1、SQL分頁語法

SELECT * FROM(
	SELECT ROW_NUMBER() OVER(ORDER BY 排序條件) AS RowNumber,* FROM 表
	WHERE 條件
) TEMP_TABLE WHERE RowNumber BETWEEN (pageIndex - 1) * pageSize + 1 AND pageIndex * pageSize

2、後臺方法

/// <summary>
/// 表名
/// </summary>
private const string _tableNane = "StockIC";

/// <summary>
/// 獲取庫存列表
/// </summary>
public List<StockIcResult> GetStockIcList(StockIcParam param)
{
    List<StockIcResult> list = new List<StockIcResult>();
    string sql = "WITH [temptablefor{0}] AS";
    sql += " (SELECT *,ROW_NUMBER() OVER (ORDER BY {1}) AS RowNumber FROM [{0}] WHERE 1=1 {2})";
    sql += " SELECT * FROM [temptablefor{0}] WHERE RowNumber BETWEEN {3} AND {4}";
    StringBuilder sqlCondition = new StringBuilder();
    List<SqlParameter> sqlParams = new List<SqlParameter>();
    //型號
    if (!String.IsNullOrEmpty(param.Model))
    {
        sqlCondition.AppendFormat(" AND Model LIKE '%{0}%'", param.Model);
    }
    //開始時間
    if (param.BeginTime.HasValue)
    {
        sqlCondition.Append(" AND CreateTime >= @BeginTime");
        sqlParams.Add(new SqlParameter("@BeginTime", param.BeginTime.Value));
    }
    //結束時間
    if (param.EndTime.HasValue)
    {
        sqlCondition.Append(" AND CreateTime < @EndTime");
        sqlParams.Add(new SqlParameter("@EndTime", param.EndTime.Value.AddDays(1)));
    }
    //排序
    if (String.IsNullOrWhiteSpace(param.OrderBy))
    {
        param.OrderBy = " CreateTime DESC";
    }
    //分頁
    Int64 startNumber = (param.PageIndex - 1) * param.PageSize + 1;
    Int64 endNumber = param.PageIndex * param.PageSize;
    //拼裝SQL
    sql = String.Format(sql, _tableNane, param.OrderBy, sqlCondition, startNumber, endNumber);
    //執行SQL語句
    DataSet dataSet = DBHelper.GetReader(sql.ToString(), sqlParams.ToArray());
    list = TranToList(dataSet);
    return list;
}
 

注意：DBHelper.GetReader()方法、TranToList()方法等請自己完善。

一些計算方法

//分頁
Int64 startNumber = (param.PageIndex - 1) * param.PageSize + 1;
Int64 endNumber = param.PageIndex * param.PageSize;

//總頁數 = (資料總數 + 分頁大小 -1) / 分頁大小
TotalPage = (TotalCount + PageSize - 1) / PageSize;