For non-generic data sources such as ArrayList , the range variable must be explicitly typed.
Things to keep in mind As mentioned above chaining enumerators have the advantage that in the end you only iterate through your base collection only once and each element will go through the whole chain, one by one. Net that extends these languages with query operators and some other features that make it possible to integrate queries in the languages.
As I said, every time I type that... So when you call MoveNext on the wrapper it will in turn call MoveNext on the input enumerator to get one element from the input and returns that one as Current.
Submit feedback. Each item in the collection will itself be a collection of the SalesOrder objects that share a common value. Some of these providers were mentioned in Channel9 video [ 4 ], so in the future you should be able to use this extension with entities in future version of ADO. ID - Just an identifier MyObject.
Behind that operator you actually specify the body of your method. Jan 8 '10 at 15: In a LINQ query, the first step is to specify the data source.
In this code I'm taking advantage of a feature of both languages and letting names of the properties on my anonymous object default to the names of the properties on my cust and mo range variables.
Diagnostics; using System. You can't, in the Select clause, use the range variable from the Join clause in my example, that's the so variable.
The way it trends is the same. This is done behind the scene by the wrapper created by ToExpandable in the previous code, but you can do it directly as you can see in the following example: Standard Query Operators Overview C.
Select The Select method is a bit different as it can have different input and output types. To use expression you have to use Invoke extension method that is declared in the ExpressionExtensions class EeekSoft. Short addition to lambda expressions closures! Count, em.