Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

C# ÓÃSQLн¨Êý¾Ý¿â

1. ³ÌÐòÈçÏ£º
         string str = "Create Database " + "DBname";
         string con = "Data Source=10.0.0.249\\sql2005;Initial Catalog=master;Persist Security Info=True;User ID=sa;Password=sa";
            SqlConnection myConn = new SqlConnection(con);
            SqlCommand myCommand = new SqlCommand(str, myConn);
            try
            {
                myConn.Open();
                myCommand.ExecuteNonQuery();
                Console.WriteLine("SQL Óï¾äÖ´ÐÐÍê³É¡£", "MyProgram");
            }
            catch (System.Exception ex)
            {
                Console.WriteLine(ex.ToString(), "MyProgram");
            }
            finally
            {
                if (myConn.State == ConnectionState.Open)
                {
                    myConn.Close();
   


Ïà¹ØÎĵµ£º

Xml×Ö·û´®ÓëC#¶ÔÏóÖ®¼äÏ໥ת»»

ÎÒÃdz£³£ÐèÒª¶ÁÈ¡xmlÎļþ£¬°ÑÀïÃæµÄÐÅϢת»¯ÎªÎÒÃÇ×Ô¶¨ÒåµÄÀàÐÍ£¬»òÔò°É×Ô¶¨ÒåÀàÐÍת»¯ÎªXml×Ö·û´®¡£ÔÚÕâÀï½éÉÜÒ»¸ö±È½Ï¼òµ¥µÄ¶ÔÏóת»¯·½·¨¡£ÔÚÎÒ×Ô¼ºµÄFramworkÀïÃæÒ²¶à´ÎÓõ½¡£ÀïÃæÉæ¼°µ½½Úµã¡¢ÊôÐÔ¡¢¼¯ºÏ¡£
ʾÀýÒ» ¸ÃxmlÎļþÉæ¼°µ½ÊôÐÔ¡¢½Úµã¼¯ºÏ²»Éæ¼°¸ö½Úµã£º
<?xml version="1.0" encoding="utf-8"?>
<da ......

C#Éú³Écom×é¼þ£¬¹©aspµ÷ÓÃ

C#Éú³Écom×é¼þ£¬¹©aspµ÷ÓÃ
Ò»¡¢vs2005—н¨ÏîÄ¿—C#Àà¿â
Àà¿âÔ´ÂëÈçÏÂ(°üº¬½Ó¿Ú£¬À࣬ʼþ½Ó¿Ú)£º
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Data.SqlClient;
using System.Runtime.InteropServices;
namespace entryclass
{
   ......

C#¡¢ASP.NETÖÐrefºÍoutµÄÇø±ð

ÕâÁ½¸öÊý¾ÝÀàÐÍÊÇÎÒÃÇÔÚѧϰC#ÓïÑԵĹý³ÌÖÐÊý¾Ý±È½ÏÄѵÄÁ½¸öÊý¾ÝÀàÐÍ£¬²»¹ýËûÃǺÜÖØÒª£¬ËùÒÔÓбØÒªÄóöÀ´ËµËµËûÃǵÄʹÓ÷½·¨ºÍ²»Í¬Ö®´¦£¬Ï£Íû¶ÔÄãÓÐËù°ïÖú¡£
ÏÈ×ܵÄÀ´Ëµ£º
ͨ³£ÎÒÃÇÏò·½·¨Öд«µÝµÄÊÇÖµ.·½·¨»ñµÃµÄÊÇÕâЩֵµÄÒ»¸ö¿½±´,È»ºóʹÓÃÕâЩ¿½±´,µ±·½·¨ÔËÐÐÍê±Ïºó,ÕâЩ¿½±´½«±»¶ªÆú,¶øÔ­À´µÄÖµ²»½«Êܵ½Ó°Ïì.´ËÍâÎÒÃÇ ......

sql Íâ¼ü ɾ³ý

 1¡£ÆóÒµ¹ÜÀíÆ÷  
  ´ò¿ªÄ㽨ÓÐÍâ¼üµÄ±í£­£­ÓÒ»÷±í£­£­Éè¼Æ±í£­£­ÔÚÉÏ·½µã¿ª’¹ÜÀíÔ¼Êø‘£­£­½«¼¶Á¬É¾³ýºÍ¼¶Á¬¸üÐµĹµ´òÉϾͿÉÒÔÁË  
  2¡£²éѯ·ÖÎöÆ÷  
  alter   table   sc  
  add  
  constraint   forei     ......

sql ϵͳº¯Êý

1.×Ö·û´®º¯Êý
³¤¶ÈÓë·ÖÎöÓà 
datalength(Char_expr) ·µ»Ø×Ö·û´®°üº¬×Ö·ûÊý,µ«²»°üº¬ºóÃæµÄ¿Õ¸ñ  
substring(expression,start,length) ²»¶à˵ÁË,È¡×Ó´®  
right(char_expr,int_expr) ·µ»Ø×Ö·û´®ÓÒ±ßint_expr¸ö×Ö·û  
×Ö·û²Ù×÷Àà  
upper(char_expr) תΪ´óÐ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