To check for an element in a string, use the Contains() method.The following is our string array.string[] arr = { "Java", "C++", "Python"};Now, use Contains() method to find a specific string in the string array.arr.AsQueryable().Contains(str);Let us see the complete example.Example Live Demousing System; using System.Linq; using System.Collections.Generic; class Demo {   ... Read More

To represent Int64 as a Binary string in C#, use the ToString() method and set the base as the ToString() method’s second parameter i.e.16 for Hexadecimal.Int64 represents a 64-bit signed integer.Firstly, set an Int64 variable.long val = 947645;Now, convert it to a hex string by including 16 as the second ... Read More

To convert a Byte value to an Int32 value, use the Convert.ToInt32() method.Int32 represents a 32-bit signed integer.Let’s say the following is our Byte value.byte val = Byte.MaxValue;;Now to convert it to Int32.int intVal = Convert.ToInt32(val);Let us see the complete example.Example Live Demousing System; public class Demo {    public static ... Read More

Use the LastorDefault() method to return the last element of a sequence or a default value if element isn’t there.The following is our empty list.List val = new List { };Now the following will not be able to display the last element since the list is empty. Therefore, the default ... Read More

Get specified number of elements from the end using the TakeLast() method.The following is our array.int[] pages = { 492, 290, 129, 602, 152 };Now, use OrderBy to order the elements in ascending order. Then use the TakeLast() method to get specified number of elements from the end.marks.AsQueryable().OrderByDescending(s => s).Take(5);Let ... Read More

To check whether two sequences are equal or not, use the SequenceEqual() method.Firstly, set the sequences.Employee emp1 = new Employee { EmployeeRank = 4, EmpName = "Amit", EmpMarks = 90 }; Employee emp2 = new Employee { EmployeeRank = 5, EmpName = "Raman", EmpMarks = 95 }; List employee1 = ... Read More

The numeric ("N") format specifier converts a number to a string of the following form −"-d, ddd, ddd.ddd…"Above, "-" is a negative number symbol if required, "d" is a digit (0-9), ", " indicates a group separator, "." is a decimal point symbolExample Live Demousing System; using System.Globalization; class Demo { ... Read More

UShort represents a 16-bit unsigned integer.To implicitly convert of a 16-bit unsigned integer to a decimal, firstly set a ushort value.ushort val = 193;To convert ushort to decimal, assign the value.decimal dec; dec = val;Let us see an example.Exampleusing System; public class Demo {    public static void Main() { ... Read More

Convert the specified value to its equivalent string using the ToString() method.Initialize a bool value.bool boolVal = false;Now, to convert it to a string, use the ToString() method.Convert.ToString(boolVal)The following is the complete example.Example Live Demousing System; public class Demo {    public static void Main() {       bool boolVal ... Read More

Clear a Hashtable, using the Clear() method in C#.The following is our Hashtable −Hashtable h = new Hashtable(); h.Add(1, "Amit"); h.Add(2, "Sachin"); h.Add(3, "Rahul");Use the clear method.h.Clear();If you will now try to display the Hashtable, nothing would get display since the Hashtable is empty.Example Live Demousing System; using System.Collections; public class ... Read More