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Csharp Articles
Page 165 of 196
C# program to check if string is panagram or not
A pangram has all the 26 letters of an alphabet. Below, we have entered a string, and will check whether it is a pangram or not – string str = "The quick brown fox jumps over the lazy dog"; Now, check using the ToLower(), isLetter() and Count() functions that the string has all the 26 letters of not since pangram has all the 26 letters of an alphabet. Example You can try to run the following code to check whether a string is pangram or not. using System; using System.Collections.Generic; using System.Linq; using System.Text.RegularExpressions; namespace Demo { public class Program { public static void Main(string []arg) { string str = "The quick brown fox jumps over the lazy dog"; Console.WriteLine("{0}: \"{1}\" is pangram", checkPangram(str), str); Console.ReadKey(); } static bool checkPangram(string str) { ...
Read MoreBoxing and Unboxing in C#
BoxingBoxing is the implicit conversion of a value type to a reference type.UnboxingUnboxing is the explicit conversion of the reference type created by boxing, back to a value type.ExampleLet us see an example code snippet −// int int myVal = 12; // Boxing object myBoxed = myVal; // Unboxing int myUnBoxed = (int) myBoxed;Let us see another example that shows an array list in C# −int a = 5; ArrayList arr = new ArrayList(); // Boxing arr.Add(a); // UnBoxing int b = (int)arr[0];
Read MoreBackground and foreground thread in C#
A thread is defined as the execution path of a program. Each thread defines a unique flow of controlBackground ThreadsWhen the foreground threads will close, the background threads will be terminated.The property used for background thread is IsBackground that gets or sets a value indicating whether a thread is a background thread. The default value of this property would be false because the default threads created are Foreground Threads.To create a background thread −Thread bgThread = new Thread(tStart); bgThread.IsBackground = true; bgThread.Start();Foreground ThreadsForeground threads continue to run until the last foreground thread is terminated.When all the foreground threads are stopped, ...
Read MoreBackground Worker Class in C#
As the name suggests the Background Worker Class allows you to set a thread continuously running in the background and communicating with the main thread whenever required.BackgroundWorker makes the implementation of threads in Windows Forms. Intensive tasks need to be done on another thread so the UI does not freeze. It is necessary to post messages and update the user interface when the task is done. The following properties are used in BackgroundWorker class:Reference: Microsoft Developer Network (MSDN)S.No.Name & Description1CancellationPendingA value indicating whether the application has requested cancellation of a background operation.2CanRaiseEventsGets a value indicating whether the component can raise ...
Read MoreBasic calculator program using C#
To create a calculator program in C#, you need to use Web Forms. Under that create buttons from 1-9, addition, subtraction, multiplication, etc.Let us see the code for addition, subtraction, and multiplication. Firstly, we have declared two variables −static float x, y;Now, we will see how to set codes for calculation on individual button click: Our result textbox is tbResult since we have used Windows Form as well to display the calculator −protected void add_Click(object sender, EventArgs e) { x = Convert.ToInt32(tbResult.Text); tbResult.Text = ""; y = '+'; tbResult.Text += y; } protected void sub_Click(object sender, ...
Read MoreBigInteger Class in C#
Use the BigInteger to handle big numbers in C#. The assembly to add for BigInteger is System. Numerics.In c# Big integer is found in System.Numerics.BigInteger.SyntaxThe syntax of BigInteger −[SerializableAttribute] public struct BigInteger : IFormattable, IComparable, IComparable, IEquatableLet us see an example code snippet −BigInteger num = BigInteger.Multiply(Int64.MaxValue, Int64.MaxValue);You can create BigInteger like this −BigInteger num = new BigInteger(double.MaxValue);The following are some of its constructors −S.No.Constructor & Description1BigInteger(Byte[ ])A new instance of the BigInteger structure using the values in a byte array.2BigInteger(Decimal)A new instance of the BigInteger structure using a Decimal value. 3BigInteger(Double)A new instance of ...
Read MoreBinary to decimal using C#
To convert binary to decimal, here I have used a while loop and found the remainder of the Binary number, which is the input. After that, the remainder is multiplied by the base value and added. This is what I did to get the decimal value − while (val > 0) { remainder = val % 10; myDecimal = myDecimal + remainder* baseVal; val = val / 10; baseVal = baseVal * 2; } Example Let us see the complete code to convert binary to decimal in C# − using System; using System.Collections.Generic; using System.Text; namespace Demo { class toBinary ...
Read MoreBitwise right shift operators in C#
Bitwise operator works on bits and performs bit by bit operation. In Bitwise right shift operator the value of the left operand is moved right by the number of bits specified by the right operand.In the below code, we have the value −60 i.e. 0011 1100On the right shift %minus;c = a >> 2;It converts into 15 after right shift twice −15 i.e. 0000 1111ExampleYou can try to run the following code to implement Bitwise right shift operator in C# −using System; using System.Collections.Generic; using System.Text; namespace Demo { class toBinary { static void Main(string[] args) ...
Read MoreAssertions in C#
Assert statements are an effective way to catch program logic errors at runtime. It has two arguments −A boolean expression for a true condition, andWhat to display in case of false.Assertions are useful in large and complex programs to quickly flush out errors that generally arise when the code is modified. Avoid using any function call inside the assert method.You need to be sure that whatever code you add inside an Assert should not change the output if it is removed. This is when you implement Debug. Assert in your program.To implement it, you can use a temporary variable −int ...
Read MoreAbstract vs Sealed Classes vs Class Members in C#
The abstract class includes abstract and non-abstract methods. You cannot instantiate an abstract class.The sealed class prevents inheritance and you cannot use it as a base class.Abstract ClassesTo declare an abstract class, you need to place the keyword abstract before the class definition. An example of class members in an abstract class can be the following that defines an abstract method −public abstract class Vehicle { public abstract void display(); }The abstract method definition is followed by a semi-colon since it has no implementation.Sealed ClassesTo declare a sealed class, you need to place the keyword sealed before the class definition. ...
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