This article describes the following aspects of Microsoft Visual Studio 2008 Service Pack 1 (SP1) Beta for the Microsoft .NET Framework 3.5:

•	Known issues in this service pack and how to work around those issues
•	Issues that may occur when you uninstall this service pack and how to roll back to the release version of Visual Studio 2008
•	Hotfixes that are included in this service pack
•	Features and functionalities that are added, changed, or improved
•	Fixed issues for which hotfixes were not released

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Known issues in this service pack and how to work around those issues

•	For multiple editions of Visual Studio 2008, Microsoft supports only those scenarios in which all editions are at the same service pack level. If there are multiple language versions or multiple editions of Visual Studio 2008 on a computer, all must be at the same level to be supported by Microsoft. For example, all versions or editions must be at the RTM level or at the SP1 level.
•	You cannot install this service pack if you have a beta version of Silverlight installed on your computer.

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

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Issues that may occur when you uninstall this service pack and how to roll back to the release version of Visual Studio 2008

For information about issues that may occur when you uninstall this service pack and about how to roll back to the release version of Visual Studio 2008, see the "Removal issues for all platforms" section of the following article in the Microsoft Knowledge Base:

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Hotfixes that are included in this service pack

No hotfixes are included in this service pack.

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Features and functionalities that are added, changed, or improved

New features and functionalities

•	Dynamic Data This feature enables the automatic generation of user interface scaffolding based on existing database schemas and on Entity Framework object models.
•	URL Routing This feature enables you to route control from incoming URLs to arbitrary managed types based on pattern matching. The feature also allows for the generation of URLs based on the same patterns. The Dynamic Data feature and the out-of-band (OOB) ASP.NET Model-View-Controller (MVC) release use the URL Routing feature.
•	New AJAX functionalities in the following areas: • History management • Integration with the forward button and with the back button in a browser. • Script combining to enable a more efficient delivery of Javascript.
•	Updated data controls to support new data types in Microsoft SQL Server 2008.

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Fixed issues for which hotfixes were not released

Connect ID	Description
310331	When you insert multiple user controls that contain an XmlDataSource object in a Web page, the user controls display incorrect data.
316556	Visual Studio does not display available resources in alphabetical order.
305978	The JavaScriptSerializer class does not support enumerations that are based on the byte data type and the short data type.
310161	The AssociatedHeaderCellID property of the TableCell control does not generate the Headers attribute by using a space-separated list.
298172	The PageRequestManager.RegisterAsyncPostBackControl(this) method does not allow for postbacks to the Page type.
323228	An exception is thrown when you run the RuleSettingsCollection.Contains method.
312060	The Page.IsPostBackEventControlRegistered property and the Page.AutoPostBackControl property are not public.
308579	The RequiredFieldValidator control that is tied to a RadioButtonList control does not work if you set the SetFocusOnError property to true.
318215	A dynamic Web user control that contains a GridView control may generate an unexpected exception.
310039	The HyperLink control does not correctly process child controls.
308352	The HttpRuntime.ProcessRequest method does not work in the Integrated Pipeline Mode of Internet Information Services 7.
302939	The PasswordRecovery control sends incorrect passwords when the Regex.Replace method is used together with escape sequences.
236602	The Binary value is added to the TypeCode enumeration for the SqlDataSource objects to correctly handle the Image data type and the Varbinary data type.
307978	The VirtualPathProvider object does not correctly display compilation errors.
310852	An OutOfMemoryException exception occurs in the GridView control when the GridView control is connected to a paged data source that has billions of items.
311000	A NullReferenceException exception is raised when you use the page.ParseControl method to create a control that contains references to local resources.
323893	An error occurs when you enable trace output in an .aspx page.
306297	The SqlMembershipProvider class does not update the LastActivityDate column of the aspnet_Users table.
293199	After you set the Session.Timeout value in an ASP.Net Web site that uses SQL Server sessions, the Expires value increases by the previous Session.Timeout value.
295541	A deadlock occurs in ASP.NET if the Response.Redirect method is called in an async task that is started by using the Page.ExecuteRegisteredAsyncTasks method.
311658	The FormView control intercepts all commands that pass it even if the FormView control does not process these commands.
313737	When you change the SQL statement for a GridView control, the Datasource control is not refreshed, and no result is displayed.
298850	The TotalRecordCount property is added to the selected event of the LinqDataSouce object.
273696	ASP.NET does not support the URL rewriting option for error pages.
329314	When you update the first item in the ListView control, an NullReferenceException exception occurs.
333303	The MicrosoftAjaxWebForms.js file incorrectly checks the Element.tagName property.
315348	The pageBaseType attribute of the pages configuration element in the Web.config file does not take effect.

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For more information about Visual Studio 2008 SP1 Beta, click the following article number to view the article in the Microsoft Knowledge Base:

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