Merge pull request #4 from fahadadeel/main

Add "ProtectWorksheet" Feature

Author: fileformat-cells

FileFormat.Cells/Worksheet.cs

@@ -143,7 +143,7 @@ public void saveDataToSheet(int sheetIndex)
             }
 
             // Save the worksheet data
-            worksheet.Save();
+            //worksheet.Save();
 
 
 
@@ -172,6 +172,39 @@ public void AddFormulaToCell(string cellRef, UInt32 rowIndex, string formula)
             sheetData.sheetData.Append(row);
         }
 
+        public void ProtectSheet(string password, int sheetIndex)
+        {
+            SheetProtection sheetProtection = new SheetProtection()
+            {
+                Sheet = true,
+                Objects = true,
+                Scenarios = true,
+                Password = password,
+            };
+
+            var targetSheet = this.spreadsheetDocument.WorkbookPart.WorksheetParts.ElementAt(sheetIndex).Worksheet;
+
+            if (targetSheet.Elements<SheetProtection>().Any())
+            {
+                targetSheet.Elements<SheetProtection>().First().Remove();
+            }
+
+            targetSheet.InsertAt(sheetProtection, 0);
+        }
+
+        /// <summary>
+        /// Unprotects the worksheet.
+        /// </summary>
+        public void UnProtectSheet()
+        {
+            // Remove existing SheetProtection if exists
+            if (worksheet.Elements<SheetProtection>().Any())
+            {
+                worksheet.Elements<SheetProtection>().First().Remove();
+            }
+        }
+
+
         private static List<UInt32> AddStyle(ref Stylesheet stylesheet)
         {
             UInt32 Fontid = 0, Fillid = 0, Cellformatid = 0;