数据库函数..........
1
using
System;
2
using
System.Data;
3
using
System.Data.SqlClient;
4
5
using
CommonClass;
6
7
namespace
SqlConnClass
8
{
9
/**//// <summary>
10
/// SqlConn 的摘要说明。
11
/// </summary>
12 public class SqlConn
13 {
14 private SqlConnection _SConn;
15
16 构造函数#region 构造函数
17 public SqlConn(string sqlconn)
18 {
19 this._SConn=new SqlConnection(sqlconn);
20
21 }
22 #endregion
23
24 public SqlConnection SConn
25 {
26 get{return _SConn;}
27 }
28
29
30
31 public enum DBOperate
32 {
33 Insert=1,
34 Update,
35 Delete,
36 Pause,
37 Select,
38 Order,
39 Other
40 }
41
42 打开关闭连接 Open(),Close()#region 打开关闭连接 Open(),Close()
43 public void Open()
44 {_SConn.Open();}
45
46 public void Close()
47 {_SConn.Close();}
48 #endregion
49
50 根据语句查询返回DataSet SelectBySql(string sqlstr)#region 根据语句查询返回DataSet SelectBySql(string sqlstr)
51 public DataSet SelectBySql(string sqlstr)
52 {
53 SqlDataAdapter da;
54 DataSet ds=new DataSet();
55
56 da = new SqlDataAdapter( "SelectBySql", _SConn );
57 da.SelectCommand.CommandType = CommandType.StoredProcedure;
58 da.SelectCommand.Parameters.Add( new SqlParameter( "@SqlStr", sqlstr ) );
59 da.Fill(ds);
60 da.Dispose();
61
62 return ds;
63 }
64 #endregion
65
66 3参数 根据 ID 返回一行SqlDataReader SelectByKey(int KeyValue,string TableName,string KeyName)#region 3参数 根据 ID 返回一行SqlDataReader SelectByKey(int KeyValue,string TableName,string KeyName)
67 public SqlDataReader SelectByKey(int KeyValue,string TableName,string KeyName)
68 {
69 //一般为前台页面使用该函数，不涉及到数据更新
70 string Sqlstr="";
71 Sqlstr="select * from "+TableName+" where "+KeyName+"="+KeyValue;
72 SqlDataReader r;
73 SqlCommand com=new SqlCommand(Sqlstr,_SConn);
74 Open();
75 r = com.ExecuteReader();
76
77 return r;
78
79 }
80 #endregion
81
82 3参数 根据 字符串 返回一行SqlDataReader SelectByKey(int KeyValue,string TableName,string KeyName)#region 3参数 根据 字符串 返回一行SqlDataReader SelectByKey(int KeyValue,string TableName,string KeyName)
83 public SqlDataReader SelectByKey(string KeyValue,string TableName,string KeyName)
84 {
85 //一般为前台页面使用该函数，不涉及到数据更新
86 string Sqlstr="";
87 Sqlstr="select * from "+TableName+" where "+KeyName+"='"+KeyValue+"'";
88 SqlDataReader r;
89 SqlCommand com=new SqlCommand(Sqlstr,_SConn);
90 Open();
91 r = com.ExecuteReader();
92 com.Dispose();
93 return r;
94
95 }
96 #endregion
97
98 1参数 根据语句返回一行SqlDataReader SelectByKey(string sqlstr)#region 1参数 根据语句返回一行SqlDataReader SelectByKey(string sqlstr)
99 public SqlDataReader SelectByKey(string sqlstr)
100 {
101 SqlDataReader r=null;
102
103 SqlCommand com=new SqlCommand(sqlstr,_SConn);
104 Open();
105 r = com.ExecuteReader();
106 com.Dispose();
107 return r;
108 }
109 #endregion
110
111 根据关键字删除一行bool DelectByKey(object KeyValue,string TableName,string KeyName)#region 根据关键字删除一行bool DelectByKey(object KeyValue,string TableName,string KeyName)
112 public bool DelectByKey(object KeyValue,string TableName,string KeyName)
113 {
114 try
115 {
116 string Sqlstr="";
117
118 if(Common.IsNum(KeyValue))
