The Network Node control supports data in the form of an IEnumerable, but that data can easily be read from a file. The walkthrough demonstrates how to load data to the Network Node control from a GML file.
Following is a preview of the final result:
This article assumes you have already read the article on Adding the Network Node Control, and uses the code from that walkthrough as a starting point. Overview Following is a conceptual overview of the implementation:
Configuring the Node layout
Loading the GML data
Handling the DownloadStringCompleted event
(Optional) Verifying the result
Load the GML data .
The GML Parser we provide uses a data model as follows:
In XAML:
<Grid x:Name="LayoutRoot" Background="White">
<ig:XamNetworkNode x:Name="xnn">
<ig:XamNetworkNode.GlobalNodeLayouts>
<ig:NetworkNodeNodeLayout
TargetTypeName = "GmlNode"
DisplayMemberPath = "Id"
ToolTipMemberPath = "Label"
ConnectionsMemberPath = "Connections"
ConnectionTargetMemberPath = "Target"
/>
</ig:XamNetworkNode.GlobalNodeLayouts>
</ig:XamNetworkNode>
</Grid>In the application constructor, after calling InitializeComponent, use a WebClient instance to load the GML data as a string. For your convenience, use the provided GML file: Graph2.gml.
In C#:
public MainPage()
{
InitializeComponent();
var webClient = new WebClient();
webClient.DownloadStringCompleted += GmlFileLoaded;
webClient.DownloadStringAsync(new Uri("Graph2.gml", UriKind.RelativeOrAbsolute));
}In Visual Basic:
Public Sub New()
InitializeComponent()
Dim webClient = New WebClient()
AddHandler webClient.DownloadStringCompleted, AddressOf GmlFileLoaded
webClient.DownloadStringAsync(New Uri("Graph2.gml", UriKind.RelativeOrAbsolute))
End SubHandle the DownloadStringCompleted event .
The handler is configured to parse the file data and set the Network Node control’s ItemsSource property:
In C#:
private void GmlFileLoaded(object sender, DownloadStringCompletedEventArgs e)
{
var stream = new StringReader(e.Result);
var nodes = new GmlParser().Parse(stream);
xnn.ItemsSource = nodes;
}In Visual Basic:
Private Sub GmlFileLoaded(sender As Object, e As DownloadStringCompletedEventArgs)
Dim stream = New StringReader(e.Result)
Dim nodes = New GmlParser().Parse(stream)
xnn.ItemsSource = nodes
End SubThe Result property of the DownloadStringCompletedEventArgs holds the GML data formatted as a string, and GmlParser is a class that we have provided. GmlParser.Parse takes a TextReader object, parses the string, then returns an IEnumerable. GmlNode and other utility classes are defined in GmlParser below
(Optional) Verify the result .
To verify your implementation, run the application. At this point, data from Graph2.gml will be displayed as shown in Figure 1 above.
The following code listings show you the full example implemented in context.
In XAML:
<UserControl x:Class="xamNetworkNode_LoadingGmlData.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:ig="http://schemas.infragistics.com/xaml"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="400">
<Grid x:Name="LayoutRoot" Background="White">
<ig:XamNetworkNode x:Name="xnn">
<ig:XamNetworkNode.GlobalNodeLayouts>
<ig:NetworkNodeNodeLayout
TargetTypeName = "GmlNode"
DisplayMemberPath = "Id"
ToolTipMemberPath = "Label"
ConnectionsMemberPath = "Connections"
ConnectionTargetMemberPath = "Target"
/>
</ig:XamNetworkNode.GlobalNodeLayouts>
</ig:XamNetworkNode>
</Grid>
</UserControl>In C#:
using System;
using System.IO;
using System.Net;
using System.Windows.Controls;
using xamNetworkNode_LoadingGmlData.Resources;
namespace xamNetworkNode_LoadingGmlData
{
public partial class MainPage : UserControl
{
public MainPage()
{
InitializeComponent();
var webClient = new WebClient();
webClient.DownloadStringCompleted += GmlFileLoaded;
webClient.DownloadStringAsync(new Uri("Graph2.gml", UriKind.RelativeOrAbsolute));
}
private void GmlFileLoaded(object sender, DownloadStringCompletedEventArgs e)
{
var stream = new StringReader(e.Result);
var nodes = new GmlParser().Parse(stream);
xnn.ItemsSource = nodes;
}
}
}In Visual Basic:
Imports System
Imports System.IO
Imports System.Net
Imports System.Windows.Controls
Imports xamNetworkNode_LoadingGmlData.Resources
Namespace xamNetworkNode_LoadingGmlData
Public Partial Class MainPage
Inherits UserControl
Public Sub New()
InitializeComponent()
Dim webClient = New WebClient()
AddHandler webClient.DownloadStringCompleted, AddressOf GmlFileLoaded
webClient.DownloadStringAsync(New Uri("Graph2.gml", UriKind.RelativeOrAbsolute))
End Sub
Private Sub GmlFileLoaded(sender As Object, e As DownloadStringCompletedEventArgs)
Dim stream = New StringReader(e.Result)
Dim nodes = New GmlParser().Parse(stream)
xnn.ItemsSource = nodes
End Sub
End Class
End NamespaceIn C#:
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
/*
* This parser class is based on C code released by Universitat Passau under the Lesser General Public License.
