</ iframe > </noscript> <!-- End Google Tag Manager (noscript) --> <div id="BeforeHeaderContent"> </div> <div id="HeaderContent"> <div id="ProjectTitle">FinancialChart for WPF</div> <div id="PageTitle"><div id="PageTitleText">AllowNull Property</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.WPF.4~C1.WPF_namespace.html">C1.WPF Namespace</a> > <a href="C1.WPF.4~C1.WPF.C1NumericBox.html">C1NumericBox Class</a> : AllowNull Property</td></tr></table></div> <div id="BodyContent"> <div class="DescriptionContent">Gets or sets whether the user can enter nulls values.</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> <li class="FilteredContentCPP2005"><a href="#Syntax-CPP2005">C++/CLI</a></li> </ul> <div id="Syntax-VB" class="FilteredContentVB"> <pre><pre><span style="color: #008000; ">'Declaration </span> </pre><pre><span style="color: #0000FF; ">Public</span> <span style="color: #0000FF; ">Property</span> AllowNull <span style="color: #0000FF; ">As</span> <a href="#" onclick="javascript:navigateToHelp2Keyword('frlrfSystemBooleanClassTopic','System.Boolean')">Boolean</a></pre></pre> </div> <div id="Syntax-VBUsage" class="FilteredContentVBUsage"> <pre><pre><span style="color: #008000; ">'Usage </span> </pre><pre><span style="color: #0000FF; ">Dim</span> instance <span style="color: #0000FF; ">As</span> <a href="C1.WPF.4~C1.WPF.C1NumericBox.html">C1NumericBox</a> <span style="color: #0000FF; ">Dim</span> value <span style="color: #0000FF; ">As</span> <a href="#" onclick="javascript:navigateToHelp2Keyword('frlrfSystemBooleanClassTopic','System.Boolean')">Boolean</a> instance.AllowNull = value value = instance.AllowNull</pre></pre> </div> <div id="Syntax-CS" class="FilteredContentCS"> <pre><pre><span style="color: #0000FF; ">public</span> <a href="#" onclick="javascript:navigateToHelp2Keyword('frlrfSystemBooleanClassTopic','System.Boolean')">bool</a> AllowNull {<span style="color: #0000FF; ">get</span>; <span style="color: #0000FF; ">set</span>;}</pre></pre> </div> <div id="Syntax-CPP2005" class="FilteredContentCPP2005"> <pre><pre><span style="color: #0000FF; ">public</span>: property <a href="#" onclick="javascript:navigateToHelp2Keyword('frlrfSystemBooleanClassTopic','System.Boolean')">bool</a> AllowNull { <a href="#" onclick="javascript:navigateToHelp2Keyword('frlrfSystemBooleanClassTopic','System.Boolean')">bool</a> <span style="color: #0000FF; ">get</span>(); <span style="color: #0000FF; ">void</span> <span style="color: #0000FF; ">set</span> ( <a href="#" onclick="javascript:navigateToHelp2Keyword('frlrfSystemBooleanClassTopic','System.Boolean')">bool</a> <i><a class="PopupLink" id="valuePopupLink" data-popupcontentsource="#valuePopupContent" data-popupshowevent="click mouseenter"></a>value</i>); }</pre></pre> </div> </div> </div> <div class="SectionHeading" id="remarksSectionHeading"><span class="SectionHeadingIcon"><!-- --></span><span class="SectionHeadingText">Remarks</span></div><div id="remarksSectionContent" class="SectionContent">Null values are encoded in the <b>Value</b> property as <b>double.NaN</b>.</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.WPF.4~C1.WPF.C1NumericBox.html">C1NumericBox Class</a> <br><a href="C1.WPF.4~C1.WPF.C1NumericBox_members.html">C1NumericBox Members</a> </p> </div> </div> <div id="FooterContent"> <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. 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