1 ///2 /// 数据库通用操作类 3 /// 4 public abstract class DbHelper 5 { 6 #region " 连接字符串 " 7 //连接字符串 8 //public static string ConnString = ConfigurationManager.ConnectionStrings["CommonSqlConnectionString"].ConnectionString; 9 public static string DefaultConnString = string.Empty; 10 public const int defaultCommandTimeout = 180; 11 public const int defaultdbconfig = 1; 12 13 #endregion 14 15 #region " GetSqlCommand " 16 17 /// 18 /// 获取初始化好的Command对象 19 /// 20 /// Connection对象 21 /// 命令文本 22 /// 命令类型 23 /// 参数列表 24 /// 初始化好的Command对象 25 private static SqlCommand GetSqlCommand(SqlConnection conn, string cmdText, CommandType cmdType, SqlParameter[] parameters) 26 { 27 SqlCommand cmd = new SqlCommand(cmdText, conn); 28 cmd.CommandType = cmdType; 29 cmd.CommandTimeout = defaultCommandTimeout; 30 if (parameters != null) 31 { 32 cmd.Parameters.AddRange(parameters); 33 } 34 35 return cmd; 36 } 37 38 #endregion 39 40 #region " ExecSqlDataSet " 41 42 public static DataTable ExecSqlDataSet(string strSQL) 43 { 44 return ExecSqlDataSet(strSQL, null); 45 } 46 47 public static DataTable ExecSqlDataSet(string strSQL, SqlParameter[] parameters) 48 { 49 return ExecSqlDataSet(strSQL, parameters, DefaultConnString); 50 } 51 52 public static DataTable ExecSqlDataSet(string strSQL, SqlParameter[] parameters, string connStr) 53 { 54 if (string.IsNullOrWhiteSpace(connStr)) 55 { 56 return new DataTable(); 57 } 58 using (SqlConnection conn = new SqlConnection(connStr)) 59 { 60 conn.Open(); 61 SqlCommand cmd = GetSqlCommand(conn, strSQL, CommandType.Text, parameters); 62 SqlDataAdapter da = new SqlDataAdapter(cmd); 63 DataSet ds = new DataSet(); 64 da.Fill(ds); 65 cmd.Dispose(); 66 da.Dispose(); 67 return ds.Tables[0]; 68 } 69 } 70 71 72 73 #endregion 74 75 #region " ExecSqlNonQuerry " 76 77 /// 78 /// 执行非查询SQL语句 79 /// 80 /// 待执行SQL语句 81 /// 受影响的行数 82 public static int ExecSqlNonQuerry(string strSQL) 83 { 84 return ExecSqlNonQuerry(strSQL, null); 85 } 86 87 /// 88 /// 执行非查询的带参数的SQL语句 89 /// 90 /// 待执行SQL语句 91 /// 受影响的行数 92 public static int ExecSqlNonQuerry(string strSQL, SqlParameter[] parameters) 93 { 94 return ExecSqlNonQuerry(strSQL, parameters, DefaultConnString); 95 } 96 97 98 99 public static int ExecSqlNonQuerry(string strSQL, SqlParameter[] parameters, string connStr) 100 { 101 using (SqlConnection conn = new SqlConnection(connStr)) 102 { 103 conn.Open(); 104 SqlCommand cmd = GetSqlCommand(conn, strSQL, CommandType.Text, parameters); 105 cmd.CommandTimeout = 0; 106 int result = cmd.ExecuteNonQuery(); 107 cmd.Dispose(); 108 return result; 109 } 110 } 111 112 #endregion 113 114 #region " ExecSqlScalar " 115 116 /// 117 /// 执行统计查询 118 /// 119 /// 待执行SQL语句 120 /// 执行结果的第1行第1列的值 121 public static object ExecSqlScalar(string strSQL) 122 { 123 return ExecSqlScalar(strSQL, null); 124 } 125 126 /// 127 /// 执行带参数的统计查询 128 /// 129 /// 待执行SQL语句 130 /// 参数数组 131 /// 执行结果的第1行第1列的值 132 public static object ExecSqlScalar(string strSQL, SqlParameter[] parameters) 133 { 134 return ExecSqlScalar(strSQL, parameters, DefaultConnString); 135 } 136 137 /// 138 /// 执行带参数的统计查询 139 /// 140 /// 待执行SQL语句 141 /// 参数数组 142 /// 执行结果的第1行第1列的值 143 public static object ExecSqlScalar(string strSQL, SqlParameter[] parameters, string connStr) 144 { 145 using (SqlConnection conn = new SqlConnection(connStr)) 146 { 147 conn.Open(); 148 SqlCommand cmd = GetSqlCommand(conn, strSQL, CommandType.Text, parameters); 149 object result = cmd.ExecuteScalar(); 150 cmd.Dispose(); 151 return result; 152 } 153 } 154 155 #endregion 156 157 #region " ExecProcDataSet " 158 159 /// 160 /// 执行存储过程，返回执行结果 161 /// 162 /// 待执行存储过程 163 /// 查询结果 164 public static DataSet ExecProcDataSet(string procName) 165 { 166 return ExecProcDataSet(procName, null); 167 } 168 /// 169 /// 执行带参数的存储过程，返回执行结果 170 /// 171 /// 待执行存储过程 172 /// 参数数组 173 /// 查询结果 174 public static DataSet ExecProcDataSet(string procName, SqlParameter[] parameters) 175 { 176 return ExecProcDataSet(procName, parameters, DefaultConnString); 177 } 178 179 /// 180 /// 执行带参数的存储过程，返回执行结果 181 /// 182 /// 待执行存储过程 183 /// 参数数组 184 /// 查询结果 185 public static DataSet ExecProcDataSet(string procName, SqlParameter[] parameters, string connStr) 186 { 187 using (SqlConnection conn = new SqlConnection(connStr)) 188 { 189 conn.Open(); 190 SqlCommand cmd = GetSqlCommand(conn, procName, CommandType.StoredProcedure, parameters); 191 cmd.CommandTimeout = 0; 192 SqlDataAdapter da = new SqlDataAdapter(cmd); 193 DataSet ds = new DataSet(); 194 da.Fill(ds); 195 cmd.Dispose(); 196 return ds; 197 } 198 } 199 200 201 #endregion 202 203 #region " ExecProcDataTable " 204 205 /// 206 /// 执行存储过程，返回执行结果 207 /// 208 /// 待执行存储过程 209 /// 查询结果 210 public static DataTable ExecProcDataTable(string procName) 211 { 212 return ExecProcDataSet(procName).Tables[0]; 213 } 214 /// 215 /// 执行带参数的存储过程，返回执行结果 216 /// 217 /// 待执行存储过程 218 /// 参数数组 219 /// 查询结果 220 public static DataTable ExecProcDataTable(string procName, SqlParameter[] parameters) 221 { 222 return ExecProcDataSet(procName, parameters).Tables[0]; 223 } 224 225 public static DataTable ExecProcDataTable(string procName, SqlParameter[] parameters, string connStr) 226 { 227 return ExecProcDataSet(procName, parameters, connStr).Tables[0]; 228 } 229 230 231 #endregion 232 233 #region " ExecProcNonQuerry " 234 235 /// 236 /// 执行非查询存储过程 237 /// 238 /// 待执行存储过程 239 /// 受影响的行数 240 public static int ExecProcNonQuerry(string procName) 241 { 242 return ExecProcNonQuerry(procName); 243 } 244 245 /// 246 /// 执行非查询的带参数的存储过程 247 /// 248 /// 待执行存储过程 249 /// 受影响的行数 250 public static int ExecProcNonQuerry(string procName, SqlParameter[] parameters) 251 { 252 return ExecProcNonQuerry(procName, parameters, DefaultConnString); 253 } 254 255 256 /// 257 /// 执行非查询的带参数的存储过程 258 /// 259 /// 待执行存储过程 260 /// 受影响的行数 261 public static int ExecProcNonQuerry(string procName, SqlParameter[] parameters, string connStr) 262 { 263 using (SqlConnection conn = new SqlConnection(connStr)) 264 { 265 conn.Open(); 266 SqlCommand cmd = GetSqlCommand(conn, procName, CommandType.StoredProcedure, parameters); 267 int result = cmd.ExecuteNonQuery(); 268 cmd.Dispose(); 269 return result; 270 } 271 } 272 273 274 275 #endregion 276 277 #region " ExecSqlDataReader " 278 279 /// 280 /// 执行SQL语句，返回执行结果 281 /// 282 /// 待执行SQL语句 283 /// 查询结果 284 public static SqlDataReader ExecSqlDataReader(string strSQL) 285 { 286 return ExecSqlDataReader(strSQL, null); 287 } 288 289 /// 290 /// 执行带参数的SQL语句，返回执行结果 291 /// 292 /// 待执行SQL语句 293 /// 参数数组 294 /// 查询结果 295 public static