</ iframe > </noscript> <!-- End Google Tag Manager (noscript) --> <div id="BeforeHeaderContent"> </div> <div id="HeaderContent"> <div id="ProjectTitle">Menus and Toolbars for WinForms</div> <div id="PageTitle"><div id="PageTitleText">SelectedIndexChanging Event (C1DockingTab)</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="CSLabel" for="LanguageFilterPopupLink" style="display: none;">Language Filter: C#</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="CS" id="CSLanguageCheckbox" type="checkbox" class="ToggleLanguageCheckbox" checked="true" data-toggleclass="FilteredContentCS"> <label class="LanguageFilter" for="CSCheckbox"> C# </label> </div> </div> <div class="BreadcrumbsContainer"><table><tr><td> <a href="C1.Win.C1Command.4.html">C1.Win.C1Command.4 Assembly</a> > <a href="C1.Win.C1Command.4~C1.Win.C1Command_namespace.html">C1.Win.C1Command Namespace</a> > <a href="C1.Win.C1Command.4~C1.Win.C1Command.C1DockingTab.html">C1DockingTab Class</a> : SelectedIndexChanging Event</td></tr></table></div> <div id="BodyContent"> <div class="DescriptionContent">Event fired when the index of the currently selected page is about to change. Allows to cancel the change.</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="FilteredContentVBAll"><a href="#Syntax-VBAll">Visual Basic</a></li> <li class="FilteredContentCS"><a href="#Syntax-CS">C#</a></li> </ul> <div id="Syntax-VB" class="FilteredContentVB"> <pre>'Declaration Public Event SelectedIndexChanging As <a href="C1.Win.C1Command.4~C1.Win.C1Command.SelectedIndexChangingEventHandler.html">SelectedIndexChangingEventHandler</a></pre> </div> <div id="Syntax-CS" class="FilteredContentCS"> <pre>public event <a href="C1.Win.C1Command.4~C1.Win.C1Command.SelectedIndexChangingEventHandler.html">SelectedIndexChangingEventHandler</a> SelectedIndexChanging</pre> </div> </div> </div> <div class="SectionHeading" id="exceptionsSectionHeading"><span class="SectionHeadingIcon"><!-- --></span><span class="SectionHeadingText">Event Data</span></div><div id="exceptionsSectionContent" class="SectionContent"><p>The event handler receives an argument of type <a href="C1.Win.C1Command.4~C1.Win.C1Command.SelectedIndexChangingEventArgs.html">SelectedIndexChangingEventArgs</a> containing data related to this event. The following <b>SelectedIndexChangingEventArgs</b> properties provide information specific to this event.</p><table class="FilteredItemListTable"><tr><th>Property</th><th>Description</th></tr><tr><td class="LinkCell"><a href="C1.Win.C1Command.4~C1.Win.C1Command.SelectedIndexChangingEventArgs~Cancel.html">Cancel</a></td><td class="DescriptionCell"> (Inherited from System.ComponentModel.CancelEventArgs)</td></tr></table></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.C1Command.4~C1.Win.C1Command.C1DockingTab.html">C1DockingTab Class</a> <br><a href="C1.Win.C1Command.4~C1.Win.C1Command.C1DockingTab_members.html">C1DockingTab 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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