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Convert::ToBoolean Method (Double)

.NET Framework (current version)
 

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

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

C#
C++
F#
VB
Copy 
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.

C#
C++
VB
Copy 
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 );
   }

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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