FieldNumPages

FieldNumPages class

Implements the NUMPAGES field.

To learn more, visit the Working with Fields documentation article.

public class FieldNumPages : Field

Constructors

Name	Description
FieldNumPages()	The default constructor.

Properties

Name	Description
DisplayResult { get; }	Gets the text that represents the displayed field result.
End { get; }	Gets the node that represents the field end.
Format { get; }	Gets a `FieldFormat` object that provides typed access to field’s formatting.
IsDirty { get; set; }	Gets or sets whether the current result of the field is no longer correct (stale) due to other modifications made to the document.
IsLocked { get; set; }	Gets or sets whether the field is locked (should not recalculate its result).
LocaleId { get; set; }	Gets or sets the LCID of the field.
Result { get; set; }	Gets or sets text that is between the field separator and field end.
Separator { get; }	Gets the node that represents the field separator. Can be `null`.
Start { get; }	Gets the node that represents the start of the field.
virtual Type { get; }	Gets the Microsoft Word field type.

Methods

Name	Description
GetFieldCode()	Returns text between field start and field separator (or field end if there is no separator). Both field code and field result of child fields are included.
GetFieldCode(bool)	Returns text between field start and field separator (or field end if there is no separator).
virtual Remove()	Removes the field from the document. Returns a node right after the field. If the field’s end is the last child of its parent node, returns its parent paragraph. If the field is already removed, returns `null`.
Unlink()	Performs the field unlink.
Update()	Performs the field update. Throws if the field is being updated already.
Update(bool)	Performs a field update. Throws if the field is being updated already.

Remarks

Retrieves the number of pages in the current document, as recorded in the Pages property of the built-in document properties.

Examples

Shows how to use NUMCHARS, NUMWORDS, NUMPAGES and PAGE fields to track the size of our documents.

Document doc = new Document(MyDir + "Paragraphs.docx");
DocumentBuilder builder = new DocumentBuilder(doc);

builder.MoveToHeaderFooter(HeaderFooterType.FooterPrimary);
builder.ParagraphFormat.Alignment = ParagraphAlignment.Center;

// Below are three types of fields that we can use to track the size of our documents.
// 1 -  Track the character count with a NUMCHARS field:
FieldNumChars fieldNumChars = (FieldNumChars)builder.InsertField(FieldType.FieldNumChars, true);       
builder.Writeln(" characters");

// 2 -  Track the word count with a NUMWORDS field:
FieldNumWords fieldNumWords = (FieldNumWords)builder.InsertField(FieldType.FieldNumWords, true);
builder.Writeln(" words");

// 3 -  Use both PAGE and NUMPAGES fields to display what page the field is on,
// and the total number of pages in the document:
builder.ParagraphFormat.Alignment = ParagraphAlignment.Right;
builder.Write("Page ");
FieldPage fieldPage = (FieldPage)builder.InsertField(FieldType.FieldPage, true);
builder.Write(" of ");
FieldNumPages fieldNumPages = (FieldNumPages)builder.InsertField(FieldType.FieldNumPages, true);

Assert.That(fieldNumChars.GetFieldCode(), Is.EqualTo(" NUMCHARS "));
Assert.That(fieldNumWords.GetFieldCode(), Is.EqualTo(" NUMWORDS "));
Assert.That(fieldNumPages.GetFieldCode(), Is.EqualTo(" NUMPAGES "));
Assert.That(fieldPage.GetFieldCode(), Is.EqualTo(" PAGE "));

// These fields will not maintain accurate values in real time
// while we edit the document programmatically using Aspose.Words, or in Microsoft Word.
// We need to update them every we need to see an up-to-date value. 
doc.UpdateFields();
doc.Save(ArtifactsDir + "Field.NUMCHARS.NUMWORDS.NUMPAGES.PAGE.docx");