I programmed a Virtual Keyboard (On Screen Keyboard) as a Silverlight Web Application, now I want to use this Keyboard in an other Silverlight Application (call the Keyboard when clicking a Textbox). I thought I could create a .dll and use this in my other Application.
So is it possible to create a .dll File from a Silverlight Web Application?
Thank you for reading,
Knut Hansen
You simply need to convert it into a Silverlight Class Library. There are some things to look out for, but it isn't too hard.
It is one of the options when you create a new project in Visual Studio.
See Microsoft's documentation for more info:
http://msdn.microsoft.com/en-us/library/cc838164(v=vs.95).aspx#silverlight_class_library_project
also you can think of a web service, in this way your application can be used by anyone else, of course you can specify users of your app. I think web services are more recent and using them is more future-oriented, give it a go!
Related
Does anyone know of a way to simulate microsoft word using silverlight in a web browser? I am not looking for a commercial application but rather an open source solution. I do not need the complete functionality of word. Something simple that will display the text of a document will do for the first version. Also, silverlight cannot be running in out-of-browser mode and I cannot use a WCF service.
Thanks for your time!
You can start with the Silverlight Text Editor in Microsoft Sample.
I would like to develop a web conferencing system (or web classroom) as a graduation project using Silverlight similar to
iVocalize
which is a java applete .
I don't know if what is possible for a java applete to perform on the PC is also possible for Silverlight, or is SL more restricted.
There are two functionalities (which are related i guess) that iVocalize provides which i would also like to include in my SL application, which are:
A participant may broadcast a live video stream of the desktop to other participants so that they will be able to follow all activities performed on the computer.
A participant may take a snapshot of the desktop
If the previous functionalities are not possible in SL than do you think that WPF may be used instead?
Thank you vey much.
Actually, you can use Silverlight 4 Web cam features.
With Silverlight 4, you can develop full-trust Silverlight application that can capture the snapshot of user desktop.
Using Silverlight it is possible.. Have a look at this open source silverlight project. Its has desktop sharing as one of the module
http://silverlightvideochat.codeplex.com/
How do I go about hosting a silverlight 3.0 application inside of a wpf application in which I can pass data between the two? It needs to run without internet connectivity.
I have a project I'm working on to do that. It's very experimental right now...Hell I really haven't even announced it yet.
http://silverlightviewport.codeplex.com
-Jer
There is no known control that can do this seamlessly out there as yet. To do something like this, you will need to host a web control and use javascript to communicate with the host for interop. Which by the way is not at all recommended.
Can Silverlight communicate with a MIDI instrument connected to the machine running the Silverlight application? In- or out-browser.
It appears that this is not possible in Silverlight. To communicate with a MIDI device, you would have to PInvoke methods in winmm.dll, and this (apparently) cannot be done in Silverlight. See:
http://forums.silverlight.net/forums/t/123673.aspx
This could be done easily in a WPF or WinForms application. It could also be done in a browser with XBAP, although you would need elevated permissions to access the winmm API, which would require a certificate. You can also still make ActiveX controls with .Net, but I think you would still need a certificate for this to get the proper permissions (although it might work with just a scary security confirmation dialog).
It's not possible to use .NET code directly in Silverlight because Silverlight has a different core.
All .NET classes that you want to reference in Silverlight need to be recompiled for Silverlight.
It's also not possible to access the underlying hardware directly, so i'm afraid you're stuck with a full-trust XBAP(you need to sign your app and the user will get an popup asking for permission). XBAP gives you all the .NET capabilities while running in the browser. XBAP will run on firefox/internet explorer on any >xp machine with .net 3.0 installed.
Hope this helps.
Silverlight 3 has an extensible multimedia pipeline for audio and video. You can procedurally create your own audio and play it. To implement what you want, you would have to write your own midi synthesizer.
I was wondering if Silverlight 3 can be used to create line of business applications where I can use file import/export facilities, read an xls file and open Excel, use a report tool like Crsytal Reports or Reporting Services or.. is WPF needed?
I am new to Silverlight and WPF and want to decide if I can skip learning WPF. I know Silverlight is a subset of WPF but I just want to concentrate in one of the two.
Although Silverlight is sand-boxed and it isn't possible to open and save files to the local file system direcly, it is possible to get a stream to a local file.
There are the OpenFileDialog and SaveFileDialog classes. These classes make it possible to let the user select a file or location. They return only a stream to that file and do not give any information about the filesystem. This way it's possible to import and export to excel for example.
This example should be enough to get you going.
update:
in the meantime I did a small SilverBullet(tm) on the subject on my blog at http://www.timmykokke.com/
Silverlight 3 has quite limited file system access. Even though you can save a local file you cannot open it using the associated application directly from Silverlight. If you want the user to export and open an Excel file from a button click in Silverlight you will have to consider alternatives:
You can open a new browser window pointed at a URL on your webserver that generates an Excel file. If the server sets the correct content type and the client is properly configured the user will be prompted to open the file in Excel. This effectively moves your export code to the server.
You can embed an ActiveX control on the same page as the Silverlight control and using the browser object you can operate this ActiveX control from Silverlight. Given enough rights by the user the ActiveX control can do anything to the local computer including automating Excel.
No, but apparently SL4 does!
Local file access - Silverlight 4
No, but unlike Jimmy my guess is that it won't happen in a future.
If you need local system there are other technologies to use (e.g. local windows service which can communicate with silverlight app).
The reason why silverlight won't have local access in the nearest future is that Microsoft learned it's lesson with ActiveX.
No, as far as I know Silverlight 3 is still as sand-boxed as ever. This is becoming a bottleneck for developers though, so I'm sure it will be addressed in upcoming versions of Silverlight.
From what I know, SL3 doenst support to use COM application such as Word, Excel, etc.. but SL4 does. If your application is just gonna be used internally, WPF will be the best candidate for your project, but if you want it to be used from the external clients as well, then I reckon you can use SL4, then use OUT OF BROWSER, then it'll work really similar with WPF. Plus with SL4, you're able to interact with Excel, Word, etc... to do lots of things.
Cheers,
Brandon