Contains

NodeCollection.Contains method

Determines whether a node is in the collection.

public bool Contains(Node node)
ParameterTypeDescription
nodeNodeThe node to locate.

Return Value

true if item is found in the collection; otherwise, false.

Remarks

This method performs a linear search; therefore, the average execution time is proportional to Count.

Examples

Shows how to work with a NodeCollection.

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

// Add text to the document by inserting Runs using a DocumentBuilder.
builder.Write("Run 1. ");
builder.Write("Run 2. ");

// Every invocation of the "Write" method creates a new Run,
// which then appears in the parent Paragraph's RunCollection.
RunCollection runs = doc.FirstSection.Body.FirstParagraph.Runs;

Assert.That(runs.Count, Is.EqualTo(2));

// We can also insert a node into the RunCollection manually.
Run newRun = new Run(doc, "Run 3. ");
runs.Insert(3, newRun);

Assert.That(runs.Contains(newRun), Is.True);
Assert.That(doc.GetText().Trim(), Is.EqualTo("Run 1. Run 2. Run 3."));

// Access individual runs and remove them to remove their text from the document.
Run run = runs[1];
runs.Remove(run);

Assert.That(doc.GetText().Trim(), Is.EqualTo("Run 1. Run 3."));
Assert.That(run, Is.Not.Null);
Assert.That(runs.Contains(run), Is.False);

See Also

NodeCollection.Clear NodeCollection.GetEnumerator