C# 用一列表示该表 数据表my_表； my_表=新数据表（“类别”）； my_Table.Columns.Add（“CategoryId”，typeof（string））； //向表中添加数据 对于（int my_Cnt=50；my_Cnt

下面是C#console应用程序正确输出的快照

谢谢你的提问

我已经有一段时间没有用C语言编写代码了。但就像一辆自行车，不需要很长时间就能骑上。T-SQL示例使用SSMS 2012完成，C#程序使用VS 2013完成。最新和最伟大的

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晚安

在SQL server management studio中检查用户是否将默认数据库设置为您尝试访问的数据库。我也犯了同样的错误，被困了好几天。最后发现用户已将

Master

设置为其“默认数据库”。

旧式连接让我痛苦地流泪。@Hogan-过去是，现在仍然是最糟糕的情况的绝对缩影。@Hogan我如何才能将旧式连接转换为更高效的连接join@HotCoolStud-对效率或正确性不作任何要求——但要有可读性语法请看我的答案。可以这样写，但问题仍然没有解决。@hotcoolstub-您是否尝试过

[DB\u user1212].[dbo].[CategoryIdArray]

？你到底给它起了什么名字？这只是一个命名/命名空间问题。我以与上面所述相同的方式命名了它，当我尝试[DB_user1212].[dbo].[CategoryIdArray]时，错误出现在类型名“DB_user1212.dbo.CategoryIdArray”包含的前缀数超过了最大值。最大值为1。@HotCoolStud-您检查了调用SP的用户的权限了吗？该用户有自定义类型的权限吗？如何检查它。很好的地方--此行也必须更改：

dt_Categories.Columns.Add（“Category”，typeof（String））非常好的解决方案，但没有人关注。哈哈努力。
CREATE TYPE [dbo].[CategoryIdArray] AS TABLE(
[CategoryId] [bigint] NULL
)

GO

ALTER  PROCEDURE [dbo].[GetNewestArticleByCatsPageWise]
  @dt as [dbo].[CategoryIdArray] READONLY,
  @PageIndex INT = 1
  ,@PageSize INT = 10
  ,@PageCount INT OUTPUT
AS
BEGIN
      SET NOCOUNT ON;
      SELECT ROW_NUMBER() OVER
            (
                  ORDER BY [dateadded] 
            )AS RowNumber,[desid]


INTO #Results
  FROM [DB_user1212].[dbo].[discussions] as d , [DB_user1212].[dbo].[CategoryMap] as c where d.desid=c.[Topic Id] and c.[Category Id] in (select CategoryId from [dbo].[CategoryIdArray]) and [TopicType]='1' order by [dateadded]

  DECLARE @RecordCount INT
  SELECT @RecordCount = COUNT(*) FROM #Results

  SET @PageCount = CEILING(CAST(@RecordCount AS DECIMAL(10, 2)) / CAST(@PageSize AS DECIMAL(10, 2)))
  PRINT       @PageCount

  SELECT * FROM #Results
  WHERE RowNumber BETWEEN(@PageIndex -1) * @PageSize + 1 AND(((@PageIndex -1) * @PageSize + 1) + @PageSize) - 1

  DROP TABLE #Results
END

 public List<String> getNewestArticleByCategoryPageWise( long[] categoryId)
  {
        List<string> topicId= new List<string>();
      try
      {

        DataTable dt_Categories = new DataTable();
        dt_Categories.Columns.Add("Category", typeof(String));
        DataRow workRow;
        foreach(long cat in categoryId)
        {
          workRow = dt_Categories.NewRow();
          workRow["Category"] = cat;
          dt_Categories.Rows.Add(workRow);
        }
        int pageIndex = 1;
            SqlCommand cmd = new SqlCommand("dbo.GetNewestArticleByCatsPageWise", con);
            cmd.CommandType = CommandType.StoredProcedure;
            cmd.Parameters.AddWithValue("@PageIndex", pageIndex);
            cmd.Parameters.AddWithValue("@PageSize", 10);
            cmd.Parameters.Add("@PageCount", SqlDbType.Int, 4).Direction = ParameterDirection.Output;
            SqlParameter tvparam = cmd.Parameters.AddWithValue("@dt", dt_Categories);
            tvparam.SqlDbType = SqlDbType.Structured;
          con.Open();
            sdr= cmd.ExecuteReader();
      while(sdr.Read())
      {
          topicId.Add(sdr.GetString(0));
      }
          con.Close();
      }
      catch(Exception ex)
      {
          con.Close();
          throw ex;
      }
      return topicId;

