Fixes issue #393

Author: JanKallman

src/EPPlus/Table/ExcelTableColumn.cs

@@ -262,7 +262,7 @@ private void SetTableFormula()
         {
             int fromRow = _tbl.ShowHeader ? _tbl.Address._fromRow + 1 : _tbl.Address._fromRow;
             int toRow = _tbl.ShowTotal ? _tbl.Address._toRow - 1 : _tbl.Address._toRow;
-            var colNum = _tbl.Address._fromRow + Position;
+            var colNum = _tbl.Address._fromCol + Position;
             string r1c1Formula = ExcelCellBase.TranslateToR1C1(CalculatedColumnFormula, fromRow, colNum);
             bool needsTranslation = r1c1Formula != CalculatedColumnFormula;
 

src/EPPlusTest/Table/TableTests.cs

@@ -125,7 +125,7 @@ public void ValidateEncodingForTableColumnNames()
             ws.Cells["A1"].Value = "Col1>";
             ws.Cells["B1"].Value = "Col1>";
             var tbl = ws.Tables.Add(ws.Cells["A1:C2"], "TableValColNames");
-            Assert.AreEqual("Col1>",tbl.Columns[0].Name);
+            Assert.AreEqual("Col1>", tbl.Columns[0].Name);
             Assert.AreEqual("Col1>", tbl.Columns[1].Name);
             Assert.AreEqual("Column3", tbl.Columns[2].Name);
         }
@@ -251,16 +251,16 @@ public void TableDeleteTest()
         [TestMethod]
         public void DeleteTablesFromTemplate()
         {
-            using(var p=new ExcelPackage())
+            using (var p = new ExcelPackage())
             {
-                var ws=p.Workbook.Worksheets.Add("Tablews1");
+                var ws = p.Workbook.Worksheets.Add("Tablews1");
                 ws.Tables.Add(new ExcelAddressBase("A1:C3"), "Table1");
                 ws.Tables.Add(new ExcelAddressBase("D1:G7"), "Table2");
 
                 Assert.AreEqual(2, ws.Tables.Count);
                 p.Save();
 
-                using(var p2=new ExcelPackage(p.Stream))
+                using (var p2 = new ExcelPackage(p.Stream))
                 {
                     ws = p2.Workbook.Worksheets[0];
                     Assert.AreEqual(2, ws.Tables.Count);
@@ -274,7 +274,7 @@ public void DeleteTablesFromTemplate()
                         Assert.AreEqual(0, p3.Workbook.Worksheets[0].Tables.Count);
                     }
                 }
-             }
+            }
         }
         [TestMethod]
         public void ValidateTableSaveLoad()
@@ -394,7 +394,47 @@ public void AddRowShouldAdjustSubtotals()
 
                 SaveAndCleanup(package);
             }
+        }
+        [TestMethod]
+        public void ValidateCalculatedColumn()
+        {
+            using (var package = OpenPackage("TableCalculatedColumn.xlsx", true))
+            {
+                var sheet = package.Workbook.Worksheets.Add("Tables");
+
+                // headers
+                sheet.Cells["C1"].Value = "Month";
+                sheet.Cells["D1"].Value = "Sales";
+                sheet.Cells["E1"].Value = "VAT";
+                sheet.Cells["F1"].Value = "Total";
+                sheet.Cells["G1"].Value = "Formula";
+
+                var rnd = new Random();
+                for (var row = 2; row < 12; row++)
+                {
+                    sheet.Cells[row, 3].Value = new DateTimeFormatInfo().GetMonthName(row);
+                    sheet.Cells[row, 4].Value = rnd.Next(10000, 100000);
+                    sheet.Cells[row, 5].Formula = $"D{row} * 0.25";
+                    sheet.Cells[row, 6].Formula = $"D{row} + E{row}";
+                }
+                sheet.Cells["D2:G13"].Style.Numberformat.Format = "€#,##0.00";
+
+                var range = sheet.Cells["C1:G11"];
 
+                // create the table
+                var table = sheet.Tables.Add(range, "myTable");
+                // configure the table
+                table.ShowHeader = true;
+                table.ShowTotal = true;
+
+                var formula = "mytable[[#this row],[Sales]]+mytable[[#this row],[VAT]]";
+                table.Columns[4].CalculatedColumnFormula = formula;
+                Assert.AreEqual(formula, table.Columns[4].CalculatedColumnFormula);
+                Assert.AreEqual(formula, sheet.Cells["G2"].Formula);
+                Assert.AreEqual(formula, sheet.Cells["G3"].Formula);
+                Assert.AreEqual(formula, sheet.Cells["G11"].Formula);
+                SaveAndCleanup(package);
+            }
         }
     }
 }