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Articles by karthikeya Boyini
Page 96 of 143
C# program to Display Hostname and IP address
To find the hostname, use the Dns.GetHostName() method in C# −String hostName = string.Empty; hostName = Dns.GetHostName(); Console.WriteLine("Hostname: "+hostName);Now, use the IPHostEntry.AddressList Property to get IP Address −IPHostEntry myIP = Dns.GetHostEntry(hostName); IPAddress[] address = myIP.AddressList;ExampleTry the following code to display hostname and IP address −using System; using System.Net; class Program { static void Main() { String hostName = string.Empty; hostName = Dns.GetHostName(); Console.WriteLine("Hostname: "+hostName); IPHostEntry myIP = Dns.GetHostEntry(hostName); IPAddress[] address = myIP.AddressList; for (int i = 0; i < address.Length; i++) { Console.WriteLine("IP Address {1} : ",address[i].ToString()); } Console.ReadLine(); } }
Read MoreC# program to find IP Address of the client
Firstly find the hostname using the Dns.GetHostName() method in C# −String hostName = string.Empty; hostName = Dns.GetHostName(); Console.WriteLine("Hostname: "+hostName);Now, use the IPHostEntry.AddressList Property to get IP Address −IPHostEntry myIP = Dns.GetHostEntry(hostName); IPAddress[] address = myIP.AddressList;ExampleTry the following code to display IP address −using System; using System.Net; class Program { static void Main() { String hostName = string.Empty; hostName = Dns.GetHostName(); IPHostEntry myIP = Dns.GetHostEntry(hostName); IPAddress[] address = myIP.AddressList; for (int i = 0; i < address.Length; i++) { Console.WriteLine("IP Address {1} : ",address[i].ToString()); } Console.ReadLine(); } }
Read MoreWhat happens when we apply NOT NULL constraint, with ALTER TABLE statement, to a column contains NULL values?
In this case, MySQL will return an error message regarding data truncated for the column. Following is an example of demonstrating it −ExampleSuppose we have a table ‘test2’ which contains a NULL value in column ‘ID’ at 2nd row. Now, if we will try to declare the column ID to NOT NULL then MySQL will return the error as follows −mysql> Select * from test2; +------+--------+ | ID | Name | +------+--------+ | 1 | Gaurav | | NULL | Rahul | +------+--------+ 2 rows in set (0.00 sec) mysql> ALTER TABLE TEST2 MODIFY ID INT NOT NULL; ERROR 1265 (01000): Data truncated for column 'ID' at row 2
Read MoreC# program to display factors of entered number
Firstly, enter the number for which you want the factors −Console.WriteLine("Enter the Number:"); n = int.Parse(Console.ReadLine());After that, loop through to find the factors −for (i = 1; i
Read MoreC# Generics vs C++ Templates
C# Generics and C++ Templates provide support for parameterized types. The following are the differences −FlexibilityC++ Templates are more flexible than C# GenericsExplicit specializationExplicit specialization is not supported by C#Type ParameterThe type parameter cannot be used as the base class for the generic type in C#C# does not allow type parameters to have default types.Run-TimeThe C++ template has a compile-time modal, whereas C# Generics is both compile and run-time. Generics have run-time support.Non-type template parametersC#Templates will not allow non-type template parameters.Partial SpecializationC# does not even support partial specialization.
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 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 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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