* http://www.fim.uni-passau.de/en/fim/faculty/chairs/theoretische-informatik/projects.html
*
* This class is therefore distributed under the same license.
*/
namespace xamNetworkNode_LoadingGmlData.Resources
{
public class GmlNode
{
public int Id { get; set; }
public string Label { get; set; }
public IList<GmlConnection> Connections { get; set; }
public GmlNode()
{
Connections = new List<GmlConnection>();
}
}
public class GmlConnection
{
public GmlNode Target { get; set; }
public string Label { get; set; }
}
public class GmlParser
{
private List<GmlNode> _nodes;
public IEnumerable<GmlNode> Parse(TextReader reader)
{
var scanner = new GmlScanner();
string propertyKey = null;
GmlConnection connection = null;
var lastElement = 0;
_nodes = new List<GmlNode>();
foreach (var token in scanner.GetTokens(reader))
{
switch (token.Type)
{
case GmlTokenType.Key:
switch (token.Data)
{
case "node":
_nodes.Add(new GmlNode());
lastElement = 1;
break;
case "edge":
connection = new GmlConnection();
lastElement = 2;
break;
case "id":
case "label":
case "source":
case "target":
if (lastElement > 0)
{
propertyKey = token.Data;
}
else
{
propertyKey = null;
}
break;
default:
lastElement = 0;
break;
}
break;
case GmlTokenType.Int:
if (propertyKey != null)
{
switch (propertyKey)
{
case "id":
if (lastElement == 1)
{
_nodes[_nodes.Count - 1].Id = Convert.ToInt32(token.Data);
}
break;
case "source":
var sourceId = Convert.ToInt32(token.Data);
FindNodeById(sourceId).Connections.Add(connection);
break;
case "target":
var targetId = Convert.ToInt32(token.Data);
connection.Target = FindNodeById(targetId);
break;
}
}
break;
case GmlTokenType.String:
if (propertyKey == "label")
{
if (lastElement == 1)
{
_nodes[_nodes.Count - 1].Label = token.Data;
}
else if (lastElement == 2)
{
connection.Label = token.Data;
}
}
break;
}
}
return _nodes;
}
private GmlNode FindNodeById(int id)
{
return _nodes.First(node => node.Id == id);
}
}
public class GmlScanner
{
private static readonly string[] IsoTable = { " ", "¡", "¢", "£", "¤", "¥", "¦", "§", "¨", "©", "ª", "«", "¬", "­", "®", "¯", "°", "±", "²", "³", "´", "µ", "¶", "·", "¸", "¹", "º", "»", "¼", "½", "¾", "¿", "À", "Á", "Â", "Ã", "Ä", "Å", "Æ", "Ç", "È", "É", "Ê", "Ë", "Ì", "Í", "Î", "Ï", "Ð", "Ñ", "Ò", "Ó", "Ô", "Õ", "Ö", "×", "Ø", "Ù", "Ú", "Û", "Ü", "Ý", "Þ", "ß", "à", "á", "â", "ã", "ä", "å", "æ", "ç", "è", "é", "ê", "ë", "ì", "í", "î", "ï", "ð", "ñ", "ò", "ó", "ô", "õ", "ö", "÷", "ø", "ù", "ú", "û", "ü", "ý", "þ", "ÿ" };
private static int DecodeIsoChar(string str, int len)
{
int i;
int ret = '&';
if (string.Compare(str, 0, """, 0, len) == 0)
{
return 34;
}
if (string.Compare(str, 0, "&", 0, len) == 0)
{
return 38;
}
if (string.Compare(str, 0, "<", 0, len) == 0)
{
return 60;
}
if (string.Compare(str, 0, ">", 0, len) == 0)
{
return 62;
}
for (i = 0; i < 96; i++)
{
if (string.Compare(str, 0, IsoTable[i], 0, len) == 0)
