Programming Articles - Page 2252 of 3366

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

To add the element to HashSet, the code is as follows −Example Live Demousing System; using System.Collections.Generic; public class Demo {    public static void Main(String[] args){       HashSet set1 = new HashSet();       set1.Add("A");       set1.Add("B");       set1.Add("C");       set1.Add("D");       set1.Add("E");       set1.Add("F");       set1.Add("G");       set1.Add("H");       Console.WriteLine("Elements in HashSet1...");       foreach (string res in set1){          Console.WriteLine(res);       }       HashSet set2 = new HashSet();       ... Read More

To get the fields of the current Type, the code is as follows −Example Live Demousing System; using System.Reflection; public class Demo {    public static void Main() {       Type type = typeof(System.String);       FieldInfo [] fields = type.GetFields(BindingFlags.Static | BindingFlags.NonPublic);       Console.WriteLine ("Following are the non-public fields=");       foreach (FieldInfo myField in fields) {          Console.WriteLine(myField.ToString());       }    } }OutputThis will produce the following output −Following are the non-public fields= Int32 TrimHead Int32 TrimTail Int32 TrimBoth Int32 charPtrAlignConst Int32 alignConstExampleLet us see another example − Live Demousing System; using System.Reflection; public class Demo {   ... Read More

To get the handle for the Type of a specified object, the code is as follows −Example Live Demousing System; public class Demo {    public static void Main() {       Type type1 = typeof(System.Type);       RuntimeTypeHandle typeHandle = Type.GetTypeHandle(type1);       Type type = Type.GetTypeFromHandle(typeHandle);       Console.WriteLine("Attributes = " + type.Attributes);       Console.WriteLine("Type Referenced = "+ type);    } }OutputThis will produce the following output −Attributes = AutoLayout, AnsiClass, Class, Serializable, BeforeFieldInit Type Referenced = System.RuntimeTypeExampleLet us see another example − Live Demousing System; public class Demo {    public static void ... Read More

A lambda expression is an inline code that implements a functional interface without creating a concrete or anonymous class. A lambda expression is basically an anonymous method.Advantages of Lambda ExpressionFewer Lines of Code − One of the most benefits of a lambda expression is to reduce the amount of code. We know that lambda expressions can be used only with a functional interface. For instance, Runnable is a functional interface, so we can easily apply lambda expressions.Sequential and Parallel execution support by passing behavior as an argument in methods − By using Stream API in Java 8, the functions are passed to collection methods. Now ... Read More

To check whether the Dictionary has the specified key or not, the code is as follows −Example Live Demousing System; using System.Collections.Generic; public class Demo {    public static void Main() {       Dictionary dict =       new Dictionary();       dict.Add("One", "John");       dict.Add("Two", "Tom");       dict.Add("Three", "Jacob");       dict.Add("Four", "Kevin");       dict.Add("Five", "Nathan");       Console.WriteLine("Count of elements = "+dict.Count);       Console.WriteLine("Key/value pairs...");       foreach(KeyValuePair res in dict) {          Console.WriteLine("Key = {0}, Value = {1}", res.Key, res.Value); ... Read More

To indicate whether the specified Unicode character is white space, the code is as follows −Example Live Demousing System; public class Demo {    public static void Main() {       bool res;       char val = ' ';       Console.WriteLine("Value = "+val);       res = Char.IsWhiteSpace(val);       Console.WriteLine("Is the value whitespace? = "+res);    } }OutputThis will produce the following output −Value = Is the value whitespace? = TrueExampleLet us see another example − Live Demousing System; public class Demo {    public static void Main() {       bool res; ... Read More

The StringCollection class represents a collection of strings. Following are the properties of the StringCollection class −Sr.noProperty & Description1CountGets the number of key/values pairs contained in the OrderedDictionary collection.2IsReadOnlyGets a value indicating whether the StringCollection is read-only..3IsSynchronizedGets a value indicating whether access to the StringCollection is synchronized (thread safe).4Item[Int32]Gets or sets the element at the specified index.5SyncRootGets an object that can be used to synchronize access to the StringCollection.Following are the methods of the StringCollection class −Sr.noMethod & Description1Add(String)Adds a string to the end of the StringCollection.2AddRange(String[])Copies the elements of a string array to the end of the StringCollection.3Clear()Removes all ... Read More

To find the capacity of a StringBuilder in C#, the code is as follows −Example Live Demousing System; using System.Text; public class Demo {    public static void Main(String[] args) {       StringBuilder strBuilder1 = new StringBuilder("Tim");       StringBuilder strBuilder2 = new StringBuilder("Tom");       StringBuilder strBuilder3 = new StringBuilder();       Console.WriteLine("Capacity of StringBuilder1 = "+strBuilder1.Capacity);       Console.WriteLine("Capacity of StringBuilder2 = "+strBuilder2.Capacity);       Console.WriteLine("Capacity of StringBuilder3 = "+strBuilder3.Capacity);       strBuilder2 = strBuilder3;       Console.WriteLine("Is StringBuilder3 equal to StringBuilder2? = "+strBuilder3.Equals(strBuilder2));    } }OutputThis will produce the ... Read More

To get the total number of elements present in an array, the code is as follows −Example Live Demousing System; public class Demo {    public static void Main() {       string[] products = { "Electronics", "Accessories", "Clothing", "Toys", "Clothing", "Furniture" };       Console.WriteLine("Products list...");       foreach(string s in products) {          Console.WriteLine(s);       }       Console.WriteLine("Array length = "+products.GetLength(0));       Console.WriteLine("One or more products begin with the letter 'C'? = {0}", Array.Exists(products, ele => ele.StartsWith("C")));       Console.WriteLine("One or more planets begin with 'D'? ... Read More