usingSystem.Text;//StringBuilderusingSystem.Xml;//xmlusingSystem.Collections;//SortedListusingSystem.Web.UI;//Clien
算法的复杂度就降低为 O(n) ，速度大大提高。需求：前后数据x条不动，中间随机删除N条记录实现： Dictionary<string, int>
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Management;//添加引用 using System.IO; namespace ConsoleApplication1 { class Program { ...
代码：实体类product.cs：
using System; using System.Data; using System.Data.SqlClient; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI;
添加对using System.Runtime.InteropServices的引用 [ DllImport ( "USER32.DLL" ) ] public static extern int GetSystemMenu(int hwnd, int bRevert); [ DllImport ( "USER32.DLL" ) ] public static extern in...
引用COM：Microsoft Office 11.0 Object Library 引用类： using System; using System.Windows.Forms; using Excel = Microsoft.Office.Interop.Excel; 调用： private void button1_Click(objectsender,
//记得加folderBrowserDialog1openFileDialog1控件usingSystem.Data.SqlClient;//连接数据库公共变量namespaceWindowsApplication1.GoodMenhod{classgetSqlConnection{stringsql
c# 异步更新UI 不阻塞 流畅Task task = Task.Factory.StartNew(() =>{ DoLongRunningWork(); // 耗时运算});Task UITask= task.ContinueWith(() => { this.TextBlock1.Text = "Complete"; //运算后 赋值 },
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