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Asked: 2026-05-30T08:41:48+00:00

I have implemented IDataErrorInfo interface to validate my entities. <TextBox Text={Binding User.Name, ValidatesOnDataErrors=True, UpdateSourceTrigger=PropertyChanged}

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I have implemented IDataErrorInfo interface to validate my entities. 

<TextBox Text="{Binding User.Name, ValidatesOnDataErrors=True, UpdateSourceTrigger=PropertyChanged}" />

It works fine but I want to re-validate the data when the user presses the save button. Is their any way that exists to achieve this functionality in IDataErrorInfo.

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  1. Editorial Team

    Maybe you should consider using INotifyDataErrorInfo Interface

    this should give you more control… including a GetErrors method and more which you could execute on the button click command (I asume you are using MVVM)

    find Infos here:

    http://msdn.microsoft.com/en-us/library/system.componentmodel.inotifydataerrorinfo(v=vs.95).aspx

    and a good blog post here:

    http://mtaulty.com/CommunityServer/blogs/mike_taultys_blog/archive/2009/11/18/silverlight-4-rough-notes-binding-with-inotifydataerrorinfo.aspx

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