Public Property SourceFields As CsvLayer.FieldCollection

public CsvLayer.FieldCollection SourceFields {get; set;}

<Grid x:Name="LayoutRoot" >
  
  <!-- Add a Map Control to the application. Set the Extent to North America. -->
  <esri:Map x:Name="Map1" HorizontalAlignment="Left" VerticalAlignment="Top" 
        Margin="0,212,0,0" Height="376" Width="415" Extent="-15219969,2609636,-6232883,6485365">
  
    <!-- Add a backdrop ArcGISTiledMapServiceLayer. -->
    <esri:ArcGISTiledMapServiceLayer  ID="World_Topo_Map" 
          Url="http://services.arcgisonline.com/arcgis/rest/services/world_topo_map/MapServer" />
  
  </esri:Map>
  
  <!-- Add a Button that will allow the user to add a CsvLayer via code-behind. -->
  <Button Name="Button1" Height="23" HorizontalAlignment="Left" Margin="0,183,0,0"  VerticalAlignment="Top" 
          Width="706" Content="Add a CsvLayer (via code-behind) for the specified Url."
          Click="Button1_Click" />
  
  <!-- TextBox to display attribute information about about the CsvLayer added to the Map. -->
  <TextBox Height="376" HorizontalAlignment="Left" Margin="421,212,0,0" Name="TextBox1" VerticalAlignment="Top" 
           Width="285" />
  
  <!-- Provide the instructions on how to use the sample code. -->
  <TextBlock Height="174" HorizontalAlignment="Left" Name="TextBlock1" VerticalAlignment="Top" Width="788" 
             TextWrapping="Wrap" Text="Click the Button to add a CsvLayer to the Map. The ID of the layer and 
             its attribute information will displayed in the TextBox." />
</Grid>

private void Button1_Click(object sender, System.Windows.RoutedEventArgs e)
{
  // This function executes as a result of the user clicking the Button. It adds a CsvLayer using code-behind.
  
  // Create a CsvLayer. 
  ESRI.ArcGIS.Client.Toolkit.DataSources.CsvLayer myCsvLayer = new ESRI.ArcGIS.Client.Toolkit.DataSources.CsvLayer();
  
  // Set the Url of the CsvLayer to a public service. 
  // NOTE: you need to adjust the Url to a .csv file served up on you test web server.
  myCsvLayer.Url = "http://www.yourserver.com/CSV_Files/US_Cities_Top_3_ManyFields.csv";
  
  // Set the ID of the CsvLayer.
  myCsvLayer.ID = "US_Cities_Top_3_ManyFields";
  
  // Create a FieldCollection object to define what Fields from the CSV file will be imported into the CsvLayer.
  ESRI.ArcGIS.Client.Toolkit.DataSources.CsvLayer.FieldCollection theSourceFields = null;
  theSourceFields = new ESRI.ArcGIS.Client.Toolkit.DataSources.CsvLayer.FieldCollection();
  
  // Define the Field objects that will be read in from the CSV file. 
  // NOTE: not all of the attribute fields that are in the CSV file will be converted to Fields in the CsvLayer.
  ESRI.ArcGIS.Client.Field theIDfield = new ESRI.ArcGIS.Client.Field();
  theIDfield.FieldName = "ID";
  theIDfield.Type = ESRI.ArcGIS.Client.Field.FieldType.OID;
  ESRI.ArcGIS.Client.Field theXfield = new ESRI.ArcGIS.Client.Field();
  theXfield.FieldName = "X";
  theXfield.Type = ESRI.ArcGIS.Client.Field.FieldType.Double;
  ESRI.ArcGIS.Client.Field theYfield = new ESRI.ArcGIS.Client.Field();
  theYfield.FieldName = "Y";
  theYfield.Type = ESRI.ArcGIS.Client.Field.FieldType.Double;
  ESRI.ArcGIS.Client.Field theCity = new ESRI.ArcGIS.Client.Field();
  theCity.FieldName = "City";
  theCity.Type = ESRI.ArcGIS.Client.Field.FieldType.String;
  ESRI.ArcGIS.Client.Field thePopulation = new ESRI.ArcGIS.Client.Field();
  thePopulation.FieldName = "Population";
  thePopulation.Type = ESRI.ArcGIS.Client.Field.FieldType.Integer;
  ESRI.ArcGIS.Client.Field theMyDate = new ESRI.ArcGIS.Client.Field();
  theMyDate.FieldName = "MyDate";
  theMyDate.Type = ESRI.ArcGIS.Client.Field.FieldType.Date;
  
