c# - Complex MultiBinding validation -

i have form has multiple fields. have "validate" button action db input. button activated if bare minimum fields defined user.

so far quite simple fields text:

<button x:name="manage" content="manage">     <button.isenabled>         <multibinding mode="oneway" converter="{staticresource fieldsfilledintovisible}">             <binding elementname="name1" path="text"/>             <binding elementname="name2" path="text"/>         </multibinding>     </button.isenabled> </button> 

converter being:

public class allvaluesdefinedconverter : imultivalueconverter {     public object convert(object[] values, type targettype, object parameter, cultureinfo culture)     {         bool isenabled = false;         (int = 0; < values.length; i++)         {             isenabled = isenabled || string.isnullorempty(values[i].tostring());         }         return !isenabled;     }      public object[] convertback(object value, type[] targettypes, object parameter, cultureinfo culture)     {         return null;     } } 

but have consider check boxes, condition should [any of these checkboxes checked + previous text fields defined --> activate validation button]:

<wrappanel style="{staticresource wrapstyle_inputs}">     <checkbox content="check1" ischecked="{binding checked1, mode=twoway}"/>     <checkbox content="check2" ischecked="{binding checked2, mode=twoway}"/>     <checkbox content="check3" ischecked="{binding checked3, mode=twoway}"/> </wrappanel> 

would know how so?

thank you!

converters wrong tool job. should instead @ validation, commands, , view models. view model implement validation logic , expose command button bound to. command executable if validation logic passes.