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Editorial Team
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Asked: 2026-05-27T23:27:10+00:00

I have a queryparameter named from (a from date) and also a input which

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I have a queryparameter named “from” (a from date)
and also a input which binds to a property named From

In my ViewModel contructor i set the From property to a date…

This works if the query parameter name and the property name are different, but if they are same MVC3 with some magic takes whatever value there are in the query param and binds against that, it does not care what value are in the From property.. Why? this atuomagic is so wrong on so many levels! How do I disable it?

edit: It doesnt matter what value the Property gets, if a querystring exists with the same id as the input MVC automatic takes that value and assign it to the input element

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1 Answer

  1. Editorial Team

    You need to call

    ModelState.Clear();

    Before returning from your controller action.

    The issue is that the ModelState has the value from the query string, and that takes precedence over the value in your model when binding occurs.

    Whether this is a bug or a feature depends on your point of view… http://blogs.msdn.com/b/simonince/archive/2010/05/05/asp-net-mvc-s-html-helpers-render-the-wrong-value.aspx

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