Introduction

Create a Hello World OneNote document Using API

This article explains how to create a OneNote document from scratch using the simple APIs provided by Aspose.Note for .NET. To create a OneNote document, add page, outline, outline element and text dynamically using the set of classes packaged in the Aspose.Note namespace.

Please follow these steps to create a OneNote document using the Aspose.Note APIs:

1. Create an instance of the Document class that represents a OneNote document.
2. If you have purchased a license, then embed the code to apply for that license with the help of the License class.
3. Initialize one object of Page, Outline, OutlineElement and RichText classes bypassing the Document class object. Calling the AppendChild method of the OutlineElement, Outline, Page and Document classes adds an appropriate new node that can be further used to add new nodes to the OneNote document.
4. The ParagraphStyle class defines the text formatting. Similarly, the ParagraphStyle property exposed by RichText class allows applying to format on the text. Text style settings to be used if there is no matching TextStyle object in Styles collection either this object doesn’t specify a needed setting.
5. Generate the OneNote document by calling the Save method of the Document object.

Create a OneNote Document with Simple RichText

// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_LoadingAndSaving();

// Create an object of the Document class
Document doc = new Document();
// Initialize Page class object
Page page = new Page(doc);
// Initialize Outline class object
Outline outline = new Outline(doc);
// Initialize OutlineElement class object
OutlineElement outlineElem = new OutlineElement(doc);

// Initialize TextStyle class object and set formatting properties
ParagraphStyle textStyle = new ParagraphStyle { FontColor = Color.Black, FontName = "Arial", FontSize = 10 };
// Initialize RichText class object and apply text style
RichText text = new RichText(doc) { Text = "Hello OneNote text!", ParagraphStyle = textStyle };

// Add RichText node
outlineElem.AppendChildLast(text);
// Add OutlineElement node
outline.AppendChildLast(outlineElem);
// Add Outline node
page.AppendChildLast(outline);
// Add Page node
doc.AppendChildLast(page);

dataDir = dataDir + "CreateDocWithSimpleRichText_out.one";
// Save OneNote document
doc.Save(dataDir);

Create a OneNote Document with Formatted RichText

// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_LoadingAndSaving();

// Create an object of the Document class
Document doc = new Document();
// Initialize Page class object
Aspose.Note.Page page = new Aspose.Note.Page(doc);
// Initialize Title class object
Title title = new Title(doc);
// Initialize TextStyle class object and set formatting properties
ParagraphStyle defaultTextStyle = new ParagraphStyle
{
    FontColor = Color.Black,
    FontName = "Arial",
    FontSize = 10
};

RichText titleText = new RichText(doc)
{
    Text = "Title!",
    ParagraphStyle = defaultTextStyle
};
Outline outline = new Outline(doc)
{
    VerticalOffset = 100,
    HorizontalOffset = 100
};
OutlineElement outlineElem = new OutlineElement(doc);
// RunIndex = 5 means the style will be applied only to 0-4 characters. ("Hello")
TextStyle textStyleForHelloWord = new TextStyle
{
    FontColor = Color.Red,
    FontName = "Arial",
    FontSize = 10,
    RunIndex = 5,
};
// RunIndex = 13 means the style will be applied only to 5-12 characters. (" OneNote")
TextStyle textStyleForOneNoteWord = new TextStyle
{
    FontColor = Color.Green,
    FontName = "Calibri",
    FontSize = 10,
    IsItalic = true,
    RunIndex = 13,
};
// RunIndex = 18 means the style will be applied only to 13-17 characters. (" text").
// Other characters ("!") will have the default style.
TextStyle textStyleForTextWord = new TextStyle
{
    FontColor = Color.Blue,
    FontName = "Arial",
    FontSize = 15,
    IsBold = true,
    IsItalic = true,
    RunIndex = 18,
};
RichText text = new RichText(doc)
{
    Text = "Hello OneNote text!",
    ParagraphStyle = defaultTextStyle,
    Styles = { textStyleForHelloWord, textStyleForOneNoteWord, textStyleForTextWord }
};

title.TitleText = titleText;
// Set page title
page.Title = title;
// Add RichText node
outlineElem.AppendChildLast(text);
// Add OutlineElement node
outline.AppendChildLast(outlineElem);
// Add Outline node
page.AppendChildLast(outline);
// Add Page node
doc.AppendChildLast(page);

dataDir = dataDir + "CreateDocWithFormattedRichText_out.one";
// Save OneNote document
doc.Save(dataDir);