how can we create a SL custom control. we cant derive from frameworkelement it has an internal Ctor. also if its possible we can not override the OnRender method. I know its not possible now but I need to know if this will gonna be supported in future or not.

also is there any workaaround to create my own custom control. I need to do an Image control with extra properties.

 public class ImageControl : Control

{

}

sladapter
Software Engineer
Aprimo, Inc

Please remember to mark the replies as answers if they answered your question

and then what. I need to override the OnRender method. I need to draw Frames arround the image. also I need to change the behaviour that Image control has.

Please check this quickstart to know how to create a Silverlight 2 custom control: http://silverlight.net/Quickstarts/BuildUi/CustomControl.aspx

http://www.identitymine.com/

Sam Anderson:

and then what. I need to override the OnRender method. I need to draw Frames arround the image. also I need to change the behaviour that Image control has.

There is no OnRender method in silverlight control you can override. Take a look at the link Jim pointed you should be able to create a custom control in silverlight.

sladapter
Software Engineer
Aprimo, Inc

Please remember to mark the replies as answers if they answered your question

 I've made a custom control based on Button and am getting this error at runtime:

 Additional information: AG_E_PARSER_UNKNOWN_TYPE

 If I mouse over the control in xaml I'm seeing:

 Type 'MyButton' is not usable as an object element because it is not public or does not define a public parameterless constructor or a type converter.   

So I found this post and the CustomControl tutorial says it's now obsolete. I'm assuming that's just the tutorial, not custom controls. Is there another tutorial around that will show me what I've done wrong? I've done this before. I'm sure its something simple?

Any ideas?

Stephen

Here is another one on how to create CustomControl:

 http://www.codeproject.com/KB/silverlight/mediabutton.aspx

sladapter
Software Engineer
Aprimo, Inc

Please remember to mark the replies as answers if they answered your question

sladapter:

Here is another one on how to create CustomControl:

 http://www.codeproject.com/KB/silverlight/mediabutton.aspx

 Thanks for that. I did find that one in my searching, but it didn't help me other than show me that I was doing everything right. Except for one thing. My constructor did not have the public keyword in front of it. 

Took me ages to spot the error! The class was quite happy but my xaml couldn't get to it. I assumed the default was public but I guess it must be something else? protected or private maybe?

cheers,

Stephen

Lyynx:

I assumed the default was public but I guess it must be something else? protected or private maybe?

I think it is internal.

Jim (http://jimmangaly.blogspot.com/)

Please MARK the replies as answers if they answered your question

http://www.identitymine.com/

 if you only want to create a control , that can be used as dll, then create a silverlight project with add a user control to it. delete page.xaml

from the bin folder we can get its dll and use it in any other project.

Sachin Mukhija

Software Engineer 

Sachin Mukhija
"Please Mark as answer if answer is correct".

There are no plans to add an OnRender method for this version. There will be no low-level drawing APIs. Anything you want to see on the screen must be done by composition, i.e. if you want a border around a custom Control, then you need to have a Border element (or a Rectangle) in the control's visuals.

Dave Relyea [MSFT]
http://blogs.msdn.com/devdave

Here is another great link to creating a custom control:


http://msdn.microsoft.com/en-us/magazine/cc721611.aspx

 Hi

sanjay_sk16

you can download and run the demo from here

http://www.esnips.com/web/CustomControl

Mr. Sanjay S. Kadam
(Jr. Software Developer)
[AksTech Solutions Pvt Ltd.]

Mark it as answer if its helpful for you.

 You can check out this QuickStart:
How to create a Silverlight custom control

It is one in a series of Silverlight QuickStarts can be found on www.visualwebgui.com/silverlight
 

 *** Clarification Point ***

 Whenever a custom silverlight control is to be added to an ASPX page, that control needs to be implemented as a page.xaml file and included in the XAP file, then each XAP file that houses each control needs to be  added explicitly in the silverlight tag. 

i.e.

MyCustomControl is implemented in Page1.XAML which generates MyCustomControl.XAP file

MyOtherControl is implemented in Page1.XAML which generates MyOtherControl.XAP file.

To impelement in the ASPX mark up you would have

 <asp:ScriptManager ID="MyManager" runat="server"/>

<asp:Silverlight id = "MyControl" runat="server" Source = "~/ClientBin/MyCustomControl.XAP" />

<asp:Silverlight id = "MyOtherControl" runat="server" Source = "~/ClientBin/MyOtherControl.XAP"/>

There is no way to implement a library of associated controls in a .xap file and choose which control to include in an ASPX page correct, one XAP file per Control?  

Secondly, if there are custom events on the control there is no way to capture them on the ASPX.cs file correct? Is the only way these can be captured via JS?

I know if I had a pure Silveright application this would be feasible, but complete migration vs. cherry picking ideal implementation points and gradually migrating over feels like a much more feasable transition for both users and stake holders.  

Thanks.