XmlReaderSettings.MaxCharactersInDocument Property
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Gets or sets a value indicating the maximum allowable number of characters XML document. A zero (0) value means no limits on the size of the XML document. A non-zero value specifies the maximum size, in characters.
Assembly: System.Xml (in System.Xml.dll)
Property Value
Type: System.Int64The maximum allowable number of characters in an XML document. The default is 0.
A zero (0) value means no limits on the number of characters in the parsed document. A non-zero value specifies the maximum number of characters that can be parsed.
The maximum character count for the document includes the count of characters that result from expanded entities.
If the reader attempts to read a document with a size that exceeds this property, an XmlException will be thrown.
This property allows you to mitigate denial of service attacks where the attacker submits extremely large XML documents. By limiting the size of a document, you can detect the attack and recover reliably.
Dim markup As String = "<Root>Content</Root>" Dim settings As New XmlReaderSettings() settings.MaxCharactersInDocument = 10 Try Using reader As XmlReader = XmlReader.Create(New StringReader(markup), settings) While reader.Read() End While End Using Catch ex As XmlException OutputTextBlock.Text = ex.Message End Try