<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[jacklong2的专栏]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/jacklong2</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; jacklong2]]></copyright><item><title><![CDATA[sql server 附加mdf文件出错]]></title><link>https://blog.youkuaiyun.com/jacklong2/article/details/8747338</link><guid>https://blog.youkuaiyun.com/jacklong2/article/details/8747338</guid><author>jacklong2</author><pubDate>Mon, 01 Apr 2013 16:35:49 +0800</pubDate><description><![CDATA[附加数据库失败，操作系统错误 5:"5(拒绝访问。）
解决方案
      ： 找到xxx.MDF与xxx_log.LDF文件和所在的文件夹，更改权限，右键-属性-安全-user --完全]]></description><category></category></item><item><title><![CDATA[C# 开发者最经常犯的 8 个错误]]></title><link>https://blog.youkuaiyun.com/jacklong2/article/details/8669662</link><guid>https://blog.youkuaiyun.com/jacklong2/article/details/8669662</guid><author>jacklong2</author><pubDate>Wed, 13 Mar 2013 18:00:54 +0800</pubDate><description><![CDATA[1. 使用字符串连接代替StringBuilder
2.错误地重新抛出异常
3. 没有使用 ‘using’ 语句来销毁对象
4. 除了对象集合外，使用'foreach' 代替 'for'
5. 对数据库进行读取或保存操作的时候，使用多次的DB调用

转载（http://blog.goyello.com/2013/01/07/8-most-common-mistakes-c-develo]]></description><category></category></item><item><title><![CDATA[用户、组或角色 在当前数据库中已存在]]></title><link>https://blog.youkuaiyun.com/jacklong2/article/details/8569765</link><guid>https://blog.youkuaiyun.com/jacklong2/article/details/8569765</guid><author>jacklong2</author><pubDate>Mon, 04 Feb 2013 17:27:35 +0800</pubDate><description><![CDATA[use 数据库名
go
sp_change_users_login 'update_one' ,'登录名i','密码']]></description><category></category></item><item><title><![CDATA[网站突然打不开,解决办法]]></title><link>https://blog.youkuaiyun.com/jacklong2/article/details/7920063</link><guid>https://blog.youkuaiyun.com/jacklong2/article/details/7920063</guid><author>jacklong2</author><pubDate>Wed, 29 Aug 2012 14:28:33 +0800</pubDate><description><![CDATA[(1)重启服务器(在影响比较小的情况下)
(2)重新启动服务里面的,world wide web
(3)重新注册asp.net ,运行  C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\aspnet_regiis.exe -i
iis根目录,web 服务扩展,---asp.net(选择版本)---允许]]></description><category></category></item><item><title><![CDATA[response.end() 正在中止线程]]></title><link>https://blog.youkuaiyun.com/jacklong2/article/details/7884902</link><guid>https://blog.youkuaiyun.com/jacklong2/article/details/7884902</guid><author>jacklong2</author><pubDate>Mon, 20 Aug 2012 09:04:07 +0800</pubDate><description><![CDATA[不用try catch就不会有问题了。当然如果一定要用try catch，放在finally里面或者放在最外面就行了]]></description><category></category></item><item><title><![CDATA[命名空间"system.web"中不存在类型或命名空间名称security"错误解决方(控制台)]]></title><link>https://blog.youkuaiyun.com/jacklong2/article/details/7824586</link><guid>https://blog.youkuaiyun.com/jacklong2/article/details/7824586</guid><author>jacklong2</author><pubDate>Thu, 02 Aug 2012 20:45:14 +0800</pubDate><description><![CDATA[在win7,vs2010下添加System.web,目标框架选择.net Framework4]]></description><category></category></item><item><title><![CDATA[IIs 常见的几种错误(win764位)]]></title><link>https://blog.youkuaiyun.com/jacklong2/article/details/7823929</link><guid>https://blog.youkuaiyun.com/jacklong2/article/details/7823929</guid><author>jacklong2</author><pubDate>Thu, 02 Aug 2012 17:36:26 +0800</pubDate><description><![CDATA[1. CS0016: 未能写入输出文件“c:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\web
解决办法: C:\Windows\Temp 目录,属性->安全->编辑->添加 IIS_IUSERS用户，赋予"完全控制"权限


2.调用 Dll "试图加载格式不正确的程序。 (异常来自 HRESUL]]></description><category></category></item><item><title><![CDATA[获取 kindeditor 中textarea 的值]]></title><link>https://blog.youkuaiyun.com/jacklong2/article/details/7757041</link><guid>https://blog.youkuaiyun.com/jacklong2/article/details/7757041</guid><author>jacklong2</author><pubDate>Tue, 17 Jul 2012 21:40:32 +0800</pubDate><description><![CDATA[在使用kind Editor时，想要利用ajax传值，自动获取文章标签，发现文本编辑器在更新时可以用


$(“#editor”).html();


获取文本内容，可是的创建时怎么也不能获取，利用FF的firebug查看到自己所写的内容在一个iframe中，于是想从iframe中获取文本，想要用


$(“ifame”).html();获取内容，可是依然不行，最终终于找到了解决]]></description><category></category></item><item><title><![CDATA[未在本地计算机上注册“Microsoft.Jet.OLEDB.4.0”提供程序。]]></title><link>https://blog.youkuaiyun.com/jacklong2/article/details/7756877</link><guid>https://blog.youkuaiyun.com/jacklong2/article/details/7756877</guid><author>jacklong2</author><pubDate>Tue, 17 Jul 2012 20:55:16 +0800</pubDate><description><![CDATA[在64位平台上,解决的方法是：项目右键->属性->生成->目标平台->X86


The 'Microsoft.Ace.OleDb.12.0' provider is not registered on the local machine.