{
ret = i + 160;
break;
}
}
return ret;
}
public IEnumerable<GmlToken> GetTokens(TextReader reader)
{
var line = 1;
var column = 1;
var sb = new StringBuilder();
var i = reader.Peek();
while (i > -1)
{
var c = (char)i;
if (char.IsWhiteSpace(c))
{
if (c == '\n')
{
line++;
column = 1;
}
else
{
column++;
}
reader.Read();
}
else
{
int previousLine;
int previousColumn;
if (char.IsDigit(c) || c == '.' || c == '+' || c == '-')
{
var isDouble = false;
previousLine = line;
previousColumn = column;
do
{
if (c == '.')
{
if (isDouble)
{
throw new GmlParseException(line, column);
}
isDouble = true;
}
sb.Append(c);
column++;
reader.Read();
c = (char)reader.Peek();
} while (char.IsDigit(c) || c == '.');
if (!char.IsWhiteSpace(c))
{
throw new GmlParseException(line, column);
}
if (c == '\r' || c == '\n')
{
line++;
column = 1;
}
if (isDouble)
{
yield return new GmlToken(GmlTokenType.Double, previousLine, previousColumn, sb.ToString());
}
else
{
yield return new GmlToken(GmlTokenType.Int, previousLine, previousColumn, sb.ToString());
}
}
else if (char.IsLetter(c) || c == '_')
{
previousLine = line;
previousColumn = column;
do
{
sb.Append(c);
column++;
reader.Read();
c = (char)reader.Peek();
} while (char.IsLetterOrDigit(c) || c == '_');
if (c == '\r' || c == '\n')
{
line++;
column = 1;
}
if (!char.IsWhiteSpace(c))
{
throw new GmlParseException(line, column);
}
yield return new GmlToken(GmlTokenType.Key, previousLine, previousColumn, sb.ToString());
}
else
{
previousLine = line;
previousColumn = column;
switch (c)
{
case '#':
do
{
reader.Read();
c = (char)reader.Peek();
} while (c != '\r' && c != '\n' && c != -1);
line++;
column = 1;
break;
case '[':
line++;
reader.Read();
yield return new GmlToken(GmlTokenType.LBracket, previousLine, previousColumn);
break;
case ']':
line++;
reader.Read();
yield return new GmlToken(GmlTokenType.RBracket, previousLine, previousColumn);
break;
case '"':
column++;
reader.Read();
c = (char)reader.Peek();
while (c != '"')
{
if (c == '&')
{
var iso = new StringBuilder(8);
while (c != ';')
{
if (c == '"' || c == -1)
{
iso.Clear();
break;
}
if (iso.Length < 8)
{
iso.Append(c);
}
reader.Read();
c = (char)reader.Peek();
}
if (iso.Length == 8)
{
c = '&';
}
else
{
iso.Append(";");
c = (char)DecodeIsoChar(iso.ToString(), iso.Length);
}
}
sb.Append(c);
column++;
reader.Read();
c = (char)reader.Peek();
if (c == -1)
{
throw new GmlParseException(line, column);
}
if (c == '\r' || c == '\n')
{
line++;
column = 1;
}
}
reader.Read();
yield return new GmlToken(GmlTokenType.String, previousLine, previousColumn, sb.ToString());
break;
default:
throw new GmlParseException(line, column);
}
}
}
i = reader.Peek();
sb.Clear();
}
}
}
public class GmlParseException : Exception
{
private readonly int _line;
private readonly int _column;
/// <summary>
/// Initializes a new instance of the <see cref="T:System.Exception"/> class.
