<source lang = "xml">
<controls:EvalExpression x:Name="Name_FilterExpression" Context="{Binding}" Expression="(INPUT==null||INPUT=="") ? "true==true" : EXP">
<controls:EvalExpressionParameter Name="EXP" Value="{Binding StoredProfileParameters[name], Converter={StaticResource StringFormatConverter}, ConverterParameter='Item.PropertyItems["NAME"].ToString("yyyy/MM/dd").EqualsContains("{0}")==true'}" />
<controls:EvalExpressionParameter Name="INPUT" Value="{Binding StoredProfileParameters[name]}" />
</controls:EvalExpression>