To add elements of the specified collection to the end of the List, the code is as follows −Example Live Demousing System; using System.Collections.Generic; public class Demo {    public static void Main(String[] args){       List list = new List();       list.Add("Andy");       list.Add("Gary");       list.Add("Katie");       list.Add("Amy");       Console.WriteLine("Elements in List...");       foreach (string res in list){          Console.WriteLine(res);       }       string[] strArr = { "John", "Jacob" };       list.AddRange(strArr);       Console.WriteLine("Elements in List...UPDATED"); ... Read More

To add new node or value at the start of LinkedList, the code is as follows −Example Live Demousing System; using System.Collections.Generic; public class Demo {    public static void Main(){       LinkedList list = new LinkedList();       list.AddLast("A");       list.AddLast("B");       list.AddLast("C");       list.AddLast("D");       list.AddLast("E");       list.AddLast("F");       Console.WriteLine("Count of nodes = " + list.Count);       Console.WriteLine("Elements in LinkedList...");       foreach (string res in list){          Console.WriteLine(res);       }       list.AddLast("G");   ... Read More

To check if OrderedDictionary collection is read-only, the code is as follows −Example Live Demousing System; using System.Collections; using System.Collections.Specialized; public class Demo {    public static void Main(){       OrderedDictionary dict = new OrderedDictionary();       dict.Add("1", "One");       dict.Add("2", "Two");       dict.Add("3", "Three");       dict.Add("4", "Four");       dict.Add("5", "Five");       dict.Add("6", "Six");       dict.Add("7", "Seven");       dict.Add("8", "Eight");       ICollection col = dict.Values;       String[] strVal = new String[dict.Count];       col.CopyTo(strVal, 0);       Console.WriteLine("Displaying ... Read More

To convert the value of the specified Decimal to the equivalent 16-bit unsigned integer, the code is as follows −Example Live Demousing System; public class Demo {    public static void Main() {       Decimal val = 875.647m;       Console.WriteLine("Decimal value = "+val);       ushort res = Decimal.ToUInt16(val);       Console.WriteLine("16-bit unsigned integer = "+res);    } }OutputThis will produce the following output −Decimal value = 875.647 16-bit unsigned integer = 875ExampleLet us see another example − Live Demousing System; public class Demo {    public static void Main() {       Decimal val = 0.001m;       Console.WriteLine("Decimal value ... Read More

To check if OrderedDictionary collection contains a specific key, the code is as follows −Example Live Demousing System; using System.Collections; using System.Collections.Specialized; public class Demo {    public static void Main(){       OrderedDictionary dict = new OrderedDictionary();       dict.Add("1", "One");       dict.Add("2", "Two");       dict.Add("3", "Three");       dict.Add("4", "Four");       dict.Add("5", "Five");       dict.Add("6", "Six");       dict.Add("7", "Seven");       dict.Add("8", "Eight");       ICollection col = dict.Values;       String[] strVal = new String[dict.Count];       col.CopyTo(strVal, 0);     ... Read More

To get the hash code for this instance, the code is as follows −Example Live Demousing System; public class Demo {    public static void Main() {       string[] arr = {"tom", "amit", "kevin", "katie"};       Type t1 = arr.GetType();       Type t2 = t1.GetElementType();       Console.WriteLine("Type = "+t2.ToString());       Console.WriteLine("Hash Code = "+t1.GetHashCode());    } }OutputThis will produce the following output −Type = System.String Hash Code = 9144789ExampleLet us see another example − Live Demousing System; public class Demo {    enum Vehicle {Car, Bus, Bike, Airplane}    public static void ... Read More

To add an element into the Hashtable, the code is as follows −Example Live Demousing System; using System.Collections; public class Demo {    public static void Main(){       Hashtable hash = new Hashtable(10);       hash.Add("1", "A");       hash.Add("2", "B");       hash.Add("3", "C");       hash.Add("4", "D");       hash.Add("5", "E");       hash.Add("6", "F");       hash.Add("7", "G");       hash.Add("8", "H");       hash.Add("9", "I");       hash.Add("10", "J");       Console.WriteLine("Hashtable Key and Value pairs...");       foreach(DictionaryEntry entry in hash){   ... Read More

To get a specific field of the current type in C#, the code is as follows −Example Live Demousing System; using System.Reflection; public class Demo {    public static void Main() {    Type type = typeof(Subject);       try {          FieldInfo fieldInfo = type.GetField("SubName");          Console.WriteLine("FieldInfo = {0}", fieldInfo);       }       catch (ArgumentNullException e) {          Console.Write("{0}", e.GetType(), e.Message);       }    } } public class Subject {    public string SubName = "Science"; }OutputThis will produce the following output −FieldInfo = ... Read More

To add the specified key and value into the ListDictionary, the code is as follows −Example Live Demousing System; using System.Collections; using System.Collections.Specialized; public class Demo {    public static void Main(){       ListDictionary dict = new ListDictionary();       dict.Add("1", "One");       dict.Add("2", "Two");       dict.Add("3", "Three");       dict.Add("4", "Four");       dict.Add("5", "Five");       Console.WriteLine("ListDictionary key-value pairs...");       IDictionaryEnumerator demoEnum = dict.GetEnumerator();       while (demoEnum.MoveNext())          Console.WriteLine("Key = " + demoEnum.Key + ", Value = " + demoEnum.Value);    } ... Read More

To get the array of the values of the constants in the current enumeration type, the code is as follows −Example Live Demousing System; public class Demo {    enum Vehicle {Car, Bus, Bike, Airplane}    public static void Main() {       try {          Type type = typeof(int);          string[] str = type.GetEnumNames();          Console.WriteLine("GetEnumNames() to return the constant name = " + str);          Type type2 = type.GetEnumUnderlyingType();          Console.Write("Enum Underlying type = "+type2);          Array arrObj = type.GetEnumValues(); ... Read More