C# Modify Word Paragraph Indent

Modify-Word-Paragraph-Indent.cs

// Prerequisite: Install <a href="https://www.nuget.org/packages/FileFormat.Words">FileFormat.Words</a>.

// Load the Word Document
var doc = new FileFormat.Words.Document($"filename.docx");

// Initialize the body with the document
var body = new FileFormat.Words.Body(doc);

foreach (FileFormat.Words.IElements.Paragraph paragraph in body.Paragraphs)
{
    switch (paragraph.Indentation)
    {
        case var indent when indent.Left > 0:
            paragraph.AddRun(new FileFormat.Words.IElements.Run
            { Text = " (left indent set to 0)", Italic = true });
            paragraph.Indentation.Left = 0;
            break;
        case var indent when indent.Right > 0:
            paragraph.AddRun(new FileFormat.Words.IElements.Run
            { Text = " (right indent set to 0)", Italic = true });
            paragraph.Indentation.Right = 0;
            break;
        case var indent when indent.FirstLine > 0:
            paragraph.AddRun(new FileFormat.Words.IElements.Run
            { Text = " (FirstLine indent set to 0)", Italic = true });
            paragraph.Indentation.FirstLine = 0;
            break;
        case var indent when indent.Hanging > 0:
            paragraph.AddRun(new FileFormat.Words.IElements.Run
            { Text = " (hanging indent set to 0)", Italic = true });
            paragraph.Indentation.Hanging = 0;
            break;
        default:
            paragraph.AddRun(new FileFormat.Words.IElements.Run
            { Text = " (No indent and no change)", Italic = true });
            break;
    }
    doc.Update(paragraph);
}

// Save the modified Word Document
doc.Save($"IndentModified.docx");