wpf - How to reference types in executing assembly namespace when parsing with XamlReader.Load() -


this xaml in @"data/example.xml". it's text file ("content", "copy always") parse using xamlreader.load() @ runtime, because design decision:

<datatemplate     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"     xmlns:local="clr-namespace:testproject"     >     <datatemplate.resources>         <local:typenameconverter x:key="typename" />     </datatemplate.resources>     <label          content="{binding converter={staticresource typename}}"          /> </datatemplate>

it's fine without value converter , local namespace attribute. those, when parsed xamlreader.load(), throws exception:

'cannot create unknown type '{clr-namespace:testproject}typenameconverter'.' line number '7' , line position '10'.

my question is:

is there way make assembly reference work executing assembly in scenario?

some more detail things are, how think ruled out errors on part, , alternate approaches work:

typenameconverter arbitrary value converter defined in executing assembly -- assembly calling xamlreader.load(). instantiates you'd expect in mainwindow.xaml. 

namespace testproject {     /// <summary>     /// interaction logic mainwindow.xaml     /// </summary>     public partial class mainwindow : window     {         public mainwindow()         {             initializecomponent();              using (xmltextreader reader = new xmltextreader(@"data/example.xml"))             {                 //  demonstrating exception here.                 xamlreader.load(reader);             }         }      }      public class typenameconverter : ivalueconverter     {         public object convert(object value,              type targettype, object parameter, cultureinfo culture)         {             if (value == null)                 return "";              return value.gettype().name;         }          public object convertback(object value,              type targettype, object parameter, cultureinfo culture)         {             throw new notimplementedexception();         }     } }

the following attempts @ defining namespace failed:

    xmlns:local="clr-namespace:testproject;assembly=."     xmlns:local="clr-namespace:testproject;assembly="     xmlns:local="clr-namespace:testproject;assembly=testproject.exe"

the second 1 apparently documented @ point , never worked, didn't cost me try it.

what succeeded creating second assembly contained converter:

<datatemplate     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"     xmlns:ext="clr-namespace:xamlextensions;assembly=myotherassembly"     >     <datatemplate.resources>         <ext:typenameconverter x:key="typename" />     </datatemplate.resources>     <label          content="{binding converter={staticresource typename}}"          /> </datatemplate>

obviously go in window.resources well. that's the user sparked question going end doing.


Comments

Post a Comment

Popular posts from this blog

inversion of control - Autofac named registration constructor injection -

does autofac support specifying registration name in components' constructors? example: ninject's namedattribute . you need use autofac.extras.attributed package on top achieve this so let's have 1 interface , 2 classes: public interface ihello { string sayhello(); } public class englishhello : ihello { public string sayhello() { return "hello"; } } public class frenchhello : ihello { public string sayhello() { return "bonjour"; } } then have consumer class, in want select instance injected: public class helloconsumer { private readonly ihello helloservice; public helloconsumer([withkey("en")] ihello helloservice) { if (helloservice == null) { throw new argumentnullexception("helloservice"); } this.helloservice = helloservice; } public string sayhello() { return this.helloservice.sayhello()...
Read more

verilog - Systemverilog dynamic casting issues -

i've code snippet following in testbench function void write_to_port( my_data_type_base data ); my_data_type_extended data_ext; if(!$cast(data_ext, data)); `uvm_error(get_type_name(), "failed cast"); `uvm_info(get_name(), $psprintf("data_ext :\n%s", data_ext.sprint()), uvm_medium) // write data_ext out port.... endfunction when run it, i'm getting uvm_error "failed cast." i'm not quire sure why $cast not returning 1. can see, i'm printing out extended class data item after casting uvm_info. can see it's being cast properly. if don't use $cast if condition, don't runtime error. isn't coding practice use if dynamic cast check if $cast returning 1 ? what might reason behind cast not returning 1 in above case? i think semicolon on line 'if' not belong? i think consumes if statement, , uvm_error executes regardless of how if evaluates: if(!$cast(data_ext, data)); <- no semico...
Read more

ios - Change Storyboard View using Seague -

i have following code checks connection server, , depending on want change views if no connection found. nsstring *connect = [nsstring stringwithcontentsofurl:[nsurl urlwithstring:@"http://myserver.com"] encoding:nsutf8stringencoding error:nil]; if (connect == null) { [self performseguewithidentifier:@"network_failure" sender:self]; } else { // other code here } my problem not change views. have added storyboard segue between 2 views identifier of network_failure . not have navigation controller or that, problem? thanks help! no not problem. first of all, in objectivec exists nil object oriented null . must use that. so: if(connect == nil) or better: if(!connect) so due fact nil not same of null , probably code does't enter in if scope . you have been able discover breakpoint. anyway: be sure set trigger segue (line) 2 view controller , , name network_failure (that not best name. should instead view1toview2 ) as, m...
Read more