How to Change Font of Hindi Text During Mail Merge in .Net Core Word?

Syncfusion; Essential; DocIO is a .NET Word library used to create, read, edit, and convert Word documents programmatically without Microsoft Word or interop dependencies. Using this library, you can change the font of Hindi text during mail merge in a Word document using C#.

Steps to change the font of Hindi text during mail merge in a Word document:

1. Create a new .NET Core console application project.
2. Install the Syncfusion.DocIO.Net.Core NuGet package as a reference to your project from NuGet.org.
   
   

3. Include the following namespaces in the Program.cs file

C#

using Syncfusion.DocIO.DLS;
using Syncfusion.DocIO;

4. Use the following code example to change the font of Hindi text during mail merge in a Word document.

C#

using (FileStream fileStream = new FileStream(Path.GetFullPath(@"Data/Template.docx"), FileMode.Open, FileAccess.ReadWrite))
{
    //Loads an existing Word document into DocIO instance.
    using (WordDocument document = new WordDocument(fileStream, FormatType.Automatic))
    {
        string[] fieldNames = new string[] { "EmployeeId", "Name", "Phone", "City" };
        string[] fieldValues = new string[] { "1001", "नैन्सी डेवियलो", "+122-2222222", "London" };
        // Uses the mail merge events to perform the conditional formatting during runtime.
        document.MailMerge.MergeField += new MergeFieldEventHandler(ApplyFontForHindiText);
        //Performs the mail merge.
        document.MailMerge.Execute(fieldNames, fieldValues);
        //Creates file stream.
        using (FileStream outputStream = new FileStream(Path.GetFullPath(@"Output/Result.docx"), FileMode.Create, FileAccess.ReadWrite))
        {
            //Saves the Word document to file stream.
            document.Save(outputStream, FormatType.Docx);
        }
    }
}

5. Use the following code example to handle the MergeField event to perform the conditional formatting during runtime.

C#

private static void ApplyFontForHindiText(object sender, MergeFieldEventArgs args)
{
    string fieldValue = args.FieldValue.ToString();
    //If the field value contains Hindi characters, then apply the font.
    bool containsHindi = ContainsHindiCharacters(fieldValue);
    if (containsHindi)
    {
        args.TextRange.CharacterFormat.FontName = "Nirmala UI";
    }
}

6. Use the following code example to check whether the given character is a Hindi character or not.

C#

private static bool IsHindiChar(char character)
{
    //Hindi characters come under the Devanagari scripts.
    //The Unicode Standard defines three blocks for Devanagari. https://en.wikipedia.org/wiki/Devanagari#Unicode              
    return ((character >= '\u0900' && character <= '\u097f') //Devanagari (U+0900–U+097F), https://en.wikipedia.org/wiki/Devanagari_(Unicode_block)
        || (character >= '\ua8e0' && character <= '\ua8ff') //Devanagari Extended (U+A8E0–U+A8FF), https://en.wikipedia.org/wiki/Devanagari_Extended
        || (character >= '\u1cd0' && character <= '\u1cff')); //Vedic Extensions (U+1CD0–U+1CFF), https://en.wikipedia.org/wiki/Vedic_Extensions
}

7. Use the following code example to check whether the given text contains Hindi characters or not.

C#

private static bool ContainsHindiCharacters(string text)
{
    foreach (char character in text)
    {
        if (IsHindiChar(character))
        {
            return true; // If any Hindi character is found, return true.
        }
    }
    return false; // No Hindi characters were found.
}

You can download a complete working sample to change the font of Hindi text during mail merge in a Word document from GitHub.

Take a moment to peruse the documentation where you can find basic Word document processing options along with the features like mail merge, merge, split, and compare Word documents, find and replace text in the Word document, protect the Word documents, and most importantly, the PDF and Image conversions with code examples.

Conclusion

I hope you enjoyed learning about how to change font of hindi text during mail merge in .Net Core Word.

You can refer to our ASP.NET Core DocIO feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our ASP.NET Core DocIO example to understand how to create and manipulate data.

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