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Sys.Preview is undefined

Hi, I am trying to use the code posted in the following article: http://aspalliance.com/1300_Custom_Client_Side_Drag_and_Drop_Behavior_in_ASPNET_AJAX However I keep getting the following error: Sys.Preview is undefined I already have the Microsoft.Web.Preview.dll in my bin folder. Any ideas?

Posted to ASP.NET AJAX / Javascript General Questions (Forum) by PatrickSmith on 10-02-2008
Callback Method Errors from AJAX Web Services

As I mentioned before, AJAX supports calling web services from the client using an XmlHttpRequest object. But sometimes, things don't go as expected. If you make the call, an error may occur in the web service, which you'd get an error prompt. However, there's one other aspect to this. Sometimes...

Posted to Brian Mains Blog (Weblog) by bmains on 09-30-2008
AJAX: Pushing down LINQ objects via Web Services

If you use web services to stream data to the client via the ASP.NET AJAX framework, you may experience challenges when you use LINQ to SQL or Entities as your data model. This is because LINQ objects retain all of their relationships, which the serialization capabilities have trouble serializing entity...

Posted to Brian Mains Blog (Weblog) by bmains on 09-26-2008
Sys.InvalidOperationException: Cannot serialize non finite numbers

I got the above error when passing data to a web service. On the web service, a field is defined as int?. But when I try to pass a null value, I get the above error because the value is showing up as NaN. So it sees NaN and throws this exception. As an alternative, I'm going to have to use a -1 instead...

Posted to Brian Mains Blog (Weblog) by bmains on 09-25-2008
Username Availability Validator almost ready, the early demo

Few weeks ago Dave started the Advanced ASP.NET AJAX Server Controls book giveaway contest . And yesterday he announced that the control is almost completed, but the contest door is still open. So I thought to grape the bits and start testing it and build a simple sample. [ View Demo ] The sample that...

Posted to Moses on DotNetSlackers (Weblog) by mosessaur on 09-22-2008
Ajax in Visual Studio 2005

Hello. Recently I've learnt about Ajax and it seems interesting to me. It seems also that I should deploy and master some ControlToolkit for proper using of Ajax's capabilities. But I did not find such one for Visual Studio 2005. Although this Toolkit is mentioned here http://www.asp.net/ajax...

Posted to Asp.net Ajax DataControls (Forum) by Slacker08 on 09-18-2008
AJAX Script in VS 2008

JavaScript code overall isn't that difficult to write. It may sometimes be hard to come up with a particular task, but it isn't that hard to write. It's hard to get syntatically correct, even with all of the features VS 2008 has to offer. VS 2008 has a lot of nice features to help prevent...

Posted to Brian Mains Blog (Weblog) by bmains on 09-12-2008
JavaScript Event Handlers

JavaScript Event Handlers don't work the way that you may expect. For instance, if you had a component that defined an event itemCreated. That event could add an event handler through the "add_" method, as such: add_itemCreated You'd add an event handler through the process of something...

Posted to Brian Mains Blog (Weblog) by bmains on 09-10-2008
Master\Detail with CollapsiblePanelExtender and edit detail with HoverMenuExtender using GridView

Last year, Matt posted a cool post about How To: Use the HoverMenuExtender for GridView RowCommands . Last month I got an e-mail from Justin Riggs , he was trying to combine to things. The usage of HoverMenuExtender as described in Matt's post , and the Master\Detail GridView with CollapsiblePanelExtender...

Posted to Moses on DotNetSlackers (Weblog) by mosessaur on 09-08-2008
Re: Improving user experience in ASP.NET AJAX

Check this out http://www.codeproject.com/KB/ajax/AJAX___ASPNET.aspx .

Posted to ASP.NET AJAX / Javascript General Questions (Forum) by RajeshChauhan on 09-05-2008

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Browse by Tags

Sys.Preview is undefined

Callback Method Errors from AJAX Web Services

AJAX: Pushing down LINQ objects via Web Services

Sys.InvalidOperationException: Cannot serialize non finite numbers

Username Availability Validator almost ready, the early demo

Ajax in Visual Studio 2005

AJAX Script in VS 2008

JavaScript Event Handlers

Master\Detail with CollapsiblePanelExtender and edit detail with HoverMenuExtender using GridView

Re: Improving user experience in ASP.NET AJAX