Csharp Articles - Page 43 of 258

Let us first create a table −mysql> create table DemoTable    -> (    -> StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY,    -> StudentMarks int    -> ); Query OK, 0 rows affected (0.58 sec)Insert some records in the table using insert command. We have also inserted duplicate records −mysql> insert into DemoTable(StudentMarks) values(98); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable(StudentMarks) values(98); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable(StudentMarks) values(78); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable(StudentMarks) values(78); Query OK, 1 row affected (0.29 sec) mysql> insert ... Read More

To insert data from one table to another, use the INSERT INTO SELECT statement. Let us first create a table −mysql> create table DemoTable1    -> (    -> Id int,    -> FirstName varchar(20)    -> ); Query OK, 0 rows affected (0.49 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1 values(101, 'Adam'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable1 values(102, 'John'); Query OK, 1 row affected (0.11 sec)Display all records from the table using select statement −mysql> select *from DemoTable1;This will produce the following output −+------+-----------+ | Id   ... Read More

To get the HashCode for the current UInt32 instance, the code is as follows −Example Live Demousing System; public class Demo {    public static void Main() {       uint val1 = 100;       uint val2 = UInt16.MinValue;       Console.WriteLine("HashCode for val1 = "+val1.GetHashCode());       Console.WriteLine("HashCode for val2 = "+val2.GetHashCode());    } }OutputThis will produce the following output −HashCode for val1 = 100 HashCode for val2 = 0ExampleLet us see another example − Live Demousing System; public class Demo {    public static void Main() {       uint val1 = 50;   ... Read More

To get the angle whose sine is float value argument, the code is as follows −Exampleusing System; public class Demo {    public static void Main() {       float val1 = 0.1f;       float val2 = 8.9f;       Console.WriteLine("Angle (val1) = "+(MathF.Asin(val1)));       Console.WriteLine("Angle (val2) = "+(MathF.Asin(val2)));    } }OutputThis will produce the following output −Angle (val1) = 0.1001674 Angle (val2) = NaNExampleLet us see another example −using System; public class Demo {    public static void Main() {       float val1 = 1.2f;       float val2 = ... Read More

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

To check whether the specified character has a surrogate code, the code is as follows −Example Live Demousing System; public class Demo {    public static void Main() {       string str = new String(new char[] { 'k', 'm', 'g', 't', '\uD800' });       bool res = Char.IsSurrogate(str, 4);       if (res)          Console.WriteLine("Contains Surrogate value!");       else          Console.WriteLine("Does not contain Surrogate value!");    } }OutputThis will produce the following output −Contains Surrogate value!ExampleLet us see another example − Live Demousing System; public class Demo {   ... Read More

To get synchronize access to the StringDictionary, the code is as follows −Example Live Demousing System; using System.Collections; using System.Collections.Specialized; public class Demo {    public static void Main(){       StringDictionary strDict = new StringDictionary ();       strDict.Add("A", "Books");       strDict.Add("B", "Electronics");       strDict.Add("C", "Appliances");       strDict.Add("D", "Pet Supplies");       strDict.Add("E", "Clothing");       strDict.Add("F", "Footwear");       Console.WriteLine("StringDictionary key-value pairs...");       foreach(DictionaryEntry de in strDict) {          Console.WriteLine(de.Key + " " + de.Value);       }       Console.WriteLine("Value ... Read More

To get synchronize access to the StringCollection, the code is as follows −Example Live Demousing System; using System.Collections.Specialized; public class Demo {    public static void Main() {       StringCollection stringCol = new StringCollection();       String[] arr = new String[] { "100", "200", "300", "400", "500" };       Console.WriteLine("Array elements...");       foreach (string res in arr) {          Console.WriteLine(res);       }       stringCol.AddRange(arr);       Console.WriteLine("Total number of elements = "+stringCol.Count);       stringCol.RemoveAt(3);       Console.WriteLine("Total number of elements now = "+stringCol.Count); ... Read More

To get the types nested within the current Type, the code is as follows −Example Live Demousing System; public class Demo {    public static void Main() {       Type type1 = typeof(Subject);       try {          Type[] type2 = type1.GetNestedTypes();          Console.WriteLine("Nested Types...");          for (int i = 0; i < type2.Length; i++)             Console.WriteLine("{0} ", type2[i]);       }       catch (ArgumentNullException e) {          Console.Write("{0}", e.GetType(), e.Message);       }    } } ... Read More

To get a specific type nested within the current Type, the code is as follows −Example Live Demousing System; public class Demo {    public static void Main() {       Type type1 = typeof(Subject);       try {          Type type2 = type1.GetNestedType("AdvSubject");          Console.Write("NestedType = "+ type2);       }       catch (ArgumentNullException e) {          Console.Write("{0}", e.GetType(), e.Message);       }    } } public class Subject {    public class BasicSubject {       //    }    public class AdvSubject ... Read More