119 Sqlstr="Delete from "+TableName+" where "+KeyName+"="+Convert.ToInt32(KeyValue.ToString());
120 else
121 Sqlstr="delete from "+TableName+" where "+KeyName+"='"+KeyValue.ToString()+"'";
122
123 Open();
124 SqlCommand com=new SqlCommand(Sqlstr,_SConn);
125 com.ExecuteNonQuery();
126 Close();
127 com.Dispose();
128 return true;
129 }
130 catch
131 {
132 Close();
133 return false;
134 }
135 }
136 #endregion
137
138 操作函数 bool Operate(string SqlStr)#region 操作函数 bool Operate(string SqlStr)
139 public bool Operate(string SqlStr)
140 {
141
142 try
143 {
144
145 Open();
146 SqlCommand com=new SqlCommand( SqlStr, _SConn );
147 com.ExecuteNonQuery();
148 Close();
149 com.Dispose();
150 return true;
151 }
152 catch
153 {
154 Close();
155 return false;
156 }
157 }
158 #endregion
159
160 统计记录数 GetCount(string sqlstr)#region 统计记录数 GetCount(string sqlstr)
161 public string GetCount(string sqlstr)
162 {
163 string str="";
164 SqlDataReader r;
165
166 SqlCommand com=new SqlCommand(sqlstr,this._SConn);
167 Open();
168 r = com.ExecuteReader();
169 if(r.Read())
170 str=r["sum"].ToString();
171 else
172 str="";
173 r.Close();
174 Close();
175
176 return str;
177 }
178 #endregion
179
180 分页#region 分页
181 public DataSet CutPage(int operation,string TableName,string FieldLists,string KeyField,
182 string Critical,string SortType,int PageSize,int ShowPageNo)
183 {
184 return CutPage(operation,TableName,FieldLists,KeyField,
185 Critical,SortType,PageSize,ShowPageNo,"");
186 }
187
188 public DataSet CutPage(int operation,string TableName,string FieldLists,string KeyField,
189 string Critical,string SortType,int PageSize,int ShowPageNo,string Group)
190 {
191 // operation int, --操作類型,0為取得當前頁記錄集，1為取得記錄總數(RecordCount)
192 // @TableName varchar(100), --要操作的表名
193 // @FieldLists varchar(8000), --字段列表，可以為'*",也可為空
194 // @KeyField varchar(100), --關鍵字段名
195 // @Critical varchar(200), --查詢條件
196 // @SortType varchar(4), --排序類型,為'DESC'或者'ASC',為空是默認為'ASC'
197 // @PageSize int, --每頁大小，大於0的整數
198 // @ShowPageNo int --當前要顯示的頁碼，大於0的整數，頁數從1開始
199 SqlDataAdapter da;
200 DataSet ds=new DataSet();
201 da = new SqlDataAdapter( "CutPage", _SConn );
202 da.SelectCommand.CommandType = CommandType.StoredProcedure;
203 da.SelectCommand.Parameters.Add( new SqlParameter( "@operation", operation ) );
204 da.SelectCommand.Parameters.Add( new SqlParameter( "@TableName", TableName ) );
205 da.SelectCommand.Parameters.Add( new SqlParameter( "@FieldLists", FieldLists ) );
206 da.SelectCommand.Parameters.Add( new SqlParameter( "@KeyField", KeyField ) );
207 da.SelectCommand.Parameters.Add( new SqlParameter( "@Critical", Critical ) );
208 da.SelectCommand.Parameters.Add( new SqlParameter( "@SortType", SortType ) );
209 da.SelectCommand.Parameters.Add( new SqlParameter( "@PageSize", PageSize ) );
210 da.SelectCommand.Parameters.Add( new SqlParameter( "@ShowPageNo", ShowPageNo ) );
211 da.SelectCommand.Parameters.Add( new SqlParameter( "@Group", Group ) );
212 da.Fill(ds);
213
214 return ds;
215 }
216 #endregion
217
218