  // Add the defined Fields into the FieldCollection object.
  theSourceFields.Add(theIDfield);
  theSourceFields.Add(theXfield);
  theSourceFields.Add(theYfield);
  theSourceFields.Add(theCity);
  theSourceFields.Add(thePopulation);
  theSourceFields.Add(theMyDate);
  
  // Set the custom FieldCollection to the CsvLayer.SourceFields Property.
  myCsvLayer.SourceFields = theSourceFields;
  
  // Create a SimpleMarkerSymbol (a red traingle) for the CsvLayer that will be added.
  ESRI.ArcGIS.Client.Symbols.SimpleMarkerSymbol theSimpleMarkerSymbol = new ESRI.ArcGIS.Client.Symbols.SimpleMarkerSymbol();
  theSimpleMarkerSymbol.Color = new System.Windows.Media.SolidColorBrush(System.Windows.Media.Colors.Red);
  theSimpleMarkerSymbol.Size = 18;
  theSimpleMarkerSymbol.Style = ESRI.ArcGIS.Client.Symbols.SimpleMarkerSymbol.SimpleMarkerStyle.Triangle;
  
  // Define a SimpleRenderer and set the Symbol to the SimpleMarkerSymbol.
  ESRI.ArcGIS.Client.SimpleRenderer theSimpleRenderer = new ESRI.ArcGIS.Client.SimpleRenderer();
  theSimpleRenderer.Symbol = theSimpleMarkerSymbol;
  
  // Define the Renderer for the CsvLayer.
  myCsvLayer.Renderer = theSimpleRenderer;
  
  // Wire-up the Initialized Event of the CsvLayer.
  myCsvLayer.Initialized += CsvLayer_Initialized;
  
  // Add the CsvLayer to the Map.
  Map1.Layers.Add(myCsvLayer);
}
            
private void CsvLayer_Initialized(object sender, EventArgs e)
{
  // This function will execute as a result of the CsvLayer that was defined in code-behind being Initialized.
  
  // Get the CsvLayer.
  ESRI.ArcGIS.Client.Toolkit.DataSources.CsvLayer myCsvLayer = (ESRI.ArcGIS.Client.Toolkit.DataSources.CsvLayer)sender;
  
  // Get the ID of the CsvLayer.
  string myID = myCsvLayer.ID;
  
  // Create a StringBuilder object to hold information about the CsvLayer and add some useful information to it.
  System.Text.StringBuilder myStringBuilder = new System.Text.StringBuilder();
  myStringBuilder.Append("The CsvLayer and it's ID is: " + Environment.NewLine);
  myStringBuilder.Append(myID + Environment.NewLine);
  myStringBuilder.Append("====================================" + Environment.NewLine);
  
  // Get the GraphicCollection from the CsvLayer.
  ESRI.ArcGIS.Client.GraphicCollection theGraphicCollection = myCsvLayer.Graphics;
  if (theGraphicCollection != null)
  {
    // Loop through each Graphic.
    foreach (ESRI.ArcGIS.Client.Graphic oneGraphic in theGraphicCollection)
    {
      // Get the Attribute Keys. 
      System.Collections.Generic.ICollection<string> theFieldNameKeys = oneGraphic.Attributes.Keys;
      
      // Loop through each Attribute.
      foreach (var oneKey in theFieldNameKeys)
      {
        // Get the value of the Attribute Field.
        string theValue = oneGraphic.Attributes[oneKey].ToString();
        
        // Get the Type of the Attribute Field.
        string oneFieldType = oneGraphic.Attributes[oneKey].GetType().ToString();
        
        // Add the Attribute Field name, OS data type, and Attribute value to the StringBuilder object.
        myStringBuilder.Append(oneKey.ToString() + "(" + oneFieldType + "): " + theValue + Environment.NewLine);
      }
      myStringBuilder.Append(Environment.NewLine);
    }
  }
  
  // Display the results of the StringBuilder text to the user.
  TextBox1.Text = myStringBuilder.ToString();
}

Private Sub Button1_Click(sender As System.Object, e As System.Windows.RoutedEventArgs)
            
  ' This function executes as a result of the user clicking the Button. It adds a CsvLayer using code-behind.
  
  ' Create a CsvLayer. 
  Dim myCsvLayer As ESRI.ArcGIS.Client.Toolkit.DataSources.CsvLayer = New ESRI.ArcGIS.Client.Toolkit.DataSources.CsvLayer
  
  ' Set the Url of the CsvLayer to a public service. 
  ' NOTE: you need to adjust the Url to a .csv file served up on you test web server.
  myCsvLayer.Url = "http://www.yourserver.com/CSV_Files/US_Cities_Top_3_ManyFields.csv"
  
  ' Set the ID of the CsvLayer.
  myCsvLayer.ID = "US_Cities_Top_3_ManyFields"
  
  ' Create a FieldCollection object to define what Fields from the CSV file will be imported into the CsvLayer.
  Dim theSourceFields As ESRI.ArcGIS.Client.Toolkit.DataSources.CsvLayer.FieldCollection
  theSourceFields = New ESRI.ArcGIS.Client.Toolkit.DataSources.CsvLayer.FieldCollection
  
  ' Define the Field objects that will be read in from the CSV file. 
  ' NOTE: not all of the attribute fields that are in the CSV file will be converted to Fields in the CsvLayer.
  Dim theIDfield As ESRI.ArcGIS.Client.Field = New ESRI.ArcGIS.Client.Field
  theIDfield.FieldName = "ID"
  theIDfield.Type = ESRI.ArcGIS.Client.Field.FieldType.OID
  Dim theXfield As ESRI.ArcGIS.Client.Field = New ESRI.ArcGIS.Client.Field
  theXfield.FieldName = "X"
  theXfield.Type = ESRI.ArcGIS.Client.Field.FieldType.Double
  Dim theYfield As ESRI.ArcGIS.Client.Field = New ESRI.ArcGIS.Client.Field
  theYfield.FieldName = "Y"
  theYfield.Type = ESRI.ArcGIS.Client.Field.FieldType.Double
  Dim theCity As ESRI.ArcGIS.Client.Field = New ESRI.ArcGIS.Client.Field
  theCity.FieldName = "City"
  theCity.Type = ESRI.ArcGIS.Client.Field.FieldType.String
  Dim thePopulation As ESRI.ArcGIS.Client.Field = New ESRI.ArcGIS.Client.Field
  thePopulation.FieldName = "Population"
  thePopulation.Type = ESRI.ArcGIS.Client.Field.FieldType.Integer
  Dim theMyDate As ESRI.ArcGIS.Client.Field = New ESRI.ArcGIS.Client.Field
  theMyDate.FieldName = "MyDate"
  theMyDate.Type = ESRI.ArcGIS.Client.Field.FieldType.Date
  
  ' Add the defined Fields into the FieldCollection object.
  theSourceFields.Add(theIDfield)
  theSourceFields.Add(theXfield)
  theSourceFields.Add(theYfield)
  theSourceFields.Add(theCity)
  theSourceFields.Add(thePopulation)
  theSourceFields.Add(theMyDate)
  
