</ iframe > </noscript> <!-- End Google Tag Manager (noscript) --> <div id="BeforeHeaderContent"> </div> <div id="HeaderContent"> <!--DXMETADATA start type="Literal" condition="communityenabled" value="%%scrap:name=_COMMUNITY_RATING%%" --><!--DXMETADATA end --> <!--DXMETADATA start type="LogoImage" --><!--DXMETADATA end--> <div id="ProjectTitle"><!--DXMETADATA start type="ProjectTitle" -->WPF and Silverlight Edition Basic Library <!--DXMETADATA end--></div> <div id="PageTitle"><div id="PageTitleText"><!--DXMETADATA start type="ItemTitle" -->Launching with the Drop-Down List Open<!--DXMETADATA end--></div></div> </div> <div id="AfterHeaderContent"> <!-- Spacing --> <span id="ToggleAllSectionsLink" class="FunctionLink"> <label id="CollapseAllLabel"><!--DXMETADATA start type="Phrase" name="COLLAPSE_ALL" -->Collapse All<!--DXMETADATA end--></label> <label id="ExpandAllLabel" style="display: none;"><!--DXMETADATA start type="Phrase" name="EXPAND_ALL" -->Expand All<!--DXMETADATA end--></label> </span><!--DXMETADATA start type="Literal" condition="communityenabled" value="%%scrap:name=_COMMUNITY_DROPDOWN%%" --><!--DXMETADATA end --> </div> <!--DXMETADATA start type="Breadcrumbs" scrap="_BREADCRUMBS" --><div class="BreadcrumbsContainer"><table><tr><td> <a href="WPF and Silverlight Edition Basic Library.html">WPF and Silverlight Edition Basic Library</a> > <a href="ComboBox.html">Combo Box</a> > ComboBox Features > Drop-Down List > Launching with the Drop-Down List Open</td></tr></table></div><!--DXMETADATA end --> <div id="BodyContent"> <!--DXMETADATA start type="TopicSection" name="BodyText"--><p>To launch the <a href="C1.WPF.4~C1.WPF.C1ComboBox.html">C1ComboBox</a> with its drop-down list open, set the <a href="C1.WPF.4~C1.WPF.C1ComboBox~IsDropDownOpen.html">IsDropDownOpen</a> property to <strong>True</strong>.</p> <div class="TabContainer TabContainerWidget"> <ul> <li class="FilteredContent766ed740-3736-4ac1-9982-06f368ef38c6"><a href="#TabContent-766ed740-3736-4ac1-9982-06f368ef38c6">In XAML</a></li> <li class="FilteredContent1dd11d32-fcfa-45d9-b305-46586fe80d08"><a href="#TabContent-1dd11d32-fcfa-45d9-b305-46586fe80d08">In Code</a></li> <li class="FilteredContentfde95348-0da6-4d84-9415-669d08c33c76"><a href="#TabContent-fde95348-0da6-4d84-9415-669d08c33c76">In the Designer</a></li> </ul> <div id="TabContent-766ed740-3736-4ac1-9982-06f368ef38c6" class="FilteredContent766ed740-3736-4ac1-9982-06f368ef38c6"> <div data-title="In XAML"> <p>Complete the following steps:</p> <ol> <li>Add <strong>IsDropDownOpen="True"</strong> to the <strong><c1:C1ComboBox></strong> tag so that the markup resembles the following:</li> </ol> <blockquote style="MARGIN-RIGHT: 0px" dir="ltr"> <div class="FilteredContentCS" data-title="CS" data-itemid="CS"> <table class="SyntaxTable"> <tbody> <tr> <th>XAML</th> <th> <div class="CopyCodeWrapper"> <span class="CopyCode">Copy Code</span> </div> </th> </tr> <tr> <td colspan="2"> <pre> <c1:C1ComboBox HorizontalAlignment=<span style="COLOR: #800000">"Left"</span> Width=<span style="COLOR: #800000">"249"</span> IsDropDownOpen=<span style="COLOR: #800000">"True"</span>> </pre> </td> </tr> </tbody> </table> </div> </blockquote> <ol style="COUNTER-RESET: item 1" start="2"> <li>Run the program and observe that the drop-down list is open upon page load.