Delphi Basics .Net : System.Convert.ToBoolean method

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ToBoolean
Method

Converts data from one data type to a Boolean data type

Convert	Class
System	NameSpace

CF	1.	Function	ToBoolean	( Value : Boolean ) : Boolean; Static;
CF	2.	Function	ToBoolean	( Value : Cardinal ) : Boolean; Static;
CF	3.	Function	ToBoolean	( Value : Byte ) : Boolean; Static;
CF	4.	Function	ToBoolean	( Value : Char ) : Boolean; Static;
CF	5.	Function	ToBoolean	( Value : SmallInt ) : Boolean; Static;
CF	6.	Function	ToBoolean	( Value : ShortInt ) : Boolean; Static;
CF	7.	Function	ToBoolean	( Value : Integer ) : Boolean; Static;
CF	8.	Function	ToBoolean	( Value : Int64 ) : Boolean; Static;
CF	9.	Function	ToBoolean	( Value : UInt64 ) : Boolean; Static;
CF	10.	Function	ToBoolean	( Value : Word ) : Boolean; Static;
CF	11.	Function	ToBoolean	( Value : Single ) : Boolean; Static;
CF	12.	Function	ToBoolean	( Value : Double ) : Boolean; Static;
CF	13.	Function	ToBoolean	( Value : Decimal ) : Boolean; Static;
CF	14.	Function	ToBoolean	( Value : String ) : Boolean; Static;
CF	15.	Function	ToBoolean	( Value : String; FormatProvider : IFormatProvider ) : Boolean; Static;
CF	16.	Function	ToBoolean	( Value : Object ) : Boolean; Static;
CF	17.	Function	ToBoolean	( Value : Object; FormatProvider : IFormatProvider ) : Boolean; Static;

CF : Methods with this mark are Compact Framework Compatible

Description

Attempts to transfer the value from one of the given Value data types to Boolean.

The optional FormatProvider parameter determines the parsing rules and is beyond the scope of this article.

Notes

An exception is thrown if the conversion fails.

Microsoft MSDN Links

System
System.Convert
System.Convert.ToBoolean

A simple example

program Project1;
{$APPTYPE CONSOLE}

var
  myBool : Boolean;
  myStr  : String;

begin
  myStr  := 'true';

  myBool := System.Convert.ToBoolean(myStr);

  Console.WriteLine(myBool.ToString);

  Console.ReadLine;
end.

True