C#

/// <summary>
/// Returns a value indicating if the path contains the specified node type.
/// </summary>
/// <param name="nodeType">Specifies the node type.</param>
/// <returns></returns>
public bool Contains(BindingPathNodeType nodeType)
{
    return IndexOf(nodeType) != -1;
}

/// <summary>
/// Attempts to locate the first (zero-based) index position of the specified node type.
/// </summary>
/// <param name="nodeType">Specifies the node type.</param>
/// <returns></returns>
public int IndexOf(BindingPathNodeType nodeType)
{
    int intCount = parsedPathNodes.Length;
    for (int i = 0; i < intCount; i++)
        if (parsedPathNodes[i].NodeType == nodeType)
            return i;
    return -1;
}