上下文为有兴趣的人…

/// <summary>Provides base functionality for hand-coded abstractions of API method wrappers,mostly those that abstract over
/// parameters that are required to be JSON-encoded.</summary>
public class FacebookArgs : Dictionary<String,Object>
{
    /// <summary>Initializes an instance of <see cref="FacebookArgs" />.</summary>
    public FacebookArgs() { }

    /// <summary>Intializes an instance of <see cref="FacebookArgs" />,that contains elements copied from <paramref name="dictionary "/>.</summary>
    /// <param name="dictionary"></param>
    public FacebookArgs(IDictionary<String,Object> dictionary)
        : base(dictionary) { }

    /// <summary>Gets or sets the value associated with the specified key.</summary>
    /// <param name="key">The key of the value to get or set.</param>
    /// <returns>The value associated with the specified key.</returns>
    /// <remarks>This implementation hides the base indexer implementation such that specifying a key that does not exist returns null rather than throwing a <see cref="KeyNotFoundException" />.</remarks>
    public new Object this[String key]
    {
        get
        {
            Object value;
            if (this.TryGetValue(key,out value)) return value;
            else return null;
        }
        set { base[key] = value; }
    }

    /// <summary>In derived classes,provides specialized serialization logic for specific properties contained in this object.</summary>
    /// <param name="key">The key of the property to serialize.</param>
    /// <param name="args">A reference to a dictionary of arguments that will be passed directly to a <see cref="FacebookRequest" /> object.</param>
    /// <remarks>
    /// <para>This method allows specialized serialization logic,such as JSON encoding,to be applied to specific properties.</para>
    /// <para>To implement,use a <c>switch</c> (<c>Select</c> in VB.NET) statement to filter based on <paramref name="key" /> and provide the property-specific logic.
    /// The resulting value should then be added to <paramref name="args" /> using the same <paramref name="key "/>.
    /// </para>
    /// <para>Properties that do not require additional processing (strings,integral values,etc) should be ignored.</para>
    /// </remarks>
    protected virtual void SerializeProperty(String key,ref IDictionary<String,Object> args) { }

    /// <summary>Returns a dictionary of key/value pairs suitable to be passed a <see cref="FacebookRequest" /> object.</summary>
    /// <returns>A dictionary of key/value pairs suitable to be passed a <see cref="FacebookRequest" /> object.</returns>
    /// <remarks>This method calls the <see cref="SerializeProperty" /> for each key in the object,which allows property-specific processing
    /// to be done on any property.</remarks>
    /// <seealso cref="SerializeProperty" />
    public IDictionary<String,Object> GetArgs()
    {
        IDictionary<String,Object> args = new Dictionary<String,Object>();

        foreach (String key in this.Keys)
        {
            this.SerializeProperty(key,ref args);

            if (!args.ContainsKey(key) && this[key] != null)
            {
                args.Add(key,this[key]);
            }
        }

        return args;
    }
}

有问题的标签可以在< remarks> SerializeProperty的标签。我错过了冗长的文档。我也计划提供一些<示例>，我只是还没有得到它。