RhSolutions.AddIn/Services/ExcelWriterBase.cs

@@ -134,14 +134,7 @@ namespace RhSolutions.Services
                 }
                 else
                 {
-                    if (amount == 0)
-                    {
-                        cell.Value2 = null;
-                    }
-                    else
-                    {
-                        cell.Value2 = amount;
-                    }
+                    cell.Value2 = amount;
                 }
             }
         }

RhSolutions.AddIn/Tools/ConvertTool.cs

@@ -19,8 +19,8 @@ internal class ConvertTool : Tool
         Application app = RhSolutionsAddIn.Excel.Application;
         Worksheet worksheet = app.ActiveWorkbook.ActiveSheet;
         _reader = _readerFactory.GetReader("Excel");
-        var products = _reader.ReadProducts(new[] { worksheet });
         _writer = _writerFactory.GetWriter("NewPrice");
+        var products = _reader.ReadProducts(new[] { worksheet });
         _writer.WriteProducts(products);
     }
 }

RhSolutions.AddIn/Tools/ExportTool.cs

@@ -17,8 +17,8 @@ internal class ExportTool : Tool
     {
         Application app = RhSolutionsAddIn.Excel.Application;
         _reader = _readerFactory.GetReader("Excel");
-        var products = _reader.ReadProducts(app.Selection);
         _writer = _writerFactory.GetWriter("NewPrice");
+        var products = _reader.ReadProducts(app.Selection);
         _writer.WriteProducts(products);
     }
 }

RhSolutions.AddIn/Tools/GuessTool.cs

@@ -15,8 +15,8 @@ internal class GuessTool : Tool
         Application app = RhSolutionsAddIn.Excel.Application;
         Worksheet worksheet = app.ActiveWorkbook.ActiveSheet;
         _reader = _readerFactory.GetReader("Guess");
-        var products = _reader.ReadProducts(new[] { worksheet });
         _writer = _writerFactory.GetWriter("NewPrice");
+        var products = _reader.ReadProducts(new[] { worksheet });
         _writer.WriteProducts(products);
     }
 }

RhSolutions.AddIn/Tools/MergeTool.cs

@@ -18,8 +18,8 @@ internal class MergeTool : Tool
         IFileDialog dialog = RhSolutionsAddIn.ServiceProvider.GetRequiredService<IFileDialog>();
         string[] files = dialog.GetFiles();
         _reader = _readerFactory.GetReader("Excel");
-        var products = _reader.ReadProducts(files);
         _writer = _writerFactory.GetWriter("NewPrice");
+        var products = _reader.ReadProducts(files);
         _writer.WriteProducts(products);
     }
 }

RhSolutions.AddIn/Tools/SleevesTool.cs

@@ -14,9 +14,9 @@ internal class SleevesTool : Tool
         Application app = RhSolutionsAddIn.Excel.Application;
         Worksheet worksheet = app.ActiveWorkbook.ActiveSheet;
         _reader = _readerFactory.GetReader("Excel");
+        _writer = _writerFactory.GetWriter("CurrentPrice");
         var products = _reader.ReadProducts(new[] { worksheet });
         var sleeves = _sleevesCaluculator.CalculateSleeves(products.Select(p => p.Item2).First());
-        _writer = _writerFactory.GetWriter("CurrentPrice");
         _writer.WriteProducts(sleeves);
     }
 }