使用linq排序，想改进下，求指教
/// <summary>
/// 对数据源进行排序
/// </summary>
/// <param name="pStudentInfoList">需要排序的数据源</param>
/// <param name="pSortExpression">排序字段</param>
/// <param name="pSortDeriction">排序的方向</param>
/// <returns>StudentInfo类型的list</returns>
public static List<StudentInfo> GetListSorted(List<StudentInfo> pStudentInfoList, SortKeys pSortExpression, SortDeriction pSortDeriction)
{
List<StudentInfo> ds = new List<StudentInfo>();
if (pSortDeriction == SortDeriction.DESC)
{
switch (pSortExpression)
{
case SortKeys.StudentId:
ds = pStudentInfoList.OrderByDescending(studentinfo => studentinfo.StudentId).ToList<StudentInfo>();
break;
case SortKeys.StudentName:
ds = pStudentInfoList.OrderByDescending(studentinfo => studentinfo.StudentName).ToList();
break;
case SortKeys.Birthday:
ds = pStudentInfoList.OrderByDescending(studentinfo => studentinfo.Birthday).ToList();
break;
case SortKeys.Sex:
ds = pStudentInfoList.OrderByDescending(studentinfo => studentinfo.Sex).ToList();
break;
}
}
else if (pSortDeriction == SortDeriction.ASC)
{
switch (pSortExpression)
{
case SortKeys.StudentId:
ds = pStudentInfoList.OrderBy(studentinfo => studentinfo.StudentId).ToList<StudentInfo>();
break;
case SortKeys.StudentName:
ds = pStudentInfoList.OrderBy(studentinfo => studentinfo.StudentName).ToList();
break;
case SortKeys.Birthday:
ds = pStudentInfoList.OrderBy(studentinfo => studentinfo.Birthday).ToList();
break;
case SortKeys.Sex:
ds = pStudentInfoList.OrderBy(studentinfo => studentinfo.Sex).ToList();
break;
}
}
else
{
}
return ds;
}
这里的sortExpression是排序的字段，封装成了一个枚举
使用了额linq排序，但是还是使用了分支语句和判断语句
想让该方法更加通用，打算从 ds = pStudentInfoList.OrderByDescending(studentinfo => studentinfo.Sex).ToList();
里面的条件表达式入手，请问这样可行吗，如果可行，按个匿名函数该使用什么手段去传入参数，或者使用显式定义的函数可以吗？？
[解决办法]
public static List<StudentInfo> GetListSorted(List<StudentInfo> pStudentInfoList, Expression<Func<StudentInfo, ICompareable> orderfunc, SortDeriction pSortDeriction)
{
if (pSortDeriction == SortDeriction.DESC)
return pStudentInfoList.OrderByDescending(x => orderfunc(x)).ToList();
else
return pStudentInfoList.OrderBy(x => orderfunc(x)).ToList();
}
[解决办法]
反射或用dynmaic linq
参考：
http://blog.csdn.net/q107770540/article/details/6133484
Dynamic LINQ :http://weblogs.asp.net/scottgu/archive/2008/01/07/dynamic-linq-part-1-using-the-linq-dynamic-query-library.aspx
