Convert.ToBoolean Method (Object, IFormatProvider)
Converts the value of the specified object to an equivalent Boolean value, using the specified culture-specific formatting information.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- value
-
Type:
System.Object
An object that implements the IConvertible interface, or null.
- provider
-
Type:
System.IFormatProvider
An object that supplies culture-specific formatting information.
Return Value
Type: System.Booleantrue or false, which reflects the value returned by invoking the IConvertible.ToBoolean method for the underlying type of value. If value is null, the method returns false.
| Exception | Condition |
|---|---|
| FormatException | value is a string that does not equal TrueString or FalseString. |
| InvalidCastException | value does not implement the IConvertible interface. -or- The conversion of value to a Boolean is not supported. |
provider enables the user to specify culture-specific conversion information about the contents of value. The base types ignore the provider parameter; however, the parameter may be used if value is a user-defined type that implements the IConvertible interface.
The following example defines a class that implements IConvertible and a class that implements IFormatProvider. Objects of the class that implements IConvertible hold an array of Double values. An object of each class is passed to the ToBoolean(Object, IFormatProvider) method. This method returns true if any of the non-discarded array values are non-zero. The IFormatProvider object determines how elements are discarded for this calculation.
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