From 0c052e08f3dc855597c6e813bc73371bd7cf5faf Mon Sep 17 00:00:00 2001
From: Ramya Sivakumar <ramya.s@syncfusion.com>
Date: Mon, 27 Oct 2025 19:50:39 +0530
Subject: [PATCH] 988874-ModifyStreams-Working with Formulas

---
 .../NET/Working-with-Formulas.md              | 89 ++++---------------
 1 file changed, 17 insertions(+), 72 deletions(-)

diff --git a/Document-Processing/Excel/Excel-Library/NET/Working-with-Formulas.md b/Document-Processing/Excel/Excel-Library/NET/Working-with-Formulas.md
index 59cb65336..58e5472b1 100644
--- a/Document-Processing/Excel/Excel-Library/NET/Working-with-Formulas.md
+++ b/Document-Processing/Excel/Excel-Library/NET/Working-with-Formulas.md
@@ -90,12 +90,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())
 
 	#region Save
 	//Saving the workbook
-	FileStream outputStream = new FileStream(Path.GetFullPath("Output/Formula.xlsx"), FileMode.Create, FileAccess.Write);
-	workbook.SaveAs(outputStream);
+	workbook.SaveAs(Path.GetFullPath("Output/Formula.xlsx"));
 	#endregion
-
-	//Dispose streams
-	outputStream.Dispose();
 }
 {% endhighlight %}
 
@@ -163,12 +159,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())
 
 	#region Save
 	//Saving the workbook
-	FileStream outputStream = new FileStream(Path.GetFullPath("Output/Formula.xlsx"), FileMode.Create, FileAccess.Write);
-	workbook.SaveAs(outputStream);
+	workbook.SaveAs(Path.GetFullPath("Output/Formula.xlsx"));
 	#endregion
-
-	//Dispose streams
-	outputStream.Dispose();
 }
 {% endhighlight %}
 
@@ -261,12 +253,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())
 
 	#region Save
 	//Saving the workbook
-	FileStream outputStream = new FileStream(Path.GetFullPath("Output/Formula.xlsx"), FileMode.Create, FileAccess.Write);
-	workbook.SaveAs(outputStream);
+	workbook.SaveAs(Path.GetFullPath("Output/Formula.xlsx"));
 	#endregion
-
-	//Dispose streams
-	outputStream.Dispose();
 }
 {% endhighlight %}
 
@@ -344,12 +332,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())
 
 	#region Save
 	//Saving the workbook
-	FileStream outputStream = new FileStream(Path.GetFullPath("Output/Formula.xlsx"), FileMode.Create, FileAccess.Write);
-	workbook.SaveAs(outputStream);
+	workbook.SaveAs(Path.GetFullPath("Output/Formula.xlsx"));
 	#endregion
-
-	//Dispose streams
-	outputStream.Dispose();
 }
 //Output
 
@@ -469,12 +453,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())
 
 	#region Save
 	//Saving the workbook
-	FileStream outputStream = new FileStream(Path.GetFullPath("Output/Formula.xlsx"), FileMode.Create, FileAccess.Write);
-	workbook.SaveAs(outputStream);
+	workbook.SaveAs(Path.GetFullPath("Output/Formula.xlsx"));
 	#endregion
-
-	//Dispose streams
-	outputStream.Dispose();
 }
 {% endhighlight %}
 
@@ -537,12 +517,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())
 
 	#region Save
 	//Saving the workbook
-	FileStream outputStream = new FileStream(Path.GetFullPath("Output/Formula.xlsx"), FileMode.Create, FileAccess.Write);
-	workbook.SaveAs(outputStream);
+	workbook.SaveAs(Path.GetFullPath("Output/Formula.xlsx"));	
 	#endregion
-
-	//Dispose streams
-	outputStream.Dispose();
 }
 {% endhighlight %}
 
@@ -615,12 +591,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())
 
 	#region Save
 	//Saving the workbook
-	FileStream outputStream = new FileStream(Path.GetFullPath("Output/IncrementalFormula.xlsx"), FileMode.Create, FileAccess.Write);
-	workbook.SaveAs(outputStream);
+	workbook.SaveAs(Path.GetFullPath("Output/IncrementalFormula.xlsx"));
 	#endregion
-
-	//Dispose streams
-	outputStream.Dispose();
 }
 {% endhighlight %}
 
@@ -686,12 +658,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())
 
