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Editorial Team
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Asked: 2026-06-06T18:28:38+00:00

I am working on a new project for a client; they have supplied the

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I am working on a new project for a client; they have supplied the site design which I need to move onto our content management system.

.NET doesn’t seem to like the id’s that are scattered throughout the theme.

Is there any reason why – throws …is not a valid identifier?

Cheers for any responses.

Examples

<form id="login-form" runat="server">

<input type="text" name="username" runat="server" id="login-username" placeholder="Username" />

Update

Seems that changing – to _ fixes the issue. Answer below!

Matt

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1 Answer

  1. Editorial Team

    In ASP.NET, when you use runat="SERVER", then the “ID” naming convention must follow the naming convention of the properties and fields. The “-” character is not allowed in field names.

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