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(),-- 表名
 @strWhere VARCHAR(),-- 查询条件
 @columnNames VARCHAR(),-- 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() = 'ORDER BY ID' 

 -- recordCount
 DECLARE @strCountSql NVARCHAR()
 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()
 SET @strSql = 'SELECT TOP ' + CONVERT(VARCHAR(), @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(), (@pageSize * (@pageIndex - )))
 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 = ;
             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;
         }