Checks whether this SVG document is the global null instance.
public bool IsNull { get; }
public abstract boolean isNull();
public:
property bool IsNull
{
bool get()
}
IsNull # get (ISvgDocument)
true if this ISvgDocument
object is the global null instance; otherwise, false.
In some instances, an ISvgDocument object that is not initialized (is null) is required. For instance, when serializing SVG documents to a system that does not support a true null
value. In this case, SvgDocument.NullInstance can be used to represent an SvgDocument
that has not been initialized (but is not null
). IsNull can be used to test whether a SvgDocument
object is the null instance.
SvgDocument.NullInstance is a global object and calling any other member besides IsNull will throw an exception. The one exception is calling Dispose
which will be ignored.
Note that calling svgDocumentObject.IsNull
is the equivalent of svgDocumentObject == SvgDocument.NullInstance
.
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