## FieldRD class

Implements the RD field.

To learn more, visit the [Working with Fields](https://docs.aspose.com/words/net/working-with-fields/) documentation article.

```csharp
public class FieldRD : Field
```

## Constructors

| Name | Description |
| --- | --- |
| [FieldRD](fieldrd/)() | The default constructor. |

## Properties

| Name | Description |
| --- | --- |
| [DisplayResult](../../aspose.words.fields/field/displayresult/) { get; } | Gets the text that represents the displayed field result. |
| [End](../../aspose.words.fields/field/end/) { get; } | Gets the node that represents the field end. |
| [FileName](../../aspose.words.fields/fieldrd/filename/) { get; set; } | Gets or sets the name of the file to include when generating a table of contents, table of authorities, or index. |
| [Format](../../aspose.words.fields/field/format/) { get; } | Gets a [`FieldFormat`](../fieldformat/) object that provides typed access to field's formatting. |
| [IsDirty](../../aspose.words.fields/field/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](../../aspose.words.fields/field/islocked/) { get; set; } | Gets or sets whether the field is locked (should not recalculate its result). |
| [IsPathRelative](../../aspose.words.fields/fieldrd/ispathrelative/) { get; set; } | Gets or sets whether the path is relative to the current document. |
| [LocaleId](../../aspose.words.fields/field/localeid/) { get; set; } | Gets or sets the LCID of the field. |
| [Result](../../aspose.words.fields/field/result/) { get; set; } | Gets or sets text that is between the field separator and field end. |
| [Separator](../../aspose.words.fields/field/separator/) { get; } | Gets the node that represents the field separator. Can be `null`. |
| [Start](../../aspose.words.fields/field/start/) { get; } | Gets the node that represents the start of the field. |
| virtual [Type](../../aspose.words.fields/field/type/) { get; } | Gets the Microsoft Word field type. |

## Methods

| Name | Description |
| --- | --- |
| [GetFieldCode](../../aspose.words.fields/field/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](../../aspose.words.fields/field/getfieldcode/)(*bool*) | Returns text between field start and field separator (or field end if there is no separator). |
| virtual [Remove](../../aspose.words.fields/field/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](../../aspose.words.fields/field/unlink/)() | Performs the field unlink. |
| [Update](../../aspose.words.fields/field/update/)() | Performs the field update. Throws if the field is being updated already. |
| [Update](../../aspose.words.fields/field/update/)(*bool*) | Performs a field update. Throws if the field is being updated already. |

## Remarks

Identifies a file to include when you create a table of contents, a table of authorities, or an index with the TOC, TOA, or INDEX field

## Examples

Shows to use the RD field to create a table of contents entries from headings in other documents.

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

// Use a document builder to insert a table of contents,
// and then add one entry for the table of contents on the following page.
builder.InsertField(FieldType.FieldTOC, true);
builder.InsertBreak(BreakType.PageBreak);
builder.CurrentParagraph.ParagraphFormat.StyleName = "Heading 1";
builder.Writeln("TOC entry from within this document");

// Insert an RD field, which references another local file system document in its FileName property.
// The TOC will also now accept all headings from the referenced document as entries for its table.
FieldRD field = (FieldRD)builder.InsertField(FieldType.FieldRefDoc, true);
field.FileName = ArtifactsDir + "ReferencedDocument.docx";

Assert.That(field.GetFieldCode(), Is.EqualTo($" RD  {ArtifactsDir.Replace(@"\",@"\\")}ReferencedDocument.docx"));

// Create the document that the RD field is referencing and insert a heading. 
// This heading will show up as an entry in the TOC field in our first document.
Document referencedDoc = new Document();
DocumentBuilder refDocBuilder = new DocumentBuilder(referencedDoc);
refDocBuilder.CurrentParagraph.ParagraphFormat.StyleName = "Heading 1";
refDocBuilder.Writeln("TOC entry from referenced document");
referencedDoc.Save(ArtifactsDir + "ReferencedDocument.docx");

doc.UpdateFields();
doc.Save(ArtifactsDir + "Field.RD.docx");
```

### See Also

* class [Field](../field/)
* namespace [Aspose.Words.Fields](../../aspose.words.fields/)
* assembly [Aspose.Words](../../)