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POChange Form Field Visibility in ModalPopupExtender
 

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  1. POChange Form Field Visibility in ModalPopupExtender
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    <p>Wanted to know if there's a way to change a form field's visibility within a ModalPopup (from ModalPopupExtender) based upon a DropDownList's change in value. This page's technique doesn't seem to work: <a href="https://stackoverflow.com/questions/7773/change-visibility-of-asp-net-label-with-javascript">Change visibility of ASP.NET label with JavaScript</a>.</p> <p>Javascript:</p> <pre><code>&lt;script type="text/javascript"&gt; function ShowHide() { if(document.getElementById('&lt;%=DdlASVisibilityTest.ClientID%&gt;') == "Show") { document.getElementById('&lt;%=LblASBillingName.ClientID%&gt;').style.display = 'inherit'; document.getElementById('&lt;%=TxtASBillingName.ClientID%&gt;').style.display = 'inherit'; } if(document.getElementById('&lt;%=DdlASVisibilityTest.ClientID%&gt;') == "Hide") { document.getElementById('&lt;%=LblASBillingName.ClientID%&gt;').style.display = 'none'; document.getElementById('&lt;%=TxtASBillingName.ClientID%&gt;').style.display = 'none'; } { &lt;/script&gt; </code></pre> <p>asp.net:</p> <pre><code>&lt;asp:ModalPopupExtender OKControlID="BtnASOkay" CancelControlID="BtnASCancel" BackgroundCssClass="modalBackground" DropShadow="True" ID="BtnAddSupplier_ModalPopupExtender" runat="server" DynamicServicePath="" Enabled="True" TargetControlID="BtnAddSupplier" PopupControlID="PnlAddSupplier"&gt; &lt;Animations&gt; &lt;OnShown&gt; &lt;FadeIn Duration="0.25" Fps="40" /&gt; &lt;/OnShown&gt; &lt;OnHiding&gt; &lt;FadeOut Duration="0.25" Fps="40" /&gt; &lt;/OnHiding&gt; &lt;/Animations&gt; &lt;/asp:ModalPopupExtender&gt; &lt;asp:RoundedCornersExtender ID="RCE" runat="server" TargetControlID="PnlAddSupplier" Radius="6" Corners="All" /&gt; &lt;asp:Button ID="BtnAddSupplier" runat="server" CssClass="buttonsmall" Text="Add Suplier" /&gt; &lt;asp:Panel ID="PnlAddSupplier" CssClass ="panel" runat="server"&gt; &lt;div class="ASHeader"&gt; &lt;asp:Label ID="LblASHeader" runat="server" Text="Add Supplier" CssClass="bodytxt" Font-Bold="True"&gt;&lt;/asp:Label&gt; &lt;/div&gt; &lt;div class="ASInputs"&gt; &lt;asp:Table runat="server"&gt; &lt;asp:TableRow ID="TRASVisibilityTest" runat="server"&gt; &lt;asp:TableCell ID="TCLblASVisibilityTest" runat="server"&gt;&lt;asp:Label ID="LblASVisibilityTest" runat="server" Text="Test Visibility" CssClass="bodytxt" Font-Bold="False"&gt;&lt;/asp:Label&gt;&lt;/asp:TableCell&gt; &lt;asp:TableCell ID="TCDdlASVisibilityTest" runat="server"&gt;&lt;asp:DropDownList ID="DdlASVisibilityTest" runat="server" onchange="ShowHide()"&gt; &lt;asp:ListItem&gt;Show&lt;/asp:ListItem&gt; &lt;asp:ListItem&gt;Hide&lt;/asp:ListItem&gt; &lt;/asp:DropDownList&gt;&lt;/asp:TableCell&gt; &lt;/asp:TableRow&gt; &lt;asp:TableRow ID="TRASBillingName" runat="server"&gt; &lt;asp:TableCell ID="TCLblASBillingName" runat="server"&gt;&lt;asp:Label ID="LblASBillingName" runat="server" Text="Supplier's Billing Name" CssClass="bodytxt" Font-Bold="False" style="display: none;"&gt;&lt;/asp:Label&gt;&lt;/asp:TableCell&gt; &lt;asp:TableCell ID="TCTxtASBillingName" runat="server"&gt;&lt;asp:TextBox ID="TxtASBillingName" CssClass="bodytxt" runat="server" style="display: none;"&gt;&lt;/asp:TextBox&gt;&lt;/asp:TableCell&gt; &lt;/asp:TableRow&gt; &lt;/asp:Table&gt; &lt;/div&gt; &lt;div class="DivASControls" align="center"&gt; &lt;asp:Button ID="BtnASOkay" runat="server" CssClass="buttonsmall" Text="Add Supplier" style="display: none;" /&gt; &lt;asp:Button ID="BtnASCancel" runat="server" CssClass="buttonsmall" Text="Cancel" /&gt; &lt;/div&gt; &lt;/asp:Panel&gt; </code></pre> <p>Thanks a lot in advance!</p>
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