  }

SELECT ROW_NUMBER() OVER (ORDER BY [dateadded]) AS RowNumber,[desid]
INTO #Results
FROM [DB_user1212].[dbo].[discussions] as d 
JOIN [DB_user1212].[dbo].[CategoryMap] as c ON d.desid=c.[Topic Id] 
JOIN [dbo].[CategoryIdArray] arr ON c.[Category Id] = arr.CategoryID
WHERE [TopicType]='1'

workRow["Category"] = cat;

workRow["CategoryId"] = cat;

...
and c.[Category Id] in (
    select CategoryId from @dt -- select from the actual parameter, not its TYPE
)
...

--
-- Create a test db
--

USE [master];
go

CREATE DATABASE [Test];
GO

--
-- Create the user defined type
--

USE [Test];
go

CREATE TYPE [CategoryIdArray] AS 
TABLE
(
[CategoryId] [bigint] NULL
);



--
-- Create skelton tables
--

create table Discussions
(
  dis_id int identity (1,1),
  dis_name varchar(64),
  dis_added_dte datetime default getdate()
);
go

create table CategoryMap
(
  cat_id int identity(1,1),
  cat_topic_id int,
  cat_topic_type char(1)
);
go

-- clear tables
truncate table Discussions;
truncate table CategoryMap;
go


--
-- Create 100 rows of dummy data
--

declare @cnt int = 0;
while @cnt < 100
begin
    insert into Discussions (dis_name) 
    values ('sample discussion record # ' + str(@cnt, 2, 0));

    insert into CategoryMap (cat_topic_id, cat_topic_type) 
    values (@cnt+1, '1')

    set @cnt = @cnt + 1;
end;
go


--
-- Show the sample data
--

select * from Discussions;
go

select * from CategoryMap;
go

--
-- Create my procedure
--

create  procedure [GetArticlesByPage]
  @Tvp as [CategoryIdArray] READONLY,
  @PageIndex INT = 1,
  @PageSize INT = 10,
  @PageCount INT OUTPUT
AS
BEGIN

  -- Declare variables
  DECLARE @var_recs int = 0;
  DECLARE @var_offset int = 0;

  -- Do not count the records
  SET NOCOUNT ON;

  -- Start of paging
  SET @var_offset = @var_offset + ((@PageIndex - 1) * @PageSize);

  -- Set page count variable
  SELECT @var_recs = count(*)
  FROM 
      [dbo].[Discussions] as d 
  JOIN 
      [dbo].[CategoryMap] as c 
  ON 
      d.dis_id = c.cat_topic_id 
  JOIN 
      @TVP a 
  ON 
      c.cat_id = a.CategoryId
  WHERE 
      cat_topic_type  =  '1';

  set @PageCount = ceiling(cast(@var_recs as real) / cast(@PageSize as real));


  --
  -- Return the record set
  -- 

  SELECT 
      dis_id
  FROM 
      [dbo].[Discussions] as d 
  JOIN 
      [dbo].[CategoryMap] as c 
  ON 
      d.dis_id = c.cat_topic_id 
  JOIN 
      @TVP a 
  ON 
      c.cat_id = a.CategoryId
  WHERE 
      cat_topic_type  =  '1'
  ORDER BY 
      dis_added_dte
  OFFSET @var_offset ROWS 
  FETCH NEXT @PageSize ROWS ONLY;

END;
GO

--
-- Call the stored procedure
--

-- instantiate tvp
DECLARE @my_tvp as [CategoryIdArray];
DECLARE @my_page_cnt as int;

-- add 25 entries
declare @cnt int = 25;
while @cnt < 50
begin
    insert into @my_tvp (CategoryId) 
    values (@cnt + 1);
    set @cnt = @cnt + 1;
end;

