C# List 过滤，排序，删除

taskList_IsManager.Where(p => p.IsManager == "1").ToList();

taskList = taskList.OrderBy(p => p.IsManager).ToList();

//删除taskList为1的用户
for (int i = 0; i < taskList.Count; i++)
{
if (taskList[i].IsManager == "1")
taskList.Remove(taskList[i]);
}