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LINQ Anonymous Type (Anonymous Types)

One of the other new C # and VB features that LINQ can take advantage of is support for LINQ anonymous types. This allows you to easily create and use inline type structures without explicitly declaring the object model, because types can be inferred from data initialization. This is useful when querying "custom configuration (custom shape)" data using LINQ.

For example, consider a scenario where you are working with a database with many properties or a strongly typed collection-but you only care about a few of them. It is more useful to return only the fields you need than to create and process the entire type. Let's create a new "step6.aspx" file to do the above:

Anonymous Type

In our background code file, we will write a LINQ query that uses LINQ anonymous types, as follows:

Using System; using System.Web.UI; using System.Query; public partial class Step6: System.Web.UI.Page {protected void Page_Load (object sender, EventArgs e) {TravelOrganizer travel = new TravelOrganizer (); GridView1.DataSource = from location in travel.PlacesVisited & nbsp; orderby location.City & nbsp; select new {& nbsp; & nbsp;City = location.City, & nbsp; & nbsp;Distance = location.Distance & nbsp;}; GridView1.DataBind ();}}

Notice that instead of returning a "location" object from the select clause as above, we do this by creating a new LINQ anonymous type with City and Distance attributes. The types of these two properties are determined automatically based on the values they are assigned to when they are initialized, one of which is string and the other int.

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