 	#region Save
 	//Saving the workbook
-	FileStream outputStream = new FileStream(Path.GetFullPath("Output/ExternalFormula.xlsx"), FileMode.Create, FileAccess.Write);
-	workbook.SaveAs(outputStream);
+	workbook.SaveAs(Path.GetFullPath("Output/ExternalFormula.xlsx"));
 	#endregion
-
-	//Dispose streams
-	outputStream.Dispose();
 }
 {% endhighlight %}
 
@@ -768,12 +736,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())
 
 	#region Save
 	//Saving the workbook
-	FileStream outputStream = new FileStream(Path.GetFullPath("Output/CalculatedColumn.xlsx"), FileMode.Create, FileAccess.Write);
-	workbook.SaveAs(outputStream);
+	workbook.SaveAs(Path.GetFullPath("Output/CalculatedColumn.xlsx"));
 	#endregion
-
-	//Dispose streams
-	outputStream.Dispose();
 }
 {% endhighlight %}
 
@@ -2098,10 +2062,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())
   //Use the function. The expected result is 30
   sheet.Range["A3"].Formula = "AddInFunction(10,20)";
 
-  //Saving the workbook as stream
-  FileStream stream = new FileStream("AddIn.xlsx", FileMode.Create, FileAccess.ReadWrite);
-  workbook.SaveAs(stream);
-  stream.Dispose();
+  //Saving the workbook
+  workbook.SaveAs(Path.GetFullPath("Output/AddIn.xlsx"));
 }
 {% endhighlight %}
 
@@ -2251,12 +2213,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())
 
 	#region Save
 	//Saving the workbook
-	FileStream outputStream = new FileStream(Path.GetFullPath("Output/Formula.xlsx"), FileMode.Create, FileAccess.Write);
-	workbook.SaveAs(outputStream);
+	workbook.SaveAs(Path.GetFullPath("Output/Formula.xlsx"));
 	#endregion
-
-	//Dispose streams
-	outputStream.Dispose();
 }
 {% endhighlight %}
 
@@ -2362,9 +2320,8 @@ Following code illustrates on how to ignore or set error indicators.
 using (ExcelEngine excelEngine = new ExcelEngine())
 {
 	IApplication application = excelEngine.Excel;
-	application.DefaultVersion = ExcelVersion.Xlsx;
-	FileStream inputStream = new FileStream(Path.GetFullPath(@"Data/InputTemplate.xlsx"), FileMode.Open, FileAccess.Read);
-	IWorkbook workbook = application.Workbooks.Open(inputStream);
+	application.DefaultVersion = ExcelVersion.Xlsx;	
+	IWorkbook workbook = application.Workbooks.Open(Path.GetFullPath(@"Data/InputTemplate.xlsx"));
 	IWorksheet sheet = workbook.Worksheets[0];
 
 	//Sets warning if number is entered as text.
@@ -2372,12 +2329,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())
 
 	#region Save
 	//Saving the workbook
-	FileStream outputStream = new FileStream(Path.GetFullPath("Output/FormulaAuditing.xlsx"), FileMode.Create, FileAccess.Write);
-	workbook.SaveAs(outputStream);
+	workbook.SaveAs(Path.GetFullPath("Output/FormulaAuditing.xlsx"));
 	#endregion
-
-	//Dispose streams
-	outputStream.Dispose();
 }
 {% endhighlight %}
 
@@ -2455,12 +2408,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())
 
 	#region Save
 	//Saving the workbook
-	FileStream outputStream = new FileStream(Path.GetFullPath("Output/CalculationMode.xlsx"), FileMode.Create, FileAccess.Write);
-	workbook.SaveAs(outputStream);
+	workbook.SaveAs(Path.GetFullPath("Output/CalculationMode.xlsx"));
 	#endregion
-
-	//Dispose streams
-	outputStream.Dispose();
 }
 {% endhighlight %}
 
@@ -2551,12 +2500,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())
 
 	#region Save
 	//Saving the workbook
-	FileStream outputStream = new FileStream(Path.GetFullPath("Output/Iteration.xlsx"), FileMode.Create, FileAccess.Write);
-	workbook.SaveAs(outputStream);
+	workbook.SaveAs(Path.GetFullPath("Output/Iteration.xlsx"));
 	#endregion
-
-	//Dispose streams
-	outputStream.Dispose();
 }
 {% endhighlight %}