Control Silverlight Upload with Javascript

[Justin McMillen]

Hi,
  Is it possible to control the Silverlight file upload control with javascript?  I would like to be able to start the upload from javascript.  I also need to know when the control has finished uploading the files. 

Thanks.

[Miroslav]

Hello Justin,

In Silverlight you can mark a class as ScriptableType and its members as ScriptableMember to indicate that it can be used from JavaScript. The RadUpload is marked with these attributes as well. The only thing you have to do is register an instance of the RadUpload with the HtmlPage.  The RadUpload should work as any other scriptable class. If you need, you can find many tutorials about Silverlight / JavaScript interop, here is one:

http://pietschsoft.com/post/2008/06/Silverlight-and-JavaScript-Interop-Basics.aspx

You can start the upload from JavaScript but the user needs to choose the files first as he would normally. There are two events that are raised on completion: FileUploaded and UploadFinished.

Greetings,
Miroslav
the Telerik team

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[Justin McMillen]

Hi Miroslav,

This works well.  Thanks.  I do have one other question, though.  Is it possible to hide the "Upload" button on the silverlight control?

[Valentin.Stoychev]

Hello Justin McMillen,

You need to edit the style of the Upload and modify its control template.

Kind regards,
Valentin.Stoychev
the Telerik team

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[Justin McMillen]

Thanks. 

I have downloaded the source code for the silverlight controls.  Where can I find the default style for the upload control's control template?

[Dimitrina]

Hello Justin McMillen,

You can see the template of RadUpload control, when you edit the control in  "Blend". For more information you can visit this link
http://www.telerik.com/help/silverlight/radcontrols-for-silverlight-expression-blend-support.html 

Please find your attached example.
If you have any question please do not hesitate to ask.

I hope this will help you.

All the best,
Dimitrina
the Telerik team

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[Justin McMillen]

This is a great help.

Thanks.