SilverlightShow: Creating a Silverlight Custom Control - The Basics Comments

RE: Creating a Silverlight Custom Control - The Basics

( Brandon) — Mon, 21 Jun 2010 02:38:57 +0300

I am trying to design a basic control, basically a content window with a title.

On par with your example I would need a dependancy property "Title". How do I make it so that the actual label inside the control is set/bound to the value of "Title"? Since the label is inside of a template I can't actually reference it and since the DataContext of the control is bound to something else. I don't see you doing anything with your dependancy property above, I am confused.

RE: Creating a Silverlight Custom Control - The Basics

( C# Student) — Fri, 19 Mar 2010 22:41:50 +0300

I got the same problem as Anand, further investigation of what causes the error led me to find that the Template is not set for my control. Any help would be welcomed

RE: Creating a Silverlight Custom Control - The Basics

( Anand) — Tue, 04 Aug 2009 00:17:21 +0300

Hi,

I am using Silverlight 2 env for my development. I have created a silverlight control library to create some custom controls which i would be using in my application. I was able to create the project sucessfully add a custom control and integrate with another appication to consume the control, that too works good. Now I try to add another custom control to the same project I did the following steps.

1. Created a cs file for the second custom control.

2. in generic.xaml I added another style tag to the rescource dictionary for the new custom control.

3. did all the coding part in cs file required and complied the app.

4. referenced the app to another project to consume it. Now i see the custom control 1 and as well the custom control 2 have runtime error(its just the AG_E_UNKOWN_Error).

But without the style block for the second control in the resource dictionary my custom control 1 works fine if i add the style for the custom control 2. It cause the runtime error.

Could any pls correct me if am not using resourcedictionary properly or is there anything else Iam missing to have a library containing more than one custom control in it.

<ResourceDictionary
xmlns=http://schemas.microsoft.com/winfx/2006/xaml/presentation
xmlns:x=http://schemas.microsoft.com/winfx/2006/xaml
xmlns:sys="clr-namespace:System.Windows;assembly=System.Windows"
xmlns:xyzCtl="clr-namespace:xyzCtlLibrary"
xmlns:vsm="clr-namespace:System.Windows;assembly=System.Windows" >
<Style TargetType="xyzCtl:Expander">
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
<Setter Property="VerticalContentAlignment" Value="Stretch"/>
<Setter Property="Template">
   <Setter.Value>
    <ControlTemplate TargetType="xyzCtl:Expander">

    ControlTemplate>
   Setter.Value>
Setter>
Style>
<Style TargetType="xyzCtlLibrary:Widgets">
<Setter Property="Template">
   <Setter.Value>
    <ControlTemplate TargetType="xyzCtlLibrary:Widgets">

    ControlTemplate>
   Setter.Value>
Setter>
Style>
ResourceDictionary>

RE: Creating a Silverlight Custom Control - The Basics

( Exorsus) — Fri, 24 Apr 2009 14:49:22 +0300

Exceptionaly excelent explanation of this topic !!! five stars in my opinion .... thank you :-)

RE: Creating a Silverlight Custom Control - The Basics

( rollo) — Tue, 31 Mar 2009 17:45:54 +0300

I have been unable to get this to work... Has anyone else run into problems? I have tried added the .dll as a resource to blend 2. When I use the control it throws an error.

While trying to build the LinkLabel in VS2008 I get errors about WrapPanel?!?! Saying it is a namespace but is used like a type...

I am new to silverlight and my coding skills are rusty so need a little extra hand holding here.

RE: Creating a Silverlight Custom Control - The Basics

( voiddog) — Mon, 23 Mar 2009 12:38:52 +0300

Very helpful. Cheers.

RE: Creating a Silverlight Custom Control - The Basics

( freeze) — Tue, 24 Feb 2009 17:44:34 +0300

great article, thanks.

RE: Creating a Silverlight Custom Control - The Basics

( Uchimata) — Tue, 06 Jan 2009 10:58:54 +0300

I can't say thanks enough for you Man! Thank you so much! I've stuck into the generic.xaml problem for a couple of everlasting days. I've redone everything from the scratch several times, but I've not realized till now (thanks for your article) that a "/themes/generic.xaml" structure is a requirement, and I always created my own conventions. What a silly I am. So thank you Emil for this clear, unambiguous and great article!

RE: Creating a Silverlight Custom Control - The Basics

( Chandima) — Wed, 05 Nov 2008 13:00:34 +0300

This article is fantastic. I was searching internet for days and looking for such an article. I even read Silverlight Tutorials in Microsoft website but they were too complicated and I didn't understand what they were saying. This article is written to the point and thank you so much for making it easy.

RE: Creating a Silverlight Custom Control - The Basics

( emil) — Thu, 23 Oct 2008 03:32:28 +0300

Hi, I'm not sure what exactly you are trying to do.

1: public static readonly DependencyProperty TextProperty = DependencyProperty.Register(

   2:             "Text",

   3:             typeof( string ),

   4:             typeof( LinkLabel ),

   5:             new PropertyMetadata( new PropertyChangedCallback( OnTextChanged ) ) );

This is the way you register the DependencyProperty Text. It is correct and should not give you any kind of error during compilation.

RE: Creating a Silverlight Custom Control - The Basics

( Having difficulty) — Wed, 22 Oct 2008 08:45:05 +0300

Hi, I'm getting a compile error on this line in the customer class:

public static readonly DependencyProperty TextProperty = DependencyProperty.Register(

It says it is looking for a delegate. Am I missing something or did I forget a step? Thanks!

RE: Creating a Silverlight Custom Control - The Basics

( Fleckney) — Thu, 16 Oct 2008 01:32:38 +0300

Thanks for getting me started on SilverLight Custom Controls, it is a great article. I would like to thank Sad for confirming that devotees of Open Source are short sighted bigots.

RE: Creating a Silverlight Custom Control - The Basics

( emil) — Sun, 03 Aug 2008 22:52:20 +0300

Geoffrey,

Here are two more articles on creating custom controls:

Custom ContentControl using VisualStateManager

and

How to inherit from ItemsControl and create a UniformGrid with containers

RE: Creating a Silverlight Custom Control - The Basics

( Geoffrey Swenson) — Thu, 31 Jul 2008 16:08:31 +0300

Yes very helpful. Any tips of taking this further?

RE: Creating a Silverlight Custom Control - The Basics

( Richard Fencel) — Tue, 22 Jul 2008 17:15:08 +0300

Unbelievably simple great "hello world" article. Saved me tons of head scratching and therapy expense.

RE: Creating a Silverlight Custom Control - The Basics

( Chris) — Fri, 04 Jul 2008 00:36:55 +0300

Thanks for the article! it's great.

To Sad,

This is not a good place for you to whine around. You should stick with your open standards may be.

RE: Creating a Silverlight Custom Control - The Basics

( Dejan) — Tue, 17 Jun 2008 00:42:10 +0300

To the author of the article: Thank you for a very informative tutorial.

To the writer of the comment above: This was a technical article. Your comments have completely missed the point. Nobody really cares about your lamenting.

RE: Creating a Silverlight Custom Control - The Basics

( Sad) — Mon, 16 Jun 2008 18:12:40 +0300

So if Silverlight is so cool in regards to creating LinkButtons (or LinkLabels), why not re-create this website with XAML instead of HTML? Ohh yeah, that's right; because it's ActiveX technology, instable doesn't get indexed by search engines which means it won't attract visitors from Google and generally not suitable for creating web-stuff...

Market Silverlight as what it is and not what you're hoping it to be. Flash 2.0, JavaApplets 2.0 or even ActiveX 2.0. Then again, if you did then developers won't really bother to invest in it then I guess ;)

Though I think this will be its curse anyway...

You guys are big, but you're NOT big enough (at least not now) to combat the _ENTIRE_ web alone. How about building on Open Standards instead of continuing de-commoditizing Open Web standards and protocols (ref; Halloween)

Maybe you'd get to at least fade out with PRIDE and people remembering you for what you did which actually was GOOD which was putting a computer in front of (almost) every human on the planet instead of what you're risking now which is that history will remember you as the guys who consistantly refused to fade away without trying to drag the entire world with them...

Sad... :(

Every single waken analyst with more than two intact braincells knows that Silverlight will _NOT_ prevail, you guys really should get some better advice... :(

You guys have so much power and so much money, imagine how much GOOD that could do in regards to innovation. Instead you're consistantly choosing to harm innovation... :(

And you won't even succeed...

At the end of the day it'll all end up as money being poured into a bottomless hole...

Sad! :(