Fingent DOT NET Developer Interview Questions, Process, and Tips

The ref and out keywords are used in C# to pass arguments by reference instead of by value.

• The ref keyword is used to pass a variable by reference, allowing the called method to modify the value of the variable.

• The out keyword is similar to ref, but it is used when the called method needs to assign a value to the variable being passed.

• The ref keyword requires the variable to be initialized before passing it to the meth...read more

Overloading is having multiple methods with the same name but different parameters. Overriding is implementing a method in a derived class with the same name and signature as in the base class.

• Overloading allows a class to have multiple methods with the same name but different parameters.

• Overriding allows a derived class to provide a different implementation of a method that is already defined in the base class.

• Overloa...read more

SQL join queries are used to combine rows from two or more tables based on a related column between them.

• Join queries are used to retrieve data from multiple tables in a single query.

• Common types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

• Join conditions are specified using the ON keyword, which defines the column(s) to join on.

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = ta

ADO .NET database calling steps involve establishing a connection, creating a command object, executing the command, and handling the results.

• Establish a connection to the database using a connection string

• Create a command object to specify the SQL query or stored procedure to be executed

• Execute the command to retrieve or modify data in the database

• Handle the results by reading data from a DataReader or updating data u