c# - Why can't I bind to a field on a class in WPF instead of binding to a property -

c# - Why can't I bind to a field on a class in WPF instead of binding to a property -

possible duplicate: why wpf back upwards binding properties of object, not fields?

it appears in wpf cannot bind public field on object, public properties. intentional design decision on part of wpf, or getting syntax wrong?

here's sample snippet:

public class user { public string username; public string fullname; public string displayname { { homecoming fullname; } } }

wpf snippet:

<window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" title="user tool" > <window.resources> <datatemplate x:key="usertemplate"> <textblock text="{binding path=displayname}" /> </datatemplate> </window.resources> <listbox name="listboxusers" itemtemplate="{staticresource usertemplate}" itemssource="..." /> </window>

if alter binding path username or fullname, nil shows on screen. there alternate syntax bind fields, or binding allowed on properties?

fields not part of binding source spec

common language runtime (clr) objects

you can bind public properties, sub-properties, indexers, of mutual language runtime (clr) object. binding engine uses clr reflection values of properties. alternatively, objects implement icustomtypedescriptor or have registered typedescriptionprovider work binding engine.

for more info how implement class can serve binding source, see implementing class binding source later in topic.

dynamic objects

you can bind available properties , indexers of object implements idynamicmetaobjectprovider interface. if can access fellow member in code, can bind it. example, if dynamic object enables access fellow member in code via someobjet.aproperty, can bind setting binding path aproperty.

ado.net objects

you can bind ado.net objects, such datatable. ado.net dataview implements ibindinglist interface, provides alter notifications binding engine listens for.

xml objects

you can bind , run xpath queries on xmlnode, xmldocument, or xmlelement. convenient way access xml info binding source in markup utilize xmldataprovider object. more information, see how to: bind xml info using xmldataprovider , xpath queries.

you can bind xelement or xdocument, or bind results of queries run on objects of these types using linq xml. convenient way utilize linq xml access xml info binding source in markup utilize objectdataprovider object. more information, see how to: bind xdocument, xelement, or linq xml query results.

dependencyobject objects

you can bind dependency properties of dependencyobject. example, see how to: bind properties of 2 controls.

c# .net wpf binding