This documentation is archived and is not being maintained.

XAttribute.Explicit Operator

Cast the value of this XAttribute to a UInt64.

This API is not CLS-compliant. 

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

public static explicit operator ulong (
	XAttribute attribute


Type: System.Xml.Linq.XAttribute

The XAttribute to cast to UInt64.

Return Value

Type: System.UInt64
A UInt64 that contains the content of this XAttribute.


The attribute does not contain a valid UInt64 value.


The attribute parameter is null.

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

XElement root = new XElement("Root",
    new XAttribute("Att", 1844674407370955161)
ulong value = (ulong)root.Attribute("Att");
Console.WriteLine("value={0}", value);

This example produces the following output:


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