219 /**//////////////////////////////////////////////////////////////////////////////////////////////////////////////
220
221 基础函数#region 基础函数
222 private static void AttachParameters(SqlCommand command, SqlParameter[] commandParameters)
223 {
224 foreach (SqlParameter p in commandParameters)
225 {
226 //check for derived output value with no value assigned
227 if ((p.Direction == ParameterDirection.InputOutput) && (p.Value == null))
228 {
229 p.Value = DBNull.Value;
230 }
231
232 command.Parameters.Add(p);
233 }
234 }
235
236 private static void PrepareCommand(SqlCommand command, SqlConnection connection, SqlTransaction transaction, CommandType commandType, string commandText, SqlParameter[] commandParameters)
237 {
238 //if the provided connection is not open, we will open it
239 if (connection.State != ConnectionState.Open)
240 {
241 connection.Open();
242 }
243
244 //associate the connection with the command
245 command.Connection = connection;
246
247 //set the command text (stored procedure name or SQL statement)
248 command.CommandText = commandText;
249
250 //if we were provided a transaction, assign it.
251 if (transaction != null)
252 {
253 command.Transaction = transaction;
254 }
255
256 //set the command type
257 command.CommandType = commandType;
258
259 //attach the command parameters if they are provided
260 if (commandParameters != null)
261 {
262 AttachParameters(command, commandParameters);
263 }
264
265 return;
266 }
267
268 #endregion
269
270 执行SQL语句#region 执行SQL语句
271
272 /**//// <summary>
273 /// 执行SQL语句,返回受影响的行数
274 /// </summary>
275 /// <param name="strSql">SQL语句</param>
276 public int ExecNonSql(string strSql)
277 {
278 return ExecNonSql(strSql,null);
279 }
280 public int ExecNonSql(string strSql,SqlParameter[] commandParameters)
281 {
282 SqlCommand cmd = new SqlCommand();
283 PrepareCommand(cmd,_SConn,null,CommandType.Text,strSql,commandParameters);
284 int retval = cmd.ExecuteNonQuery();
285
286 this.Close();
287 return retval;
288 }
289
290 /**//// <summary>
291 /// 执行SQL语句,返回第一行第一列字符串
292 /// </summary>
293 /// <param name="strSql">SQL语句</param>
294 public string ExecScalarSql(string strSql)
295 {
296 return ExecScalarSql(strSql,null);
297 }
298 public string ExecScalarSql(string strSql,SqlParameter[] commandParameters)
299 {
300 SqlCommand cmd = new SqlCommand();
301 PrepareCommand(cmd,_SConn,null,CommandType.Text,strSql,commandParameters);
302 object retval = cmd.ExecuteScalar();
303 if(retval == null)
304 retval = "";
305
306 this.Close();
307 return retval.ToString();
308 }
309
310 /**//// <summary>
311 /// 执行SQL语句,返回一个SqlDataReader对象
312 /// </summary>
313 /// <param name="strSql">SQL语句</param>
314 public SqlDataReader ExecReaderSql(string strSql)
315 {
316 return ExecReaderSql(strSql,null);
317 }
318
319 public SqlDataReader ExecReaderSql(string strSql,SqlParameter[] commandParameters)
320 {
321 SqlCommand cmd = new SqlCommand();
322 PrepareCommand(cmd,_SConn,null,CommandType.Text,strSql,commandParameters);
323
324 SqlDataReader dr;
325 dr = cmd.ExecuteReader();
