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
1 public static DateTime getNow() 2 { 3 MyFZDataContext dataContext = MyFZDataContext.getDataContext(); 4 DateTime datetime = dataContext.ExecuteQuery<DateTime>("select getdate() as datetime1").Single(); 5 return datetime; 6 7 } 8 //public static DateTime getSystemNow() { 9 // MyFZDataContext dataContext = MyFZDataContext.getDataContext(); 10 // var v1 = from t in dataContext.T1_SystemTime 11 // select new 12 // { 13 // t.SystemTime 14 // }; 15 16 // return Convert.ToDateTime(v1.Single().SystemTime); 17 //} 18 public static DateTime getMonthFirstDay(DateTime dtInter)// 本月第一天 19 { 20 DateTime dt1 = new DateTime(dtInter.Year, dtInter.Month, 1); 21 return dt1; 22 } 23 24 public static DateTime getMonthLastDay(DateTime dtInter)// 本月最后一天 25 { 26 DateTime dt1 = new DateTime(dtInter.Year, dtInter.Month, 1); 27 dt1 = dt1.AddMonths(1).AddSeconds(-1); 28 return dt1; 29 } 30 public static DateTime getNextMonthFirstDay(DateTime dtInter)// 下月第一天 31 { 32 DateTime dt1 = new DateTime(dtInter.Year, dtInter.Month, 1); 33 dt1 = dt1.AddMonths(1); 34 return dt1; 35 } 36 37 public static int getCountMonthDay(DateTime dtInter)//本月一共多少天 38 { 39 DateTime dt1 = new DateTime(dtInter.Year, dtInter.Month, 1); 40 DateTime dt2 = dt1.AddMonths(1);//下月第一天 41 return (dt2 - dt1).Days; 42 } 43 public static int getLastMonthDay(DateTime dtInter) // 从输入时间算起，还有多少天 44 { 45 DateTime dt1 = new DateTime(dtInter.Year, dtInter.Month, dtInter.Day);//今天 46 DateTime dtd = new DateTime(dtInter.Year, dtInter.Month, 1);// 本月第一天 47 DateTime dtF = dtd.AddMonths(1);// 下月第一天 48 return (dtF - dt1).Days; 49 } 50 public static int getPassMonthDay(DateTime dtInter)// 1号要现在一共多少天 51 { 52 // 经过多少天 53 DateTime dt1 = new DateTime(dtInter.Year, dtInter.Month, 1);// 54 return (dtInter - dt1).Days; 55 56 } 57 58 public static String getYearMonthString(DateTime dst) 59 { 60 String year = dst.Year.ToString(); 61 String month = dst.Month.ToString(); 62 if (month.Length == 1) { month = "0" + month; } 63 return year + month; 64 } 65 66 public static String getNextYearMonthString(DateTime dst) 67 { 68 DateTime dst1 = dst.AddMonths(1); 69 String year = dst1.Year.ToString(); 70 String month = dst1.Month.ToString(); 71 if (month.Length == 1) { month = "0" + month; } 72 return year + month; 73 } 74 public static DateTime getFirstDate(string YearMonth) 75 { 76 string year = YearMonth.Substring(0, 4); 77 string month = YearMonth.Substring(4, 2); 78 return DateTime.Parse(year + "-" + month + "-" + "01"); 79 }
２.效验
