HOTSPOT You are implementing a library method that accepts a character parameter and returns a string. If the lookup succeeds, the method must return the corresponding string value. If the lookup fails, the method must return the value "invalid choice."…

You use the Task.Run() method to launch a long-running data processing operation. The data processing operation often fails in times of heavy network congestion. If the data processing operation fails, a second operation must clean up any results of the…

You are developing an application by using C#. The application includes an object that performs a long running process. You need to ensure that the garbage collector does not release the object’s resources until the process completes. Which garbage collector…

You are creating a class named Employee. The class exposes a string property named EmployeeType. The following code segment defines the Employee class. (Line numbers are included for reference only.) The EmployeeType property value must be accessed and modified only…

DRAG DROP You are developing a class named ExtensionMethods. You need to ensure that the ExtensionMethods class implements the IsEmail() method on string objects. How should you complete the relevant code? (To answer, drag the appropriate code segments to the…

You are developing an application. The application includes classes named Employee and Person and an interface named IPerson. The Employee class must meet the following requirements: • It must either inherit from the Person class or implement the IPerson interface.…

You are developing an application that will convert data into multiple output formats. The application includes the following code. (Line numbers are included for reference only.) You are developing a code segment that will produce tab-delimited output. All output routines…

DRAG DROP An application serializes and deserializes XML from streams. The XML streams are in the following format: The application reads the XML streams by using a DataContractSerializer object that is declared by the following code segment: var ser =…

You are developing an application. The application converts a Location object to a string by using a method named WriteObject. The WriteObject() method accepts two parameters, a Location object and an XmlObjectSerializer object. The application includes the following code. (Line…

An application includes a class named Person. The Person class includes a method named GetData. You need to ensure that the GetData() from the Person class. Which access modifier should you use for the GetData() method? A. Internal B. Protected…