房租管理小软件（六）：通用功能包括时间，效验，MD5加密，XML 操作
1.时间相关
public static DateTime getNow()
{
MyFZDataContext dataContext = MyFZDataContext.getDataContext();
DateTime datetime = dataContext.ExecuteQuery<DateTime>("select getdate() as datetime1").Single();
return datetime; }
//public static DateTime getSystemNow() {
// MyFZDataContext dataContext = MyFZDataContext.getDataContext();
// var v1 = from t in dataContext.T1_SystemTime
// select new
// {
// t.SystemTime
// }; // return Convert.ToDateTime(v1.Single().SystemTime);
//}
public static DateTime getMonthFirstDay(DateTime dtInter)// 本月第一天
{
DateTime dt1 = new DateTime(dtInter.Year, dtInter.Month, );
return dt1;
} public static DateTime getMonthLastDay(DateTime dtInter)// 本月最后一天
{
DateTime dt1 = new DateTime(dtInter.Year, dtInter.Month, );
dt1 = dt1.AddMonths().AddSeconds(-);
return dt1;
}
public static DateTime getNextMonthFirstDay(DateTime dtInter)// 下月第一天
{
DateTime dt1 = new DateTime(dtInter.Year, dtInter.Month, );
dt1 = dt1.AddMonths();
return dt1;
} public static int getCountMonthDay(DateTime dtInter)//本月一共多少天
{
DateTime dt1 = new DateTime(dtInter.Year, dtInter.Month, );
DateTime dt2 = dt1.AddMonths();//下月第一天
return (dt2 - dt1).Days;
}
public static int getLastMonthDay(DateTime dtInter) // 从输入时间算起，还有多少天
{
DateTime dt1 = new DateTime(dtInter.Year, dtInter.Month, dtInter.Day);//今天
DateTime dtd = new DateTime(dtInter.Year, dtInter.Month, );// 本月第一天
DateTime dtF = dtd.AddMonths();// 下月第一天
return (dtF - dt1).Days;
}
public static int getPassMonthDay(DateTime dtInter)// 1号要现在一共多少天
{
// 经过多少天
DateTime dt1 = new DateTime(dtInter.Year, dtInter.Month, );//
return (dtInter - dt1).Days; } public static String getYearMonthString(DateTime dst)
{
String year = dst.Year.ToString();
String month = dst.Month.ToString();
if (month.Length == ) { month = "" + month; }
return year + month;
} public static String getNextYearMonthString(DateTime dst)
{
DateTime dst1 = dst.AddMonths();
String year = dst1.Year.ToString();
String month = dst1.Month.ToString();
if (month.Length == ) { month = "" + month; }
return year + month;
}
public static DateTime getFirstDate(string YearMonth)
{
string year = YearMonth.Substring(, );
string month = YearMonth.Substring(, );
return DateTime.Parse(year + "-" + month + "-" + "");
}
２.效验
public void Validate_EmptyStringRule(BaseEdit control, DevExpress.XtraEditors.DXErrorProvider.DXErrorProvider dxErrorProvider1)
{
if (control.EditValue == null || control.Text.Trim().Length == )
{
dxErrorProvider1.SetError(control, "不能为空!",ErrorType.Default); control.Focus();
throw new Exception("值不能为空!");
}
else
{
dxErrorProvider1.SetError(control, "");
}
} public void Validate_EqualRule(BaseEdit control1,BaseEdit control2, DXErrorProvider dxErrorProvider1)
{
if (!control1.EditValue.Equals(control2.EditValue))
{
dxErrorProvider1.SetError(control1, "两次输入的密码不一样!", ErrorType.Default);
dxErrorProvider1.SetError(control2, "两次输入的密码不一样!", ErrorType.Default);
control1.Focus();
throw new Exception("两次输入的密码不一样!");
}
else
{
dxErrorProvider1.SetError(control1, "");
dxErrorProvider1.SetError(control2, "");
}
}
３.MD5
public class MD5Encryption
{
//申明变量
private static UInt32 A;
private static UInt32 B;
private static UInt32 C;
private static UInt32 D; //number of bits to rotate in tranforming
private const int S11 = ;
private const int S12 = ;
private const int S13 = ;
private const int S14 = ;
private const int S21 = ;
private const int S22 = ;
private const int S23 = ;
private const int S24 = ;
private const int S31 = ;
private const int S32 = ;
private const int S33 = ;
private const int S34 = ;
private const int S41 = ;
private const int S42 = ;
private const int S43 = ;
private const int S44 = ; /* F, G, H and I are basic MD5 functions.