326
327 return dr;
328 }
329
330 /**//// <summary>
331 /// 执行SQL语句,返回一个DataSet对象
332 /// </summary>
333 /// <param name="strSql">SQL语句</param>
334 public DataSet ExecDatasetSql(string strSql)
335 {
336 return ExecDatasetSql(strSql,null);
337 }
338 public DataSet ExecDatasetSql(string strSql,SqlParameter[] commandParameters)
339 {
340 SqlCommand cmd = new SqlCommand();
341 PrepareCommand(cmd,_SConn,null,CommandType.Text,strSql,commandParameters);
342
343 //create the DataAdapter & DataSet
344 SqlDataAdapter da = new SqlDataAdapter(cmd);
345 DataSet ds = new DataSet();
346
347 da.Fill(ds);
348
349 cmd.Parameters.Clear();
350
351 this.Close();
352 return ds;
353 }
354
355 #endregion
356
357 执行存储过程#region 执行存储过程
358
359 /**//// <summary>
360 /// 执行SQL存储过程,返回受影响的行数
361 /// </summary>
362 /// <param name="spSql">存储过程名</param>
363 /// <param name="parameterValues">存储过程参数</param>
364 public int ExecNonSP(string spSql)
365 {
366 return ExecNonSP(spSql,null);
367 }
368 public int ExecNonSP(string spSql,SqlParameter[] commandParameters)
369 {
370 SqlCommand cmd = new SqlCommand();
371
372 PrepareCommand(cmd,_SConn,null,CommandType.StoredProcedure,spSql,commandParameters);
373
374 int retval = cmd.ExecuteNonQuery();
375 cmd.Parameters.Clear();
376
377 this.Close();
378 return retval;
379 }
380 /**//// <summary>
381 /// 执行SQL存储过程,返回第一行第一列字符串
382 /// </summary>
383 /// <param name="spSql">存储过程名</param>
384 /// <param name="parameterValues">存储过程参数</param>
385 public string ExecScalarSP(string spSql)
386 {
387 return ExecScalarSP(spSql,null);
388 }
389 public string ExecScalarSP(string spSql,SqlParameter[] commandParameters)
390 {
391 SqlCommand cmd = new SqlCommand();
392 PrepareCommand(cmd,_SConn,null,CommandType.StoredProcedure,spSql,commandParameters);
393 object retval = cmd.ExecuteScalar();
394 cmd.Parameters.Clear();
395
396 if(retval == null)
397 retval = "";
398
399 this.Close();
400 return retval.ToString();
401 }
402
403 /**//// <summary>
404 /// 执行SQL存储过程,返回一个SqlDataReader对象
405 /// </summary>
406 /// <param name="strSql">SQL语句</param>
407 public SqlDataReader ExecReaderSP(string spSql)
408 {
409 return ExecReaderSP(spSql,null);
410 }
411 public SqlDataReader ExecReaderSP(string spSql,SqlParameter[] commandParameters)
412 {
413 SqlCommand cmd = new SqlCommand();
414 PrepareCommand(cmd,_SConn,null,CommandType.StoredProcedure,spSql,commandParameters);
415
416 SqlDataReader dr;
417 dr = cmd.ExecuteReader();
418 cmd.Parameters.Clear();
419
420 return dr;
421 }
422
423 /**//// <summary>
424 /// 执行SQL语句,返回一个DataSet对象
425 /// </summary>
426 /// <param name="strSql">SQL语句</param>
427 public DataSet ExecDatasetSP(string spSql)
428 {
429 return ExecDatasetSP(spSql,null);
430 }
431 public DataSet ExecDatasetSP(string spSql,SqlParameter[] commandParameters)
432 {
433 SqlCommand cmd = new SqlCommand();
434 PrepareCommand(cmd,_SConn,null,CommandType.StoredProcedure,spSql,commandParameters);
435
436 //create the DataAdapter & DataSet
437 SqlDataAdapter da = new SqlDataAdapter(cmd);
