c# - How to make required validator or other validator being triggered error in Page_load even if no error? -

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Page_load Even if there is no error, due to an error in the required verifier or other verifier?

Scroll bar (0,0) unsuccessful and set the focus of a link failed, I came up with an idea to create a necessary validator at the top of the page, then there are no errors But also hope to trigger the error.

The target iframe has a focus on the top of the page rather than the end of the page

In Asp.net, set the "overflow" property in the div in the iframe, like "overflow: auto", the scroll bar is the default at the top, I think this is a property problem.

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