存储过程分页查询和在ado.net中的使用，返回查询总数

1、创建查询分页的存储过程

CREATE PROCEDURE PageQuery
@tableName VARCHAR(50),-- 表名
@strWhere VARCHAR(1000),-- 查询条件
@columnNames VARCHAR(1000),-- 查询要显示的列名
@pageIndex INT,-- 页面索引（第几页）
@pageSize INT,-- 页面大小
@recordCount INT OUTPUT -- 查询总数

AS

BEGIN
 DECLARE @strOrderBy NVARCHAR(50) = 'ORDER BY ID' 

-- recordCount
DECLARE @strCountSql NVARCHAR(1000)
SET  @strCountSql='SELECT @RecordCount= COUNT(*) FROM'+@tableName +' WHERE 1 = 1' + @strWhere 
EXEC sp_executesql @strCountSql, N'@RecordCount int OUTPUT', @recordCount OUTPUT

-- query page
DECLARE @strSql NVARCHAR(1000)
SET @strSql = 'SELECT TOP ' + CONVERT(VARCHAR(10), @pageIndex*@pageSize) + ' ROW_NUMBER() OVER('+ @strOrderBy +') AS RowID, '+@columnNames+' FROM '+ @tableName+' WHERE 1 = 1' + @strWhere 
SET @strSql = 'SELECT * FROM (' + @strSql + ') as temp WHERE temp.RowID > ' + CONVERT(VARCHAR(10), (@pageSize * (@pageIndex - 1)))
EXEC(@strSql)

END;

为了通用，我把表名，要显示的列名，查询条件都当参数传了进来，不需要的可以去掉某些参数。

2、在ADO.NET中使用

   public virtual DataTable QueryProcedureDataTable(string tableName,string strWhere,string columns,int pageIndex,int pageSize,out int recordCount)
        {
            SqlConnection conn = (SqlConnection)Context.Database.Connection;

            SqlCommand cmd = new SqlCommand();
            cmd.Connection = conn;
            cmd.CommandType = CommandType.StoredProcedure;
            cmd.CommandText = "PageQuery"; //存储过程名称 

            //存储过程参数
            recordCount = 0;
            SqlParameter[] sqlParameters = new SqlParameter[]
            {
                new SqlParameter("tableName",tableName),
                new SqlParameter("strWhere",strWhere),
                new SqlParameter("columnNames",columns),
                new SqlParameter("pageIndex",pageIndex),
                new SqlParameter("pageSize",pageSize),
                new SqlParameter("recordCount",recordCount)
            };            
            cmd.Parameters.AddRange(sqlParameters);

            SqlDataAdapter adapter = new SqlDataAdapter(cmd);
            DataTable table = new DataTable();
            adapter.Fill(table);

            conn.Close();
            conn.Dispose();
            return table;
        }