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The Math.Acos() method in C# returns the angle whose cosine is the specified number. This number is a double value argument. SyntaxThe syntax is as follows −public static double Acos (double val);Above, Val is the number representing a cosine, where Val must be greater than or equal to -1, but less than or equal to 1.ExampleLet us now see an example to implement Math.Acos() method −using System; public class Demo { public static void Main(){ double val1 = -0.0; double val2 = Double.PositiveInfinity; double val3 = Double.NaN; Console.WriteLine("Return ... Read More
The Math.Abs() method in C# is used to return the absolute value of a specified number in C#. This specified number can be decimal, double, 16-bit signed integer, etc.ExampleLet us now see an example to implement the Math.abs() method to return the absolute value of double number −using System; class Demo { public static void Main(){ Double val1 = 30.40; Double val2 = Double.MinValue; Double val3 = Double.MaxValue; Console.WriteLine("Absolute value of {0} : {1}", val1, Math.Abs(val1)); Console.WriteLine("Absolute value of {0} : {1}", val2, Math.Abs(val2)); ... Read More
The Dictionary.Values property in C# is used to fetch all the values in the Dictionary.SyntaxFollowing is the syntax −public System.Collections.Generic.Dictionary.KeyCollection Values{ get; }ExampleLet us now see an example to implement the Dictionary.Values property −using System; using System.Collections.Generic; public class Demo { public static void Main(){ Dictionary dict = new Dictionary(); dict.Add("One", "Kagido"); dict.Add("Two", "Ngidi"); dict.Add("Three", "Devillers"); dict.Add("Four", "Smith"); dict.Add("Five", "Warner"); Console.WriteLine("Count of elements = "+dict.Count); Console.WriteLine("Key/value pairs..."); foreach(KeyValuePair res in dict){ ... Read More
Dictionary in C# is a collection of keys and values. It is a generic collection class in the System.Collection.Generics namespace.SyntaxFollowing is the syntax −public class DictionaryAbove, the key parameter is the type of keys in the dictionary, whereas TValue is the type of values.ExampleLet us now create a Dictionary and add some elements −using 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"); ... Read More
The Convert.ToSByte() method in C# converts the specified string representation of a number to an equivalent 8-bit signed integer, using the specified culture-specific formatting information.SyntaxFollowing is the syntax −public static sbyte ToSByte (string val, IFormatProvider provider);Above, the parameter value is a string that contains the number to convert. A provider parameter is an object that supplies culture-specific formatting information.ExampleLet us now see an example to implement the Convert.ToSByte() method −using System; using System.Globalization; public class Demo { public static void Main(){ CultureInfo cultures = new CultureInfo("en-US"); String str = "-2"; ... Read More
The Convert.ToDouble() method in C# converts the specified string representation of a number to an equivalent double-precision floating-point number, using the specified culture-specific formatting information.SyntaxFollowing is the syntax −public static double ToDouble (string val, IFormatProvider provider);Above, the value value is a string that contains the number to convert, whereas the provider is an object that supplies culture-specific formatting information.ExampleLet us now see an example to implement the Convert.ToDouble() method −using System; using System.Globalization; public class Demo { public static void Main(){ String val = "876876, 878"; NumberFormatInfo formatProvider = new NumberFormatInfo(); ... Read More
The DateTime.AddHours() method in C# is used to add the specified number of hours to the value of this instance. This method returns a new DateTime.SyntaxFollowing is the syntax −public DateTime AddHours (double hrs);Above, hrs are the number of hours to be added. The value can be negative to subtract the hours.ExampleLet us now see an example to implement the DateTime.AddHours() methodusing System; public class Demo { public static void Main(){ DateTime d1 = new DateTime(2019, 11, 2, 9, 0, 10); DateTime d2 = d1.AddHours(2); System.Console.WriteLine("Initial DateTime = {0:dd} {0:y}, ... Read More
The DateTime.AddDays() method in C# is used to add the specified number of days to the value of this instance. This method returns a new DateTime.SyntaxFollowing is the syntax −public DateTime AddDays (double days);Above, the parameter days are the number of days to be added. To subtract, add a negative value.ExampleLet us now see an example to implement the DateTime.AddDays() method −using System; public class Demo { public static void Main(){ DateTime d1 = new DateTime(2019, 11, 2, 8, 0, 15); DateTime d2 = d1.AddDays(25); System.Console.WriteLine("Initial DateTime = {0:y} {0:dd}", ... Read More
The DateTime.Add() method in C# is used to return a new DateTime that adds the value of the specified TimeSpan to the value of this instance.SyntaxFollowing is the syntax −public DateTime Add (TimeSpan val);Above, Val is the positive or negative time interval.ExampleLet us now see an example to implement the DateTime.Add() method −using System; public class Demo { public static void Main(){ DateTime d1 = new DateTime(2019, 3, 7, 8, 0, 15); TimeSpan span = new TimeSpan(115, 0, 0, 0); DateTime d2 = d1.Add(span); System.Console.WriteLine("Initial DateTime = ... Read More
The :submit selector in jQuery is used to select button and input elements with type submit.SyntaxThe syntax is as follows −$(":submit")ExampleLet us now see an example to implement the jQuery :submit selector − .one { background-color: green; color: white; font-size: 18px; border: 2px blue dashed; } $(document).ready(function(){ $(":submit").addClass("one"); }); Fill the Form Username: Set Password: Reserved: Unreserved Products: Accessories Clothing Footwear Electronics Books Submit OutputThis will produce the following output −