InsertHtml

InsertHtml(string)

Inserts an HTML string into the document.

public void InsertHtml(string html)
ParameterTypeDescription
htmlStringAn HTML string to insert into the document.

Remarks

You can use this method to insert an HTML fragment or whole HTML document.

Examples

Shows how to use a document builder to insert html content into a document.

Document doc = new Document();
DocumentBuilder builder = new DocumentBuilder(doc);

const string html = "<p align='right'>Paragraph right</p>" + 
                    "<b>Implicit paragraph left</b>" +
                    "<div align='center'>Div center</div>" + 
                    "<h1 align='left'>Heading 1 left.</h1>";

builder.InsertHtml(html);

// Inserting HTML code parses the formatting of each element into equivalent document text formatting.
ParagraphCollection paragraphs = doc.FirstSection.Body.Paragraphs;

Assert.AreEqual("Paragraph right", paragraphs[0].GetText().Trim());
Assert.AreEqual(ParagraphAlignment.Right, paragraphs[0].ParagraphFormat.Alignment);

Assert.AreEqual("Implicit paragraph left", paragraphs[1].GetText().Trim());
Assert.AreEqual(ParagraphAlignment.Left, paragraphs[1].ParagraphFormat.Alignment);
Assert.True(paragraphs[1].Runs[0].Font.Bold);

Assert.AreEqual("Div center", paragraphs[2].GetText().Trim());
Assert.AreEqual(ParagraphAlignment.Center, paragraphs[2].ParagraphFormat.Alignment);

Assert.AreEqual("Heading 1 left.", paragraphs[3].GetText().Trim());
Assert.AreEqual("Heading 1", paragraphs[3].ParagraphFormat.Style.Name);

doc.Save(ArtifactsDir + "DocumentBuilder.InsertHtml.docx");

Shows how to execute a mail merge with a custom callback that handles merge data in the form of HTML documents.

public void MergeHtml()
{
    Document doc = new Document();
    DocumentBuilder builder = new DocumentBuilder(doc);

    builder.InsertField(@"MERGEFIELD  html_Title  \b Content");
    builder.InsertField(@"MERGEFIELD  html_Body  \b Content");

    object[] mergeData =
    {
        "<html>" +
            "<h1>" +
                "<span style=\"color: #0000ff; font-family: Arial;\">Hello World!</span>" +
            "</h1>" +
        "</html>", 

        "<html>" +
            "<blockquote>" +
                "<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p>" +
            "</blockquote>" +
        "</html>"
    };

    doc.MailMerge.FieldMergingCallback = new HandleMergeFieldInsertHtml();
    doc.MailMerge.Execute(new[] { "html_Title", "html_Body" }, mergeData);

    doc.Save(ArtifactsDir + "MailMergeEvent.MergeHtml.docx");
}

/// <summary>
/// If the mail merge encounters a MERGEFIELD whose name starts with the "html_" prefix,
/// this callback parses its merge data as HTML content and adds the result to the document location of the MERGEFIELD.
/// </summary>
private class HandleMergeFieldInsertHtml : IFieldMergingCallback
{
    /// <summary>
    /// Called when a mail merge merges data into a MERGEFIELD.
    /// </summary>
    void IFieldMergingCallback.FieldMerging(FieldMergingArgs args)
    {
        if (args.DocumentFieldName.StartsWith("html_") && args.Field.GetFieldCode().Contains("\\b"))
        {
            // Add parsed HTML data to the document's body.
            DocumentBuilder builder = new DocumentBuilder(args.Document);
            builder.MoveToMergeField(args.DocumentFieldName);
            builder.InsertHtml((string)args.FieldValue);

            // Since we have already inserted the merged content manually,
            // we will not need to respond to this event by returning content via the "Text" property. 
            args.Text = string.Empty;
        }
    }

    void IFieldMergingCallback.ImageFieldMerging(ImageFieldMergingArgs args)
    {
        // Do nothing.
    }
}

See Also

InsertHtml(string, bool)

Inserts an HTML string into the document.

public void InsertHtml(string html, bool useBuilderFormatting)
ParameterTypeDescription
htmlStringAn HTML string to insert into the document.
useBuilderFormattingBooleanA value indicating whether formatting specified in DocumentBuilder is used as base formatting for text imported from HTML.

