FieldCompare

FieldCompare class

Implements the COMPARE field.

public class FieldCompare : Field

Constructors

Name Description
FieldCompare() The default constructor.

Properties

Name Description
ComparisonOperator { get; set; } Gets or sets the comparison operator.
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).
LeftExpression { get; set; } Gets or sets the left part of the comparison expression.
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.
RightExpression { get; set; } Gets or sets the right part of the comparison expression.
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).
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

Compares the values designated by the expressions LeftExpression and RightExpression in comparison using the operator designated by ComparisonOperator.

Examples

Shows how to compare expressions using a COMPARE field.

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

FieldCompare field = (FieldCompare)builder.InsertField(FieldType.FieldCompare, true);
field.LeftExpression = "3";
field.ComparisonOperator = "<";
field.RightExpression = "2";
field.Update();

// The COMPARE field displays a "0" or a "1", depending on its statement's truth.
// The result of this statement is false so that this field will display a "0".
Assert.AreEqual(" COMPARE  3 < 2", field.GetFieldCode());
Assert.AreEqual("0", field.Result);

builder.Writeln();

field = (FieldCompare)builder.InsertField(FieldType.FieldCompare, true);
field.LeftExpression = "5";
field.ComparisonOperator = "=";
field.RightExpression = "2 + 3";
field.Update();

// This field displays a "1" since the statement is true.
Assert.AreEqual(" COMPARE  5 = \"2 + 3\"", field.GetFieldCode());
Assert.AreEqual("1", field.Result);

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

See Also