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控件滚动方法：
//具体方法
//movegroup(string u, panel p1, panel p2)
//movegroup(方向<或>,被移走的控件,被移入的控件)
//注意还要添加两个timer ：return，next ， interval = 10
public void movegroup(string u, panel p1, panel p2)
{
if (u == ">") //这是向右，
{
up1 = p1;
up2 = p2;
p2.visible = true;
p1.enabled = false;
p2.enabled = false;
next.enabled = true;
}
if (u == "<")
{
up1 = p1;
up2 = p2;
p2.visible = true;
p1.enabled = false;
p2.enabled = false;
return.enabled = true;
}
}
panel up1, up2;
int a = 0;
int b = -580;
int i = 0;
int j = 580;
private void next_tick(object sender, eventargs e)
{
i -= 30;
j -= 30;
up1.location = new point(i, up1.location.y);
up2.location = new point(j, up2.location.y);
if (i <= -580 || j <= 0)
{
next.enabled = false;
up2.enabled = true;
up1.enabled = false;
up1.visible = false;
i = 0;
j = 580;
}
}
private void return_tick(object sender, eventargs e)
{
a += 30;
b += 30;
up1.location = new point(a, up1.location.y);
up2.location = new point(b, up2.location.y);
if (a >= 580 || b >= 0)
{
return.enabled = false;
up2.enabled = true;
up1.visible = false;
up1.enabled = false;
a = 0;
b = -580;
}
}
加密原理：
密码+问题+答案的md5 +“/”+加密后的串 组成一个文本文件，（二进制更好了）
解密原理：
先分离出文件里的 密码+问题+答案的md5在与用户输入的密码+问题+答案的md5对比
如果相符则 以此密码解密文件
如果不相符则 提示密码问题及答案错误
我使用des加密，这是一个类
namespace pd_kernel
{
public class encrypt
{
/// <summary>
/// 进行des加密。
/// </summary>
/// <param name="ptoencrypt">要加密的字符串。</param>
/// <param name="skey">密钥，且必须为8位。</param>
/// <returns>以base64格式返回的加密字符串。</returns>
public static string desencrypt(string ptoencrypt, string skey)
{
using (descryptoserviceprovider des = new descryptoserviceprovider())
{
byte[] inputbytearray = encoding.utf8.getbytes(ptoencrypt);
des.key = asciiencoding.ascii.getbytes(skey);
des.iv = asciiencoding.ascii.getbytes(skey);
system.io.memorystream ms = new system.io.memorystream();
using (cryptostream cs = new cryptostream(ms, des.createencryptor(), cryptostreammode.write))
{
cs.write(inputbytearray, 0, inputbytearray.length);
cs.flushfinalblock();
cs.close();
}
string str = convert.tobase64string(ms.toarray());
ms.close();
return str;
}
}
/// <summary>
/// 进行des解密。
/// </summary>
/// <param name="ptodecrypt">要解密的以base64</param>
/// <param name="skey">密钥，且必须为8位。</param>
/// <returns>已解密的字符串。</returns>
public static string desdecrypt(string ptodecrypt, string skey)
{
byte[] inputbytearray = convert.frombase64string(ptodecrypt);
using (descryptoserviceprovider des = new descryptoserviceprovider())
{
des.key = asciiencoding.ascii.getbytes(skey);
des.iv = asciiencoding.ascii.getbytes(skey);
system.io.memorystream ms = new system.io.memorystream();
using (cryptostream cs = new cryptostream(ms, des.createdecryptor(), cryptostreammode.write))
{
cs.write(inputbytearray, 0, inputbytearray.length);
cs.flushfinalblock();
cs.close();
}
string str = encoding.utf8.getstring(ms.toarray());
ms.close();
return str;
}
}
public static string md5encrypt(string text, string method)
{
string strmd5 = system.web.security.formsauthentication.hashpasswordforstoringinconfigfile(text, method);
return strmd5;
}
}
}
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