SqlDataReader ExecSqlDataReader(string strSQL, SqlParameter[] parameters) 296 { 297 return ExecSqlDataReader(strSQL, parameters, DefaultConnString); 298 } 299 300 /// 301 /// 执行带参数的SQL语句，返回执行结果 302 /// 303 /// 待执行SQL语句 304 /// 参数数组 305 /// 查询结果 306 public static SqlDataReader ExecSqlDataReader(string strSQL, SqlParameter[] parameters, string connStr) 307 { 308 using (SqlConnection conn = new SqlConnection(connStr)) 309 { 310 conn.Open(); 311 SqlCommand cmd = GetSqlCommand(conn, strSQL, CommandType.Text, parameters); 312 SqlDataReader result = cmd.ExecuteReader(CommandBehavior.CloseConnection); 313 cmd.Dispose(); 314 return result; 315 } 316 } 317 318 319 #endregion 320 321 #region " ExecProcDataReader " 322 323 /// 324 /// 执行存储过程，返回执行结果 325 /// 326 /// 待执行存储过程 327 /// 查询结果 328 public static SqlDataReader ExecProcDataReader(string procName) 329 { 330 return ExecProcDataReader(procName, null); 331 } 332 333 /// 334 /// 执行带参数的存储过程，返回执行结果 335 /// 336 /// 待执行存储过程 337 /// 参数数组 338 /// 查询结果 339 public static SqlDataReader ExecProcDataReader(string procName, SqlParameter[] parameters) 340 { 341 return ExecProcDataReader(procName, parameters, DefaultConnString); 342 } 343 344 /// 345 /// 执行带参数的存储过程，返回执行结果 346 /// 347 /// 待执行存储过程 348 /// 参数数组 349 /// 查询结果 350 public static SqlDataReader ExecProcDataReader(string procName, SqlParameter[] parameters, string connStr) 351 { 352 using (SqlConnection conn = new SqlConnection(connStr)) 353 { 354 conn.Open(); 355 356 SqlCommand cmd = GetSqlCommand(conn, procName, CommandType.StoredProcedure, parameters); 357 SqlDataReader result = cmd.ExecuteReader(CommandBehavior.CloseConnection); 358 cmd.Dispose(); 359 return result; 360 } 361 } 362 363 364 365 #endregion 366 367 #region " DtToSqlServer " 368 369 /// 370 /// 将DataTable批量导入SqlServer 371 /// 372 /// 数据表 373 /// 目标数据表名 374 /// 对应列的数据集 375 public static void DtToSqlServer(DataTable dtExcel, string tableName, DataTable dtColName) 376 { 377 DtToSqlServer(dtExcel, tableName, dtColName, DefaultConnString); 378 } 379 380 /// 381 /// 将DataTable批量导入SqlServer 382 /// 383 /// 数据表 384 /// 目标数据表名 385 /// 对应列的数据集 386 public static void DtToSqlServer(DataTable dtExcel, string tableName, DataTable dtColName, string connStr) 387 { 388 using (SqlConnection conn = new SqlConnection(connStr)) 389 { 390 conn.Open(); 391 392 using (SqlBulkCopy bulkCopy = new SqlBulkCopy(conn)) 393 { 394 try 395 { 396 bulkCopy.DestinationTableName = tableName;//要插入的表的表名 397 for (int i = 0; i < dtColName.Rows.Count; i++) 398 { 399 bulkCopy.ColumnMappings.Add(dtColName.Rows[i][0].ToString().Trim(), dtColName.Rows[i][1].ToString().Trim()); 400 401 } 402 403 bulkCopy.WriteToServer(dtExcel); 404 } 405 catch (Exception ex) 406 { 407 Console.WriteLine(ex.Message); 408 } 409 } 410 } 411 } 412 413 #endregion 414 415 #region 416 /// 417 /// 418 /// 419 /// 目标连接字符 420 /// 目标表 421 /// 源数据 422 public static string SqlBulkCopyByDatatable(string tablename, DataTable table, string connStr, SqlConnection m_clsSqlConn) 423 { 424 string dataBaseStr = ""; 425 if (tablename.Contains(".")) 