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XPathItem.ValueAsLong Property

When overridden in a derived class, gets the item's value as an Int64.

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

public abstract long ValueAsLong { get; }

Property Value

Type: System.Int64
The item's value as an Int64.


The item's value is not in the correct format for the Int64 type.


The attempted cast to Int64 is not valid.


The attempted cast resulted in an overflow.

The ValueAsLong property attempts to convert the value of the item to the .NET Framework version 2.0 Int64 type according to the XPath 2.0 rules for casting the item's type.

For more information about type support in the System.Xml namespace, see Type Support in the System.Xml Classes.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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