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Editorial Team
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Asked: 2026-05-25T12:55:47+00:00

For some reasons I don’t know all the elements references in my .aspx.cs are

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For some reasons I don’t know all the elements references in my .aspx.cs are undefined. For example:
In MyPage.aspx I have <asp:TextBox runat="server" ID="UserName" /> and in MyPage.aspx.cs I do UserName.Text="abc". Then after building I get an error that sais: The name 'UserName' does not exist in the current context.

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Even in my Global.asax I get an error that sais the characters are not recognized:
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I really don’t know what it is, maybe something with my namespaces or something like that. But as I see – all the namespaces are correct.
How can I solve those errors?

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1 Answer

  1. Editorial Team

    If you’ve added some of the *.aspx and *.ascx files from another project, check that the build action of the *.aspx.designer.cs and *.aspx.cs files are set to compile.

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