* 四个非线性函数:
*
* F(X,Y,Z) =(X&Y)|((~X)&Z)
* G(X,Y,Z) =(X&Z)|(Y&(~Z))
* H(X,Y,Z) =X^Y^Z
* I(X,Y,Z)=Y^(X|(~Z))
*
* （&与，|或，~非，^异或）
*/
private static UInt32 F(UInt32 x, UInt32 y, UInt32 z)
{
return (x & y) | ((~x) & z);
}
private static UInt32 G(UInt32 x, UInt32 y, UInt32 z)
{
return (x & z) | (y & (~z));
}
private static UInt32 H(UInt32 x, UInt32 y, UInt32 z)
{
return x ^ y ^ z;
}
private static UInt32 I(UInt32 x, UInt32 y, UInt32 z)
{
return y ^ (x | (~z));
} /* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
* Rotation is separate from addition to prevent recomputation.
*/
private static void FF(ref UInt32 a, UInt32 b, UInt32 c, UInt32 d, UInt32 mj, int s, UInt32 ti)
{
a = a + F(b, c, d) + mj + ti;
a = a << s | a >> ( - s);
a += b;
}
private static void GG(ref UInt32 a, UInt32 b, UInt32 c, UInt32 d, UInt32 mj, int s, UInt32 ti)
{
a = a + G(b, c, d) + mj + ti;
a = a << s | a >> ( - s);
a += b;
}
private static void HH(ref UInt32 a, UInt32 b, UInt32 c, UInt32 d, UInt32 mj, int s, UInt32 ti)
{
a = a + H(b, c, d) + mj + ti;
a = a << s | a >> ( - s);
a += b;
}
private static void II(ref UInt32 a, UInt32 b, UInt32 c, UInt32 d, UInt32 mj, int s, UInt32 ti)
{
a = a + I(b, c, d) + mj + ti;
a = a << s | a >> ( - s);
a += b;
} private static void MD5_Init()
{
A = 0x67452301; //in memory, this is 0x01234567
B = 0xefcdab89; //in memory, this is 0x89abcdef
C = 0x98badcfe; //in memory, this is 0xfedcba98
D = 0x10325476; //in memory, this is 0x76543210
} private static UInt32[] MD5_Append(byte[] input)
{
int zeros = ;
int ones = ;
int size = ;
int n = input.Length;
int m = n % ;
if (m < )
{
zeros = - m;
size = n - m + ;
}
else if (m == )
{
zeros = ;
ones = ;
size = n + ;
}
else
{
zeros = - m + ;
size = n + - m + ;
} ArrayList bs = new ArrayList(input);
if (ones == )
{
bs.Add((byte)0x80); // 0x80 = $10000000
}
for (int i = ; i < zeros; i++)
{
bs.Add((byte));
} UInt64 N = (UInt64)n * ;
byte h1 = (byte)(N & 0xFF);
byte h2 = (byte)((N >> ) & 0xFF);
byte h3 = (byte)((N >> ) & 0xFF);
byte h4 = (byte)((N >> ) & 0xFF);
byte h5 = (byte)((N >> ) & 0xFF);
byte h6 = (byte)((N >> ) & 0xFF);
byte h7 = (byte)((N >> ) & 0xFF);
byte h8 = (byte)(N >> );
bs.Add(h1);
bs.Add(h2);
bs.Add(h3);
bs.Add(h4);
bs.Add(h5);
bs.Add(h6);
bs.Add(h7);
bs.Add(h8);
byte[] ts = (byte[])bs.ToArray(typeof(byte)); /* Decodes input (byte[]) into output (UInt32[]). Assumes len is
* a multiple of 4.
