Create and configure Excel instance using COM interop / late binding

Author: albertospelta

AnalyzeInExcel/App.xaml.cs

@@ -105,8 +105,9 @@ protected override void OnStartup(StartupEventArgs e)
                             {
                                 // TODO request action / configuration to users
                             }
-                            
-                            RunExcelProcess(serverName, databaseName, cubeName);
+
+                            ExcelHelper.CreateInstanceWithPivotTable(serverName, databaseName, cubeName);
+                            //RunExcelProcess(serverName, databaseName, cubeName);
                             th.TrackEvent("Run Excel");
                         }
                         else

AnalyzeInExcel/ExcelHelper.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Runtime.InteropServices;
 
 namespace AnalyzeInExcel
 {
@@ -13,5 +14,108 @@ public static bool IsExcelAvailable()
             var type = Type.GetTypeFromProgID("Excel.Application");
             return (type != null);
         }
+
+        public static void CreateInstanceWithPivotTable(string serverName, string databaseName, string cubeName)
+        {
+            //const int XlSheetType_xlWorksheet = -4167; // Excel.XlSheetType.xlWorksheet
+            const int XlLayoutRowType_xlCompactRow = 0; // Excel.XlLayoutRowType.xlCompactRow
+            const int XlPivotTableSourceType_xlExternal = 2; // Excel.XlPivotTableSourceType.xlExternal
+            const int XlPivotFieldRepeatLabels_xlRepeatLabels = 2; // Excel.XlPivotFieldRepeatLabels.xlRepeatLabels
+            //const int XlPivotFieldOrientation_xlRowField = 1; // Excel.XlPivotFieldOrientation.xlRowField
+
+            var connectionString = ModelHelper.GetOleDbConnectionString(serverName, databaseName);
+            var connectionName = $"AnalyzeInExcel [{ serverName }].[{ databaseName }].[{ cubeName }]";
+            var commandText = cubeName;
+            var pivotTableName = $"AnalyzeInExcelPivotTable";
+
+            var type = Type.GetTypeFromProgID("Excel.Application");
+            //if (type == null)
+            //    return;
+
+            dynamic app = Activator.CreateInstance(type);
+            try
+            {
+                app.Visible = true;
+
+                var workbook = app.Workbooks.Add();
+
+                var workbookConnection = workbook.Connections.Add(
+                    Name: connectionName,
+                    Description: "",
+                    ConnectionString: $"OLEDB;{ connectionString }",
+                    CommandText: commandText,
+                    lCmdtype: 1
+                    );
+
+                var pivotCache = workbook.PivotCaches().Create(
+                    SourceType: XlPivotTableSourceType_xlExternal,
+                    SourceData: workbookConnection
+                    );
+
+                #region Configure PivotCache
+
+                pivotCache.RefreshOnFileOpen = false;
+
+                #endregion
+
+                var worksheet = workbook.ActiveSheet;
+                //var worksheet = workbook.Worksheets.Add(
+                //    Type: XlSheetType_xlWorksheet
+                //    );
+
+                var pivotTable = pivotCache.CreatePivotTable(
+                    TableDestination: worksheet.Range["A1"],
+                    TableName: pivotTableName,
+                    ReadData: false
+                    );
+
+                #region Configure PivotTable
+
+                pivotTable.ColumnGrand = true;
+                pivotTable.HasAutoFormat = true;
+                pivotTable.DisplayErrorString = true;
+                pivotTable.DisplayNullString = true;
+                pivotTable.EnableDrilldown = true;
+                pivotTable.ErrorString = "";
+                pivotTable.MergeLabels = false;
+                pivotTable.NullString = "";
+                pivotTable.PageFieldOrder = 2;
+                pivotTable.PageFieldWrapCount = 0;
+                pivotTable.PreserveFormatting = true;
+                pivotTable.RowGrand = true;
+                pivotTable.PrintTitles = false;
+                pivotTable.RepeatItemsOnEachPrintedPage = true;
+                pivotTable.TotalsAnnotation = true;
+                pivotTable.CompactRowIndent = 1;
+                pivotTable.VisualTotals = false;
+                pivotTable.InGridDropZones = false;
+                pivotTable.DisplayFieldCaptions = true;
+                pivotTable.DisplayMemberPropertyTooltips = true;
+                pivotTable.DisplayContextTooltips = true;
+                pivotTable.ShowDrillIndicators = true;
+                pivotTable.PrintDrillIndicators = false;
+                pivotTable.DisplayEmptyRow = false;
+                pivotTable.DisplayEmptyColumn = false;
+                pivotTable.AllowMultipleFilters = false;
+                pivotTable.SortUsingCustomLists = true;
+                pivotTable.DisplayImmediateItems = true;
+                pivotTable.ViewCalculatedMembers = true;
+                pivotTable.EnableWriteback = false;
+                pivotTable.ShowValuesRow = false;
+                pivotTable.CalculatedMembersInFilters = true;
+                pivotTable.RowAxisLayout(XlLayoutRowType_xlCompactRow);
+                pivotTable.RepeatAllLabels(XlPivotFieldRepeatLabels_xlRepeatLabels);
+
+                #endregion
+
+                //var field1 = pivotTable.CubeFields.Item[1];
+                //field1.Orientation = XlPivotFieldOrientation_xlRowField;
+                //field1.Position = 1;
+            }
+            finally
+            {
+                Marshal.ReleaseComObject(app);
+            }
+        }
     }
 }