Description : Can you store multiple data types in System.Array?
Last Answer : No.
Description : What’s the difference between the System.Array.CopyTo() and System.Array.Clone()?
Last Answer : The first one performs a deep copy of the array, the second one is shallow.
Last Answer : The Clone() method returns a new array (a shallow copy) object containing all the elements in the original array. The CopyTo() method copies the elements into another existing array. Both perform a ... create a new instance of each element's object, resulting in a different, yet identacle object.
Description : How can you sort the elements of the array in descending order?
Last Answer : By calling Sort() and then Reverse() methods.
Description : Write some code to implement a jagged array.
Last Answer : // Declare the array of two elements: int[][] myArray = new int[2][]; // Initialize the elements: myArray[0] = new int[5] {1,3,5,7,9}; myArray[1] = new int[4] {2,4,6,8};
Description : Write some code to implement a multidimensional array.
Last Answer : int[,] b = {{0, 1}, {2, 3}, {4, 5}, {6, 7}, {8, 9}};
Description : Does the size of an array need to be defined at compile time.
Last Answer : No
Description : Can you resize an array at runtime?
Description : What is array rank?
Last Answer : The dimension of the array.
Description : What is the default index of an array?
Last Answer : 0
Description : Write some code that declares an array on ints, assigns the values: 0,1,2,5,7,8,11 to that array and use a foreach to do something with those values.
Last Answer : int x = 0, y = 0; int[] arr = new int [] {0,1,2}; foreach (int i in arr) { if (i%2 == 0) x++; else y++; }
Description : Define what is the difference between Array and LinkedList?
Last Answer : The array is a simple sequence of numbers which are not concerned about each other’s positions. they are independent of each other’s positions. adding, removing or modifying any array element is very easy. Compared to arrays, a linked list is a complicated sequence of numbers.
Description : Define what is the difference between Array and ArrayList?
Last Answer : An array is a collection of the same type. The size of the array is fixed in its declaration. A linked list is similar to an array but it doesn’t have a limited size.
Description : List out the differences between Array and ArrayList in C#?
Last Answer : Array stores the values or elements of the same data type but ArrayList stores values of different data types. Arrays will use the fixed length but ArrayList does not use fixed length like an array.
Description : Can multiple catch blocks be executed?
Last Answer : No, once the proper catch code fires off, the control is transferred to the finally block (if there are any), and then whatever follows the finally block.
Description : What happens if you inherit multiple interfaces and they have conflicting method names?
Last Answer : It’s up to you to implement the method inside your own class, so implementation is left entirely up to you. This might cause a problem on a higher-level scale if similarly named methods from different interfaces expect different data, but as far as compiler cares you’re okay. To Do: Investigate
Description : Can you inherit multiple interfaces?
Last Answer : Yes. .NET does support multiple interfaces.
Description : Can multiple catch blocks be executed for a single try statement?
Last Answer : No. Once the proper catch block processed, control is transferred to the finally block (if there are any).
Description : Does C# support multiple-inheritance?
Description : Can you inherit from multiple interfaces?
Last Answer : Yes
Description : Does C# supports multiple inheritance?
Description : Can you increment multiple variables in a for loop control?
Last Answer : Yes – e.g. for (int i = 1; j = 2;i
Description : Can C# have multiple catch blocks?
Last Answer : Yes, why not.
Description : Does C# support multiple inheritance?
Last Answer : No, use interfaces instead.
Description : Can a class or a struct have multiple constructors?
Last Answer : Yes, a class or a struct can have multiple constructors. Constructors in C# can be overloaded.
Description : Can we execute multiple catch blocks in C#?
Last Answer : No. Once an exception has occurred it executes specific exception catch block and the control comes out.
Description : Define what are the two data types available in C#?
Last Answer : Value type Reference type
Description : Explain how to retrieve information from the configuration file at run time. How would you store information in the configuration file at design time?
Last Answer : You must first create an instance of AppSettingsReader to read the configuration file. You can then call the GetValue method to read values represented in the configuration file. To add configuration ... used to retrieve the entry. The value can be changed between executions of the application.
Description : Which processor has a single instruction multiple data stream organization that manipulates the common instruction by means of multiple functional units. a. Attached array processor b. SIMD array processor c. Both d. None
Last Answer : b. SIMD array processor
Description : Explain how to convert data in legacy code page formats to the Unicode format.
Last Answer : You can use the Encoding.Convert method to convert data between encoding types. This method requires instances of both encoding types and an array of bytes that represents the data to be converted. ... GetBytes method and can convert an array of bytes back to chars with the Encoding.GetChars method.
Description : Describe how to use a DataView to filter or sort data.
Last Answer : You can apply sort criteria to a DataView by setting the Sort property to the name of a column or columns to be sorted by. The data represented in a DataView object can be filtered by setting the RowFilter property to a valid filter expression.
Description : How can you manage data currency on a form with several bound controls?
Last Answer : Every data source on a form has an associated CurrencyManager object that keeps that of the current record with respect to bound controls. For convenience, all of the CurrencyManager objects ... property. The Position of the CurrencyManager can be changed, allowing navigation through the records.
Description : Briefly contrast connected and disconnected data access in ADO.NET.
Last Answer : In ADO.NET, connected data access is available through the DataReader, which is a lightweight class designed to provide very fast and efficient data access. It is severely limited, however, in ... to update the database and keeping the connection open just long enough to execute those commands.
Description : What are the major components of a Data Provider, and what function does each fulfill?
Last Answer : An ADO.NET Data Provider is a suite of components designed to facilitate data access. Every Data Provider minimally includes a Connection object that provides the actual connection to the data ... only, read-only access to a database, and a DataAdapter that facilitates disconnected data access.
Description : Explain how properties differ from fields. Why would you expose public data through properties instead of fields?
Last Answer : Properties allow validation code to execute when values are accessed or changed. This allows you to impose some measure of control over when and how values are read or changed. Fields cannot perform validation when being read or set.
Description : What are advantages and disadvantages of Microsoft-provided data provider classes in ADO.NET?
Last Answer : SQLServer.NET data provider is high-speed and robust, but requires SQL Server license purchased from Microsoft. OLE-DB.NET is universal for accessing other sources, like Oracle, DB2, Microsoft Access and Informix. ... on top of the OLE layer, so it's not as fastest and efficient as SqlServer.NET.
Description : Define what is meant by data encapsulation?
Last Answer : Data encapsulation also referred to as data hiding, is the mechanism whereby the implementation details of a class are kept hidden from the user. The user can only perform a restricted set of operations on the hidden members of the class by executing special functions called methods.
Description : Briefly describe the three types of user-developed controls and how they differ.
Last Answer : The three types of user-developed controls are inherited controls, user controls, and custom controls. An inherited control derives from a standard Windows Forms control and inherits the ... inherit only generic control functionality. All specific functionality must be implemented by the developer.
Description : Briefly explain the difference between Public (public), Friend (internal), and Private (private) access levels as they apply to user-defined types and members.
Last Answer : In user-defined types, Public (public) classes can be instantiated by any element of the application. Friend (internal) classes can be instantiated only by members of the same assembly, and Private ( ... the same assembly, and Private (private) members can be accessed only from within the type.
Description : Briefly describe what members are, and list the four types of members.
Last Answer : Members are the parts of a class or a structure that hold data or implement functionality. The primary member types are fields, properties, methods, and events.
Description : Are value types are slower to pass as method parameters?
Description : Can nested classes use any of the 5 types of accessibility?