using System.Data; namespace Demo.Code { public static class ExtTable { /// <summary> /// Get the data of a page in the table /// </summary> /// <param name="data">Table data</param> /// <param name="pageIndex">Current page</param> /// <param name="pageSize">Page size</param> /// <param name="allPage">returns the total number of pages</param> /// <returns>Return the current page table data</returns> public static DataTable GetPage(this DataTable data, int pageIndex, int pageSize, out int allPage) { allPage = data.Rows.Count / pageSize; allPage += data.Rows.Count % pageSize == 0 ? 0 : 1; DataTable Ntable = data.Clone(); int startIndex = pageIndex * pageSize; int endIndex = startIndex + pageSize > data.Rows.Count ? data.Rows.Count : startIndex + pageSize; if (startIndex < endIndex) for (int i = startIndex; i < endIndex; i++) { Ntable.ImportRow(data.Rows[i]); } return Ntable; } /// <summary> /// Filter the contents of the table according to the field /// </summary> /// <param name="data">Table data</param> /// <param name="condition">条件</param> /// <returns></returns> /// public static DataTable GetDataFilter(DataTable data, string condition) { if (data != null && data.Rows.Count > 0) { if (condition.Trim() == "") { return data; } else { DataTable newdt = new DataTable(); newdt = data.Clone(); DataRow[] dr = data.Select(condition);//如:Select("id=123");Select("name='Tom'");Select("columnname1 like '%xx%'"); for (int i = 0; i < dr.Length; i++) { newdt.ImportRow((DataRow)dr[i]); } return newdt; } } else { return null; } } } }
[Reprint] C# uses DataTable to do paging query | Filter the content of the DataTable table according to the field
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