Initial commit of the ClosedXML library

Establishes the foundational structure, core Excel functionality, and tooling. - Implements base components for cells, ranges, columns, and rows. - Integrates a custom calculation engine with a wide range of Excel functions. - Adds comprehensive support for styling, conditional formatting, data validation, comments, pictures, and charts. - Configures build setup, project metadata (NuGet), and developer guidelines. - Includes editor and Git attributes for consistent code style and line endings.
2026-06-23 11:02:53 -05:00
parent 28bc05cf54
commit 2cd6df6481
1092 changed files with 97270 additions and 408 deletions
@@ -0,0 +1,51 @@
+using ClosedXML.Excel;
+using NUnit.Framework;
+using System.IO;
+using System.Linq;
+
+namespace ClosedXML_Tests.Excel
+{
+    [TestFixture]
+    public class HeaderFooterTests
+    {
+        [Test]
+        public void CanChangeWorksheetHeader()
+        {
+            var wb = new XLWorkbook();
+            IXLWorksheet ws = wb.AddWorksheet("Sheet1");
+
+            ws.PageSetup.Header.Center.AddText("Initial page header", XLHFOccurrence.EvenPages);
+
+            var ms = new MemoryStream();
+            wb.SaveAs(ms, true);
+
+            wb = new XLWorkbook(ms);
+            ws = wb.Worksheets.First();
+
+            ws.PageSetup.Header.Center.Clear();
+            ws.PageSetup.Header.Center.AddText("Changed header", XLHFOccurrence.EvenPages);
+
+            wb.SaveAs(ms, true);
+
+            wb = new XLWorkbook(ms);
+            ws = wb.Worksheets.First();
+
+            var newHeader = ws.PageSetup.Header.Center.GetText(XLHFOccurrence.EvenPages);
+            Assert.AreEqual("Changed header", newHeader);
+        }
+
+        [TestCase("")]
+        [TestCase("&L&C&\"Arial\"&9 19-10-2017 \n&9&\"Arial\" &P    &N &R")] // https://github.com/ClosedXML/ClosedXML/issues/563
+        public void CanSetHeaderFooter(string s)
+        {
+            using (var wb = new XLWorkbook())
+            {
+                var ws = wb.AddWorksheet("Sheet1");
+                {
+                    var header = ws.PageSetup.Header as XLHeaderFooter;
+                    header.SetInnerText(XLHFOccurrence.AllPages, s);
+                }
+            }
+        }
+    }
+}