1 public void Validate_EmptyStringRule(BaseEdit control, DevExpress.XtraEditors.DXErrorProvider.DXErrorProvider dxErrorProvider1) 2 { 3 if (control.EditValue == null || control.Text.Trim().Length == 0) 4 { 5 dxErrorProvider1.SetError(control, "不能为空!",ErrorType.Default); 6 7 8 control.Focus(); 9 throw new Exception("值不能为空!"); 10 } 11 else 12 { 13 dxErrorProvider1.SetError(control, ""); 14 } 15 } 16 17 18 public void Validate_EqualRule(BaseEdit control1,BaseEdit control2, DXErrorProvider dxErrorProvider1) 19 { 20 if (!control1.EditValue.Equals(control2.EditValue)) 21 { 22 dxErrorProvider1.SetError(control1, "两次输入的密码不一样!", ErrorType.Default); 23 dxErrorProvider1.SetError(control2, "两次输入的密码不一样!", ErrorType.Default); 24 control1.Focus(); 25 throw new Exception("两次输入的密码不一样!"); 26 } 27 else 28 { 29 dxErrorProvider1.SetError(control1, ""); 30 dxErrorProvider1.SetError(control2, ""); 31 } 32 }
３.MD5
1 public class MD5Encryption 2 { 3 //申明变量 4 private static UInt32 A; 5 private static UInt32 B; 6 private static UInt32 C; 7 private static UInt32 D; 8 9 //number of bits to rotate in tranforming 10 private const int S11 = 7; 11 private const int S12 = 12; 12 private const int S13 = 17; 13 private const int S14 = 22; 14 private const int S21 = 5; 15 private const int S22 = 9; 16 private const int S23 = 14; 17 private const int S24 = 20; 18 private const int S31 = 4; 19 private const int S32 = 11; 20 private const int S33 = 16; 21 private const int S34 = 23; 22 private const int S41 = 6; 23 private const int S42 = 10; 24 private const int S43 = 15; 25 private const int S44 = 21; 26 27 28 /* F, G, H and I are basic MD5 functions. 29 * 四个非线性函数: 30 * 31 * F(X,Y,Z) =(X&Y)|((~X)&Z) 32 * G(X,Y,Z) =(X&Z)|(Y&(~Z)) 33 * H(X,Y,Z) =X^Y^Z 34 * I(X,Y,Z)=Y^(X|(~Z)) 35 * 36 * （&与，|或，~非，^异或） 37 */ 38 private static UInt32 F(UInt32 x, UInt32 y, UInt32 z) 39 { 40 return (x & y) | ((~x) & z); 41 } 42 private static UInt32 G(UInt32 x, UInt32 y, UInt32 z) 43 { 44 return (x & z) | (y & (~z)); 45 } 46 private static UInt32 H(UInt32 x, UInt32 y, UInt32 z) 47 { 48 return x ^ y ^ z; 49 } 50 private static UInt32 I(UInt32 x, UInt32 y, UInt32 z) 51 { 52 return y ^ (x | (~z)); 53 } 54 55 /* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4. 56 * Rotation is separate from addition to prevent recomputation. 57 */ 58 private static void FF(ref UInt32 a, UInt32 b, UInt32 c, UInt32 d, UInt32 mj, int s, UInt32 ti) 59 { 60 a = a + F(b, c, d) + mj + ti; 61 a = a << s | a >> (32 - s); 62 a += b; 63 } 64 private static void GG(ref UInt32 a, UInt32 b, UInt32 c, UInt32 d, UInt32 mj, int s, UInt32 ti) 65 { 66 a = a + G(b, c, d) + mj + ti; 67 a = a << s | a >> (32 - s); 68 a += b; 69 } 70 private static void HH(ref UInt32 a, UInt32 b, UInt32 c, UInt32 d, UInt32 mj, int s, UInt32 ti) 71 { 72 a = a + H(b, c, d) + mj + ti; 73 a = a << s | a >> (32 - s); 74 a += b; 75 } 76 private static void II(ref UInt32 a, UInt32 b, UInt32 c, UInt32 d, UInt32 mj, int s, UInt32 ti) 77 { 78 a = a + I(b, c, d) + mj + ti; 79 a = a << s | a >> (32 - s); 80 a += b; 81 } 82 83 private static