C# 使用LinQ to SQL返回表

我有一个名为UniversalClientSearch的搜索方法，它位于datahandler类中。该方法根据列以及在该列中搜索的内容搜索表中的数据，然后该方法必须返回一个表变量，以便在我的一个窗体上的datagridview中使用

我创建了一个LinQ to SQL语句来获取所需的数据行，并保存在var ReturnSearchQuery中，但我不知道如何将该查询转换为Table变量，tablename为tbclient

        //Fields
        private DataAccessDataContext db;

        //Constructor
        public Datahandler()
        {
            this.db = new DataAccessDataContext();
        }

        //Method
        public Table<tbClient> UniversalClientSearch(string SearchType, string SearchParameter)
        {
            //This is just here to initialize the variable so it can be changed in the switch
            var ReturnSearchQuery = from Clients in db.tbClients
                                    select Clients;

            //Filters Query based on what column to search
            switch (SearchType)
            {
                case "Client_ID":
                    ReturnSearchQuery = from Clients in db.tbClients
                        where Clients.Client_ID == int.Parse(SearchParameter)
                        select Clients;
                    break;

                case "Client_Name":
                    ReturnSearchQuery = from Clients in db.tbClients
                        where Clients.Client_Name.Contains(SearchParameter)
                        select Clients;
                    break;

                case "Client_Address":
                    ReturnSearchQuery = from Clients in db.tbClients
                        where Clients.Client_Address.Contains(SearchParameter)
                        select Clients;
                    break;

                case "Contact_Number":
                    ReturnSearchQuery = from Clients in db.tbClients
                        where Clients.Contact_Number.Contains(SearchParameter)
                        select Clients;
                    break;

                case "Contact_Email":
                    ReturnSearchQuery = from Clients in db.tbClients
                        where Clients.Contact_Email.Contains(SearchParameter)
                        select Clients;
                    break;

                case "Client_Type":
                    ReturnSearchQuery = from Clients in db.tbClients
                        where Clients.Client_Type == SearchParameter
                        select Clients;
                    break;
            }

            //Make new table to be returned later
            Table<tbClient> ReturnClientsTable = new Table<tbClient>();

            foreach (var item in ReturnSearchQuery)
            {
                //Query has to be converted to Table<tbClient>
            }

            //Table return to be used in datagridview
            return ReturnClientsTable;
        } 

代码中的ReturnSearchQuery具有IQueryable类型：

最后，您可以使用.DataSource将客户机列表绑定到DataGridView：

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谢谢，我会把它纳入我的项目！我找到了一个解决方法，但无法得到答案，那就是将UniversalClientSearch方法的返回类型更改为dynamic，然后只返回ReturnSearchQuery。

// The SQL query isn't run yet
IQueryable<tbClient> ReturnSearchQuery = from Clients in db.tbClients
            where <some condition>
            select Clients;

// Convert the IQueryable to a list. Here, the SQL query is run.
List<tbClient> clients = ReturnSearchQuery.ToList();

var d = new DataGridView();
d.DataSource = clients;