ASP.Net Error: header-category is not a valid identifier

chetan

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User: chetan
Posted: on Sep 24, 2018 04:16 AM
Forum: ASP.Net Web Forms
Answer: 1
Views: 4855

I want to access a HTML control on server side, but while adding runat= server, it is giving me error as "header-category" is not a valid identifier. What is happening is that, if i remove hyphen from header-category and keep runat=server it works but dropdownlist not coming.

if i keep hyphen and keep runat="server", it gives me not valid identifier error.

<input type="text" id="header-category" runat="server" value="Acupuncture" class="ui-autocomplete-input" autocomplete="off">

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dharmend...

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User: dharmendr
Replied: on Sep 24, 2018 04:18 AM
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Hi chetan,

According to Microsoft,

Only combinations of alphanumeric characters and the underscore character ( _ ) are valid values for Control.ID Property. Including spaces or other invalid characters will cause an ASP.NET page parser error.

For more details refer below link.

https://docs.microsoft.com/en-us/dotnet/api/system.web.ui.control.id?redirectedfrom=MSDN&view=netframework-4.7.2#System_Web_UI_Control_ID

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ASP.Net Error: header-category is not a valid identifier

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