安装：AccessDatabaseEngine.exe]]></description><category></category></item><item><title><![CDATA[将Page_Load放在aspx页面]]></title><link>https://blog.youkuaiyun.com/jacklong2/article/details/7694954</link><guid>https://blog.youkuaiyun.com/jacklong2/article/details/7694954</guid><author>jacklong2</author><pubDate>Wed, 27 Jun 2012 09:19:30 +0800</pubDate><description><![CDATA[protected void Page_Load(object sender, EventArgs e)
{
    List a = new List();
    a.Add(10);
    Response.Write(a[0]);
    Response.Write("当前的时间" + DateTime.Now.ToString());
}]]></description><category></category></item><item><title><![CDATA[生成xml(两种方法)]]></title><link>https://blog.youkuaiyun.com/jacklong2/article/details/7694942</link><guid>https://blog.youkuaiyun.com/jacklong2/article/details/7694942</guid><author>jacklong2</author><pubDate>Wed, 27 Jun 2012 09:14:51 +0800</pubDate><description><![CDATA[方法一: 使用Dataset,将数据直接生成到xml中
        SqlConnection conn = new SqlConnection();
conn.ConnectionString = "Server=127.0.0.1;User ID=sa;Password=sa;Database=northwind;Persist Security Info=True";
conn.O]]></description><category></category></item><item><title><![CDATA[由于代码已经过优化或者本机框架位于调用堆栈之上,无法计算表达式的值]]></title><link>https://blog.youkuaiyun.com/jacklong2/article/details/7694662</link><guid>https://blog.youkuaiyun.com/jacklong2/article/details/7694662</guid><author>jacklong2</author><pubDate>Tue, 26 Jun 2012 23:59:14 +0800</pubDate><description><![CDATA[使用Response.Redirect或者Server.Transfer方法,在try....catch中,将会出现"由于代码已经过优化或者本机框架位于调用堆栈之上,无法计算表达式的值",报错的原因是,这两种方法都是在内部调用Response.End(),解决办法:
方法一:在Response.Redirect后加return
方法二:使用重载函数Response.Redirect(Strin]]></description><category></category></item><item><title><![CDATA[压缩zip文件(两种方法)]]></title><link>https://blog.youkuaiyun.com/jacklong2/article/details/7694622</link><guid>https://blog.youkuaiyun.com/jacklong2/article/details/7694622</guid><author>jacklong2</author><pubDate>Tue, 26 Jun 2012 23:51:57 +0800</pubDate><description><![CDATA[首先从官方网站下载最新版本dll文件：http://www.icsharpcode.net/OpenSource/SharpZipLib/Download.aspx


方法一:用SharpZipLib中的FastZip 类进行zip解压和压缩(此方法不能压缩空文件夹,而且压缩之后解压是没有根文件夹)


Using System.IO;
Using ICSharpCode.Shar]]></description><category></category></item><item><title><![CDATA[HttpWebRequest使用]]></title><link>https://blog.youkuaiyun.com/jacklong2/article/details/7694609</link><guid>https://blog.youkuaiyun.com/jacklong2/article/details/7694609</guid><author>jacklong2</author><pubDate>Tue, 26 Jun 2012 23:36:20 +0800</pubDate><description><![CDATA[protected void Page_Load(object sender, EventArgs e)
    {
    string aa= httpRequest("http://www.baidu.com");
      
    }
 
   //httP请求
    public static string httpRequest(string url)
    {]]></description><category></category></item><item><title><![CDATA[从客户端检测到有潜在危险(三种解决办法)]]></title><link>https://blog.youkuaiyun.com/jacklong2/article/details/7694589</link><guid>https://blog.youkuaiyun.com/jacklong2/article/details/7694589</guid><author>jacklong2</author><pubDate>Tue, 26 Jun 2012 23:29:40 +0800</pubDate><description><![CDATA[方法一:在web.cofig, 中写入 
方法二:在aspx页面开头写入,vaildaterequest=false
方法三(推荐):在当前页面写入page_error()函数,处理所有页面捕获而没有处理的异常.
protectedvoid Page_Error(object sender, EventArgs e)
{
Exception ex = Server.GetLastErro]]></description><category></category></item><item><title><![CDATA[Oracle中ROW_NUMBER和rownum 分页的使用]]></title><link>https://blog.youkuaiyun.com/jacklong2/article/details/7694511</link><guid>https://blog.youkuaiyun.com/jacklong2/article/details/7694511</guid><author>jacklong2</author><pubDate>Tue, 26 Jun 2012 23:07:30 +0800</pubDate><description><![CDATA[row_number 可以使用between .... and .. ,而rownum不可以使用,
Row_number: Select * from (
                          SELECT 字段名, ROW_NUMBER() OVER (ORDER BY  排序名 desc) AS 新列名  FROM 表名 ) where 新列名 between 起始行  an]]></description><category></category></item></channel></rss>