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Editorial Team
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Asked: 2026-05-14T09:40:04+00:00

What is the default for ClientIdMode on a) Page b) Control c) UserControl From

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What is the default for ClientIdMode on

a) Page
b) Control
c) UserControl

From what I have read it is Predictable, Inherit, Inherit. I expected the default on the Page to be AutoId. Wouldn’t Predictable break things?

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1 Answer

  1. Editorial Team

    MSDN says:

    The default value of ClientIDMode for a page is Predictable. The
    default value of ClientIDMode for a control is Inherit. Because the
    default for controls is Inherit, the default generation mode is
    Predictable. (However, if you use Visual Studio to convert a Web
    project to ASP.NET 4 from an earlier version, Visual Studio
    automatically sets the site default to AutoID in the Web.config file.)

    But also should mention that some old pages on MSDN still says that default value of ClientIDMode for a page is AutoID (e.g. here) as was stated in my previous answer.

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