Dyn 5314 open xml (#13647)

* Fix String display

* Adding Unit test

* Checking Formula

Author: jesusalvino

src/Libraries/DSOffice/OpenXmlHelper.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.IO;
@@ -228,7 +228,7 @@ internal static bool Write(string filePath, string sheetName, object[][] data, i
                             currentColumnIndex++;
                             continue;
                         }
-
+                  
                         SetCellValue(data[i][j], cell, sharedStringTable, stylesheet, writeAsString);
                         currentColumnIndex++;
                     }
@@ -396,8 +396,15 @@ private static object GetCellValue(Cell cell, SharedStringTable sharedStringTabl
                 }
                 else
                 {
-                    // Default to raw string value for inline strings and unknown types.
-                    return cell.InnerText;
+                    if (cell.CellFormula == null)
+                    {
+                        // Default to raw string value for inline strings and unknown types.
+                        return cell.InnerText;
+                    }
+                    else
+                    {
+                        return cell.CellValue.Text;
+                    }
                 }
             }
 

test/Libraries/DynamoMSOfficeTests/ExcelTests.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.IO;
@@ -1433,5 +1433,16 @@ public void ExportCSVTest()
             //Confirm it's correct
             Assert.AreEqual(data, Data.ImportCSV(fn));
         }
+
+        [Test]
+        [Category("UnitTests")]
+        public static void OpemXML_ImportExcelTest()
+        {
+            string filePath = Path.Combine(TestDirectory, @"core\importExport\OpenXML-ImportExcel.xlsx");
+            var data = Data.OpenXMLImportExcel(filePath, "worksheet1", 0, 0, false);
+            string cellValueWithFormula = data[0][2].ToString();
+            string cellValueWithoutFormula = data[1][2].ToString();
+            Assert.AreEqual(cellValueWithFormula, cellValueWithoutFormula);
+        }
     }
 }