using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Data; namespace ConsoleApplication31 { class Program { public static Array ReturnArray() { , , ]; ; i < ; i++) { ; j < ;
using System; using System.IO; using System.Data; using System.Reflection; using System.Diagnostics; using System.Configuration; using System.Collections; using Excel; namespace thscjy { /// /// 套用模板输出Excel,生成xls文件和html文件 /// Author: Liu Wen ///
.客户端代码 public static void FileMoveInVirtualMachineForCompressor() { var obj = new object(); string ip = "127.0.0.1"; ; List<string> files = Directory.GetFiles(@"C:\Users\admin\Desktop\sendFile").ToList(); Dictionary<string, by
DataTable Linq查询 1.查询DataRow IEnumerable<DataRow> q1 = from r in dt.AsEnumerable() == select r; 2.查询某个字段 var query2 = from pl in dt.AsEnumerable( ) select pl.Field<string>("Name"); 3.group by var query = from r in dt.AsEnumerable() g
http://www.c-sharpcorner.com/blogs/dynamic-objects-conveting-into-data-table-in-c-sharp1 public static DataTable GetDataTableFromObjects(object[] objects) { ) { Type t = objects[].GetType(); DataTable dt = new DataTable(t.Name); foreach (PropertyInfo
需要对DataTable分组求和的语法:VB.net 和C#中还有点不太一样.最后试了好多方法,要这么写 我的dataTabel数据: (From p In dataTabel.AsEnumerable() Group By x= New With { Key.a =p.Item("name")} Into Grp = Group Select dataTabel.Clone.LoadDataRow (New Object() {grp()(),grp.Sum(Function ( r
1.将泛型集合类转换成DataTable(表中无数据时使用): public static DataTable NullListToDataTable(IList list) { var result = new DataTable(); ) return result; ].GetType().GetProperties(); foreach (var pi in propertys) { if (pi != null) { result.Columns.Add(pi.Name, pi.Pro