*/
UInt32[] output = new UInt32[size / ];
for (Int64 i = , j = ; i < size; j++, i += )
{
output[j] = (UInt32)(ts[i] | ts[i + ] << | ts[i + ] << | ts[i + ] << );
}
return output;
}
private static UInt32[] MD5_Trasform(UInt32[] x)
{ UInt32 a, b, c, d; for (int k = ; k < x.Length; k += )
{
a = A;
b = B;
c = C;
d = D; /* Round 1 */
FF(ref a, b, c, d, x[k + ], S11, 0xd76aa478); /* 1 */
FF(ref d, a, b, c, x[k + ], S12, 0xe8c7b756); /* 2 */
FF(ref c, d, a, b, x[k + ], S13, 0x242070db); /* 3 */
FF(ref b, c, d, a, x[k + ], S14, 0xc1bdceee); /* 4 */
FF(ref a, b, c, d, x[k + ], S11, 0xf57c0faf); /* 5 */
FF(ref d, a, b, c, x[k + ], S12, 0x4787c62a); /* 6 */
FF(ref c, d, a, b, x[k + ], S13, 0xa8304613); /* 7 */
FF(ref b, c, d, a, x[k + ], S14, 0xfd469501); /* 8 */
FF(ref a, b, c, d, x[k + ], S11, 0x698098d8); /* 9 */
FF(ref d, a, b, c, x[k + ], S12, 0x8b44f7af); /* 10 */
FF(ref c, d, a, b, x[k + ], S13, 0xffff5bb1); /* 11 */
FF(ref b, c, d, a, x[k + ], S14, 0x895cd7be); /* 12 */
FF(ref a, b, c, d, x[k + ], S11, 0x6b901122); /* 13 */
FF(ref d, a, b, c, x[k + ], S12, 0xfd987193); /* 14 */
FF(ref c, d, a, b, x[k + ], S13, 0xa679438e); /* 15 */
FF(ref b, c, d, a, x[k + ], S14, 0x49b40821); /* 16 */ /* Round 2 */
GG(ref a, b, c, d, x[k + ], S21, 0xf61e2562); /* 17 */
GG(ref d, a, b, c, x[k + ], S22, 0xc040b340); /* 18 */
GG(ref c, d, a, b, x[k + ], S23, 0x265e5a51); /* 19 */
GG(ref b, c, d, a, x[k + ], S24, 0xe9b6c7aa); /* 20 */
GG(ref a, b, c, d, x[k + ], S21, 0xd62f105d); /* 21 */
GG(ref d, a, b, c, x[k + ], S22, 0x2441453); /* 22 */
GG(ref c, d, a, b, x[k + ], S23, 0xd8a1e681); /* 23 */
GG(ref b, c, d, a, x[k + ], S24, 0xe7d3fbc8); /* 24 */
GG(ref a, b, c, d, x[k + ], S21, 0x21e1cde6); /* 25 */
GG(ref d, a, b, c, x[k + ], S22, 0xc33707d6); /* 26 */
GG(ref c, d, a, b, x[k + ], S23, 0xf4d50d87); /* 27 */
GG(ref b, c, d, a, x[k + ], S24, 0x455a14ed); /* 28 */
GG(ref a, b, c, d, x[k + ], S21, 0xa9e3e905); /* 29 */
GG(ref d, a, b, c, x[k + ], S22, 0xfcefa3f8); /* 30 */
GG(ref c, d, a, b, x[k + ], S23, 0x676f02d9); /* 31 */
GG(ref b, c, d, a, x[k + ], S24, 0x8d2a4c8a); /* 32 */ /* Round 3 */
HH(ref a, b, c, d, x[k + ], S31, 0xfffa3942); /* 33 */
HH(ref d, a, b, c, x[k + ], S32, 0x8771f681); /* 34 */
HH(ref c, d, a, b, x[k + ], S33, 0x6d9d6122); /* 35 */
HH(ref b, c, d, a, x[k + ], S34, 0xfde5380c); /* 36 */
HH(ref a, b, c, d, x[k + ], S31, 0xa4beea44); /* 37 */
HH(ref d, a, b, c, x[k + ], S32, 0x4bdecfa9); /* 38 */
HH(ref c, d, a, b, x[k + ], S33, 0xf6bb4b60); /* 39 */
HH(ref b, c, d, a, x[k + ], S34, 0xbebfbc70); /* 40 */
HH(ref a, b, c, d, x[k + ], S31, 0x289b7ec6); /* 41 */
HH(ref d, a, b, c, x[k + ], S32, 0xeaa127fa); /* 42 */
HH(ref c, d, a, b, x[k + ], S33, 0xd4ef3085); /* 43 */
HH(ref b, c, d, a, x[k + ], S34, 0x4881d05); /* 44 */
HH(ref a, b, c, d, x[k + ], S31, 0xd9d4d039); /* 45 */
HH(ref d, a, b, c, x[k + ], S32, 0xe6db99e5); /* 46 */
HH(ref c, d, a, b, x[k + ], S33, 0x1fa27cf8); /* 47 */
HH(ref b, c, d, a, x[k + ], S34, 0xc4ac5665); /* 48 */ /* Round 4 */
II(ref a, b, c, d, x[k + ], S41, 0xf4292244); /* 49 */
