wpf - ResourceDictionary Source Binding to Module (for Localization) -

i have xaml window has set of strings bound objects so:

<label content="{staticresource labelusername}" horizontalalignment="right" name="label1" verticalalignment="center" /> 

this code works fine when define resoucedictionary this:

<window.resources>     <resourcedictionary >         <resourcedictionary.mergeddictionaries>             <resourcedictionary source="/strings/strings_en-us.xaml" />         </resourcedictionary.mergeddictionaries>         <objectdataprovider x:key="objlogon" objecttype="{x:type starutilities:logon}" />     </resourcedictionary> </window.resources> 

however, want beable change strings bound from, created module looks this:

public module localizationchooser     public readonly property getlocalization uri                     return new uri("/strings/strings_en-us.xaml", urikind.relative)         end     end property end module 

then decided try changing source binding string. however, i've tried following , none work:

<resourcedictionary source="{binding source={x:static member=starui:localizationchooser.getlocalization}}" /> <resourcedictionary source="{x:static member=starui:localizationchooser.getlocalization}" /> <resourcedictionary source="{binding source=starui:localizationchooser.getlocalization}" /> <resourcedictionary source="{binding source=localizationchooser, path=getlocalization}" /> <resourcedictionary source="{binding source=starui:localizationchooser, path=getlocalization}" /> <resourcedictionary source="{binding source={x:static member=starui:localizationchooser.getlocalization}, path=getlocalization}" /> <resourcedictionary source="{binding source={x:static member=starui:localizationchooser.getlocalization}, path=localizationchooser.getlocalization}" /> <resourcedictionary source="{binding source={x:static member=starui:localizationchooser.getlocalization}, path=starui:localizationchooser.getlocalization}" /> 

all generate same error:

argumentnullexception thrown on "resourcedictionary": value cannot null.
parameter name: item

what can working?

i should mention starui namespace defined following:

xmlns:starui="clr-namespace:starui"

edit:
found change made module can code compile , run if use:

<resourcedictionary source="{x:static starui:localizationchooser.getlocalization}" /> 

however, still don't have design-time support. since module returning static item doesn't need lookup anything, there way design-time support here? if not, there way specify in xaml static reference design-time , dynamic reference run-time?

edit 2:
did write xaml specifying source statically , setting constructor 'overwrite' that. since dictionary entries same name referenced based on last 1 added, can add dictionary @ run-time still have dictionary @ design-time.

i used following localize code simply, including design-time support , enabling dynamic changing of languages.

in xaml included:

<window.resources>     <resourcedictionary>         <resourcedictionary.mergeddictionaries>             <resourcedictionary x:name="localizationstrings" source="/strings/strings_en-us.xaml" />         </resourcedictionary.mergeddictionaries>         <objectdataprovider x:key="objlogon" objecttype="{x:type starutilities:logon}" />     </resourcedictionary> </window.resources> 

in code-behind:

public sub new()      ' call required designer.     initializecomponent()      ' add initialization after initializecomponent() call.     me.resources.mergeddictionaries.add(getlocalization) end sub 

getlocation in public module:

public readonly property getlocalization resourcedictionary             dim resourcelocalization new resourcedictionary         resourcelocalization.source = new uri("/strings/strings_zh-cn.xaml", urikind.relative)         return resourcelocalization     end end property 

a sample of resourcedictionary xaml is:

<resourcedictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"                      xmlns:sys="clr-namespace:system;assembly=mscorlib">     <sys:string x:key="buttonlogon">logon</sys:string>     <sys:string x:key="buttoncancel">cancel</sys:string>     <sys:string x:key="labelusername">user name:</sys:string>     <sys:string x:key="labelpassword">password:</sys:string>     <sys:string x:key="labelkey">decryption key:</sys:string> </resourcedictionary> 

then access language string via:

<label content="{dynamicresource labelusername}" name="label1" /> 

now works great!

you need switch staticresource dynamicresource, since resource isn't available.

but cannot using bindings on resourcedictionary properties, not derive dependencyobject.