关于 ASP.net + JQuery + JQGrid + JSON.net 的简单应用(三)

最后是SQLCOMMENT这个类的操作了,这里公布两个方法的源码,算法不是很好,大家有更好的算法记得告诉我哦!

public DataSet getAllComments()
        {
string strSql = string.Empty;

            strSql = "select CommentID,TypeID,FromID,[Name],Contents,PublishDate,IP from tb_Comment ";

return BasicSQLHelper.Query(strSql, null);
        }

/// <summary>
/// 根据指定条件输送数据
/// </summary>
/// <param name="start">开始位置</param>
/// <param name="end">结束位置</param>
/// <param name="orderid">按什么排序</param>
/// <param name="orderway">排序方式:asc/desc</param>
/// <returns></returns>
        public DataSet getCommentsFromTo(int start, int end, string orderid, string orderway, int page)
        {
string strSql = string.Empty;

//保证end要比start大
            if (start > end)
            {
int temp = start;
                start = end;
                end = temp;
            }

            strSql = "SELECT TOP " + (end - start + 1) + " * FROM tb_Comment ";
            strSql += "WHERE ";
            strSql += "( ";
            strSql += orderid + " NOT IN ";
            strSql += "( ";
if (page == 1)
            {
                strSql += "SELECT TOP " + (start - 1) + " " + orderid + " FROM tb_Comment ";
            }
else
            {
                strSql += "SELECT TOP " + (start - 2) + " " + orderid + " FROM tb_Comment ";
            }
            strSql += "order by  " + orderid + " " + orderway + " ";
            strSql += ") ";
            strSql += ") ";
            strSql += "order by  " + orderid + " " + orderway + " ";

return BasicSQLHelper.Query(strSql, null);
        }