II(ref d, a, b, c, x[k + ], S42, 0x432aff97); /* 50 */
II(ref c, d, a, b, x[k + ], S43, 0xab9423a7); /* 51 */
II(ref b, c, d, a, x[k + ], S44, 0xfc93a039); /* 52 */
II(ref a, b, c, d, x[k + ], S41, 0x655b59c3); /* 53 */
II(ref d, a, b, c, x[k + ], S42, 0x8f0ccc92); /* 54 */
II(ref c, d, a, b, x[k + ], S43, 0xffeff47d); /* 55 */
II(ref b, c, d, a, x[k + ], S44, 0x85845dd1); /* 56 */
II(ref a, b, c, d, x[k + ], S41, 0x6fa87e4f); /* 57 */
II(ref d, a, b, c, x[k + ], S42, 0xfe2ce6e0); /* 58 */
II(ref c, d, a, b, x[k + ], S43, 0xa3014314); /* 59 */
II(ref b, c, d, a, x[k + ], S44, 0x4e0811a1); /* 60 */
II(ref a, b, c, d, x[k + ], S41, 0xf7537e82); /* 61 */
II(ref d, a, b, c, x[k + ], S42, 0xbd3af235); /* 62 */
II(ref c, d, a, b, x[k + ], S43, 0x2ad7d2bb); /* 63 */
II(ref b, c, d, a, x[k + ], S44, 0xeb86d391); /* 64 */ A += a;
B += b;
C += c;
D += d;
}
return new UInt32[] { A, B, C, D };
}
public static byte[] MD5Array(byte[] input)
{
MD5_Init();
UInt32[] block = MD5_Append(input);
UInt32[] bits = MD5_Trasform(block); /* Encodes bits (UInt32[]) into output (byte[]). Assumes len is
* a multiple of 4.
*/
byte[] output = new byte[bits.Length * ];
for (int i = , j = ; i < bits.Length; i++, j += )
{
output[j] = (byte)(bits[i] & 0xff);
output[j + ] = (byte)((bits[i] >> ) & 0xff);
output[j + ] = (byte)((bits[i] >> ) & 0xff);
output[j + ] = (byte)((bits[i] >> ) & 0xff);
}
return output;
} public static string ArrayToHexString(byte[] array, bool uppercase)
{
string hexString = "";
string format = "x2";
if (uppercase)
{
format = "X2";
}
foreach (byte b in array)
{
hexString += b.ToString(format);
}
return hexString;
} public static string MDString(string message)
{
char[] c = message.ToCharArray();
byte[] b = new byte[c.Length];
for (int i = ; i < c.Length; i++)
{
b[i] = (byte)c[i];
}
byte[] digest = MD5Array(b);
return ArrayToHexString(digest, false);
}
public static string MDFile(string fileName)
{
FileStream fs = File.Open(fileName, FileMode.Open, FileAccess.Read);
byte[] array = new byte[fs.Length];
fs.Read(array, , (int)fs.Length);
byte[] digest = MD5Array(array);
fs.Close();
return ArrayToHexString(digest, false);
} public static string Test(string message)
{
return "rnMD5 (" + message + ") = " + MD5Encryption.MDString(message);
}
public static string TestSuite()
{
string s = "";
s += Test("");
s += Test("a");
s += Test("abc");
s += Test("message digest");
s += Test("abcdefghijklmnopqrstuvwxyz");
s += Test("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789");
s += Test("");
return s;
}
}
}
4.xml
public void Serialize(Setting setting)
{
using (FileStream fs = new FileStream(strFile, FileMode.Create))
{
XmlSerializer formatter = new XmlSerializer(typeof(Setting));
formatter.Serialize(fs, setting);
}
} public Setting DeSerialize()
{ Setting setting;
using (FileStream fs = new FileStream(strFile, FileMode.Open))
{
XmlSerializer formatter = new XmlSerializer(typeof(Setting));
setting = (Setting)formatter.Deserialize(fs);
}
return setting;
}
}
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