IXmlLineInfo.HasLineInfo Method
Microsoft Silverlight will reach end of support after October 2021. Learn more.
Gets a value indicating whether the class can return line information.
Namespace: System.Xml
Assembly: System.Xml (in System.Xml.dll)
Syntax
'Declaration
Function HasLineInfo As Boolean
bool HasLineInfo()
Return Value
Type: System.Boolean
true if LineNumber and LinePosition can be provided; otherwise, false.
Examples
' Create the XML fragment to be parsed.
Dim xmlFrag As String = _
"<book>" & _
"<misc>" & _
"<style>paperback</style>" & _
"<pages>240</pages>" & _
"</misc>" & _
"</book>"
' Create the XmlNamespaceManager.
Dim nsmgr As XmlNamespaceManager = New XmlNamespaceManager(New NameTable())
' Create the XmlParserContext.
Dim context As New XmlParserContext(Nothing, nsmgr, Nothing, XmlSpace.None)
Dim output As New StringBuilder()
' Create the reader.
Using reader As XmlReader = XmlReader.Create(New StringReader(xmlFrag), Nothing, context)
Dim lineInfo As IXmlLineInfo = CType(reader, IXmlLineInfo)
If lineInfo.HasLineInfo() Then
' Parse the XML and display each node.
While reader.Read()
Select Case reader.NodeType
Case XmlNodeType.Element
output.Append(reader.Depth.ToString() + " " + _
lineInfo.LineNumber.ToString() + ", " + _
lineInfo.LinePosition.ToString())
output.AppendLine("<" + reader.Name + ">")
Case XmlNodeType.Text
output.Append(reader.Depth.ToString() + " " + _
lineInfo.LineNumber.ToString() + ", " + _
lineInfo.LinePosition.ToString())
output.AppendLine(" " + reader.Value)
Case XmlNodeType.EndElement
output.Append(reader.Depth.ToString() + " " + _
lineInfo.LineNumber.ToString() + ", " + _
lineInfo.LinePosition.ToString())
output.AppendLine("</" + reader.Name + ">")
End Select
End While
End If
End Using
' Display the output to the TextBlock control
OutputTextBlock.Text = output.ToString()
// Create the XML fragment to be parsed.
string xmlFrag =
@"<book>
<misc>
<style>paperback</style>
<pages>240</pages>
</misc>
</book>";
// Create the XmlNamespaceManager.
XmlNamespaceManager nsmgr = new XmlNamespaceManager(new NameTable());
// Create the XmlParserContext.
XmlParserContext context = new XmlParserContext(null, nsmgr, null, XmlSpace.None);
StringBuilder output = new StringBuilder();
// Create the reader.
using (XmlReader reader = XmlReader.Create(new StringReader(xmlFrag), null, context))
{
IXmlLineInfo lineInfo = ((IXmlLineInfo)reader);
if (lineInfo.HasLineInfo())
{
// Parse the XML and display each node.
while (reader.Read())
{
switch (reader.NodeType)
{
case XmlNodeType.Element:
output.Append(reader.Depth + " " +
lineInfo.LineNumber + ", " +
lineInfo.LinePosition);
output.AppendLine("<" + reader.Name + ">");
break;
case XmlNodeType.Text:
output.Append(reader.Depth + " " +
lineInfo.LineNumber + ", " +
lineInfo.LinePosition);
output.AppendLine(" " + reader.Value);
break;
case XmlNodeType.EndElement:
output.Append(reader.Depth + " " +
lineInfo.LineNumber + ", " +
lineInfo.LinePosition);
output.AppendLine("</" + reader.Name + ">");
break;
}
}
}
// Close the reader.
}
// Display the output to the TextBlock control
OutputTextBlock.Text = output.ToString();
Version Information
Silverlight
Supported in: 5, 4, 3
Silverlight for Windows Phone
Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0
XNA Framework
Supported in: Xbox 360, Windows Phone OS 7.0
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.