</ iframe > </noscript> <!-- End Google Tag Manager (noscript) --> <div id="BeforeHeaderContent"> </div> <div id="HeaderContent"> <div id="ProjectTitle">GanttView for WPF</div> <div id="PageTitle"><div id="PageTitleText">IndexOf(TaskProperty) 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="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><tbody><tr><td> <a href="C1.WPF.GanttView.4.html">C1.WPF.GanttView.4 Assembly</a> > <a href="C1.WPF.GanttView.4~C1.GanttView_namespace.html">C1.GanttView Namespace</a> > <a href="C1.WPF.GanttView.4~C1.GanttView.ColumnCollection.html">ColumnCollection Class</a> > <a href="C1.WPF.GanttView.4~C1.GanttView.ColumnCollection~IndexOf.html">IndexOf Method</a> : IndexOf(TaskProperty) Method</td></tr></tbody></table></div> <div id="propertyPopupContent" class="PopupContent"> </div> <div id="BodyContent"> <div class="DescriptionContent">Searches for the specified value of <a href="C1.WPF.GanttView.4~C1.GanttView.TaskPropertyColumn~Property.html">TaskPropertyColumn.Property</a> and returns the zero-based index of the corresponding column.</div> <div class="SectionHeading" id="syntaxSectionHeading"><span class="SectionHeadingIcon"><!-- --></span><span class="SectionHeadingText">Syntax</span></div><div id="syntaxSectionContent" class="SectionContent"> <div class="TabContainer ui-tabs ui-widget ui-widget-content ui-corner-all" id="TabContainer"> <ul class="ui-tabs-nav ui-helper-reset ui-helper-clearfix ui-widget-header ui-corner-all"> <li class="FilteredContentVBAll ui-state-default ui-corner-top ui-tabs-selected ui-state-active"><a href="#Syntax-VBAll">Visual Basic</a></li> <li class="FilteredContentCS ui-state-default ui-corner-top"><a href="#Syntax-CS">C#</a></li> </ul> <div id="Syntax-CS" class="FilteredContentCS ui-tabs-panel ui-widget-content ui-corner-bottom ui-tabs-hide"> <pre>public System.int IndexOf( <a href="C1.WPF.GanttView.4~C1.WPF.GanttView.TaskProperty.html">TaskProperty</a> <i><a class="PopupLink" id="propertyPopupLink" data-popupcontentsource="#propertyPopupContent" data-popupshowevent="click mouseenter">property</a></i> )</pre> </div> <div id="Syntax-VBAll" class="ui-tabs-panel ui-widget-content ui-corner-bottom"><div id="Syntax-VB" class="FilteredContentVB"> <pre>'Declaration Public Overloads Function IndexOf( _ ByVal <i><a class="PopupLink" id="propertyPopupLink" data-popupcontentsource="#propertyPopupContent" data-popupshowevent="click mouseenter">property</a></i> As <a href="C1.WPF.GanttView.4~C1.WPF.GanttView.TaskProperty.html">TaskProperty</a> _ ) As System.Integer</pre> </div> </div></div> <h4 class="dxh4">Parameters</h4><dl><dt><i>property</i></dt> <dd></dd></dl> </div> <a name="exampleBookmark"></a> <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.WPF.GanttView.4~C1.GanttView.ColumnCollection.html">ColumnCollection Class</a> <br><a href="C1.WPF.GanttView.4~C1.GanttView.ColumnCollection_members.html">ColumnCollection Members</a> <br><a href="C1.WPF.GanttView.4~C1.GanttView.ColumnCollection~IndexOf.html">Overload List</a> </p> </div> </div> <div id="FooterContent"> </div> <div id="lbOverlay" style="display: none;"></div><div id="lbCenter" style="display: none;"><div id="lbImage"><div style="position: 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