Added fix for #1628. Corrected ids on deleting tables (#1634)

modified:   EPPlusTest/Issues/LegacyTests/Issues.cs

docs/articles/fixedissues.md

@@ -2,8 +2,7 @@
 
 
 
-
-
+* Deleting and adding a table with multiple worksheets no longer gives the added table an invalid id. 
 * Ensured ExcelPictures are sized correctly when copying worksheets
 * Fixed issue where adding rows to a Table that contained error values would throw error or generate a corrupt workbook. When the table was the source range of a pivot table.
 * Fixed ExcelErrorValues GetHashCode and Equals methods to return appropriate Type value.

src/EPPlus/Table/ExcelTableCollection.cs

@@ -161,7 +161,6 @@ public void Delete(ExcelTable Table, bool ClearRange = false)
                     {
                         if (t.Id > Table.Id) t.Id--;
                     }
-                    Table.WorkSheet.Workbook._nextTableID--;
                 }
                 foreach(var name in _tableNames.Keys.ToArray())
                 { 

src/EPPlusTest/Issues/LegacyTests/Issues.cs

@@ -26,6 +26,7 @@ Date               Author                       Change
  *******************************************************************************
   01/27/2020         EPPlus Software AB       Initial release EPPlus 5
  *******************************************************************************/
+using EPPlusTest.Table;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 using Newtonsoft.Json;
 using OfficeOpenXml;

src/EPPlusTest/Table/TableTests.cs

@@ -1044,5 +1044,27 @@ public void ThrowsWhenAttemptingToAddSameName()
                 table.Columns[1].Name = "AColumn";
             }
         }
+
+        [TestMethod]
+        public void DeleteAndAddTableTest()
+        {
+            using (var package = OpenPackage("tableTestpck.xlsx", true))
+            {
+                var ws = package.Workbook.Worksheets.Add("WsCheck");
+
+                var table = ws.Tables.Add(ws.Cells["A1:C10"], "ATable");
+
+                var ws2 = package.Workbook.Worksheets.Add("WsCheck2");
+                var ws3 = package.Workbook.Worksheets.Add("WsCheck3");
+
+                ws.Tables.Delete(table);
+
+                var table2 = ws.Tables.Add(ws.Cells["A1:C10"], "ATable");
+
+                Assert.IsTrue(table2.Id > 0);
+
+                SaveAndCleanup(package);
+            }
+        }
     }
 }