/// </summary>
public GmlParseException(int line, int column)
{
_line = line;
_column = column;
}
/// <summary>
/// Initializes a new instance of the <see cref="T:System.Exception"/> class with a specified error message.
/// </summary>
/// <param name="message">The message that describes the error. </param>
/// <param name="line"></param>
/// <param name="column"></param>
public GmlParseException(string message, int line, int column)
: base(message)
{
_line = line;
_column = column;
}
/// <summary>
/// Initializes a new instance of the <see cref="T:System.Exception"/> class with a specified error message and a reference to the inner exception that is the cause of this exception.
/// </summary>
/// <param name="message">The error message that explains the reason for the exception. </param><param name="innerException">The exception that is the cause of the current exception, or a null reference (Nothing in Visual Basic) if no inner exception is specified. </param>
/// <param name="line"></param>
/// <param name="column"></param>
public GmlParseException(string message, Exception innerException, int line, int column)
: base(message, innerException)
{
_line = line;
_column = column;
}
public int Line
{
get { return _line; }
}
public int Column
{
get { return _column; }
}
}
public enum GmlTokenType
{
Key,
Int,
Double,
String,
LBracket,
RBracket
}
public class GmlToken
{
public GmlTokenType Type { get; private set; }
public string Data { get; private set; }
public int Line { get; private set; }
public int Column { get; private set; }
public GmlToken(GmlTokenType type, int line, int column, string data)
{
Type = type;
Data = data;
Line = line;
Column = column;
}
public GmlToken(GmlTokenType type, int line, int column)
: this(type, line, column, null)
{
}
}
}In Visual Basic:
Imports System
Imports System.Collections.Generic
Imports System.IO
Imports System.Linq
Imports System.Text
'
' * This parser class is based on C code released by Universitat Passau under the Lesser General Public License.
' * http://www.fim.uni-passau.de/en/fim/faculty/chairs/theoretische-informatik/projects.html
' *
' * This class is therefore distributed under the same license.
'
Namespace xamNetworkNode_LoadingGmlData.Resources
Public Class GmlNode
Public Property Id() As Integer
Get
Return m_Id
End Get
Set
m_Id = Value
End Set
End Property
Private m_Id As Integer
Public Property Label() As String
Get
Return m_Label
End Get
Set
m_Label = Value
End Set
End Property
Private m_Label As String
Public Property Connections() As IList(Of GmlConnection)
Get
Return m_Connections
End Get
Set
m_Connections = Value
End Set
End Property
Private m_Connections As IList(Of GmlConnection)
Public Sub New()
Connections = New List(Of GmlConnection)()
End Sub
End Class
Public Class GmlConnection
Public Property Target() As GmlNode
Get
Return m_Target
End Get
Set
m_Target = Value
End Set
End Property
Private m_Target As GmlNode
Public Property Label() As String
Get
Return m_Label
End Get
Set
m_Label = Value
End Set
End Property
Private m_Label As String
End Class
Public Class GmlParser
Private _nodes As List(Of GmlNode)
Public Function Parse(reader As TextReader) As IEnumerable(Of GmlNode)
Dim scanner = New GmlScanner()
Dim propertyKey As String = Nothing
Dim connection As GmlConnection = Nothing
Dim lastElement = 0
_nodes = New List(Of GmlNode)()
For Each token As var In scanner.GetTokens(reader)
Select Case token.Type
Case GmlTokenType.Key
Select Case token.Data
Case "node"
_nodes.Add(New GmlNode())
lastElement = 1
Exit Select
Case "edge"
connection = New GmlConnection()
lastElement = 2
Exit Select
Case "id", "label", "source", "target"
If lastElement > 0 Then
propertyKey = token.Data
Else
propertyKey = Nothing
End If
Exit Select
