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Csharp Articles
Page 103 of 196
Get the creation time of a file in C#
To get the creation time of a file in C#, use the CreationTime() method.For this, use the FileInfo as well as DateTime classes.Create an object of each −FileInfo file = new FileInfo("new.txt"); DateTime dt = file.CreationTime;Let us see the complete code −Exampleusing System.IO; using System; public class Program { public static void Main() { using (StreamWriter sw = new StreamWriter("qa.txt")) { sw.WriteLine("Questions and Answers!"); } FileInfo file = new FileInfo("qa.txt"); // file creation time DateTime dt = file.CreationTime; Console.WriteLine(dt); } }Output9/5/2018 5:20:03 AM
Read MoreLowercase suffixes in C#
Set lowercase suffixes for literals such as u, l, ul, f, etc.// l for long long a = 29876l;It can be used on literal numbers as well. It tells the compiler that the literal is of a specific type.The following is an example −Exampleusing System.IO; using System; public class Program { public static void Main() { long a = 29876l; float b = 95.10f; Console.WriteLine(a); Console.WriteLine(b); } }On running the above example, you will get the following output. With that, you will also get a message ...
Read MoreLiteral number suffixes in C#
To specify number types, use suffixes in C#. Literal number suffixes are numeric suffixes.For example, for long type −// long suffix long val1 = 29345L;For double type −// double suffix double val2 = 297.325D; Console.WriteLine(val2);Let us see more examples −Exampleusing System.IO; using System; public class Program { public static void Main() { // long suffix long val1 = 29345L; Console.WriteLine(val1); // decimal suffix decimal val5 = 3245.5678M; Console.WriteLine(val5); // double suffix double val2 = 297.325D; Console.WriteLine(val2); // float suffix float val3 = 250.35F; Console.WriteLine(val3); // unsigned suffix uint val4 = 3456U; Console.WriteLine(val4); } }Output29345 3245.5678 297.325 250.35 3456
Read MoreElementAt() method in C#
ElementAt() is a System.Linq method in C# that is used to get and display element at a particular index.The following is our string array −string[] arr = { "One", "Two", "Three", "Four", "Five" };Now to get an element at index 0, use the ElementAt() method −arr.ElementAt(0);The following is the complete code −Exampleusing System.IO; using System; using System.Linq; public class Demo { public static void Main() { string[] arr = { "One", "Two", "Three", "Four", "Five" }; // displaying element at index 0 string res = arr.ElementAt(0); Console.WriteLine(res); } }OutputOne
Read MoreSkipWhile method in C#
SkipWhile skips an element when a condition is matched.For example, use the following if you want to skip all even elements −ele => ele %2 == 0The following is an example wherein all the even elements are skipped and only the odd elements are displayed −Exampleusing System.IO; using System; using System.Linq; public class Demo { public static void Main() { int[] arr = { 20, 35, 55 }; Console.WriteLine("Initial array..."); foreach (int value in arr) { Console.WriteLine(value); } // skipping ...
Read MoreC# Program to get the first three elements from a list
Use the Take() method to get the first individual number of elements in C#.Firstly, set a list and add elements −List myList = new List(); myList.Add("One"); myList.Add("Two"); myList.Add("Three"); myList.Add("Four"); myList.Add("Five"); myList.Add("Six");Now, use the Take() method to get the elements from the list. Add the number of the elements you want as an argument −myList.Take(3)Here is the code −Exampleusing System; using System.Linq; using System.Collections.Generic; public class Demo { public static void Main() { List myList = new List(); myList.Add("One"); myList.Add("Two"); myList.Add("Three"); myList.Add("Four"); ...
Read MoreC# Program to display a string in reverse alphabetic order
Set a string array and convert it to character array −string str = "Amit"; char[] arr = str.ToCharArray();Now, use the Reverse method to display the above string in reverse alphabetic order −Array.Reverse(arr);Here is the complete code −Exampleusing System; using System.Linq; using System.IO; class Program { static void Main() { string str = "Amit"; char[] arr = str.ToCharArray(); Console.WriteLine("Original String: "+str); // Reverse Array.Reverse(arr); Console.WriteLine("Reversed String: "+new string(arr)); } }OutputOriginal String: Amit Reversed String: timA
Read MoreC# Program to split a string on spaces
Firstly, set a string −string str = "Science and Mathematics";Now use the Split() method to split wherever the spaces occur −str.Split(' ')The following is the complete code −Exampleusing System; using System.Linq; using System.IO; class Program { static void Main() { string str = "Science and Mathematics"; Console.WriteLine("String..."+str); string[] myStr = str.Split(' '); Console.WriteLine("Splitted String..."); foreach (string ch in myStr) { Console.WriteLine(ch); } } }OutputString... Science and Mathematics Splitted String... Science and Mathematics
Read MoreC# Program to split parts in a Windows directory
Firstly, set a string i.e. your Windows directory path −string str = @"D:\Downloads\Amit";Now use the Split() method and split wherever the \ occur −str.Split(' ')The following is the complete code −Exampleusing System; class Program { static void Main() { string str = @"D:\Downloads\Amit"; Console.WriteLine("Directory..."+str); string[] myStr = str.Split(''); Console.WriteLine("Split..."); foreach (string ch in myStr) { Console.WriteLine(ch); } } }OutputDirectory... D:\Downloads\Amit Split... D: Downloads Amit
Read MoreC# Program to write a number in hexadecimal format
Let’s say the following is the number −int a = 12250;You can work around the following ways to get a number in hexadecimal format −{0:x} {0:x8} {0:X} {0:X8}Here is the code −Exampleusing System; class Demo { static void Main() { int a = 12250; Console.WriteLine("{0:x}", a); Console.WriteLine("{0:x8}", a); Console.WriteLine("{0:X}", a); Console.WriteLine("{0:X8}", a); } }Output2fda 00002fda 2FDA 00002FDA
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