Merge pull request #6 from DharaniThangarasu/Modify-replace-merge-field-with-HTML-string-sample

Modified the example

Author: gunasekarant

Replace-Merge-field-with-HTML/Console-App-.NET-Framework/Replace-Merge-field-with-HTML/Program.cs

@@ -1,25 +1,29 @@
 using Syncfusion.DocIO.DLS;
+using System.Collections.Generic;
 using System.Data;
 using System.IO;
 
 namespace Replace_Merge_field_with_HTML
 {
  class Program
  {
+ static Dictionary<WParagraph, Dictionary<int, string>> paraToInsertHTML = new Dictionary<WParagraph, Dictionary<int, string>>();
  static void Main(string[] args)
  {
- //Opens the template document
+ //Opens the template document.
  using (WordDocument document = new WordDocument(Path.GetFullPath(@"../../Template.docx")))
  {
- //Creates mail merge events handler to replace merge field with HTML
+ //Creates mail merge events handler to replace merge field with HTML.
  document.MailMerge.MergeField += new MergeFieldEventHandler(MergeFieldEvent);
- //Gets data to perform mail merge
+ //Gets data to perform mail merge.
  DataTable table = GetDataTable();
- //Performs the mail merge
+ //Performs the mail merge.
  document.MailMerge.Execute(table);
- //Removes mail merge events handler
+ //Append HTML to paragraph.
+ InsertHtml();
+ //Removes mail merge events handler.
  document.MailMerge.MergeField -= new MergeFieldEventHandler(MergeFieldEvent);
- //Saves the Word document instance
+ //Saves the Word document instance.
  document.Save(Path.GetFullPath(@"../../Sample.docx"));
  }
  System.Diagnostics.Process.Start(Path.GetFullPath(@"../../Sample.docx"));
@@ -37,13 +41,16 @@ public static void MergeFieldEvent(object sender, MergeFieldEventArgs args)
  {
  if (args.FieldName.Equals("ProductList"))
  {
- string text = args.FieldValue as string;
+ //Gets the current merge field owner paragraph.
  WParagraph paragraph = args.CurrentMergeField.OwnerParagraph;
- int paraIndex = paragraph.OwnerTextBody.ChildEntities.IndexOf(paragraph);
- int fieldIndex = paragraph.ChildEntities.IndexOf(args.CurrentMergeField);
- //Appends HTML string at the specified position of the document body contents
- paragraph.OwnerTextBody.InsertXHTML(args.FieldValue.ToString(), paraIndex, fieldIndex);
- //Resets the field value
+ //Gets the current merge field index in the current paragraph.
+ int mergeFieldIndex = paragraph.ChildEntities.IndexOf(args.CurrentMergeField);
+ //Maintain HTML in collection.
+ Dictionary<int, string> fieldValues = new Dictionary<int, string>();
+ fieldValues.Add(mergeFieldIndex, args.FieldValue.ToString());
+ //Maintain paragraph in collection.
+ paraToInsertHTML.Add(paragraph, fieldValues);
+ //Set field value as empty.
  args.Text = string.Empty;
  }
  }
@@ -64,11 +71,32 @@ private static DataTable GetDataTable()
  datarow["CustomerName"] = "Nancy Davolio";
  datarow["Address"] = "59 rue de I'Abbaye, Reims 51100, France";
  datarow["Phone"] = "1-888-936-8638";
- //Reads HTML string from the file
+ //Reads HTML string from the file.
  string htmlString = File.ReadAllText(@"../../File.html");
  datarow["ProductList"] = htmlString;
  return dataTable;
  }
+ /// <summary>
+ /// Append HTML to paragraph.
+ /// </summary>
+ private static void InsertHtml()
+ {
+ //Iterates through each item in the dictionary.
+ foreach (KeyValuePair<WParagraph, Dictionary<int, string>> dictionaryItems in paraToInsertHTML)
+ {
+ WParagraph paragraph = dictionaryItems.Key as WParagraph;
+ Dictionary<int, string> values = dictionaryItems.Value as Dictionary<int, string>;
+ //Iterates through each value in the dictionary.
+ foreach (KeyValuePair<int, string> valuePair in values)
+ {
+ int index = valuePair.Key;
+ string fieldValue = valuePair.Value;
+ //Inserts HTML string at the same position of mergefield in Word document.
+ paragraph.OwnerTextBody.InsertXHTML(fieldValue, paragraph.OwnerTextBody.ChildEntities.IndexOf(paragraph), index);
+ }
+ }
+ paraToInsertHTML.Clear();
+ }
  #endregion
  }
 }