public void CreateAccessFunc()
{
var func = AccessExpressionUtility.CreateAccessFunc <TestClass>("Value2");
var func2 = AccessExpressionUtility.CreateAccessFunc <TestClass>("Value3");
var instance = new TestClass();
Assert.Equal(instance.Value2, func.Compile()(instance));
Assert.Equal(instance.Value3, func2.Compile()(instance));
}
/// <summary>
/// 使用指定屬性進行Group操作
/// </summary>
/// <typeparam name="TSource">元素類別</typeparam>
/// <typeparam name="TKey">主鍵類別</typeparam>
/// <param name="source">目前實例</param>
/// <param name="key">主鍵屬性名稱</param>
/// <returns>使用指定key進行Group結果</returns>
public static IEnumerable <IGrouping <TKey, TSource> > GroupBy <TSource, TKey>(this IEnumerable <TSource> source, string key)
{
return(source.GroupBy(AccessExpressionUtility.CreateAccessFunc <TSource, TKey>(key)));
}