TryGetGraphFromGraphDataProvider
(
Object graphDataProvider,
out IGraph graph
)
{
Debug.Assert(graphDataProvider != null);
Debug.Assert(graphDataProvider is IGraphDataProvider2 ||
graphDataProvider is IGraphDataProvider);
graph = null;
GraphMLGraphAdapter oGraphMLGraphAdapter = new GraphMLGraphAdapter();
if (graphDataProvider is IGraphDataProvider2)
{
String sPathToTemporaryFile = null;
if (!((IGraphDataProvider2)graphDataProvider)
.TryGetGraphDataAsTemporaryFile(out sPathToTemporaryFile))
{
return(false);
}
try
{
graph = oGraphMLGraphAdapter.LoadGraphFromFile(
sPathToTemporaryFile);
}
finally
{
File.Delete(sPathToTemporaryFile);
}
}
else
{
String sGraphDataAsGraphML;
if (!((IGraphDataProvider)graphDataProvider).TryGetGraphData(
out sGraphDataAsGraphML))
{
return(false);
}
graph = oGraphMLGraphAdapter.LoadGraphFromString(
sGraphDataAsGraphML);
}
return(true);
}
OpenObject
(
String sFileName,
out Object oObject
)
{
Debug.Assert(!String.IsNullOrEmpty(sFileName));
Debug.Assert(File.Exists(sFileName));
AssertValid();
oObject = null;
// Use a graph adapter to create a graph from the file.
IGraphAdapter oGraphMLGraphAdapter = new GraphMLGraphAdapter();
oObject = oGraphMLGraphAdapter.LoadGraphFromFile(sFileName);
}
GetGraphML
(
Microsoft.Office.Interop.Excel.Workbook oWorkbook
)
{
Debug.Assert(oWorkbook != null);
String sGraphML = null;
// The graph owned by the NodeXLControl can't be used, because it
// doesn't include all the edge and vertex column data needed for
// GraphML. Instead, read the graph from the workbook and include all
// the necessary data.
ReadWorkbookContext oReadWorkbookContext = new ReadWorkbookContext();
oReadWorkbookContext.ReadAllEdgeAndVertexColumns = true;
WorkbookReader oWorkbookReader = new WorkbookReader();
IGraph oGraphForGraphML = oWorkbookReader.ReadWorkbook(
oWorkbook, oReadWorkbookContext);
GraphMLGraphAdapter oGraphMLGraphAdapter = new GraphMLGraphAdapter();
using (MemoryStream oMemoryStream = new MemoryStream())
{
oGraphMLGraphAdapter.SaveGraph(oGraphForGraphML, oMemoryStream);
oMemoryStream.Position = 0;
using (StreamReader oStreamReader =
new StreamReader(oMemoryStream))
{
sGraphML = oStreamReader.ReadToEnd();
}
}
return(sGraphML);
}
SetUp()
{
m_oGraphAdapter = new GraphMLGraphAdapter();
m_sTempFileName = Path.GetTempFileName();
}
