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 Shared Function ToBoolean (
	value As Double
) As Boolean

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 Sub ConvertDoubleBool(ByVal doubleVal As Double)
    Dim boolVal As Boolean

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

    'Boolean to Double conversion cannot overflow.
    doubleVal = System.Convert.ToDouble(boolVal)
    System.Console.WriteLine("{0} as a Double is: {1}.", _
                              boolVal, doubleVal)
End Sub

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
Return to top
Show: