Save Layer To File Snippet

///<summary>Write and Layer to a file on disk.</summary>
///  
///<param name="layerFilePath">A System.String that is the path and filename for the layer file to be created. Example: "C:\temp\cities.lyr"</param>
///<param name="layer">An ILayer interface.</param>
///   
///<remarks></remarks>
public void SaveToLayerFile(System.String layerFilePath, ESRI.ArcGIS.Carto.ILayer layer)
{
  if(layer == null)
  {
    return;
  }
  //create a new LayerFile instance
  ESRI.ArcGIS.Carto.ILayerFile layerFile = new ESRI.ArcGIS.Carto.LayerFileClass();

  //make sure that the layer file name is valid
  if (System.IO.Path.GetExtension(layerFilePath) != ".lyr")
    return;
  if (layerFile.get_IsPresent(layerFilePath))
    System.IO.File.Delete(layerFilePath);

  //create a new layer file
  layerFile.New(layerFilePath);

  //attach the layer file with the actual layer
  layerFile.ReplaceContents(layer);

  //save the layer file
  layerFile.Save();
}

'''<summary>Write and Layer to a file on disk.</summary>
'''  
'''<param name="layerFilePath">A System.String that is the path and filename for the layer file to be created. Example: "C:\temp\cities.lyr"</param>
'''<param name="layer">An ILayer interface.</param>
'''   
'''<remarks></remarks>
Public Sub SaveToLayerFile(ByVal layerFilePath As System.String, ByVal layer As ESRI.ArcGIS.Carto.ILayer)

  If layer Is Nothing Then
    Return
  End If

  'create a new LayerFile instance
  Dim layerFile As ESRI.ArcGIS.Carto.ILayerFile = New ESRI.ArcGIS.Carto.LayerFileClass

  'make sure that the layer file name is valid
  If System.IO.Path.GetExtension(layerFilePath) <> ".lyr" Then
    Return
  End If

  If layerFile.IsPresent(layerFilePath) Then
    System.IO.File.Delete(layerFilePath)
  End If

  'create a new layer file
  layerFile.New(layerFilePath)

  'attach the layer file with the actual layer
  layerFile.ReplaceContents(layer)

  'save the layer file
  layerFile.Save()

End Sub