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.AreEqual(2, runs.Count);

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

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

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

Assert.AreEqual("Run 1. Run 3.", doc.GetText().Trim());
Assert.NotNull(run);
Assert.False(runs.Contains(run));

See Also

NodeCollection.Clear NodeCollection.GetEnumerator