This documentation is archived and is not being maintained.

Convert::ToBoolean Method (Double)

Converts the value of the specified double-precision floating-point number to an equivalent Boolean value.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

public:
static bool ToBoolean(
	double value
)

Parameters

value
Type: System::Double
The double-precision floating-point number to convert.

Return Value

Type: System::Boolean
true if value is not zero; otherwise, false.

The following example converts a Boolean to a Double and a Double to a Boolean value.


public:
   void ConvertDoubleBool( double doubleVal )
   {
      bool boolVal;

      // Double to bool conversion cannot overflow.
      boolVal = System::Convert::ToBoolean( doubleVal );
      System::Console::WriteLine( " {0} as a Boolean is: {1}.",
         doubleVal, boolVal );

      // bool to double conversion cannot overflow.
      doubleVal = System::Convert::ToDouble( boolVal );
      System::Console::WriteLine( " {0} as a double is: {1}.",
         boolVal, doubleVal );
   }


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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