void MD5_Init() 84 { 85 A = 0x67452301; //in memory, this is 0x01234567 86 B = 0xefcdab89; //in memory, this is 0x89abcdef 87 C = 0x98badcfe; //in memory, this is 0xfedcba98 88 D = 0x10325476; //in memory, this is 0x76543210 89 } 90 91 private static UInt32[] MD5_Append(byte[] input) 92 { 93 int zeros = 0; 94 int ones = 1; 95 int size = 0; 96 int n = input.Length; 97 int m = n % 64; 98 if (m < 56) 99 { 100 zeros = 55 - m; 101 size = n - m + 64; 102 } 103 else if (m == 56) 104 { 105 zeros = 0; 106 ones = 0; 107 size = n + 8; 108 } 109 else 110 { 111 zeros = 63 - m + 56; 112 size = n + 64 - m + 64; 113 } 114 115 ArrayList bs = new ArrayList(input); 116 if (ones == 1) 117 { 118 bs.Add((byte)0x80); // 0x80 = $10000000 119 } 120 for (int i = 0; i < zeros; i++) 121 { 122 bs.Add((byte)0); 123 } 124 125 UInt64 N = (UInt64)n * 8; 126 byte h1 = (byte)(N & 0xFF); 127 byte h2 = (byte)((N >> 8) & 0xFF); 128 byte h3 = (byte)((N >> 16) & 0xFF); 129 byte h4 = (byte)((N >> 24) & 0xFF); 130 byte h5 = (byte)((N >> 32) & 0xFF); 131 byte h6 = (byte)((N >> 40) & 0xFF); 132 byte h7 = (byte)((N >> 48) & 0xFF); 133 byte h8 = (byte)(N >> 56); 134 bs.Add(h1); 135 bs.Add(h2); 136 bs.Add(h3); 137 bs.Add(h4); 138 bs.Add(h5); 139 bs.Add(h6); 140 bs.Add(h7); 141 bs.Add(h8); 142 byte[] ts = (byte[])bs.ToArray(typeof(byte)); 143 144 /* Decodes input (byte[]) into output (UInt32[]). Assumes len is 145 * a multiple of 4. 146 */ 147 UInt32[] output = new UInt32[size / 4]; 148 for (Int64 i = 0, j = 0; i < size; j++, i += 4) 149 { 150 output[j] = (UInt32)(ts[i] | ts[i + 1] << 8 | ts[i + 2] << 16 | ts[i + 3] << 24); 151 } 152 return output; 153 } 154 private static UInt32[] MD5_Trasform(UInt32[] x) 155 { 156 157 UInt32 a, b, c, d; 158 159 for (int k = 0; k < x.Length; k += 16) 160 { 161 a = A; 162 b = B; 163 c = C; 164 d = D; 165 166 /* Round 1 */ 167 FF(ref a, b, c, d, x[k + 0], S11, 0xd76aa478); /* 1 */ 168 FF(ref d, a, b, c, x[k + 1], S12, 0xe8c7b756); /* 2 */ 169 FF(ref c, d, a, b, x[k + 2], S13, 0x242070db); /* 3 */ 170 FF(ref b, c, d, a, x[k + 3], S14, 0xc1bdceee); /* 4 */ 171 FF(ref a, b, c, d, x[k + 4], S11, 0xf57c0faf); /* 5 */ 172 FF(ref d, a, b, c, x[k + 5], S12, 0x4787c62a); /* 6 */ 173 FF(ref c, d, a, b, x[k + 6], S13, 0xa8304613); /* 7 */ 174 FF(ref b, c, d, a, x[k + 7], S14, 0xfd469501); /* 8 */ 175 FF(ref a, b, c, d, x[k + 8], S11, 0x698098d8); /* 9 */ 176 FF(ref d, a, b, c, x[k + 9], S12, 0x8b44f7af); /* 10 */ 177 FF(ref c, d, a, b, x[k + 10], S13, 0xffff5bb1); /* 11 */ 178 FF(ref b, c, d, a, x[k + 11], S14, 0x895cd7be); /* 12 */ 179 FF(ref a, b, c, d, x[k + 12], S11, 0x6b901122); /* 13 */ 180 FF(ref d, a, b, c, x[k + 13], S12, 0xfd987193); /* 14 */ 181 FF(ref c, d, a, b, x[k + 14], S13, 0xa679438e); /* 15 */ 182 FF(ref b, c, d, a, x[k + 15], S14, 0x49b40821); /* 16 */ 