vb.net - Databound ErrorProvider not blinking -

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i have error provider on form has datasource bound collection of errors in record class:

error provider debug hover over

the validation working expect, red blinking icon not appear next form controls. record implements idataerrorinfo:

    public readonly property [error] string implements idataerrorinfo.error                     if _errors.count > 0                 return string.format("the record cannot saved because there {0} errors", _errors.count)             else                 return string.empty             end if         end     end property     ''' <summary>     ''' gets error message property given name     ''' </summary>     ''' <value></value>     ''' <returns></returns>     default public readonly property propertyerror(fieldname string) string implements idataerrorinfo.item                     if _errors.containskey(fieldname)                 return _errors(fieldname).tostring             else                 return string.empty             end if         end     end property

any thoughts appreciated i'm stuck.

the problem caused adding errors collection using control names e.g. staticbalancesoosreasonvalue" , trying retrieve them idataerrorinfo.propertyerror method using property names e.g. "staticbalancesoosreason". that's fixed icons display.


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