Convert Class in C#

The Convert Class has methods to convert a base data type to another base data type. Let us see some examples −

The Convert.ToBoolean() method in C# is used to convert a specified value to an equivalent Boolean value.

Syntax

Following is the syntax −

public static bool ToBoolean (string val, IFormatProvider provider);

Above, Val is a string that contains the value of either TrueString or FalseString, whereas the provider is an object that supplies culture-specific formatting information.

Example

Let us now see an example to implement the Convert.ToBoolean() method −

 Live Demo

using System;
using System.Globalization;
public class Demo {
   public static void Main(){
      CultureInfo cultures = new CultureInfo("en-US");
      String str = "true";
      Console.WriteLine("Converted bool value...");
      bool res = Convert.ToBoolean(str, cultures);
      Console.Write("{0}", res);
   }
}

Output

This will produce the following output −

Converted bool value...
True

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.

Syntax

Following is the syntax −

public static double ToDouble (string val, IFormatProvider provider);

Above, the value is a string that contains the number to convert, whereas the provider is an object that supplies culture-specific formatting information.

Example

Let us now see an example to implement the Convert.ToDouble() method −

 Live Demo

using System;
using System.Globalization;
public class Demo {
   public static void Main(){
      String val = "876876, 878";
      NumberFormatInfo formatProvider = new NumberFormatInfo();
      formatProvider.NumberDecimalSeparator = ", ";
      formatProvider.NumberGroupSeparator = ".";
      formatProvider.NumberGroupSizes = new int[] { 2 };
      Console.WriteLine("Converted Decimal value...");
      double res = Convert.ToDouble(val, formatProvider);
      Console.Write("{0}", res);
   }
}

Output

This will produce the following output −

Converted Decimal value...
876876.878

The Convert.ToDecimal() method in C# converts the specified string representation of a number to an equivalent decimal number, using the specified culture-specific formatting information.

Output

Following is the syntax −

public static decimal ToDecimal (string val, IFormatProvider provider);

Above, Val is a string that contains a number to convert, whereas the provider is an object that supplies culture-specific formatting information.

Example

Let us now see an example to implement the Convert.ToDecimal() method −

 Live Demo

using System;
using System.Globalization;
public class Demo {
   public static void Main(){
      CultureInfo cultures = new CultureInfo("en-US");
      String val = "8787";
      Console.WriteLine("Converted Decimal value...");
      decimal res = Convert.ToDecimal(val, cultures);
      Console.Write("{0}", res);
   }
}

Output

This will produce the following output −

Converted Decimal value...
8787