.net - Can Generics be used with Silverlight? -

-

i have user control displays objects of client-declared type specialized behavior. use generics. however, i'm not sure how declare in xaml:

<local:editablelistbox x:name="sectionlist" margin="56,8,15,0" fontsize="64" selectionchanged="sectionlist_selectionchanged" />

listbox uses object members, makes me think perhaps there's no way have type safety here. or there?

(i'm building windows phone 7 app, if makes difference.)

update: i'm totally fine not having generics in xaml, i'm still trying figure out how set in code-behind. parameterized everything, it's still complaining.

code behind:

public partial class editablelistbox<t> : usercontrol, inotifypropertychanged t : ieditablelistmember {      public editablelistbox()     {         // error: name 'initializecomponent' not exist in current context         initializecomponent();         loaded += new routedeventhandler(editablelistbox_loaded);     }      // ...      public int selectedindex     {                 {             // error: name 'contentlistbox' not exist in current context                return contentlistbox.selectedindex;         }         set         {             // error: name 'contentlistbox' not exist in current context                contentlistbox.selectedindex = value;         }     }

the xaml:

<grid x:name="layoutroot">     <listbox x:name="contentlistbox">         <listbox.itemtemplate>             <datatemplate>                 <grid manipulationcompleted="grid_manipulationcompleted">                     <grid.columndefinitions>                         <columndefinition width="auto"/>                         <columndefinition width="*" />                     </grid.columndefinitions>                      <image source="{binding iconsource}"                            grid.column="0"                            width="96"                            height="96"                            verticalalignment="center"                            visibility="{binding editing, converter={staticresource visibilityconverter}}"                            />                      <textblock text="{binding name}"                                 grid.column="1"                                 foreground="{binding enabled, converter={staticresource enabledconverter}}" />                  </grid>             </datatemplate>         </listbox.itemtemplate>     </listbox> </grid>

it gives 2 compiler errors: listbox contentlistbox , initializecomponent() not defined. suspect problem has how class split 2 partial definitions, , mine parameterized whereas generated code not. how can around this?

no can't use generic types in silverlight xaml directly.

but familiarize mvvm pattern. models , viewmodels can generic types, , can coding there. xaml views dumb, have no or few code behind, , bind view models.


Comments

Post a Comment

Popular posts from this blog

android - Spacing between the stars of a rating bar? -

-
ho can set spacing beween stars? thats ratingbar: ratingbar = (ratingbar) inflater.inflate(r.layout.ratingbar, null); ratingbar.setlayoutparams(new layoutparams(layoutparams.wrap_content, layoutparams.wrap_content)); the layout: <?xml version="1.0" encoding="utf-8"?> <ratingbar xmlns:android="http://schemas.android.com/apk/res/android" style="@style/mystyle" android:layout_alignparentright="true" android:layout_height="19dp" android:layout_width="wrap_content" android:numstars="5"> </ratingbar> the style: <style name="mystyle" parent="@android:style/widget.ratingbar"> <item name="android:progressdrawable">@drawable/android_r2_ratingstar_yellow</item> <item name="android:indeterminatedrawable">@drawable/android_r2_ratingstar_grey</item> </style> thanks, cheers you have ...
Read more

html - Instapaper-like algorithm -

-
does of algorithm extracts contents webpage? instapaper ? there 2 steps instapaper does: find main content block on page (excluding headers, footers, menus etc) from content block extract , format text to find content block (typically html block element, div containing key page text content) instapaper uses algorithm 1 used readability . can @ source of readability.js see what's going on, @ core tries find area on page highest text/link ratio, although has other simple scoring metrics (e.g. off top of head, things ratio of text commas, para elements etc) go heuristics. once have identified root node element, relevant content, you'll need format it, if want can pull node element containing text out of source document , insert yours, in reality you'll want remove existing styles , apply own, standard , feel. if want output nice text-only can use jericho's renderer . update1 : should mention else instapaper - follow 'pagination' links (...
Read more

c# - How to execute a particular part of code asynchronously in a class -

-
i creating speech recognition engine that's going respond user commands.i have created button enable , disable speech recognition per user convenience.i have used dispose() of speech engine disable speech recoginition.here code private void button1_click(object sender, routedeventargs e) { engineon = !engineon; if (engineon) { speechengine = speech.createspeechengine(); //speech class creates , returns new speech engine. speechengine.audiolevelupdated += new eventhandler<audiolevelupdatedeventargs>(speechengine_audiolevelupdated); // use system's default microphone speechengine.setinputtodefaultaudiodevice(); speechengine.loadgrammar(new dictationgrammar()); // start listening speechengine.recognizeasync(recognizemode.multiple); } else { speechclass.myengine.dispose(); } } but disposal of speech obj...
Read more