438 DataSet ds = new DataSet();
439
440 da.Fill(ds);
441
442 cmd.Parameters.Clear();
443
444 this.Close();
445 return ds;
446 }
447
448 #endregion
449
450 执行XML#region 执行XML
451 #endregion
452
453 /**//////////////////////////////////////////////////////////////////////////////////////////////////////////////
454 }
455
}
456
using
System;2
using
System.Data;3
using
System.Data.SqlClient;4
5
using
CommonClass;6
7
namespace
SqlConnClass8
{9
/**//// <summary>10
/// SqlConn 的摘要说明。11
/// </summary>12
public class SqlConn13
{14
private SqlConnection _SConn;15
16
构造函数#region 构造函数17
public SqlConn(string sqlconn)18
{19
this._SConn=new SqlConnection(sqlconn);20
21
}22
#endregion23
24
public SqlConnection SConn25
{26
get{return _SConn;}27
}28
29
30
31
public enum DBOperate32
{33
Insert=1,34
Update,35
Delete,36
Pause,37
Select,38
Order,39
Other40
}41
42
打开关闭连接 Open(),Close()#region 打开关闭连接 Open(),Close()43
public void Open()44
{_SConn.Open();}45
46
public void Close()47
{_SConn.Close();}48
#endregion 49
50
根据语句查询返回DataSet SelectBySql(string sqlstr)#region 根据语句查询返回DataSet SelectBySql(string sqlstr)51
public DataSet SelectBySql(string sqlstr)52
{53
SqlDataAdapter da;54
DataSet ds=new DataSet();55
56
da = new SqlDataAdapter( "SelectBySql", _SConn );57
da.SelectCommand.CommandType = CommandType.StoredProcedure;58
da.SelectCommand.Parameters.Add( new SqlParameter( "@SqlStr", sqlstr ) );59
da.Fill(ds);60
da.Dispose();61
62
return ds;63
}64
#endregion65
66
3参数 根据 ID 返回一行SqlDataReader SelectByKey(int KeyValue,string TableName,string KeyName)#region 3参数 根据 ID 返回一行SqlDataReader SelectByKey(int KeyValue,string TableName,string KeyName)67
public SqlDataReader SelectByKey(int KeyValue,string TableName,string KeyName)68
{69
//一般为前台页面使用该函数，不涉及到数据更新70
string Sqlstr="";71
Sqlstr="select * from "+TableName+" where "+KeyName+"="+KeyValue;72
SqlDataReader r;73
SqlCommand com=new SqlCommand(Sqlstr,_SConn);74
Open();75
r = com.ExecuteReader();76
77
return r;78
79
}80
#endregion81
82
3参数 根据 字符串 返回一行SqlDataReader SelectByKey(int KeyValue,string TableName,string KeyName)#region 3参数 根据 字符串 返回一行SqlDataReader SelectByKey(int KeyValue,string TableName,string KeyName)83
public SqlDataReader SelectByKey(string KeyValue,string TableName,string KeyName)84
{85
//一般为前台页面使用该函数，不涉及到数据更新86
string Sqlstr="";87
Sqlstr="select * from "+TableName+" where "+KeyName+"='"+KeyValue+"'";88
SqlDataReader r;89
SqlCommand com=new SqlCommand(Sqlstr,_SConn);90
Open();91
r = com.ExecuteReader();92
com.Dispose();93
return r;94
95
}96
#endregion97
98
1参数 根据语句返回一行SqlDataReader SelectByKey(string sqlstr)#region 1参数 根据语句返回一行SqlDataReader SelectByKey(string sqlstr)99
public SqlDataReader SelectByKey(string sqlstr)100
{101
SqlDataReader r=null;102
103
SqlCommand com=new SqlCommand(sqlstr,_SConn);104
Open();105
r = com.ExecuteReader();106
com.Dispose();107
return r;108
}109
#endregion110
111
根据关键字删除一行bool DelectByKey(object KeyValue,string TableName,string KeyName)#region 根据关键字删除一行bool DelectByKey(object KeyValue,string TableName,string KeyName)112