426 { 427 dataBaseStr = tablename.Substring(0, tablename.LastIndexOf(".") + 1); 428 tablename = tablename.Substring(tablename.LastIndexOf(".") + 1); 429 } 430 431 try 432 { 433 string result = ""; 434 SqlBulkCopy sqlBulkCopy = null; 435 if (m_clsSqlConn != null) 436 { 437 sqlBulkCopy = new SqlBulkCopy(m_clsSqlConn); 438 if (m_clsSqlConn.State == ConnectionState.Closed) 439 { 440 m_clsSqlConn.Open(); 441 } 442 } 443 else 444 { 445 sqlBulkCopy = new SqlBulkCopy(connStr); 446 } 447 448 449 450 sqlBulkCopy.DestinationTableName = dataBaseStr + ((tablename.IndexOf("[") > -1 && tablename.IndexOf("]") > -1) ? tablename : "[" + tablename + "]"); 451 sqlBulkCopy.BulkCopyTimeout = 500; 452 //sqlBulkCopy.BatchSize = 800; 453 454 for (int i = 0; i < table.Columns.Count; i++) 455 { 456 sqlBulkCopy.ColumnMappings.Add(table.Columns[i].ColumnName, table.Columns[i].ColumnName); 457 } 458 459 if (table.Rows.Count > 0) 460 { 461 sqlBulkCopy.WriteToServer(table); 462 } 463 else 464 { 465 result = "表为空"; 466 } 467 468 sqlBulkCopy.Close(); 469 return result; 470 } 471 catch (Exception e) 472 { 473 return e.Message; 474 } 475 finally 476 { 477 try 478 { 479 if (m_clsSqlConn != null) 480 { 481 482 try 483 { 484 if (m_clsSqlConn.State == ConnectionState.Open) 485 { 486 m_clsSqlConn.Close(); 487 } 488 } 489 catch (Exception) 490 { 491 492 } 493 } 494 } 495 catch (Exception) 496 { 497 498 } 499 } 500 } 501 502 public static string SqlBulkCopyByDatatable(string tablename, DataTable table, SqlConnection m_clsSqlConn) 503 { 504 return SqlBulkCopyByDatatable(tablename, table, string.Empty, m_clsSqlConn); 505 506 } 507 public static string SqlBulkCopyByDatatable(string tablename, DataTable table, string connStr) 508 { 509 return SqlBulkCopyByDatatable(tablename, table, connStr, null); 510 } 511 512 public static string SqlBulkCopyByDatatable(string tablename, DataTable table) 513 { 514 return SqlBulkCopyByDatatable(tablename, table, DefaultConnString, null); 515 } 516 517 public static string CreateTempTable(string tablename, DataTable table, string connStr) 518 { 519 return CreateTempTable(tablename, table, new SqlConnection(connStr)); 520 } 521 public static string CreateTempTable(string tablename, DataTable table, SqlConnection connStr) 522 { 523 try 524 { 525 526 string sqlstr = "CREATE TABLE [" + tablename + "]("; 527 for (int i = 0; i < table.Columns.Count; i++) 528 { 529 switch (table.Columns[i].DataType.FullName) 530 { 531 case "System.String": 532 { 533 sqlstr += "[" + table.Columns[i].ColumnName + "] [nvarchar](4000) NULL,"; 534 } 535 break; 536 case "System.Int32": 537 { 538 sqlstr += "[" + table.Columns[i].ColumnName + "] [int] NULL,"; 539 } 540 break; 541 case "System.Double": 542 { 543 sqlstr += "[" + table.Columns[i].ColumnName + "] [numeric](24,2) NULL,"; 544 } 545 break; 546 case "System.DateTime": 547 { 548 sqlstr += "[" + table.Columns[i].ColumnName + "] [datetime] NULL,"; 549 } 550 break; 551 default: 552 { 553 sqlstr += "[" + table.Columns[i].ColumnName + "] [nvarchar](4000) NULL,"; 554 } 555 break; 556 } 557 } 558 sqlstr = sqlstr.Substring(0, sqlstr.Length - 1) + ")"; 559 560 if (connStr.State != ConnectionState.Open) 561 { 562 connStr.Open(); 563 } 564 565 SqlCommand cmd = GetSqlCommand(connStr, sqlstr, CommandType.Text, null); 566 int result = cmd.ExecuteNonQuery(); 567 cmd.Dispose(); 568 return ""; 569 } 570 catch (Exception e) 571 { 572 return e.ToString(); 573 } 574 } 575 576 #endregion 577 578 579 } 580