我使用一些序列化的强类型表达式，以允许我的UI代码具有强类型的排序和搜索表达式。这些是类型，Expression<Func<TModel,TProperty>>并按以下方式使用：SortOption.Field = (p => p.FirstName);。对于这个简单的案例，我已经做到了这一点。

实际上，我用于解析“
FirstName”属性的代码实际上正在重用我们使用的第三方产品中的某些现有功能，并且效果很好，直到我们开始使用深度嵌套的properties（SortOption.Field = (p => p.Address.State.Abbreviation);）。对于支持深度嵌套的属性，此代码有一些非常不同的假设。

至于这段代码的作用，我并不太了解，而不是更改该代码，我认为我应该从头开始编写此功能。但是，我不知道这样做的 好
方法。我怀疑我们可以做一些比做ToString（）和执行字符串解析更好的事情。那么，什么是处理琐碎而又深层嵌套的案件的好方法呢？

要求：

• 给定表达式，p => p.FirstName我需要一个字符串"FirstName"。
• 给定表达式，p => p.Address.State.Abbreviation我需要一个字符串"Address.State.Abbreviation"

尽管对我的问题的回答并不重要，但我怀疑我的序列化/反序列化代码可能对将来发现此问题的其他人有用，因此如下。同样，此代码对这个问题并不重要-
我只是认为它可能对某人有帮助。请注意，这DynamicExpression.ParseLambda是来自Dynamic
LINQ的东西，Property.PropertyToString()它是关于这个问题的。

/// <summary>
/// This defines a framework to pass, across serialized tiers, sorting logic to be performed.
/// </summary>
/// <typeparam name="TModel">This is the object type that you are filtering.</typeparam>
/// <typeparam name="TProperty">This is the property on the object that you are filtering.</typeparam>
[Serializable]
public class SortOption<TModel, TProperty> : ISerializable where TModel : class
{
    /// <summary>
    /// Convenience constructor.
    /// </summary>
    /// <param name="property">The property to sort.</param>
    /// <param name="isAscending">Indicates if the sorting should be ascending or descending</param>
    /// <param name="priority">Indicates the sorting priority where 0 is a higher priority than 10.</param>
    public SortOption(Expression<Func<TModel, TProperty>> property, bool isAscending = true, int priority = 0)
    {
        Property = property;
        IsAscending = isAscending;
        Priority = priority;
    }

    /// <summary>
    /// Default Constructor.
    /// </summary>
    public SortOption()
        : this(null)
    {
    }

    /// <summary>
    /// This is the field on the object to filter.
    /// </summary>
    public Expression<Func<TModel, TProperty>> Property { get; set; }

    /// <summary>
    /// This indicates if the sorting should be ascending or descending.
    /// </summary>
    public bool IsAscending { get; set; }

    /// <summary>
    /// This indicates the sorting priority where 0 is a higher priority than 10.
    /// </summary>
    public int Priority { get; set; }

    #region Implementation of ISerializable

    /// <summary>
    /// This is the constructor called when deserializing a SortOption.
    /// </summary>
    protected SortOption(SerializationInfo info, StreamingContext context)
    {
        IsAscending = info.GetBoolean("IsAscending");
        Priority = info.GetInt32("Priority");

        // We just persisted this by the PropertyName. So let's rebuild the Lambda Expression from that.
        Property = DynamicExpression.ParseLambda<TModel, TProperty>(info.GetString("Property"), default(TModel), default(TProperty));
    }

    /// <summary>
    /// Populates a <see cref="T:System.Runtime.Serialization.SerializationInfo"/> with the data needed to serialize the target object.
    /// </summary>
    /// <param name="info">The <see cref="T:System.Runtime.Serialization.SerializationInfo"/> to populate with data. </param>
    /// <param name="context">The destination (see <see cref="T:System.Runtime.Serialization.StreamingContext"/>) for this serialization. </param>
    public void GetObjectData(SerializationInfo info, StreamingContext context)
    {
        // Just stick the property name in there. We'll rebuild the expression based on that on the other end.
        info.AddValue("Property", Property.PropertyToString());
        info.AddValue("IsAscending", IsAscending);
        info.AddValue("Priority", Priority);
    }

    #endregion
}