  ' Set the custom FieldCollection to the CsvLayer.SourceFields Property.
  myCsvLayer.SourceFields = theSourceFields
  
  ' Create a SimpleMarkerSymbol (a red traingle) for the CsvLayer that will be added.
  Dim theSimpleMarkerSymbol As ESRI.ArcGIS.Client.Symbols.SimpleMarkerSymbol = New ESRI.ArcGIS.Client.Symbols.SimpleMarkerSymbol
  theSimpleMarkerSymbol.Color = New System.Windows.Media.SolidColorBrush(System.Windows.Media.Colors.Red)
  theSimpleMarkerSymbol.Size = 18
  theSimpleMarkerSymbol.Style = ESRI.ArcGIS.Client.Symbols.SimpleMarkerSymbol.SimpleMarkerStyle.Triangle
  
  ' Define a SimpleRenderer and set the Symbol to the SimpleMarkerSymbol.
  Dim theSimpleRenderer As ESRI.ArcGIS.Client.SimpleRenderer = New ESRI.ArcGIS.Client.SimpleRenderer
  theSimpleRenderer.Symbol = theSimpleMarkerSymbol
  
  ' Define the Renderer for the CsvLayer.
  myCsvLayer.Renderer = theSimpleRenderer
  
  ' Wire-up the Initialized Event of the CsvLayer.
  AddHandler myCsvLayer.Initialized, AddressOf CsvLayer_Initialized
  
  ' Add the CsvLayer to the Map.
  Map1.Layers.Add(myCsvLayer)
  
End Sub
            
Private Sub CsvLayer_Initialized(sender As Object, e As EventArgs)
  
  ' This function will execute as a result of the CsvLayer that was defined in code-behind being Initialized.
  
  ' Get the CsvLayer.
  Dim myCsvLayer As ESRI.ArcGIS.Client.Toolkit.DataSources.CsvLayer = CType(sender, ESRI.ArcGIS.Client.Toolkit.DataSources.CsvLayer)
  
  ' Get the ID of the CsvLayer.
  Dim myID As String = myCsvLayer.ID
  
  ' Create a StringBuilder object to hold information about the CsvLayer and add some useful information to it.
  Dim myStringBuilder As New Text.StringBuilder
  myStringBuilder.Append("The CsvLayer and it's ID is: " + vbCrLf)
  myStringBuilder.Append(myID + vbCrLf)
  myStringBuilder.Append("====================================" + vbCrLf)
  
  ' Get the GraphicCollection from the CsvLayer.
  Dim theGraphicCollection As ESRI.ArcGIS.Client.GraphicCollection = myCsvLayer.Graphics
  If theGraphicCollection IsNot Nothing Then
    
    ' Loop through each Graphic.
    For Each oneGraphic As ESRI.ArcGIS.Client.Graphic In theGraphicCollection
      
      ' Get the Attribute Keys. 
      Dim theFieldNameKeys As System.Collections.Generic.ICollection(Of String) = oneGraphic.Attributes.Keys
      
      ' Loop through each Attribute.
      For Each oneKey In theFieldNameKeys
        
        ' Get the value of the Attribute Field.
        Dim theValue As String = oneGraphic.Attributes(oneKey)
        
        ' Get the Type of the Attribute Field.
        Dim oneFieldType As String = oneGraphic.Attributes(oneKey).GetType.ToString
        
        ' Add the Attribute Field name, OS data type, and Attribute value to the StringBuilder object.
        myStringBuilder.Append(oneKey.ToString + "(" + oneFieldType + "): " + theValue + vbCrLf)
        
      Next
      myStringBuilder.Append(vbCrLf)
    Next
    
  End If
  
  ' Display the results of the StringBuilder text to the user.
  TextBox1.Text = myStringBuilder.ToString
  
End Sub