Case Else
lastElement = 0
Exit Select
End Select
Exit Select
Case GmlTokenType.Int
If propertyKey IsNot Nothing Then
Select Case propertyKey
Case "id"
If lastElement = 1 Then
_nodes(_nodes.Count - 1).Id = Convert.ToInt32(token.Data)
End If
Exit Select
Case "source"
Dim sourceId = Convert.ToInt32(token.Data)
FindNodeById(sourceId).Connections.Add(connection)
Exit Select
Case "target"
Dim targetId = Convert.ToInt32(token.Data)
connection.Target = FindNodeById(targetId)
Exit Select
End Select
End If
Exit Select
Case GmlTokenType.[String]
If propertyKey = "label" Then
If lastElement = 1 Then
_nodes(_nodes.Count - 1).Label = token.Data
ElseIf lastElement = 2 Then
connection.Label = token.Data
End If
End If
Exit Select
End Select
Next
Return _nodes
End Function
Private Function FindNodeById(id As Integer) As GmlNode
Return _nodes.First(Function(node) node.Id = id)
End Function
End Class
Public Class GmlScanner
Private Shared ReadOnly IsoTable As String() = {" ", "¡", "¢", "£", "¤", "¥", _
"¦", "§", "¨", "©", "ª", "«", _
"¬", "­", "®", "¯", "°", "±", _
"²", "³", "´", "µ", "¶", "·", _
"¸", "¹", "º", "»", "¼", "½", _
"¾", "¿", "À", "Á", "Â", "Ã", _
"Ä", "Å", "Æ", "Ç", "È", "É", _
"Ê", "Ë", "Ì", "Í", "Î", "Ï", _
"Ð", "Ñ", "Ò", "Ó", "Ô", "Õ", _
"Ö", "×", "Ø", "Ù", "Ú", "Û", _
"Ü", "Ý", "Þ", "ß", "à", "á", _
"â", "ã", "ä", "å", "æ", "ç", _
"è", "é", "ê", "ë", "ì", "í", _
"î", "ï", "ð", "ñ", "ò", "ó", _
"ô", "õ", "ö", "÷", "ø", "ù", _
"ú", "û", "ü", "ý", "þ", "ÿ"}
Private Shared Function DecodeIsoChar(str As String, len As Integer) As Integer
Dim i As Integer
Dim ret As Integer = "&"C
If String.Compare(str, 0, """, 0, len) = 0 Then
Return 34
End If
If String.Compare(str, 0, "&", 0, len) = 0 Then
Return 38
End If
If String.Compare(str, 0, "<", 0, len) = 0 Then
Return 60
End If
If String.Compare(str, 0, ">", 0, len) = 0 Then
Return 62
End If
For i = 0 To 95
If String.Compare(str, 0, IsoTable(i), 0, len) = 0 Then
ret = i + 160
Exit For
End If
Next
Return ret
End Function
Public Function GetTokens(reader As TextReader) As IEnumerable(Of GmlToken)
Dim line = 1
Dim column = 1
Dim sb = New StringBuilder()
Dim i = reader.Peek()
While i > -1
Dim c = ChrW(i)
If Char.IsWhiteSpace(c) Then
If c = ControlChars.Lf Then
line += 1
column = 1
Else
column += 1
End If
reader.Read()
Else
Dim previousLine As Integer
Dim previousColumn As Integer
If Char.IsDigit(c) OrElse c = "."C OrElse c = "+"C OrElse c = "-"C Then
Dim isDouble = False
previousLine = line
previousColumn = column
Do
If c = "."C Then
If isDouble Then
Throw New GmlParseException(line, column)
End If
isDouble = True
End If
sb.Append(c)
column += 1
reader.Read()
c = ChrW(reader.Peek())
Loop While Char.IsDigit(c) OrElse c = "."C
If Not Char.IsWhiteSpace(c) Then
Throw New GmlParseException(line, column)
End If
If c = ControlChars.Cr OrElse c = ControlChars.Lf Then
line += 1
column = 1
End If
If isDouble Then
yield Return New GmlToken(GmlTokenType.[Double], previousLine, previousColumn, sb.ToString())
Else
yield Return New GmlToken(GmlTokenType.Int, previousLine, previousColumn, sb.ToString())
End If
ElseIf Char.IsLetter(c) OrElse c = "_"C Then
previousLine = line
previousColumn = column
Do
sb.Append(c)
column += 1
reader.Read()
c = ChrW(reader.Peek())
Loop While Char.IsLetterOrDigit(c) OrElse c = "_"C
If c = ControlChars.Cr OrElse c = ControlChars.Lf Then
line += 1
column = 1
End If
If Not Char.IsWhiteSpace(c) Then
Throw New GmlParseException(line, column)
End If
yield Return New GmlToken(GmlTokenType.Key, previousLine, previousColumn, sb.ToString())
Else
previousLine = line
previousColumn = column
Select Case c
Case "#"C
Do
reader.Read()
c = ChrW(reader.Peek())
Loop While c <> ControlChars.Cr AndAlso c <> ControlChars.Lf AndAlso c <> -1
line += 1
column = 1
