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Csharp Articles
Page 168 of 196
Get the hyperbolic arc-cosine of a floating-point value in C#
To get the hyperbolic arc-cosine of a floating-point value, the code is as follows −Exampleusing System; public class Demo { public static void Main() { float val1 = 0.1f; float val2 = 0.9f; Console.WriteLine("Angle (val1) = "+(MathF.Acosh(val1))); Console.WriteLine("Angle (val2) = "+(MathF.Acosh(val2))); } }OutputThis will produce the following output −Angle (val1) = NaN Angle (val2) = NaNExampleLet us see another example −using System; public class Demo { public static void Main() { float val1 = 5.1f; float val2 = 8.9f; Console.WriteLine("Angle (val1) = "+(MathF.Acosh(val1))); Console.WriteLine("Angle (val2) = "+(MathF.Acosh(val2))); } }OutputThis will produce the following output −Angle (val1) = 2.312634 Angle (val2) = 2.876027
Read MoreOnly return fields which appear a certain number of times using MySQL DISTINCT?
To return fields appearing a certain number of times, the syntax is as follows −select distinct yourColumnName, count(yourColumnName) from yourTableName where yourColumnName LIKE 'J%' group by yourColumnName having count(*) > 1 order by yourColumnName;Let us first create a table −mysql> create table DemoTable1500 -> ( -> Name varchar(20) -> ); Query OK, 0 rows affected (0.86 sec)Insert some records in the table using insert command −Mysql> insert into DemoTable1500 values(‘Adam’); Query OK, 1 row affected (0.23 sec) mysql> insert into DemoTable1500 values('John'); Query OK, 1 row affected (0.09 sec) mysql> insert into DemoTable1500 values('Mike'); Query OK, 1 ...
Read MoreRemove a range of elements from the ArrayList in C#
To remove a range of elements from the ArrayList, the code is as follows −Exampleusing System; using System.Collections; public class Demo { public static void Main(String[] args){ ArrayList list1 = new ArrayList(); list1.Add("A"); list1.Add("B"); list1.Add("C"); list1.Add("D"); list1.Add("E"); list1.Add("F"); list1.Add("G"); list1.Add("H"); list1.Add("I"); Console.WriteLine("Elements in ArrayList1..."); foreach (string res in list1){ Console.WriteLine(res); } ArrayList list2 ...
Read MoreC# Int32 Struct
The Int32 Struct represents a 32-bit signed integer. It is an immutable value type that represents signed integers with values that range from negative 2, 147, 483, 648 through positive 2, 147, 483, 647.Following are the fields of the Int32 Struct −Sr.NoField & Description1MaxValueRepresents the largest possible value of an Int32. This field is constant.2MinValueRepresents the smallest possible value of an Int32. This field is constant.Following are some of the methods of the Int32 Struct −Sr.NoMethod & Description1CompareTo(Int32)Compares this instance to a specified 32-bit signed integer and returns an integer that indicates whether the value of this instance is less ...
Read MoreUri.HexEscape(Char) Method in C#
The Uri.HexEscape() method in C# is used to convert a specified character into its hexadecimal equivalent.SyntaxFollowing is the syntax −public static string HexEscape (char ch);Above, the parameter ch is the character to convert to hexadecimal representation.ExampleLet us now see an example to implement the Uri.HexEscape() method −using System; public class Demo { public static void Main(){ char ch = 'k'; string res = Uri.HexEscape(ch); Console.WriteLine("Hexadecimal Equivalent = "+res); } }OutputThis will produce the following output −Hexadecimal Equivalent = %6BExampleLet us now see another example to implement the Uri.HexEscape() method ...
Read MoreHow to change the WindowTop of the Console in C#?
Use the Console.WindowTop Property to change the WindowTop of the Console in C#.ExampleLet us now see an example −using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; class Demo { public static void Main (string[] args) { Console.InputEncoding = Encoding.ASCII; Console.WriteLine("Input Encoding Scheme = "+Console.InputEncoding); Console.OutputEncoding = Encoding.ASCII; Console.WriteLine("Output Encoding Scheme = "+Console.OutputEncoding); Console.CursorVisible = false; Console.Write("Cursor is Visible? "+ Console.CursorVisible); Console.WindowTop = 40; Console.Write("WindowTop = "+Console.WindowTop); } }OutputThis will produce the following ...
Read MoreUInt32.Equals() Method in C# with Examples
The UInt32.Equals() method in C# returns a value indicating whether this instance is equal to a specified object or UInt32.SyntaxFollowing is the syntax −public override bool Equals (object ob); public bool Equals (uint ob);Above, the parameter ob for the 1st syntax is an object to compare to this instance and the parameter ob for the 2nd syntax is the 32-bit unsigned integer to compare to this instance.ExampleLet us now see an example to implement the UInt32.Equals() method −using System; public class Demo { public static void Main(){ uint val1 = 52; uint val2 ...
Read MoreUInt32.CompareTo() Method in C# with Examples
The UInt32.CompareTo() method in C# is used to compare the current instance to a specified object or UInt32 and returns an indication of their relative values.SyntaxFollowing is the syntax −public int CompareTo (object val); public int CompareTo (uint val;Above, the Val for the 1st syntax is an object to compare. The Val for 2nd syntax is an unsigned integer to compare.The return value is 0 if the current instance is equal to value. It’s less than zero if the current instance is less than Val. The return value is more than zero if the current instance is greater than Val.ExampleLet ...
Read MoreHow to change the WindowLeft of the Console
Use the Console.WindowLeft Property to change the WindowLeft of the Console in C#.ExampleLet us now see an example −using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; class Demo { public static void Main (string[] args) { Console.InputEncoding = Encoding.ASCII; Console.WriteLine("Input Encoding Scheme = "+Console.InputEncoding); Console.OutputEncoding = Encoding.ASCII; Console.WriteLine("Output Encoding Scheme = "+Console.OutputEncoding); Console.CursorVisible = false; Console.Write("Cursor is Visible? "+ Console.CursorVisible); Console.WindowLeft = 50; Console.Write("WindowLeft = "+Console.WindowLeft); } } OutputThis will produce ...
Read MoreHow to change the visibility of the Cursor of Console in C#
To change the visibility of the Cursor, use the Console.CursorVisible property.ExampleLet us see an example −using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; class Demo { public static void Main (string[] args) { Console.BackgroundColor = ConsoleColor. Black; Console.WriteLine("Background color changed = "+Console.BackgroundColor); Console.ForegroundColor = ConsoleColor.White; Console.WriteLine("Foreground color changed = "+Console.ForegroundColor); Console.InputEncoding = Encoding.ASCII; Console.WriteLine("Input Encoding Scheme = "+Console.InputEncoding); Console.OutputEncoding = Encoding.ASCII; Console.WriteLine("Output Encoding Scheme = "+Console.OutputEncoding); Console.CursorVisible = false; ...
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