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XAttribute.Explicit Operator

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

This API is not CLS-compliant. 

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

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

Parameters

attribute
Type: System.Xml.Linq.XAttribute

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

Return Value

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

ExceptionCondition
FormatException

The attribute does not contain a valid DateTime value.

The value space of an attribute or element that contains date and time content is closely related to the dates and times described in ISO 8601. When creating an attribute or element that contains date and time content, the attribute or element values are formatted per the W3C specification. See the W3C specification for more details.

Behavior is lax when casting to a Nullable<T> of DateTime from an attribute or element. Even if the attribute or element value is not formatted exactly per the W3C specification, the value is appropriately converted to a Nullable<T> of DateTime.

This conversion operator uses CultureInfo.InvariantCulture to convert from a DateTime.

The following example creates an attribute with a date and time as content. It then retrieves the value by casting to Nullable<T> of DateTime.

XElement root = new XElement("Root",
    new XAttribute("Att", new DateTime(2006, 10, 6, 12, 30, 0))
);
DateTime? value = (DateTime?)root.Attribute("Att");
Console.WriteLine("Nullable DateTime: value={0}", value == null ? "null" : value.ToString());

This example produces the following output:

Nullable DateTime: value=10/6/2006 12:30:00 PM

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

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