</li> </ol> </div> </div> <div id="TabContent-1dd11d32-fcfa-45d9-b305-46586fe80d08" class="FilteredContent1dd11d32-fcfa-45d9-b305-46586fe80d08"> <div data-title="In Code"> <p>Complete the following steps:</p> <ol> <li>Add <strong>x:Name="C1ComboBox1"</strong> to the <strong><c1:C1ComboBox></strong> tag so that the object will have a unique identifier for you to call in code.</li> <li>Open the MainPage.xaml.cs or the MainWindow.xaml.cs page.</li> <li>Add the following code beneath the <strong>InitializeComponent()</strong> method:</li> </ol> <blockquote style="MARGIN-RIGHT: 0px" dir="ltr"> <div class="FilteredContentCS" data-title="CS" data-itemid="CS"> <table class="SyntaxTable"> <tbody> <tr> <th>Visual Basic</th> <th> <div class="CopyCodeWrapper"> <span class="CopyCode">Copy Code</span> </div> </th> </tr> <tr> <td colspan="2"> <pre> C1ComboBox1.IsDropDownOpen = True </pre> </td> </tr> </tbody> </table> </div> <p> <div class="FilteredContentCS" data-title="CS" data-itemid="CS"> <table class="SyntaxTable"> <tbody> <tr> <th>C#</th> <th> <div class="CopyCodeWrapper"> <span class="CopyCode">Copy Code</span> </div> </th> </tr> <tr> <td colspan="2"> <pre> C1ComboBox1.IsDropDownOpen = <span style="COLOR: #0000ff">true</span>; </pre> </td> </tr> </tbody> </table> </div> </blockquote> <ol style="COUNTER-RESET: item 3" start="4"> <li>Run the program and observe that the drop-down list is open upon page load.</li> </ol> </div> </div> <div id="TabContent-fde95348-0da6-4d84-9415-669d08c33c76" class="FilteredContentfde95348-0da6-4d84-9415-669d08c33c76"> <div data-title="In the Designer"> <p>Complete the following steps:</p> <ol> <li>Click the <strong>C1ComboBox</strong> control once to select it.</li> <li>In the <strong>Properties</strong> window, select the <strong>IsDropDownOpen</strong> check box.</li> <li>Run the program and observe that the drop-down list is open upon page load.</li> </ol> </div> </div> </div> <p> </p><!--DXMETADATA end--> <a name="seealsobookmark"></a> <!--DXMETADATA start type="FilteredItemList" scrap="CATEGORISED_LINKS" namespace="linkcategory" source="Item" filter="" NoHeader="True" NoFooter="True" format="%%replaceinquotes:value=false%%%%scrap:name=_COLLAPSIBLE_HEADER,idprefix=seealso,caption=""%%phrase:name=SeeAlso%%%%designlist:tagidentifier=seealso,itemtype=See Also%%""%%%%filtereditemlist%%</div>"--><!--DXMETADATA end--> </div> <div id="FooterContent"> <!--DXMETADATA start type="Scrap" condition="communityenabled" name="_COMMUNITY_FOOTER" --><!--DXMETADATA end --> <!--DXMETADATA start type="Variable" name="CopyrightNotice" format="<p> </p><p> </p><hr style=""height: 1px"" /><p>%%variable%%</p>" --><p> </p><p> </p><hr style="height: 1px"><p>Copyright © <script type="text/javascript"> var theDate=new Date() document.write(theDate.getFullYear()) </script> GrapeCity, inc. All rights reserved.</p><!--DXMETADATA end --> <!--DXMETADATA start type="Variable" name="FeedbackLink" format="" --><a href="http://our.componentone.com/groups/" target="_blank">Product Support Forum</a> | <a href="http://feedback.componentone.com/forums/272000-wpf-and-silverlight-documentation" target="_blank">Documentation Feedback</a> <!--DXMETADATA end--> </div> </body> </html>