Remove required message after selecting dropdown value in MVC razor

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Requried message should be cleared Post selecting dropdown value . even after selecting dropdown value still it is displaying until we submit request.

<Required(ErrorMessage:="Required field")>
    Public Property StateId As Nullable(Of Integer)

What I have tried:

tried by using javascript but did not work.

Posted 21-Feb-19 5:37am

Chinnu2020

Updated 21-Feb-19 10:05am

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MadMyche 21-Feb-19 11:44am

Please update the question to show the Rendered HTML as well as the JavaScript you are attempting to use to clear the message

Chinnu2020 21-Feb-19 11:58am

i need to disable required message post selection dropdown value

MadMyche 21-Feb-19 14:30pm

I know what you are asking for; BUT cannot help you without the code for the HTML element or the javascript you have tried to use

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Bryian Tan · Answer 1 · 2019-02-21T10:06:00

I'm guessing your app is running on .NET Framework 4.x and very likely the appsetting is missing the following entry or it was set to false. Again, this is my assumption based on the description on your post. Since the client side validation was turn off / not available, the message will stay until after a successful post to the server.

HTML

<add key="ClientValidationEnabled" value="true" />
    <add key="UnobtrusiveJavaScriptEnabled" value="true" />

More reading:
Brad Wilson: Unobtrusive Client Validation in ASP.NET MVC 3[^]