需求說明：我想要搜尋相關專長的人物資訊Ａ集合的資料排在列表上的最上方，再搜尋其它人物資訊Ｂ集合的資料清單，插入在Ａ集合清單的下方。
問題：Ａ集合裡可能會有重複的人物（因為一個人有多個專長，keyword為專長關鍵字），Ｂ集合裡會有Ａ集合裡重複的人物資訊
所以想要在撈出的集合清單裡移除重複的資訊，google參考以下連結資訊做法
https://www.cnblogs.com/chenwolong/p/list.html
先測試使用了比較簡單的方法一，和網頁最下方的方法套用，都沒有如預期的排除重複資料

程式碼如下，使用了兩組SQL撈取不同條件下的人物資訊，再將資訊全部放入至EMV清單裡，最後再排除重複資訊，這樣應該就能達到我想要的清單資訊排序功能。

List<EditorMemberViewModel> EMV = new List<EditorMemberViewModel>();
string getkeyword = GetPaperKeywords(PaperId);
if (getkeyword != "" && getkeyword != null)
{
    string[] keywords = getkeyword.Split(';');
    foreach (var item in keywords)
    {
        string sql2 = @"SELECT *
            FROM MemberRole AS mr 
            LEFT JOIN Members AS m on mr.MemberId = m.MemberId
            LEFT JOIN MemberProfessionalField AS mp on mp.MemberId = m.MemberId
            WHERE mr.Role = @Role AND mp.ProfessionalField LIKE '%" + item  + @"% '
            AND m.MemberId NOT IN(
                SELECT ReviewerId 
                FROM ReviewAssignments AS ra
                WHERE ra.PaperId = @PaperId
            )";
        var v2 = db.Database.SqlQuery<EditorMemberViewModel>(sql2,
            new SqlParameter("PaperId", PaperId),
            new SqlParameter("ProfessionalField", item),
            new SqlParameter("Role", Role)).ToList();

        v2.ForEach(o => EMV.Add(new EditorMemberViewModel
        {
            PaperId = PaperId,
            Name = o.Name,
            Account = o.Account,
            RoleName = GetRole(o.Role),
            MemberId = o.MemberId,
            MemberTitle = o.MemberTitle,
            School = o.School,
            Department = o.Department,
            ProfessionalFieldName = o.ProfessionalFieldName,
            AssignedNum = GetReviewerAssignedNums(o.MemberId, ConferenceId)
        }));
    }
}//end if (getkeyword != "" && getkeyword != null)

string sql3 = @"SELECT * 
          FROM MemberRole AS mr 
          JOIN Members AS m ON mr.MemberId = m.MemberId
          WHERE mr.Role = @Role 
          AND m.MemberId NOT IN(
              SELECT ReviewerId 
              FROM ReviewAssignments AS ra
              WHERE ra.PaperId = @PaperId
          )";
var v3 = db.Database.SqlQuery<EditorMemberViewModel>(sql3,
    new SqlParameter("PaperId", PaperId),
    new SqlParameter("Role", Role)).ToList();
v3.ForEach(o => EMV.Add(new EditorMemberViewModel
{
    PaperId = PaperId,
    Name = o.Name,
    Account = o.Account,
    RoleName = GetRole(o.Role),
    MemberId = o.MemberId,
    MemberTitle = o.MemberTitle,
    School = o.School,
    Department = o.Department,
    ProfessionalFieldName = o.ProfessionalFieldName,
    AssignedNum = GetReviewerAssignedNums(o.MemberId, ConferenceId)
}));

var distinctItems = EMV.Distinct().ToList();

HashSet<EditorMemberViewModel> hs = new HashSet<EditorMemberViewModel>(EMV);
var ReviewerList = hs.ToList();

//** 注意搜尋條件必需排序，否則會報錯
return ReviewerList.ToPagedList(pageNumber, pageSize);

想請問這些移除重複的方法是否有使用上錯誤或誤解的地方呢？
先謝謝前輩指教了～