Server Side Programming Articles - Page 2512 of 2650

The best IDE for C# on Windows is Microsoft Visual Studio. It is an IDE to develop websites, web apps, mobile apps, etc.The following are the features of Visual Studio IDE−Code Editor − Visual Studio has a code editor supporting syntax highlighting and code completion using IntelliSense.Breakpoints − Set breakpoints and allow monitoring the variable values as the execution progress.Extend Capability − With Visual Studio, you can extend the functionality of the IDE. The extension includes macros, packages, etc.Built-in-languages − Visual Studio supports more than 30 programming languages, including C#, F#, JavaScript, TypeScript, etc.

When creating a class, instead of writing completely new data members and member functions, the programmer can designate that the new class should inherit the members of an existing class. This existing class is called the base class, and the new class is referred to as the derived class.A class can be derived from more than one class or interface, which means that it can inherit data and functions from multiple base classes or interfaces.The following is the syntax of base class in C# − class {    ... } class : {    ... }Let ... Read More

The following table displays the C# equivalent of SQL Server datatypes −SQL Server data typeEquivalent C# data typevarbinaryByte[]binaryByte[]imageNonevarcharNonecharNonenvarcharString, Char[]ncharString, Char[]textNonentextNonerowversionByte[]bitBooleantinyintBytesmallintInt16intInt32bigintInt64smallmoneyDecimalmoneyDecimalnumericDecimaldecimalDecimalrealSinglefloatDoublesmalldatetimeDateTimedatetimeDateTimetableNonecursorNonetimestampNonexmlNone

Exception handling is based on the following keywords and its usage −try − A try block identifies a block of code for which particular exceptions is activated. It is followed by one or more catch blocks.catch − A program catches an exception with an exception handler at the place in a program where you want to handle the problem. The catch keyword indicates the catching of an exception.finally − The finally block is used to execute a given set of statements, whether an exception is thrown or not thrown. For example, if you open a file, it must be closed ... Read More

On Windows, the best IDE to run C# programs is Visual Studio. On MacOS, the best IDE can be considered as Monodevelop.Monodevelop is an open source IDE that allows you to run C# on multiple platforms i.e. Windows, Linux and MacOS. Monodevelop is also known as Xamarin Studio.Monodevelop has a C# compiler to run C# programs. It can be used on Windows, macOS and Linux.For Mac, a special version of MonoDevelop was introduced and it was called Visual Studio for Mac. It has many of the features of what the same IDE provides for Windows like tool for and IntelliSense ... Read More

To reduce concurrency issues in C#, use the volatile keyword. Let us seen an example.The following is how you use a volatile keyword for public variable −class Program {    public volatile int a;    public void Program(int _a) {       i = _i;    } }Let us see another example: We have two static variables. Set them in a new method −_out = "Welcome!"; _new = true;We declared them as static before using volatile −static string _out; static volatile bool new;Now you need to run the method on a thread −new Thread(new ThreadStart(volatileFunc)).Start();Read the value of the ... Read More

The stream is basically the sequence of bytes passing through the communication path. There are two main streams: the input stream and the output stream. The input stream is used for reading data from file (read operation) and the output stream is used for writing into the file (write operation).The FileStream class in the System.IO namespace helps in reading from, writing to and closing files. This class derives from the abstract class Stream.Create a FileStream object to create a new file or open an existing file. The following is the syntax −FileStream = new FileStream( , , , );Here, ... Read More

Substring is used to get the sub-parts of a string in C#. We have the substring() method for this purpose. Use the substring() method in C# to check each and every substring for unique characters. Loop it until the length of the string.If anyone the substring matches another, then it would mean that the string does not have unique characters.You can try to run the following code to determine if a string has all unique characters. The example shows the usage of Substring() method −Exampleusing System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; public class Demo { ... Read More

C# exception is a response to an exceptional circumstance that arises while a program is running, such as an attempt to divide by zero.C# exception handling is performed using the following keywords −try − A try block identifies a block of code for which particular exceptions is activated. It is followed by one or more catch blocks.catch − A program catches an exception with an exception handler at the place in a program where you want to handle the problem. The catch keyword indicates the catching of an exception.finally − The finally block is used to execute a given set ... Read More

The System.SystemException class is the base class for all predefined system exception. Some of the exception classes derived from the System.Exception class are the System.ApplicationException and System.SystemException classes.The System.ApplicationException class supports exceptions generated by application programs. Hence the exceptions defined by the programmers should derive from this class.The following are the exceptions under the base class System.SystemException −Sr.No.Exception Class & Description1System.IO.IOExceptionHandles I/O errors.2System.IndexOutOfRangeExceptionHandles errors generated when a method refers to an array index out of range.3System.ArrayTypeMismatchExceptionHandles errors generated when type is mismatched with the array type.4System.NullReferenceExceptionHandles errors generated from referencing a null object.5System.DivideByZeroExceptionHandles errors generated from dividing a dividend with zero.6System.InvalidCastExceptionHandles errors ... Read More