Populate RadFlowDocument with different Images when performing a Mail Merge

Updated on Jun 9, 2026

Environment

Version	Product	Author
2021.2.507	RadWordsProcessing	Martin Velikov

Description

This article shows how to populate a RadFlowDocument with different images when you perform a Mail Merge.

Solution

The following example demonstrates how to import a document template with the DocxFormatProvider. It then iterates an array of custom Person elements and inserts different images in the RadFlowDocument header (Headers and Footers) according to the person's account type while performing a Mail Merge.

Add Different Images While Mailmerging

csharp

	private const string DevCraftUltimate = "DevCraft Ultimate";
	private const string Trial = "Trial";

	private static void Main()
	{
		RadFlowDocument template;
		DocxFormatProvider provider = new();

		using (FileStream stream = File.OpenRead("Template.docx"))
		{
			template = provider.Import(stream);
		}

		Person[] personsList = new Person[]
		{
			new Person(name: "John Doe", account: Trial, renewalDate: new DateTime(2021, 4, 2, 8, 30, 52)),
			new Person(name: "Georgia Dunn", account: DevCraftUltimate, renewalDate: new DateTime(2019, 4, 2, 8, 30, 52)),
			new Person(name: "David French", account: DevCraftUltimate, renewalDate: new DateTime(2020, 5, 1, 8, 30, 52)),
		};

		foreach (Person person in personsList)
		{
			// The MailMerge method is expecting a collection of IEnumerable
			RadFlowDocument resultDocument = template.MailMerge(new Person[] { person });

			ImageInline imageInline = new(resultDocument);
			ImageSource imageSource = default;
			if (person.Account == DevCraftUltimate)
			{
				imageSource = new ImageSource(File.OpenRead("Images/Progress_DevCraft_Ultimate.png"), "png");
			}
			else if (person.Account == Trial)
			{
				imageSource = new ImageSource(File.OpenRead("Images/Progress_DevCraft.png"), "png");
			}

			imageInline.Image.ImageSource = imageSource;
			
			Header header = resultDocument.Sections.First().Headers.Add(HeaderFooterType.Default);
			Paragraph headerParagraph = header.Blocks.AddParagraph();
			headerParagraph.Inlines.Add(imageInline);

			string resultFileName = $"result_{person.Name}.docx";
			using (FileStream output = File.OpenWrite(resultFileName))
			{
				provider.Export(resultDocument, output);
			}

			Process.Start(new ProcessStartInfo() { FileName = resultFileName, UseShellExecute = true });
		}
	}

Person Class

csharp

	public class Person
    {
        public string Name
        {
            get; set;
        }

        public string Account
        {
            get; set;
        }

        public DateTime RenewalDate
        {
            get; set;
        }

        public Person(string name, string account, DateTime renewalDate)
        {
            this.Name = name;
            this.Account = account;
            this.RenewalDate = renewalDate;
        }
    }

See Also

• RadFlowDocument
• Mail Merge
• DocxFormatProvider