Microsoft released ASP.NET 3.5 on November 19, 2007. Along with it, was released Visual Studio 2008. ASP.NET 3.5 uses the same engine as that of ASP.NET 2.0, with some extra features added to it.
New Features in ASP.Net 3.5
ASP.NET AJAX
In ASP.NET 2.0, ASP.NET AJAX was used as an extension to it. You need to download the extensions and install it. However in ASP.NET 3.5, ASP.NET AJAX is integrated into the .NET Framework, thereby making the process of building cool user interfaces easier and intuitive.
New Controls in ASP.Net 3.5
The ListView and DataPager are new controls added along with a new datasource control called the LinqDataSource.
ListView
The ListView control is quiet flexible and contains features of the Gridview, Datagrid, Repeater and similar list controls available in ASP.NET 2.0.
It provides the ability to insert, delete, page (using Data Pager), sort and edit data.
However one feature of the ListView control that stands apart, is that it gives you a great amount of flexibility over the markup generated. So you have a complete control on how the data is to be displayed. You can now render your data without using the
tag. You also get a rich set of templates with the ListView control.
DataPager
DataPager provides paging support to the ListView control. The best advantage is that you need not have to keep it ‘tied’ with the control on which the paging is being done. You can keep it anywhere on the page.
DataPager gives you a consistent way of paging with the controls that support it. Currently only ListView supports it as it implements the IPageableItemContainer. However support is likely to be added to other List controls as well.
LINQ
LINQ (Language Integrated Query) adds native data querying capability to C# and VB.NET along with the compiler and Intellisense support. LINQ is a component of .NET 3.5.
LINQ defines operators that allow you to code your query in a consistent manner over databases, objects and XML. The ASP.NET LinqDataSource control allows you to use LINQ to filter, order and group data before binding to the List controls.
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ASP.NET Merge Tool
ASP.NET 3.5 includes a new merge tool (aspnet_merge.exe). This tool lets you combine and manage assemblies created by aspnet_compiler.exe. This tool was available earlier as an add-on.
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