Remarks

You can use this method to insert an HTML fragment or whole HTML document.

When useBuilderFormatting is false, DocumentBuilder formating is ignored and formatting of inserted text is based on default HTML formatting. As a result, the text looks as it is rendered in browsers.

When useBuilderFormatting is true, formatting of inserted text is based on DocumentBuilder formatting, and the text looks as if it were inserted with Write.

Examples

Shows how to apply a document builder’s formatting while inserting HTML content.

Document doc = new Document();
DocumentBuilder builder = new DocumentBuilder(doc);

// Set a text alignment for the builder, insert an HTML paragraph with a specified alignment, and one without.
builder.ParagraphFormat.Alignment = ParagraphAlignment.Distributed;
builder.InsertHtml(
    "<p align='right'>Paragraph 1.</p>" +
    "<p>Paragraph 2.</p>", useBuilderFormatting);

ParagraphCollection paragraphs = doc.FirstSection.Body.Paragraphs;

// The first paragraph has an alignment specified. When InsertHtml parses the HTML code,
// the paragraph alignment value found in the HTML code always supersedes the document builder's value.
Assert.AreEqual("Paragraph 1.", paragraphs[0].GetText().Trim());
Assert.AreEqual(ParagraphAlignment.Right, paragraphs[0].ParagraphFormat.Alignment);

// The second paragraph has no alignment specified. It can have its alignment value filled in
// by the builder's value depending on the flag we passed to the InsertHtml method.
Assert.AreEqual("Paragraph 2.", paragraphs[1].GetText().Trim());
Assert.AreEqual(useBuilderFormatting ? ParagraphAlignment.Distributed : ParagraphAlignment.Left,
    paragraphs[1].ParagraphFormat.Alignment);

doc.Save(ArtifactsDir + "DocumentBuilder.InsertHtmlWithFormatting.docx");

See Also

InsertHtml(string, HtmlInsertOptions)

Inserts an HTML string into the document. Allows to specify additional options.

public void InsertHtml(string html, HtmlInsertOptions options)
ParameterTypeDescription
htmlStringAn HTML string to insert into the document.
optionsHtmlInsertOptionsOptions that are used when HTML string is inserted.

Remarks

You can use this method to insert an HTML fragment or whole HTML document.

Examples

Shows how to use options while inserting html.

Document doc = new Document();
DocumentBuilder builder = new DocumentBuilder(doc);

builder.InsertField(" MERGEFIELD Name ");
builder.InsertParagraph();
builder.InsertField(" MERGEFIELD EMAIL ");
builder.InsertParagraph();

// By default "DocumentBuilder.InsertHtml" inserts a HTML fragment that ends with a block-level HTML element,
// it normally closes that block-level element and inserts a paragraph break.
// As a result, a new empty paragraph appears after inserted document.
// If we specify "HtmlInsertOptions.RemoveLastEmptyParagraph", those extra empty paragraphs will be removed.
builder.MoveToMergeField("NAME");
builder.InsertHtml("<p>John Smith</p>", HtmlInsertOptions.UseBuilderFormatting | HtmlInsertOptions.RemoveLastEmptyParagraph);
builder.MoveToMergeField("EMAIL");
builder.InsertHtml("<p>jsmith@example.com</p>", HtmlInsertOptions.UseBuilderFormatting);

doc.Save(ArtifactsDir + "MailMerge.RemoveLastEmptyParagraph.docx");

See Also

DocumentBuilder.InsertHorizontalRule DocumentBuilder.InsertHyperlink