Ensure that new table doesn't overlap with existing autofilter

Author: igitur

ClosedXML/Excel/XLWorksheet.cs

@@ -1590,7 +1590,7 @@ public IXLTable Table(XLRange range, Boolean addToTables, Boolean setAutofilter
 
         public IXLTable Table(XLRange range, String name, Boolean addToTables, Boolean setAutofilter = true)
         {
-            CheckRangeNotInTable(range);
+            CheckRangeNotOverlappingOtherEntities(range);
             XLRangeAddress rangeAddress;
             if (range.Rows().Count() == 1)
             {
@@ -1617,11 +1617,16 @@ public IXLTable Table(XLRange range, String name, Boolean addToTables, Boolean s
             return table;
         }
 
-        private void CheckRangeNotInTable(XLRange range)
+        private void CheckRangeNotOverlappingOtherEntities(XLRange range)
         {
-            var overlappingTables = Tables.Where(t => t.RangeUsed().Intersects(range));
-            if (overlappingTables.Any())
-                throw new ArgumentException(nameof(range), $"The range {range.RangeAddress.ToStringRelative(true)} is already part of table '{overlappingTables.First().Name}'");
+            // Check that the range doesn't overlap with any existing tables
+            var firstOverlappingTable = Tables.FirstOrDefault(t => t.RangeUsed().Intersects(range));
+            if (firstOverlappingTable != null)
+                throw new InvalidOperationException($"The range {range.RangeAddress.ToStringRelative(includeSheet: true)} is already part of table '{firstOverlappingTable.Name}'");
+
+            // Check that the range doesn't overlap with any filters
+            if (AutoFilter.IsEnabled && this.AutoFilter.Range.Intersects(range))
+                throw new InvalidOperationException($"The range {range.RangeAddress.ToStringRelative(includeSheet: true)} overlaps with the worksheet's autofilter.");
         }
 
         private string GetNewTableName(string baseName)

ClosedXML_Tests/Excel/Tables/TablesTests.cs

@@ -552,7 +552,7 @@ public void TableNameCannotBeValidCellName()
             }
         }
 
-       [Test]
+        [Test]
         public void CanDeleteTableField()
         {
             var l = new List<TestObjectWithAttributes>()
@@ -895,10 +895,28 @@ public void CannotCreateDuplicateTablesOverSameRange()
             {
                 IXLWorksheet ws = wb.AddWorksheet("Sheet1");
                 ws.FirstCell().InsertTable(l);
-                Assert.Throws<ArgumentException>(() => ws.RangeUsed().CreateTable());
+                Assert.Throws<InvalidOperationException>(() => ws.RangeUsed().CreateTable());
             }
         }
 
+        [Test]
+        public void CannotCreateTableOverExistingAutoFilter()
+        {
+            using var wb = new XLWorkbook();
+
+            var data = Enumerable.Range(1, 10).Select(i => new
+            {
+                Index = i,
+                String = $"String {i}"
+            });
+
+            var ws = wb.AddWorksheet();
+            ws.FirstCell().InsertTable(data, createTable: false);
+            ws.RangeUsed().SetAutoFilter().Column(1).AddFilter(5);
+
+            Assert.Throws<InvalidOperationException>(() => ws.RangeUsed().CreateTable());
+        }
+
         [Test]
         public void CopyTableSameWorksheet()
         {