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What is the DataContext class and how is it related to LINQ?
After you add a LINQ to SQL Classes item to a project and open the O/R Designer, the empty design surface shows an empty DataContext class ready to be configured. The DataContext class is a LINQ to SQL class that acts as a conduit among a SQL Server database and the LINQ to SQL entity classes mapped to that database. This class having the connection string information and the methods for connecting to a database and manipulating the data in the database. It is configured with connection information given by the first item that is dragged onto the design surface.
Passport authentication A centralized service given by Microsoft, offers a single logon point for clients. Unauthenticated users are redirected to the Passport site
What is the difference between dynamic and var data types? The difference among the var and dynamic data types is that the var data type is strongly type checked at the compile
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Update present website backend (asp.NET) as well as build Rest API to expose data I will soon build an HTML5 cross-platform mobile app. I previously have a website with a backen
Explain ExpandoObject and DynamicObject classes. The ExpandoObject class refers to a class whose members can be explicitly added and removed at runtime. In other words, the Exp
Question: (a) Explain the function of the main .NET data objects: Connection, Command, DataReader, DataAdapter, DataSet, DataTableCollection, and DataView. (b) Describe h
How can you raise custom errors from stored procedure? The RAISERROR statements are used to produce an ad hoc error message or to retrieve acustom message which is stored in t
Explain keywords with example. Keywords are those words that are reserved to be used for an exact task. These words cannot be used as identifiers. You cannot use a keyword to
How can you identify whether or not any changes are made to the DataSet object as it was last loaded? The DataSet object provides the following two methods to track down the ch
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