Explicit Conversion (XAttribute to Nullable(DateTime))

XAttribute Explicit Conversion (XAttribute to Nullable<DateTime>)

 
equivalentCodeEntityop_Explicit(XAttribute attribute)

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.

Exception Condition
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

Universal Windows Platform
Available since 4.5
.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
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