public void CreateAccessFuncExpression()
{
var obj = new Student()
{
Name = "HaHa"
};
var expFunc = AccessExpressionFactory.CreateAccessExpressionFunc <Student>("Name");
Assert.Equal(expFunc.Compile().Invoke(obj), obj.Name);
}
public void CreateAccessFunc()
{
var obj = new Student()
{
Name = "HaHa"
};
var func = AccessExpressionFactory.CreateAccessFunc <Student>("Name");
Assert.Equal(func(obj), obj.Name);
}
/// <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(AccessExpressionFactory.CreateAccessFunc <TSource, TKey>(key)));
}
