From ddcb90870fc8eb2904cc37e5abb528432d04830e Mon Sep 17 00:00:00 2001
From: KharchenkoVV <vv.harchenko@autodrilling.ru>
Date: Mon, 20 Sep 2021 15:12:02 +0500
Subject: [PATCH] Added images copying

---
 ConsoleApp1/Program.cs | 67 ++++++++++++++++++++++++++++++------------
 1 file changed, 48 insertions(+), 19 deletions(-)

diff --git a/ConsoleApp1/Program.cs b/ConsoleApp1/Program.cs
index aea971ea..ef014e22 100644
--- a/ConsoleApp1/Program.cs
+++ b/ConsoleApp1/Program.cs
@@ -17,16 +17,31 @@ namespace ConsoleApp1
 
     class Program
     {
-        private static void CopyImages(IXLWorksheet sourceSheet, IXLWorksheet resultSheet)
+        private static IXLWorksheet CopyImagesToAnotherSheet(IXLWorksheet sourceSheet, IXLWorksheet resultSheet)
         {
             foreach (var picture in sourceSheet.Pictures)
             {
-                var newImage = resultSheet.AddPicture(picture.ImageStream)
-                                          .WithPlacement(XLPicturePlacement.FreeFloating)
-                                          .WithSize(picture.Width, picture.Height)
-                                          .MoveTo(resultSheet.Cell(picture.TopLeftCell.Address), 
-                                                  picture.Left, picture.Top);
+                resultSheet.AddPicture(picture.ImageStream)
+                           .WithPlacement(XLPicturePlacement.Move)
+                           .WithSize(picture.Width, picture.Height)
+                           .MoveTo(resultSheet.Cell(picture.TopLeftCell.Address), 
+                                   picture.Left, picture.Top);
             }
+
+            return resultSheet;
+        }
+
+        private static void RemovePicturesFromSheet(IXLWorksheet sheet)
+        {
+            var picsNames = new List<string>();
+
+            foreach (var p in sheet.Pictures)
+                picsNames.Add(p.Name);
+
+            var filteredPics = picsNames.Distinct();
+
+            foreach (var n in filteredPics)
+                sheet.Pictures.Delete(n);
         }
 
         private static IXLRange GetCellsRange(IXLWorksheet sheet)
@@ -38,17 +53,36 @@ namespace ConsoleApp1
             return rngData;
         }
 
+        // Изображения не переносятся при вызове метода sheet.CopyTo(). Падает с exception.
+        // Для этого сначала все изображения переносятся на временный лист "PicsCopy",
+        // затем удаляются из копируемого листа, копируемый лист копируется в лист-результат
+        // и после этого из temp листа "PicsCopy" в лист-результат также копируются изображения.
+        private static void CopySheetToFile(IXLWorksheet currentSheet, XLWorkbook resultExcelFile)
+        {
+            var picturesCopySheet = resultExcelFile.AddWorksheet("PicsCopy");
+
+            CopyImagesToAnotherSheet(currentSheet, picturesCopySheet);
+
+            RemovePicturesFromSheet(currentSheet);
+
+            var resultSheet = currentSheet.CopyTo(resultExcelFile, currentSheet.Name);
+
+            CopyImagesToAnotherSheet(picturesCopySheet, resultSheet);
+
+            picturesCopySheet.Delete();
+        }
+
         static void Main(/*string[] args*/)
         {
             var sourceExcelPaths = new List<string>
             {
                 //@"D:\excels\excel1.xlsx",
                 //@"D:\excels\excel2.xlsx"
-                //@"D:\excels\e1.xlsx",
-                //@"D:\excels\e2.xlsx",
-                //@"D:\excels\e3.xlsx",
-                //@"D:\excels\e4.XLSX",
-                //@"D:\excels\e5.XLSX",
+                @"D:\excels\e1.xlsx",
+                @"D:\excels\e2.xlsx",
+                @"D:\excels\e3.xlsx",
+                @"D:\excels\e4.XLSX",
+                @"D:\excels\e5.XLSX",
                 @"D:\excels\e6.XLSX"
             };
 
@@ -84,7 +118,6 @@ namespace ConsoleApp1
                             return;
 
                         var resultSheet = resultExcelFile.Worksheets.Add(sheet.Name);
-                        //resultSheet.Cell(1, 1).Value = rngData;
 
                         var rngData = GetCellsRange(sheet);
 
@@ -98,7 +131,7 @@ namespace ConsoleApp1
                             resultSheet.Column(i).Width = sheet.Column(i).Width;
                         }
 
-                        CopyImages(sheet, resultSheet);
+                        CopyImagesToAnotherSheet(sheet, resultSheet);
 
                         GC.Collect();
                     }
@@ -113,18 +146,14 @@ namespace ConsoleApp1
                         foreach (var d in columnsToDelete)
                             d.Delete();
 
-                        var resultSheet = sheet.CopyTo(resultExcelFile, sheet.Name);
-
-                        CopyImages(sheet, resultSheet);
+                        CopySheetToFile(sheet, resultExcelFile);
 
                         GC.Collect();
                     }
                     // Если по колонкам все хорошо, копируем лист красиво.
                     else
                     {
-                        var resultSheet =  sheet.CopyTo(resultExcelFile, sheet.Name);
-
-                        CopyImages(sheet, resultSheet);
+                        CopySheetToFile(sheet, resultExcelFile);
 
                         GC.Collect();
                     }