XAttribute Explicit Conversion (XAttribute^ to Nullable<Boolean>)
Cast the value of this XAttribute to a Nullable<T> of Boolean.
This API is not CLS-compliant.
Assembly: System.Xml.Linq (in System.Xml.Linq.dll)
Parameters
- attribute
-
Type:
System.Xml.Linq::XAttribute^
The XAttribute to cast to Nullable<T> of Boolean.
Return Value
Type: System::Nullable<Boolean>A Nullable<T> of Boolean that contains the content of this XAttribute.
| Exception | Condition |
|---|---|
| FormatException | The attribute does not contain a valid Boolean value. |
When converting to Boolean from an attribute or element, allowed values are "0", "1", and any string that produces "true" or "false" after trimming and conversion to lower case.
The following example creates an attribute with Boolean content. It then retrieves the value by casting to Nullable<T> of Boolean.
This example produces the following output:
Nullable boolean: BoolValue1=True Nullable boolean: BoolValue2=False
Available since 8
.NET Framework
Available since 3.5
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