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This article mainly introduces the method of building paging applications in C#, and analyzes the specific steps and related implementation techniques of C# to create pagination function in combination with examples. Friends in need can refer to it. Next
The examples in this article describe how to build paging applications in C#. Share it with everyone for your reference, the details are as follows:
1, SQL statement
WITH [temptableforStockIC] AS ( SELECT *,ROW_NUMBER() OVER (ORDER BY CreateTime DESC) AS RowNumber FROM [StockIC] WHERE 1=1 AND Model = 'FTY765OP' ) SELECT * FROM [temptableforStockIC] WHERE RowNumber BETWEEN 1 AND 10
2, background method
/// <summary> /// 表名 /// </summary> private const string _tableNane = "StockIC"; /// <summary> /// 获取库存列表 /// </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>(); //型号 if (!String.IsNullOrEmpty(param.Model)) { sqlCondition.AppendFormat(" AND Model LIKE '%{0}%'", param.Model); } //开始时间 if (param.BeginTime.HasValue) { sqlCondition.Append(" AND CreateTime >= @BeginTime"); sqlParams.Add(new SqlParameter("@BeginTime", param.BeginTime.Value)); } //结束时间 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"; } //分页 param.PageIndex = param.PageIndex - 1; Int64 startNumber = param.PageIndex * param.PageSize + 1; Int64 endNumber = startNumber + param.PageSize - 1; //拼装SQL sql = String.Format(sql, _tableNane, param.OrderBy, sqlCondition, startNumber, endNumber); //执行SQL语句 DataSet dataSet = DBHelper.GetReader(sql.ToString(), sqlParams.ToArray()); list = TranToList(dataSet); return list; }
Note: DBHelper.GetReader() method, TranToList() Please improve the methods yourself.
Some calculation methods
//分页 Int64 startNumber = (param.PageIndex - 1) * param.PageSize + 1; Int64 endNumber = startNumber + param.PageSize - 1; //总页数 = (数据总数 + 分页大小 -1) / 分页大小 TotalPage = (TotalCount + PageSize - 1) / PageSize;
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