edit

XLAB2/PsvPrintService.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Globalization;
 using System.IO;
 using System.Linq;
+using System.Reflection;
 using System.Runtime.InteropServices;
 
 namespace XLAB2
@@ -12,8 +13,11 @@ namespace XLAB2
         private const int OpenPsvTableColumnCount = 7;
         private const int ClosePsvTableColumnCount = 12;
         private const int PrintDialogId = 88;
+        private const int WordActiveEndAdjustedPageNumber = 1;
         private const int WordAlertsNone = 0;
+        private const int WordParagraphTrue = -1;
         private const int WordCloseDoNotSaveChanges = 0;
+        private const int WordStatisticPages = 2;
 
         public void PrintDocument(PsvDocumentSummary document, IReadOnlyList<PsvDocumentLine> lines)
         {
@@ -232,6 +236,9 @@ namespace XLAB2
                         ReleaseComObject(row);
                     }
                 }
+
+                // If trailing document text spills onto a new page, move the last table row with it.
+                EnsureTableSpillsToNextPage(document, table);
             }
             finally
             {
@@ -239,6 +246,60 @@ namespace XLAB2
             }
         }
 
+        private static void EnsureTableSpillsToNextPage(dynamic document, dynamic table)
+        {
+            if (document == null || table == null)
+            {
+                return;
+            }
+
+            var rowCount = Convert.ToInt32(table.Rows.Count, CultureInfo.InvariantCulture);
+            if (rowCount <= 1)
+            {
+                return;
+            }
+
+            RepaginateDocument(document);
+
+            var totalPages = InvokeComIntMethod(document, "ComputeStatistics", WordStatisticPages);
+            if (totalPages <= 1)
+            {
+                return;
+            }
+
+            dynamic lastRow = null;
+            dynamic firstCell = null;
+            dynamic lastRowRange = null;
+            dynamic firstCellRange = null;
+            dynamic paragraphFormat = null;
+
+            try
+            {
+                lastRow = table.Rows.Item(rowCount);
+                lastRowRange = lastRow.Range;
+
+                var lastRowPage = GetRangePageNumber(lastRowRange);
+                if (lastRowPage >= totalPages)
+                {
+                    return;
+                }
+
+                firstCell = lastRow.Cells.Item(1);
+                firstCellRange = firstCell.Range;
+                paragraphFormat = firstCellRange.ParagraphFormat;
+                paragraphFormat.PageBreakBefore = WordParagraphTrue;
+                RepaginateDocument(document);
+            }
+            finally
+            {
+                ReleaseComObject(paragraphFormat);
+                ReleaseComObject(firstCellRange);
+                ReleaseComObject(lastRowRange);
+                ReleaseComObject(firstCell);
+                ReleaseComObject(lastRow);
+            }
+        }
+
         private static void EnsurePsvTableLayout(dynamic table, int expectedColumnCount)
         {
             if (table == null)
@@ -268,6 +329,16 @@ namespace XLAB2
             }
         }
 
+        private static int GetRangePageNumber(object range)
+        {
+            return InvokeComIndexedIntProperty(range, "Information", WordActiveEndAdjustedPageNumber);
+        }
+
+        private static void RepaginateDocument(object document)
+        {
+            InvokeComMethod(document, "Repaginate");
+        }
+
         private static void SetCellText(dynamic row, int columnIndex, string value, bool centerAlign)
         {
             dynamic cell = null;
@@ -317,6 +388,55 @@ namespace XLAB2
             }
         }
 
+        private static int InvokeComIndexedIntProperty(object target, string propertyName, object argument)
+        {
+            if (target == null)
+            {
+                throw new ArgumentNullException("target");
+            }
+
+            return Convert.ToInt32(
+                target.GetType().InvokeMember(
+                    propertyName,
+                    BindingFlags.GetProperty,
+                    null,
+                    target,
+                    new[] { argument }),
+                CultureInfo.InvariantCulture);
+        }
+
+        private static int InvokeComIntMethod(object target, string methodName, object argument)
+        {
+            if (target == null)
+            {
+                throw new ArgumentNullException("target");
+            }
+
+            return Convert.ToInt32(
+                target.GetType().InvokeMember(
+                    methodName,
+                    BindingFlags.InvokeMethod,
+                    null,
+                    target,
+                    new[] { argument }),
+                CultureInfo.InvariantCulture);
+        }
+
+        private static void InvokeComMethod(object target, string methodName)
+        {
+            if (target == null)
+            {
+                throw new ArgumentNullException("target");
+            }
+
+            target.GetType().InvokeMember(
+                methodName,
+                BindingFlags.InvokeMethod,
+                null,
+                target,
+                Array.Empty<object>());
+        }
+
         private static IReadOnlyList<PrintedGroupRow> BuildPrintedGroups(IEnumerable<PsvDocumentLine> lines, bool includeClosedDetails)
         {
             return (lines ?? Enumerable.Empty<PsvDocumentLine>())
@@ -378,7 +498,7 @@ namespace XLAB2
                 return string.Empty;
             }
 
-            if (serialNumbers.Count > 3)
+            if (serialNumbers.Count > 10)
             {
                 return string.Format(CultureInfo.InvariantCulture, "{0} зав. номеров", serialNumbers.Count);
             }