BuildingBlockCollection Class

A collection of BuildingBlock objects in the document.

ExpandedInheritance Hierarchy


Namespace:  Aspose.Words.BuildingBlocks
Assembly:  Aspose.Words (in Aspose.Words.dll) Version: 21.9.0


public class BuildingBlockCollection : NodeCollection

The BuildingBlockCollection type exposes the following members.


Public propertyCode exampleCount
Gets the number of nodes in the collection.
(Inherited from NodeCollection.)
Public propertyCode exampleItem
Retrieves a building block at the given index.


Public methodCode exampleAdd
Adds a node to the end of the collection.
(Inherited from NodeCollection.)
Public methodCode exampleClear
Removes all nodes from this collection and from the document.
(Inherited from NodeCollection.)
Public methodCode exampleContains
Determines whether a node is in the collection.
(Inherited from NodeCollection.)
Public methodEquals
Determines whether the specified object is equal to the current object.
(Inherited from Object.)
Public methodGetEnumerator
Provides a simple "foreach" style iteration over the collection of nodes.
(Inherited from NodeCollection.)
Public methodGetHashCode
Serves as the default hash function.
(Inherited from Object.)
Public methodGetType
Gets the Type of the current instance.
(Inherited from Object.)
Public methodCode exampleIndexOf
Returns the zero-based index of the specified node.
(Inherited from NodeCollection.)
Public methodCode exampleInsert
Inserts a node into the collection at the specified index.
(Inherited from NodeCollection.)
Public methodCode exampleRemove
Removes the node from the collection and from the document.
(Inherited from NodeCollection.)
Public methodCode exampleRemoveAt
Removes the node at the specified index from the collection and from the document.
(Inherited from NodeCollection.)
Public methodCode exampleToArray
Copies all building blocks from the collection to a new array of building blocks.
Public methodToString
Returns a string that represents the current object.
(Inherited from Object.)


You do not create instances of this class directly. To access a collection of building blocks use the BuildingBlocks property.


Shows ways of accessing building blocks in a glossary document.
public void GlossaryDocument()
    Document doc = new Document();
    GlossaryDocument glossaryDoc = new GlossaryDocument();

    glossaryDoc.AppendChild(new BuildingBlock(glossaryDoc) { Name = "Block 1" });
    glossaryDoc.AppendChild(new BuildingBlock(glossaryDoc) { Name = "Block 2" });
    glossaryDoc.AppendChild(new BuildingBlock(glossaryDoc) { Name = "Block 3" });
    glossaryDoc.AppendChild(new BuildingBlock(glossaryDoc) { Name = "Block 4" });
    glossaryDoc.AppendChild(new BuildingBlock(glossaryDoc) { Name = "Block 5" });

    Assert.AreEqual(5, glossaryDoc.BuildingBlocks.Count);

    doc.GlossaryDocument = glossaryDoc;

    // There are various ways of accessing building blocks.
    // 1 -  Get the first/last building blocks in the collection:
    Assert.AreEqual("Block 1", glossaryDoc.FirstBuildingBlock.Name);
    Assert.AreEqual("Block 5", glossaryDoc.LastBuildingBlock.Name);

    // 2 -  Get a building block by index:
    Assert.AreEqual("Block 2", glossaryDoc.BuildingBlocks[1].Name);
    Assert.AreEqual("Block 3", glossaryDoc.BuildingBlocks.ToArray()[2].Name);

    // 3 -  Get the first building block that matches a gallery, name and category:
    Assert.AreEqual("Block 4", 
        glossaryDoc.GetBuildingBlock(BuildingBlockGallery.All, "(Empty Category)", "Block 4").Name);

    // We will do that using a custom visitor,
    // which will give every BuildingBlock in the GlossaryDocument a unique GUID
    GlossaryDocVisitor visitor = new GlossaryDocVisitor();


    // In Microsoft Word, we can access the building blocks via "Insert" -> "Quick Parts" -> "Building Blocks Organizer".
    doc.Save(ArtifactsDir + "BuildingBlocks.GlossaryDocument.dotx"); 

/// <summary>
/// Gives each building block in a visited glossary document a unique GUID.
/// Stores the GUID-building block pairs in a dictionary.
/// </summary>
public class GlossaryDocVisitor : DocumentVisitor
    public GlossaryDocVisitor()
        mBlocksByGuid = new Dictionary<Guid, BuildingBlock>();
        mBuilder = new StringBuilder();

    public string GetText()
        return mBuilder.ToString();

    public Dictionary<Guid, BuildingBlock> GetDictionary()
        return mBlocksByGuid;

    public override VisitorAction VisitGlossaryDocumentStart(GlossaryDocument glossary)
        mBuilder.AppendLine("Glossary document found!");
        return VisitorAction.Continue;

    public override VisitorAction VisitGlossaryDocumentEnd(GlossaryDocument glossary)
        mBuilder.AppendLine("Reached end of glossary!");
        mBuilder.AppendLine("BuildingBlocks found: " + mBlocksByGuid.Count);
        return VisitorAction.Continue;

    public override VisitorAction VisitBuildingBlockStart(BuildingBlock block)
        block.Guid = Guid.NewGuid();
        mBlocksByGuid.Add(block.Guid, block);
        return VisitorAction.Continue;

    public override VisitorAction VisitBuildingBlockEnd(BuildingBlock block)
        mBuilder.AppendLine("\tVisited block \"" + block.Name + "\"");
        mBuilder.AppendLine("\t Type: " + block.Type);
        mBuilder.AppendLine("\t Gallery: " + block.Gallery);
        mBuilder.AppendLine("\t Behavior: " + block.Behavior);
        mBuilder.AppendLine("\t Description: " + block.Description);

        return VisitorAction.Continue;

    private readonly Dictionary<Guid, BuildingBlock> mBlocksByGuid;
    private readonly StringBuilder mBuilder;

ExpandedSee Also