Iterate through container items

GroupDocs.Parser provides the functionality to extract items from containers by the GetContainer method:

IEnumerable<ContainerItem> GetContainer();

This method returns a collection of ContainerItem objects:

Here are the steps to extract container from the document:

• Instantiate Parser object for the initial document;
• Call GetContainer method and obtain collection of ContainerItem objects;
• Check if collection isn’t null (container extraction is supported for the document);
• Iterate through the collection and get container item names, sizes and obtain content.

The following example shows how to extract attachments from a container:

// Create an instance of Parser class
using(Parser parser = new Parser(filePath))
{
    // Extract attachments from the container
    IEnumerable<ContainerItem> attachments = parser.GetContainer();
    // Check if container extraction is supported
    if(attachments == null)
    {
        Console.WriteLine("Container extraction isn't supported");
    }

    // Iterate over attachments
    foreach(ContainerItem item in attachments)
    {
        // Print an item name and size
        Console.WriteLine(string.Format("{0}: {1}", item.Name, item.Size));
    }
}

Container represents both container-only files (like zip archives, outlook storage) and documents with attachments (like emails, PDF Portfolios).

In case of outlook storage (ost/pst files) container consists of email documents (msg files)

More resources

GitHub examples

You may easily run the code above and see the feature in action in our GitHub examples:

• GroupDocs.Parser for .NET examples
• GroupDocs.Parser for Java examples

Free online document parser App

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