183 184 /* Round 2 */ 185 GG(ref a, b, c, d, x[k + 1], S21, 0xf61e2562); /* 17 */ 186 GG(ref d, a, b, c, x[k + 6], S22, 0xc040b340); /* 18 */ 187 GG(ref c, d, a, b, x[k + 11], S23, 0x265e5a51); /* 19 */ 188 GG(ref b, c, d, a, x[k + 0], S24, 0xe9b6c7aa); /* 20 */ 189 GG(ref a, b, c, d, x[k + 5], S21, 0xd62f105d); /* 21 */ 190 GG(ref d, a, b, c, x[k + 10], S22, 0x2441453); /* 22 */ 191 GG(ref c, d, a, b, x[k + 15], S23, 0xd8a1e681); /* 23 */ 192 GG(ref b, c, d, a, x[k + 4], S24, 0xe7d3fbc8); /* 24 */ 193 GG(ref a, b, c, d, x[k + 9], S21, 0x21e1cde6); /* 25 */ 194 GG(ref d, a, b, c, x[k + 14], S22, 0xc33707d6); /* 26 */ 195 GG(ref c, d, a, b, x[k + 3], S23, 0xf4d50d87); /* 27 */ 196 GG(ref b, c, d, a, x[k + 8], S24, 0x455a14ed); /* 28 */ 197 GG(ref a, b, c, d, x[k + 13], S21, 0xa9e3e905); /* 29 */ 198 GG(ref d, a, b, c, x[k + 2], S22, 0xfcefa3f8); /* 30 */ 199 GG(ref c, d, a, b, x[k + 7], S23, 0x676f02d9); /* 31 */ 200 GG(ref b, c, d, a, x[k + 12], S24, 0x8d2a4c8a); /* 32 */ 201 202 /* Round 3 */ 203 HH(ref a, b, c, d, x[k + 5], S31, 0xfffa3942); /* 33 */ 204 HH(ref d, a, b, c, x[k + 8], S32, 0x8771f681); /* 34 */ 205 HH(ref c, d, a, b, x[k + 11], S33, 0x6d9d6122); /* 35 */ 206 HH(ref b, c, d, a, x[k + 14], S34, 0xfde5380c); /* 36 */ 207 HH(ref a, b, c, d, x[k + 1], S31, 0xa4beea44); /* 37 */ 208 HH(ref d, a, b, c, x[k + 4], S32, 0x4bdecfa9); /* 38 */ 209 HH(ref c, d, a, b, x[k + 7], S33, 0xf6bb4b60); /* 39 */ 210 HH(ref b, c, d, a, x[k + 10], S34, 0xbebfbc70); /* 40 */ 211 HH(ref a, b, c, d, x[k + 13], S31, 0x289b7ec6); /* 41 */ 212 HH(ref d, a, b, c, x[k + 0], S32, 0xeaa127fa); /* 42 */ 213 HH(ref c, d, a, b, x[k + 3], S33, 0xd4ef3085); /* 43 */ 214 HH(ref b, c, d, a, x[k + 6], S34, 0x4881d05); /* 44 */ 215 HH(ref a, b, c, d, x[k + 9], S31, 0xd9d4d039); /* 45 */ 216 HH(ref d, a, b, c, x[k + 12], S32, 0xe6db99e5); /* 46 */ 217 HH(ref c, d, a, b, x[k + 15], S33, 0x1fa27cf8); /* 47 */ 218 HH(ref b, c, d, a, x[k + 2], S34, 0xc4ac5665); /* 48 */ 219 220 /* Round 4 */ 221 II(ref a, b, c, d, x[k + 0], S41, 0xf4292244); /* 49 */ 222 II(ref d, a, b, c, x[k + 7], S42, 0x432aff97); /* 50 */ 223 II(ref c, d, a, b, x[k + 14], S43, 0xab9423a7); /* 51 */ 224 II(ref b, c, d, a, x[k + 5], S44, 0xfc93a039); /* 52 */ 225 II(ref a, b, c, d, x[k + 12], S41, 0x655b59c3); /* 53 */ 226 II(ref d, a, b, c, x[k + 3], S42, 0x8f0ccc92); /* 54 */ 227 II(ref c, d, a, b, x[k + 10], S43, 0xffeff47d); /* 55 */ 228 II(ref b, c, d, a, x[k + 1], S44, 0x85845dd1); /* 56 */ 229 II(ref a, b, c, d, x[k + 8], S41, 0x6fa87e4f); /* 57 */ 230 II(ref d, a, b, c, x[k + 15], S42, 0xfe2ce6e0); /* 58 */ 231 II(ref c, d, a, b, x[k + 6], S43, 0xa3014314); /* 59 */ 232 II(ref b, c, d, a, x[k + 13], S44, 0x4e0811a1); /* 60 */ 233 II(ref a, b, c, d, x[k + 4], S41, 0xf7537e82); /* 61 */ 234 II(ref d, a, b, c, x[k + 11], S42, 0xbd3af235); /* 62 */ 235 II(ref c, d, a, b, x[k + 2], S43, 0x2ad7d2bb); /* 63 */ 236 II(ref b, c, d, a, x[k + 9], S44, 0xeb86d391); /* 64 */ 237 238 A += a; 239 B += b; 240 C += c; 241 D += d; 242 } 243 return new UInt32[] { A, B, C, D }; 244 } 245 public static byte[] MD5Array(byte[] input) 246 { 247 MD5_Init(); 248 UInt32[] block = MD5_Append(input); 249 UInt32[] bits = MD5_Trasform(block); 250 251 /* Encodes bits (UInt32[]) into output (byte[]). Assumes len is 252 * a multiple of 4. 253 */ 254 byte[] output = new byte[bits.Length * 4]; 255 for (int i = 0, j = 0; i < bits.Length; i++, j += 4) 256 { 257 output[j] = (byte)(bits[i] & 0xff); 258 output[j + 1] = (byte)((bits[i] >> 8) & 0xff); 259 output[j + 2] = (byte)((bits[i] >> 16) & 0xff); 260 output[j + 3] = (byte)((bits[i] >> 24) & 0xff); 261 } 262 return output; 263 } 264 265 public static string ArrayToHexString(byte[] array, bool uppercase) 266 { 267 string hexString = ""; 268 string format = "x2"; 269 if (uppercase) 270 { 271 format = "X2"; 272 } 273 foreach (byte b in array) 274 { 275 hexString += b.ToString(format); 276 } 277 return hexString; 278 } 279 280 public static string MDString(string message) 281 { 282 char[] c = message.ToCharArray(); 283 byte[] b = new byte[c.Length]; 284 for (int i = 0; i < c.Length; i++) 285 { 286 b[i] = (byte)c[i]; 287 } 288 byte[] digest = MD5Array(b); 289 return ArrayToHexString(digest, false); 290 } 291 public static string MDFile(string fileName) 292 { 293 FileStream fs = File.Open(fileName, FileMode.Open, FileAccess.Read); 294 byte[] array = new byte[fs.Length]; 295 fs.Read(array, 0, (int)fs.Length); 296 byte[] digest = MD5Array(array); 297 fs.Close(); 298 return ArrayToHexString(digest, false); 299 } 300 301 public static string Test(string message) 302 { 303 return "rnMD5 (" + message + ") = " + MD5Encryption.MDString(message); 304 } 305 public static string TestSuite() 306 { 307 string s = ""; 308 s += Test(""); 309 s += Test("a"); 310 s += Test("abc"); 311 s += Test("message digest"); 312 s += Test("abcdefghijklmnopqrstuvwxyz"); 313 s += Test("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"); 314 s += Test("12345678901234567890123456789012345678901234567890123456789012345678901234567890"); 315 return s; 316 } 317 } 318 }
4.xml
1 public void Serialize(Setting setting) 2 { 3 using (FileStream fs = new FileStream(strFile, FileMode.Create)) 4 { 5 XmlSerializer formatter = new XmlSerializer(typeof(Setting)); 6 formatter.Serialize(fs, setting); 7 } 8 } 9 10 public Setting DeSerialize() 11 { 12 13 14 Setting setting; 15 using (FileStream fs = new FileStream(strFile, FileMode.Open)) 16 { 17 XmlSerializer formatter = new XmlSerializer(typeof(Setting)); 18 setting = (Setting)formatter.Deserialize(fs); 19 } 20 return setting; 21 } 22 }
