Online active users counter in ASP.NET
With this tool which is written for ASP.NET, it is possible to count the number of online users, members and guest users in web sites.
Installation
The tool installation is very simple and only takes a few minutes.
Step one - Add Reference:
After downloading the attachment, you should add a reference to the project. If you know how to add references please skip this step.
To add the reference, right click on your solution and select "Add Reference" from the menu. Then select the "OnlineActiveUsers.dll" file. Now the reference is added to the solution.
Step two - Change configuration:
Open the "Web.config" file from your project (If this file is absent, right click on your project and from "Add new item", select "Web configuration file"). Then add this code on "web.config" file.
<httpModules>
<add name="OnlineActiveUsers" type="OnlineActiveUsers.OnlineUsersModule"/>
</httpModules>
Note that this code should be pla ......
asp.net中自带的CutString只能截取字符数量的长度,但中英文字符数有差异,一个中文字等同于二个英文字符的宽度,这样对截取后的效果不理想.使用以下的方法就能解决.
//调用方法
string title=BLL.CutStr.CutString("标题",10);using System;
using System.Collections.Generic;
using System.Text;
namespace BLL
{
public class CutStr
{
public static string CutString(string str, int length)
{
if (str == "" )
{
str = "没有信息";
}
else
{
......
最近在看《asp.net通用模块及典型系统开发实例导航》，其中用到了MD5加密，代码如下： /// <summary>
/// 字符串加密函数
/// </summary>
/// <param name="strInput">输入被加密的字符串</param>
/// <returns>加密后的字符串</returns>
public static string Encrypt(string strInput)
{
//转换为UTF8编码
byte[] b = System.Text.Encoding.UTF8.GetBytes(strInput);
//计算字符串UTF8编码后的MD5哈希值，并转换为字符串
MD5 md5 = new MD5CryptoServiceProvider();
return System.Text.Encoding.UTF8.GetString(md5.ComputeHash(b));
}
在IE下测试了，在数据库里看到的确实是加密之后的字符串。
现在考虑的问题是，该如何实现解密？ ......
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