Exit Select
Case "["C
line += 1
reader.Read()
yield Return New GmlToken(GmlTokenType.LBracket, previousLine, previousColumn)
Exit Select
Case "]"C
line += 1
reader.Read()
yield Return New GmlToken(GmlTokenType.RBracket, previousLine, previousColumn)
Exit Select
Case """"C
column += 1
reader.Read()
c = ChrW(reader.Peek())
While c <> """"C
If c = "&"C Then
Dim iso = New StringBuilder(8)
While c <> ";"C
If c = """"C OrElse c = -1 Then
iso.Clear()
Exit While
End If
If iso.Length < 8 Then
iso.Append(c)
End If
reader.Read()
c = ChrW(reader.Peek())
End While
If iso.Length = 8 Then
c = "&"C
Else
iso.Append(";")
c = ChrW(DecodeIsoChar(iso.ToString(), iso.Length))
End If
End If
sb.Append(c)
column += 1
reader.Read()
c = ChrW(reader.Peek())
If c = -1 Then
Throw New GmlParseException(line, column)
End If
If c = ControlChars.Cr OrElse c = ControlChars.Lf Then
line += 1
column = 1
End If
End While
reader.Read()
yield Return New GmlToken(GmlTokenType.[String], previousLine, previousColumn, sb.ToString())
Exit Select
Case Else
Throw New GmlParseException(line, column)
End Select
End If
End If
i = reader.Peek()
sb.Clear()
End While
End Function
End Class
Public Class GmlParseException
Inherits Exception
Private ReadOnly _line As Integer
Private ReadOnly _column As Integer
''' <summary>
''' Initializes a new instance of the <see cref="T:System.Exception"/> class.
''' </summary>
Public Sub New(line As Integer, column As Integer)
_line = line
_column = column
End Sub
''' <summary>
''' Initializes a new instance of the <see cref="T:System.Exception"/> class with a specified error message.
''' </summary>
''' <param name="message">The message that describes the error. </param>
''' <param name="line"></param>
''' <param name="column"></param>
Public Sub New(message As String, line As Integer, column As Integer)
MyBase.New(message)
_line = line
_column = column
End Sub
''' <summary>
''' Initializes a new instance of the <see cref="T:System.Exception"/> class with a specified error message and a reference to the inner exception that is the cause of this exception.
''' </summary>
''' <param name="message">The error message that explains the reason for the exception. </param><param name="innerException">The exception that is the cause of the current exception, or a null reference (Nothing in Visual Basic) if no inner exception is specified. </param>
''' <param name="line"></param>
''' <param name="column"></param>
Public Sub New(message As String, innerException As Exception, line As Integer, column As Integer)
MyBase.New(message, innerException)
_line = line
_column = column
End Sub
Public ReadOnly Property Line() As Integer
Get
Return _line
End Get
End Property
Public ReadOnly Property Column() As Integer
Get
Return _column
End Get
End Property
End Class
Public Enum GmlTokenType
Key
Int
[Double]
[String]
LBracket
RBracket
End Enum
Public Class GmlToken
Public Property Type() As GmlTokenType
Get
Return m_Type
End Get
Private Set
m_Type = Value
End Set
End Property
Private m_Type As GmlTokenType
Public Property Data() As String
Get
Return m_Data
End Get
Private Set
m_Data = Value
End Set
End Property
Private m_Data As String
Public Property Line() As Integer
Get
Return m_Line
End Get
Private Set
m_Line = Value
End Set
End Property
Private m_Line As Integer
Public Property Column() As Integer
Get
Return m_Column
End Get
Private Set
m_Column = Value
End Set
End Property
Private m_Column As Integer
Public Sub New(type__1 As GmlTokenType, line__2 As Integer, column__3 As Integer, data__4 As String)
Type = type__1
Data = data__4
Line = line__2
Column = column__3
End Sub
Public Sub New(type As GmlTokenType, line As Integer, column As Integer)
Me.New(type, line, column, Nothing)
End Sub
End Class
End Namespace