Description : Explain why you might use enums and constants instead of their associated literal values.
Last Answer : Enums and constants make code easier to read and maintain by substituting human-legible tokens for frequently used constant values.
Description : How can you implement a mutable string?
Last Answer : System.Text.StringBuilder
Description : Write some code to implement an indexer.
Last Answer : using System; namespace Console1 { class Class1 { static void Main(string[] args) { MyIndexableClass m = new MyIndexableClass(); Console.WriteLine(m[0]); Console.WriteLine(m[1]); Console.WriteLine(m[2]); Console. ... get { return myData[i]; } set { myData[i] = value; } } } }
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 : Define what Command is used to implement properties in C#?
Last Answer : get & set access modifiers are used to implement properties in c#.
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 is the shortcut key to display the Microsoft PowerPoint shortcut menu? -Technology
Last Answer : (c) Shift + F10 is the shortcut key to display the PowerPoint shortcut menu
Description : Describe an abstract class and explain when one might be useful.
Last Answer : An abstract class is a class that cannot be instantiated but must be inherited. It can contain both implemented methods and abstract methods, which must be implemented in an inheriting class. ... common interface for other methods, and leave more detailed implementation up to the inheriting class.
Description : What are the two return types for main?
Last Answer : void and int
Description : Does an object need to be made to run main?
Last Answer : No
Description : Define what is the main difference between a sub procedure and a function?
Last Answer : Sub procedures do not return a value, while functions do.
Description : Define what is the main use of delegates in C#?
Last Answer : Delegates are mainly used to define call back methods.
Description : Is Obama to the point in his administration where he can finally implement his own policies, instead of constantly cleaning up after Bush?
Last Answer : I think it’s going to be a long time before we’re done cleaning up after Bush’s mess. Really, it’s normal for a president’s policies during his term to have long-lingering effects. In many ways we’re still dealing with Ronald Reagan’s messes.
Description : Message can be sent more securely using DES by a. encrypting plain text by a different randomly selected key for each transmission b. encrypting plain text by a different random key for each ... instead of using hardware d. designing DES with high security and not publicizing algorithm used by it
Last Answer : b. encrypting plain text by a different random key for each message transmission and sending the key to the receiver using a public key system
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 : Explain how to use the PrintPreviewDialog control to display a preview of a printed document before it is printed.
Last Answer : You display a preview of a printed document with the PrintPreviewDialog control by first setting the PrintDocument property of the PrintPreviewDialog instance to the PrintDocument you want to preview, then by calling the PrintPreviewDialog.Show command to display the dialog box.
Description : Explain the difference between Globalization and Localization.
Last Answer : Globalization refers to the application of culture-specific format to existing data. Localization refers to providing new culture-specific resources and retrieving the appropriate resources based on the culture setting.
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 : Explain how to use the HelpProvider component to provide help for UI elements.
Last Answer : You can provide either a HelpString or a help topic for UI elements with the HelpProvider. The HelpProvider provides HelpString, HelpKeyWord, and HelpNavigator properties for each control on the form. If ... particular element is displayed when the element has the focus and the F1 key is pressed.
Description : Explain how to use the Begin and End methods on a Web Service to make an asynchronous method call.
Last Answer : Every public Web method on a Web Service can be called either synchronously or asynchronously. To make an asynchronous call to a Web method, you call the method named Begin, where is the name of ... returned by Begin. This will allow you to retrieve the actual data returned by the Web method.
Description : Briefly explain encapsulation and why it is important in object-oriented - programming.
Last Answer : Encapsulation is the principle that all of the data and functionality required by an object be contained by that object. This allows objects to exist as independent, interchangeable units of functionality without maintaining dependencies on other units of code.
Description : Briefly explain how to convert a string representation of a number to a numeric type, such as an Integer or a Double.
Last Answer : All numeric data types have a Parse method that accepts a string parameter and returns the value represented by that string cast to the appropriate data type. You can use the Parse method of each data type to convert strings to that type.
Description : Explain what a delegate is and how one works.
Last Answer : A delegate acts like a strongly typed function pointer. Delegates can invoke the methods that they reference without making explicit calls to those methods.
Description : Explain when a type conversion will undergo an implicit cast and when you must perform an explicit cast. What are the dangers associated with explicit casts?
Last Answer : Types can be implicitly converted when the conversion can always take place without any potential loss of data. When a potential loss of data is possible, an explicit cast is required. If an explicit cast is improperly performed, a loss of data precision can result, or an exception can be thrown.
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 : Explain what constructors and destructors are and describe what they are used for.
Last Answer : The constructor is the method that initializes a class or structure and is run when a type is first instantiated. It is used to set default values and perform other tasks required by the class. ... reclaimed by garbage collection. It contains any code that is required for cleanup of the object.
Description : Briefly explain what is meant by a reference type and a value type.
Last Answer : A value type holds all of the data represented by the variable within the variable itself. A reference type contains a reference to a memory address that holds the data instead of the actual data itself.
Description : Explain ACID rule of thumb for transactions.
