Ejemplo n.º 1
0
        //*************************************************************************
        //  Method: ReadWorkbookInternal()
        //
        /// <summary>
        /// Creates a NodeXL graph from the contents of an Excel workbook.
        /// </summary>
        ///
        /// <param name="workbook">
        /// Workbook containing the graph data.
        /// </param>
        ///
        /// <param name="readWorkbookContext">
        /// Provides access to objects needed for converting an Excel workbook to a
        /// NodeXL graph.
        /// </param>
        ///
        /// <returns>
        /// A new graph.
        /// </returns>
        ///
        /// <remarks>
        /// If <paramref name="workbook" /> contains valid graph data, a new <see
        /// cref="IGraph" /> is created from the workbook contents and returned.
        /// Otherwise, a <see cref="WorkbookFormatException" /> is thrown.
        /// </remarks>
        //*************************************************************************
        protected IGraph ReadWorkbookInternal(
            Microsoft.Office.Interop.Excel.Workbook workbook,
            ReadWorkbookContext readWorkbookContext
            )
        {
            Debug.Assert(readWorkbookContext != null);
            Debug.Assert(workbook != null);
            AssertValid();

            if (readWorkbookContext.PopulateVertexWorksheet)
            {
            // Create and use the object that fills in the vertex worksheet.

            VertexWorksheetPopulator oVertexWorksheetPopulator =
                new VertexWorksheetPopulator();

            try
            {
                oVertexWorksheetPopulator.PopulateVertexWorksheet(
                    workbook, false);
            }
            catch (WorkbookFormatException)
            {
                // Ignore this type of error, which occurs when the vertex
                // worksheet is missing, for example.
            }
            }

            // Create a graph with the appropriate directedness.

            PerWorkbookSettings oPerWorkbookSettings =
            new PerWorkbookSettings(workbook);

            IGraph oGraph = new Graph(oPerWorkbookSettings.GraphDirectedness);

            // Read the edge worksheet.  This adds data to oGraph,
            // ReadWorkbookContext.VertexNameDictionary, and
            // ReadWorkbookContext.EdgeIDDictionary.

            EdgeWorksheetReader oEdgeWorksheetReader = new EdgeWorksheetReader();

            oEdgeWorksheetReader.ReadWorksheet(workbook, readWorkbookContext,
            oGraph);

            oEdgeWorksheetReader = null;

            // Read the vertex worksheet.  This adds metadata to the vertices in
            // oGraph; adds any isolated vertices to oGraph and
            // ReadWorkbookContext.VertexNameDictionary; and removes any skipped
            // vertices (and their incident edges) from
            // ReadWorkbookContext.VertexNameDictionary,
            // ReadWorkbookContext.EdgeIDDictionary, and oGraph.

            VertexWorksheetReader oVertexWorksheetReader =
            new VertexWorksheetReader();

            oVertexWorksheetReader.ReadWorksheet(workbook, readWorkbookContext,
            oGraph);

            oVertexWorksheetReader = null;

            if (readWorkbookContext.ReadAllEdgeAndVertexColumns)
            {
            // The other worksheets should be ignored.

            return (oGraph);
            }

            if (readWorkbookContext.ReadGroups)
            {
            // Read the group worksheets.  This adds metadata to the vertices
            // in oGraph and to oGraph itself.

            GroupWorksheetReader oGroupWorksheetReader =
                new GroupWorksheetReader();

            oGroupWorksheetReader.ReadWorksheet(workbook,
                readWorkbookContext, oGraph);

            oGroupWorksheetReader = null;
            }

            // Read the per-workbook settings that are stored directly on the
            // graph.

            oPerWorkbookSettings.ReadWorksheet(workbook, readWorkbookContext,
            oGraph);

            return (oGraph);
        }
Ejemplo n.º 2
0
        ReadWorkbookInternal
        (
            Microsoft.Office.Interop.Excel.Workbook workbook,
            ReadWorkbookContext readWorkbookContext
        )
        {
            Debug.Assert(readWorkbookContext != null);
            Debug.Assert(workbook != null);
            AssertValid();

            if (readWorkbookContext.PopulateVertexWorksheet)
            {
                // Create and use the object that fills in the vertex worksheet.

                VertexWorksheetPopulator oVertexWorksheetPopulator =
                    new VertexWorksheetPopulator();

                try
                {
                    oVertexWorksheetPopulator.PopulateVertexWorksheet(
                        workbook, false);
                }
                catch (WorkbookFormatException)
                {
                    // Ignore this type of error, which occurs when the vertex
                    // worksheet is missing, for example.
                }
            }

            // Create a graph with the appropriate directedness.

            PerWorkbookSettings oPerWorkbookSettings =
                new PerWorkbookSettings(workbook);

            IGraph oGraph = new Graph(oPerWorkbookSettings.GraphDirectedness);

            // Read the edge worksheet.  This adds data to oGraph,
            // ReadWorkbookContext.VertexNameDictionary, and
            // ReadWorkbookContext.EdgeIDDictionary.

            EdgeWorksheetReader oEdgeWorksheetReader = new EdgeWorksheetReader();

            oEdgeWorksheetReader.ReadWorksheet(workbook, readWorkbookContext,
                                               oGraph);

            oEdgeWorksheetReader = null;

            // Read the vertex worksheet.  This adds metadata to the vertices in
            // oGraph; adds any isolated vertices to oGraph and
            // ReadWorkbookContext.VertexNameDictionary; and removes any skipped
            // vertices (and their incident edges) from
            // ReadWorkbookContext.VertexNameDictionary,
            // ReadWorkbookContext.EdgeIDDictionary, and oGraph.

            VertexWorksheetReader oVertexWorksheetReader =
                new VertexWorksheetReader();

            oVertexWorksheetReader.ReadWorksheet(workbook, readWorkbookContext,
                                                 oGraph);

            oVertexWorksheetReader = null;

            if (readWorkbookContext.ReadAllEdgeAndVertexColumns)
            {
                // The other worksheets should be ignored.

                return(oGraph);
            }

            if (readWorkbookContext.ReadGroups)
            {
                // Read the group worksheets.  This adds metadata to the vertices
                // in oGraph and to oGraph itself.

                GroupWorksheetReader oGroupWorksheetReader =
                    new GroupWorksheetReader();

                oGroupWorksheetReader.ReadWorksheet(workbook,
                                                    readWorkbookContext, oGraph);

                oGroupWorksheetReader = null;
            }

            // Read the per-workbook settings that are stored directly on the
            // graph.

            oPerWorkbookSettings.ReadWorksheet(workbook, readWorkbookContext,
                                               oGraph);

            return(oGraph);
        }