R – Silverlight Toolkit DatePicker error indicator

datepickersilverlightsilverlight-3.0silverlight-toolkit

I don't seem to be able to get the red border line error provider for my date picker controls. I'm throwing validation exceptions on the setter of the bound to property as I have with my other controls on the form. I get the error indicator on all my controls on the form but the date picker ones. any help appreciated.

Best Answer

This is a hard one, the Visual States are missing (or were purposely excluded) in controls that were migrated from the Silverlight toolkit

Here's another post on the topic that helped me out

Related Solutions

R – Silverlight 3 validation DataForm with templates

Are you using the template field?

   <df:DataFormTemplateField FieldLabelContent="Year"> 
      <df:DataFormTemplateField.DisplayTemplate> 
        <DataTemplate> 
          <TextBox Text="{Binding Year}" HorizontalAlignment="Left" /> 
        </DataTemplate> 
      </df:DataFormTemplateField.DisplayTemplate> 
      <df:DataFormTemplateField.EditTemplate> 
        <DataTemplate> 
          <TextBox Text="{Binding Year}" HorizontalAlignment="Left" /> 
        </DataTemplate> 
      </df:DataFormTemplateField.EditTemplate> 
    </df:DataFormTemplateField>

R – Silverlight 3 Validation – manual validate not working

you should write as:

[CustomValidation( typeof( MyExtraClassValidation ), "Validate" )]
public class MyExtraClass : Entity, IEditableObject, INotifyPropertyChanged
{
   /****/
}


public class MyExtraClassValidation 
{
    public MyExtraClassValidation ()
    {}

    public static ValidationResult Validate( MyExtraClass myExtraClass )
    {
        if ( /**class is not valid*/)
            return new ValidationResult( "Oops" );

        return ValidationResult.Success;
    }

}

Of course, your interfaces may be ablolutely anorther, but I reccomend you use it.

Also, you can call validateHandler from your control and check, for example, after every user key pressing.

Best Answer

Related Solutions

R – Silverlight 3 validation DataForm with templates

R – Silverlight 3 Validation – manual validate not working

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