Last Answer : A transaction must be: 1. Atomic - it is one unit of work and does not dependent on previous and following transactions. 2. Consistent - data is either committed or roll back, no in-between ... . Durable - the values persist if the data had been committed even if the system crashes right after.
Description : Explain the three services model commonly know as a three-tier application.
Last Answer : Presentation (UI), Business (logic and underlying code) and Data (from storage or other sources).
Description : Explain sizeof and typeof.
Last Answer : typeof obtains the System.Type object for a type and sizeof obtains the size of a type.
Last Answer : A transaction must be: 1. Atomic - it is one unit of work and does not dependent on previous and following transactions. 2. Consistent - data is either committed or roll back, no in-between ... 4. Durable - the values persist if the data had been committed even if the system crashes right after.
Description : Explain the “static” keyword in C#?
Last Answer : “Static” keyword can be used for declaring a static member. If the class is made static then all the members of the class are also made static. If the variable is made static then it will have a single instance and the value change is updated in this instance.
Description : Explain namespaces in C#?
Last Answer : Namespaces are containers for the classes. We will use namespaces for grouping the related classes in C#. “Using” keyword can be used for using the namespace in other namespaces.
Description : Explain sealed class in C#?
Last Answer : A sealed class is used to prevent the class from being inherited from other classes. So “sealed” modifier also can be used with methods to avoid the methods to override in the child classes.
Description : What si the difference between interface and abstractclass Select Answer: 1. interface contain only methods 2. we can't declare a variable for interface 3. interface contain only events 4. None 5. All
Last Answer : Ans : 2 The only Difference between Interface and Abstract class is we can declare a variable in abstract class but we can't declare in variable interface
Description : What is the lifespan for items stored in ViewState? Select Answer: 1. Item stored in ViewState exist for the life of the current page 2. Item stored in ViewState exist for the life ... of the current Applicaiton 4. Item stored in ViewState exist for the life of the current configuration
Last Answer : 1. Item stored in ViewState exist for the life of the current page AS any web application works on request and response basis ,so on every post backs, The data in control gets lost. To retain page ... control with data. The life cycle of the view state exist for life of current running page only.
Description : Which one of the following tools is used to view the metadata information contained in a .NET assembly? Select Answer: 1. al.exe 2. ilasm.exe 3. vbx.exe 4. csc.exe 5. ildasm.exe
Last Answer : 5. ildasm.exe
Description : How would you ensure that all relevant registry entries were removed in the event that installation of your application failed?
Last Answer : You can ensure that registry entries are removed, as well as perform any other “clean-up” tasks, by creating an Installer class and writing the appropriate code in the Rollback event handler. Then create a new Custom Action and set the InstallerClass, and EntryPoint properties to appropriate values.
Description : Describe a general strategy for creating a setup project that terminates installation if a specific file is not already installed on the target machine.
Last Answer : First, create a file search to search the file system for the specific file. Then create a launch condition to evaluate the results of the search. You can connect the launch condition to ... in the search's Property property in the expression specified by the launch condition's Condition property.
Description : What is the purpose of a bootstrapper application? When do you not need to create one?
Last Answer : A bootstrapper application automatically detects if Windows Installer is installed on the target machine. If Windows Installer is not present, it installs Windows Installer before proceeding with the rest ... Installer 1.5 already installed) or have had Microsoft Installer 1.5 installed previously.
Description : What is a native image? How do you create one?
Last Answer : A native image is a precompiled version of a .NET assembly. You can create a native image of your application by using the Ngen.exe utility.
Description : Describe XCOPY deployment. Under what conditions is it useful? When can it not be used?
Last Answer : XCOPY deployment is a simple method of deployment where the DOS command XCOPY is used to copy the application directory and any subdirectories to the target machine. You can use XCOPY ... an application requires a more complex deployment or references shared assemblies, you cannot use XCOPY.
Description : What is a shared assembly? How would you create one?
Last Answer : An assembly is an assembly of which only a single copy is installed per machine. This copy can be shared by multiple applications. To make an assembly a shared assembly, you must first assign it a strong name, and then install it to the global assembly cache.
Description : Briefly highlight the differences between imperative and declarative security as they pertain to code access security.
Last Answer : Imperative security is implemented by calling methods of Permission objects in code at run time. Declarative security is configured by attaching attributes representing permissions to classes ... request assembly-wide permissions using the Assembly (assembly) directive with declarative security.
Description : Describe how to use code to retrieve resources at run time.
Last Answer : You must first create an instance of the ResourceManager class that is associated with the assembly that contains the desired resource. You can then use the GetString method to retrieve string resources or the GetObject method to retrieve object resources.
Description : Describe how to sign your assembly with a strong name. Why would you want to do this?
Last Answer : To sign your assembly with a strong name, you must have access to a key file or create one with the strong name utility (sn.exe). You then specify the key file in the AssemblyInfo file and ... identity, a strong name is required if you want to install your assembly to the Global Assembly Cache.
Description : Describe how to create localized versions of a form.
Last Answer : To create a localized version of a form, set the Localizable property to true. Then set the Language property to the language/region for which you want to create the localized form. Make ... be stored in resource files and loaded when the CurrentUICulture is set to the appropriate CultureInfo.