Csharp/CSharp Tutorial/Data Type/System Convert

Convert a System.String into a System.Boolean using System.Convert

<source lang="csharp">using System; using System.Globalization; class MainClass {

 static void Main(string[] args)
 {      
   string theString = "true";
   Console.WriteLine("Convert.ToBoolean(theString)");        
   bool theBool = Convert.ToBoolean(theString);
   Console.WriteLine("Type code string converted to bool is: {0}", theBool.GetTypeCode());
   Console.WriteLine("Value of converted string: {0}", theBool);
 }

}</source>

Convert.ToBoolean(theString)
Type code string converted to bool is: Boolean
Value of converted string: True

Convert.ChangeType

<source lang="csharp">using System; public sealed class ComplexNumber {

   public ComplexNumber( double real, double imaginary ) {
       this.real = real;
       this.imaginary = imaginary;
   }
   private readonly double real;
   private readonly double imaginary;

} public sealed class MainClass {

   static void Main() {
       ComplexNumber num1 = new ComplexNumber( 1.12345678, 2.12345678 );
       string str = (string) Convert.ChangeType( num1, typeof(string) );
   }

}</source>

data type convert

<source lang="csharp">using System; public class MainClass {

   static void Main(string[] args) {
       short shortResult, shortVal = 4;
       int integerVal = 67;
       long longResult;
       float floatVal = 10.5F;
       double doubleResult, doubleVal = 9999.999;
       string stringResult, stringVal = "17";
       bool boolVal = true;
       doubleResult = floatVal * shortVal;
       Console.WriteLine("Implicit, -> double: {0} * {1} -> {2}", floatVal, shortVal, doubleResult);
       shortResult = (short)floatVal;
       Console.WriteLine("Explicit, -> short:  {0} -> {1}", floatVal, shortResult);
       stringResult = Convert.ToString(boolVal) + Convert.ToString(doubleVal);
       Console.WriteLine("Explicit, -> string: \"{0}\" + \"{1}\" -> {2}", boolVal, doubleVal, stringResult);
       longResult = integerVal + Convert.ToInt64(stringVal);
       Console.WriteLine("Mixed,    -> long:   {0} + {1} -> {2}", integerVal, stringVal, longResult);
   }

}</source>

Use System.Convert to convert string to Int16

<source lang="csharp">using System; class MainClass {

   public static void Main(string[] argv)
   {
     int a = System.Convert.ToInt16("1");
     int b = System.Convert.ToInt16("2");
   }

}</source>