Addressed the feedbacks

Author: VijayadharshiniMathiyalagan

Fields/Add-DocVariable-in-DisplayBarCode/.NET/Add-DocVariable-in-DisplayBarCode/Program.cs

@@ -2,24 +2,26 @@
 using Syncfusion.DocIO;
 
 // Creates a new instance of WordDocument (empty Word document).
-WordDocument wordDocument = new WordDocument();
-// Adds a section to the document.
-IWSection section = wordDocument.AddSection();
-// Adds a paragraph to the section.
-IWParagraph paragraph = section.AddParagraph();
-// Adds a document variable named "Barcode" with a value of "123456".
-wordDocument.Variables.Add("Barcode", "123456");
-// Appends a field to the paragraph. The field type is set as FieldUnknown initially.
-WField field = paragraph.AppendField("DISPLAYBARCODE ", Syncfusion.DocIO.FieldType.FieldUnknown) as WField;
-// Specifies the field code for the barcode.
-InsertBarcodeField(paragraph, field);
-// Updates all document fields to reflect changes.
-wordDocument.UpdateDocumentFields();
-// Saves the output Word document to a specified file stream in DOCX format.
-FileStream stream = new FileStream(Path.GetFullPath(@"Output/Result.docx"), FileMode.OpenOrCreate);
-wordDocument.Save(stream, FormatType.Docx);
-// Closes the file stream to release the resource.
-stream.Close();
+using (WordDocument wordDocument = new WordDocument())
+{
+    // Adds a section to the document.
+    IWSection section = wordDocument.AddSection();
+    // Adds a paragraph to the section.
+    IWParagraph paragraph = section.AddParagraph();
+    // Adds a document variable named "Barcode" with a value of "123456".
+    wordDocument.Variables.Add("Barcode", "123456");
+    // Appends a field to the paragraph. The field type is set as FieldUnknown initially.
+    WField field = paragraph.AppendField("DISPLAYBARCODE ", Syncfusion.DocIO.FieldType.FieldUnknown) as WField;
+    // Specifies the field code for the barcode.
+    InsertBarcodeField(paragraph, field);
+    // Updates all document fields to reflect changes.
+    wordDocument.UpdateDocumentFields();
+    // Saves the output Word document to a specified file stream in DOCX format.
+    using (FileStream stream = new FileStream(Path.GetFullPath(@"Output/Result.docx"), FileMode.OpenOrCreate))
+    {
+        wordDocument.Save(stream, FormatType.Docx);
+    }
+}
 
 /// <summary>
 /// Inserts the field code with a nested field.
@@ -28,16 +30,12 @@ static void InsertBarcodeField(IWParagraph paragraph, WField? field)
 {
     // Get the index of the field in the paragraph to insert the field code.
     int fieldIndex = paragraph.Items.IndexOf(field) + 1;
-
     // Add the field code for the barcode.
     field.FieldCode = "DISPLAYBARCODE ";
-
     // Increment field index for further insertion.
     fieldIndex++;
-
     // Insert document variables into the field code at the specified index.
     InsertDocVariables("Barcode", ref fieldIndex, paragraph);
-
     // Insert the barcode type (e.g., CODE128) into the paragraph.
     InsertText(" CODE128", ref fieldIndex, paragraph as WParagraph);
 }
@@ -50,10 +48,8 @@ static void InsertText(string text, ref int fieldIndex, WParagraph paragraph)
     // Create a new text range with the specified text.
     WTextRange textRange = new WTextRange(paragraph.Document);
     textRange.Text = text;
-
     // Insert the text range as a field code item at the specified index.
     paragraph.Items.Insert(fieldIndex, textRange);
-
     // Increment the field index for subsequent insertions.
     fieldIndex++;
 }
@@ -66,13 +62,10 @@ static void InsertDocVariables(string fieldName, ref int fieldIndex, IWParagraph
     // Create a new paragraph to hold the document variable field.
     WParagraph para = new WParagraph(paragraph.Document);
     para.AppendField(fieldName, FieldType.FieldDocVariable);
-
     // Get the count of child entities in the paragraph (should be 1 for the field).
     int count = para.ChildEntities.Count;
-
     // Insert the field into the original paragraph, ensuring the complete field structure is added.
     paragraph.ChildEntities.Insert(fieldIndex, para.ChildEntities[0]);
-
     // Increment the field index based on the count of inserted entities.
     fieldIndex += count;
 }