBUsageLanguageCheckbox" type="checkbox" class="ToggleLanguageCheckbox" checked="true" data-toggleclass="FilteredContentVBUsage"> <label class="LanguageFilter" for="VBUsageCheckbox"> Visual Basic (Usage) </label> <br><input data-languagename="CS" id="CSLanguageCheckbox" type="checkbox" class="ToggleLanguageCheckbox" checked="true" data-toggleclass="FilteredContentCS"> <label class="LanguageFilter" for="CSCheckbox"> C# </label> <br><input data-languagename="CPP2005" id="CPP2005LanguageCheckbox" type="checkbox" class="ToggleLanguageCheckbox" checked="true" data-toggleclass="FilteredContentCPP2005"> <label class="LanguageFilter" for="CPP2005Checkbox"> C++/CLI </label> </div> </div> <div class="BreadcrumbsContainer"><table><tr><td> <a href="C1.Win.C1Win7Pack.4.html">C1.Win.C1Win7Pack.4 Assembly</a> > <a href="C1.Win.C1Win7Pack.4~C1.Win.C1Win7Pack_namespace.html">C1.Win.C1Win7Pack Namespace</a> > <a href="C1.Win.C1Win7Pack.4~C1.Win.C1Win7Pack.C1JumpList.html">C1JumpList Class</a> : ClearKnownCategories Method</td></tr></table></div> <div id="BodyContent"> <div class="DescriptionContent">Clears all destination entries from the Recent and Frequent categories in an application's Jump List.</div> <div class="SectionHeading" id="syntaxSectionHeading"><span class="SectionHeadingIcon"><!-- --></span><span class="SectionHeadingText">Syntax</span></div><div id="syntaxSectionContent" class="SectionContent"> <div class="TabContainer" id="TabContainer"> <ul> <li class="FilteredContentVB"><a href="#Syntax-VB">Visual Basic (Declaration)</a></li> <li class="FilteredContentVBUsage"><a href="#Syntax-VBUsage">Visual Basic (Usage)</a></li> <li class="FilteredContentCS"><a href="#Syntax-CS">C#</a></li> <li class="FilteredContentCPP2005"><a href="#Syntax-CPP2005">C++/CLI</a></li> </ul> <div id="Syntax-VB" class="FilteredContentVB"> <pre>Public Sub ClearKnownCategories() </pre> </div> <div id="Syntax-VBUsage" class="FilteredContentVBUsage"> <pre>Dim instance As <a href="C1.Win.C1Win7Pack.4~C1.Win.C1Win7Pack.C1JumpList.html">C1JumpList</a> instance.ClearKnownCategories()</pre> </div> <div id="Syntax-CS" class="FilteredContentCS"> <pre>public void ClearKnownCategories()</pre> </div> <div id="Syntax-CPP2005" class="FilteredContentCPP2005"> <pre>public: void ClearKnownCategories(); </pre> </div> </div> </div> <div class="SectionHeading" id="remarksSectionHeading"><span class="SectionHeadingIcon"><!-- --></span><span class="SectionHeadingText">Remarks</span></div><div id="remarksSectionContent" class="SectionContent">This method does not remove items that the user has pinned to the Jump List. Those items cannot be removed programmatically; only the user can remove them. However, it does remove usage data for those pinned items.</div> <a name="exampleBookmark"></a> <div class="SectionHeading" id="requirementsSectionHeading"><span class="SectionHeadingIcon"><!-- --></span><span class="SectionHeadingText">Requirements</span></div><div id="requirementsSectionContent" class="SectionContent"><p><b>Target Platforms:</b> Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2</p></div> <a name="seealsobookmark"></a> <div class="SectionHeading" id="seealsoSectionHeading"><span class="SectionHeadingIcon"><!-- --></span><span class="SectionHeadingText">See Also</span></div><div id="seealsoSectionContent" class="SectionContent"><h4 class="subHeading">Reference</h4><p><a href="C1.Win.C1Win7Pack.4~C1.Win.C1Win7Pack.C1JumpList.html">C1JumpList Class</a> <br><a href="C1.Win.C1Win7Pack.4~C1.Win.C1Win7Pack.C1JumpList_members.html">C1JumpList Members</a> </p> </div> </div> <div id="FooterContent"> <p> </p><p> </p><hr style="height: 1px"><p>Copyright (c) <script type="text/javascript"> var theDate=new Date() document.write(theDate.getFullYear()) </script> GrapeCity, inc. 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