WriteEmptyStringAsNull implementation (#725)

Co-authored-by: Ivan Jiang <[email protected]>
mini-software · Feb 12, 2025 · d845ee4 · d845ee4
1 parent 8136154
commit d845ee4
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Showing 2 changed files with 2 additions and 1 deletion.
diff --git a/src/MiniExcel/OpenXml/ExcelOpenXmlSheetWriter.cs b/src/MiniExcel/OpenXml/ExcelOpenXmlSheetWriter.cs
@@ -338,7 +338,7 @@ private void WriteCell(MiniExcelStreamWriter writer, int rowIndex, int cellIndex
             }
 
             var columnReference = ExcelOpenXmlUtils.ConvertXyToCell(cellIndex, rowIndex);
-            var valueIsNull = value is null || value is DBNull;
+            var valueIsNull = value is null || value is DBNull || (_configuration.WriteEmptyStringAsNull && value is String && value == string.Empty);
 
             if (_configuration.EnableWriteNullValueCell && valueIsNull)
             {

diff --git a/src/MiniExcel/OpenXml/OpenXmlConfiguration.cs b/src/MiniExcel/OpenXml/OpenXmlConfiguration.cs
@@ -13,6 +13,7 @@ public class OpenXmlConfiguration : Configuration
         public bool EnableConvertByteArray { get; set; } = true;
         public bool IgnoreTemplateParameterMissing { get; set; } = true;
         public bool EnableWriteNullValueCell { get; set; } = true;
+        public bool WriteEmptyStringAsNull { get; set; } = false;
         public bool EnableSharedStringCache { get; set; } = true;
         public long SharedStringCacheSize { get; set; } = 5 * 1024 * 1024;
         public DynamicExcelSheet[] DynamicSheets { get; set; }