-- show the data in the tvp
select * from  @my_tvp

-- call the function
exec [GetArticlesByPage] @my_tvp, 1, 10, @PageCount = @my_page_cnt OUTPUT;

-- show the data in the output
select @my_page_cnt as 'my_pages';

go    

//
//  Good Ref. - http://msdn.microsoft.com/en-us/library/ms254937(v=vs.110).aspx
//

// Basic stuff from C# console app
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

// Required for data table
using System.Data;
using System.Data.SqlClient;

// Standard stuff ...
namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            // Debug info
            Console.WriteLine("Test - Start");

            // Create the table with one column
            DataTable my_Table;
            my_Table = new DataTable("Category");
            my_Table.Columns.Add("CategoryId", typeof(string));

            // Add data to table
            for (int my_Cnt = 50; my_Cnt < 75; my_Cnt++)
            {
                DataRow my_Row = my_Table.NewRow();
                my_Row["CategoryId"] = my_Cnt.ToString();
                my_Table.Rows.Add(my_Row);
            }

            // Debug info
            Console.WriteLine("Test - created data set");

            // Create a connection
            SqlConnection my_Conn;
            string str_Conn = "Server=localhost;Database=Test;Trusted_Connection=True;";
            my_Conn = new SqlConnection(str_Conn);

            // Debug info
            Console.WriteLine("Test - create connection");

            // Create the command and set its properties.
            SqlCommand my_Cmd = new SqlCommand();
            my_Cmd.Connection = my_Conn;
            my_Cmd.CommandText = "dbo.GetArticlesByPage";
            my_Cmd.CommandType = CommandType.StoredProcedure;

            // Add parameter 0
            SqlParameter my_Parm0 = new SqlParameter();
            my_Parm0.ParameterName = "@Tvp";
            my_Parm0.SqlDbType = SqlDbType.Structured;
            my_Parm0.Direction = ParameterDirection.Input;
            my_Parm0.Value = my_Table;
            my_Cmd.Parameters.Add(my_Parm0);

            // Add parameter 1
            SqlParameter my_Parm1 = new SqlParameter();
            my_Parm1.ParameterName = "@PageIndex";
            my_Parm1.SqlDbType = SqlDbType.Int;
            my_Parm1.Direction = ParameterDirection.Input;
            my_Parm1.Value = 2;
            my_Cmd.Parameters.Add(my_Parm1);

            // Add parameter 2
            SqlParameter my_Parm2 = new SqlParameter();
            my_Parm2.ParameterName = "@PageSize";
            my_Parm2.SqlDbType = SqlDbType.Int;
            my_Parm2.Direction = ParameterDirection.Input;
            my_Parm2.Value = 5;
            my_Cmd.Parameters.Add(my_Parm2);

            // Add parameter 3
            SqlParameter my_Parm3 = new SqlParameter();
            my_Parm3.ParameterName = "@PageCount";
            my_Parm3.SqlDbType = SqlDbType.Int;
            my_Parm3.Direction = ParameterDirection.Output;
            my_Parm3.Value = 5;
            my_Cmd.Parameters.Add(my_Parm3);

            // Open the connection
            my_Conn.Open();

            // Debug info
            Console.WriteLine("Test - execute reader");

            // Execute the reader
            SqlDataReader my_Reader = my_Cmd.ExecuteReader();
            if (my_Reader.HasRows)
            {
                while (my_Reader.Read())
                {
                    Console.WriteLine("{0}", my_Reader[0].ToString());
                }
            }
            else
            {
                Console.WriteLine("No rows found.");
            }

            // Close the reader
            my_Reader.Close();

            // Number of pages (output after reader - order is important)
            Console.WriteLine("Pages = ");
            Console.WriteLine(my_Cmd.Parameters["@PageCount"].Value.ToString());

            // Close the connection
            my_Conn.Close();

            // Debug info
            Console.WriteLine("Test - close connection");

            // Debug info
            Console.WriteLine("Test - End");

            // Pause to view output
            Console.Read();
        }
    }
}