From 6b9e84ef771c5df2f697456e61b9cbde967935bb Mon Sep 17 00:00:00 2001
From: zbyszard <florcmat@gmail.com>
Date: Mon, 6 Nov 2023 11:43:27 +0100
Subject: [PATCH] make it possible to set UseZip64 flag

---
 ooxml/XSSF/Streaming/SXSSFWorkbook.cs | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/ooxml/XSSF/Streaming/SXSSFWorkbook.cs b/ooxml/XSSF/Streaming/SXSSFWorkbook.cs
index 45ff5adcd..888355792 100644
--- a/ooxml/XSSF/Streaming/SXSSFWorkbook.cs
+++ b/ooxml/XSSF/Streaming/SXSSFWorkbook.cs
@@ -101,6 +101,12 @@ public int RandomAccessWindowSize
         /// </summary>
         private bool _compressTmpFiles = false;
 
+        /// <summary>
+        /// setting this flag On allows to write large files;
+        /// however, this can lead to compatibility issues
+        /// </summary>
+        private UseZip64 _useZip64 = UseZip64.Off;
+
         /// <summary>
         /// shared string table - a cache of strings in this workbook.
         /// </summary>
@@ -152,6 +158,13 @@ public bool IsHidden
             set { XssfWorkbook.IsHidden = value; }
         }
 
+        public UseZip64 UseZip64
+        {
+            get { return _useZip64; }
+
+            set { _useZip64 = value; }
+        }
+
 
         #region Constructors
         /**
@@ -444,7 +457,7 @@ private void InjectData(FileInfo zipfile, Stream outStream, bool leaveOpen)
                 try
                 {
                     zos.IsStreamOwner = !leaveOpen;
-                    zos.UseZip64 = UseZip64.Off;
+                    zos.UseZip64 = _useZip64;
                     //ZipEntrySource zipEntrySource = new ZipFileZipEntrySource(zip);
                     //var en =  zipEntrySource.Entries;
                     var en = zip.GetEnumerator();