XElement Explicit Conversion (XElement^ to Nullable<Boolean>)
Cast the value of this XElement to a Nullable<T> of Boolean.
This API is not CLS-compliant.
Assembly: System.Xml.Linq (in System.Xml.Linq.dll)
Parameters
- element
-
Type:
System.Xml.Linq::XElement^
The XElement to cast to Nullable<T> of Boolean.
Return Value
Type: System::Nullable<Boolean>A Nullable<T> of Boolean that contains the content of this XElement.
| Exception | Condition |
|---|---|
| FormatException | The element does not contain a valid Boolean value. |
When converting to Nullable<T> of 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 element with boolean content. It then retrieves the value by casting to Nullable<T> of Boolean.
This example produces the following output:
Nullable Boolean: value1=True Nullable Boolean: value2=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