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C# MCQs

Which of the following how you can use retrieve a single row with LINQ?

Public User GetUser (string userName){ DBNameDataContext myDB = new DBNameDataContext ( ) ; User user = myDB. User. Singles ( u, u.UserName => userName ); Return user; }

Public User GetUser (string userName){ DBNameDataContext myDB = new DBNameDataContext ( ) ; User user = myDB. Users. SingleObject ( u, u.UserName => userName ); Return user; }

Public User GetUser (string userName){ DBNameDataContext myDB = new DBNameDataContext ( ) ; User user = myDB. Users. Single ( u, u.UserName => userName ); Return user; }

Public User GetUser (string userName){ DBNameDataContext myDB = new DBNameDataContext ( ) ; User user => myDB. Users. Single ( u, u.UserName = userName ); Return user; }

Answer

Correct Answer: Public User GetUser (string userName){ DBNameDataContext myDB = new DBNameDataContext ( ) ; User user = myDB. Users. Single ( u, u.UserName => userName ); Return user; }

Explanation:

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