Export (0) Print
Expand All

XAttribute.Explicit Operator

Cast the value of this XAttribute to a Nullable<T> of UInt64.

This API is not CLS-compliant. 

Namespace:  System.Xml.Linq
Assembly:  System.Xml.Linq (in System.Xml.Linq.dll)

public static explicit operator Nullable<ulong> (
	XAttribute attribute
)

Parameters

attribute
Type: System.Xml.Linq.XAttribute

The XAttribute to cast to a Nullable<T> of UInt64.

Return Value

Type: System.Nullable<UInt64>
A Nullable<T> of UInt64 that contains the content of this XAttribute.

ExceptionCondition
FormatException

The attribute does not contain a valid UInt64 value.

The following example creates an attribute with unsigned long integer content. It then retrieves the value by casting to Nullable<T> of UInt64.

XElement root = new XElement("Root", 
    new XAttribute("Att", 9223372036854775807)
);
ulong? value = (ulong?)root.Attribute("Att");
Console.WriteLine("Nullable ulong: value={0}", value == null ? "null" : value.ToString());

This example produces the following output:

Nullable ulong: value=9223372036854775807

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5

.NET Compact Framework

Supported in: 3.5

XNA Framework

Supported in: 3.0

Community Additions

ADD
Show:
© 2014 Microsoft