public bool DelectByKey(object KeyValue,string TableName,string KeyName)113
{114
try115
{116
string Sqlstr="";117
118
if(Common.IsNum(KeyValue))119
Sqlstr="Delete from "+TableName+" where "+KeyName+"="+Convert.ToInt32(KeyValue.ToString());120
else121
Sqlstr="delete from "+TableName+" where "+KeyName+"='"+KeyValue.ToString()+"'";122
123
Open();124
SqlCommand com=new SqlCommand(Sqlstr,_SConn);125
com.ExecuteNonQuery();126
Close();127
com.Dispose();128
return true;129
}130
catch131
{132
Close();133
return false;134
}135
}136
#endregion137
138
操作函数 bool Operate(string SqlStr)#region 操作函数 bool Operate(string SqlStr)139
public bool Operate(string SqlStr)140
{141
142
try143
{144
145
Open();146
SqlCommand com=new SqlCommand( SqlStr, _SConn );147
com.ExecuteNonQuery();148
Close();149
com.Dispose();150
return true;151
}152
catch153
{154
Close();155
return false;156
}157
}158
#endregion159
160
统计记录数 GetCount(string sqlstr)#region 统计记录数 GetCount(string sqlstr)161
public string GetCount(string sqlstr)162
{163
string str="";164
SqlDataReader r;165
166
SqlCommand com=new SqlCommand(sqlstr,this._SConn);167
Open();168
r = com.ExecuteReader();169
if(r.Read())170
str=r["sum"].ToString();171
else172
str="";173
r.Close();174
Close();175
176
return str;177
}178
#endregion179
180
分页#region 分页181
public DataSet CutPage(int operation,string TableName,string FieldLists,string KeyField,182
string Critical,string SortType,int PageSize,int ShowPageNo)183
{184
return CutPage(operation,TableName,FieldLists,KeyField,185
Critical,SortType,PageSize,ShowPageNo,"");186
}187
188
public DataSet CutPage(int operation,string TableName,string FieldLists,string KeyField,189
string Critical,string SortType,int PageSize,int ShowPageNo,string Group)190
{191
// operation int, --操作類型,0為取得當前頁記錄集，1為取得記錄總數(RecordCount)192
// @TableName varchar(100), --要操作的表名193
// @FieldLists varchar(8000), --字段列表，可以為'*",也可為空194
// @KeyField varchar(100), --關鍵字段名195
// @Critical varchar(200), --查詢條件196
// @SortType varchar(4), --排序類型,為'DESC'或者'ASC',為空是默認為'ASC'197
// @PageSize int, --每頁大小，大於0的整數198
// @ShowPageNo int --當前要顯示的頁碼，大於0的整數，頁數從1開始199
SqlDataAdapter da;200
DataSet ds=new DataSet();201
da = new SqlDataAdapter( "CutPage", _SConn );202
da.SelectCommand.CommandType = CommandType.StoredProcedure;203
da.SelectCommand.Parameters.Add( new SqlParameter( "@operation", operation ) );204
da.SelectCommand.Parameters.Add( new SqlParameter( "@TableName", TableName ) );205
da.SelectCommand.Parameters.Add( new SqlParameter( "@FieldLists", FieldLists ) );206
da.SelectCommand.Parameters.Add( new SqlParameter( "@KeyField", KeyField ) );207
da.SelectCommand.Parameters.Add( new SqlParameter( "@Critical", Critical ) );208
da.SelectCommand.Parameters.Add( new SqlParameter( "@SortType", SortType ) );209
da.SelectCommand.Parameters.Add( new SqlParameter( "@PageSize", PageSize ) );210
da.SelectCommand.Parameters.Add( new SqlParameter( "@ShowPageNo", ShowPageNo ) );211
da.SelectCommand.Parameters.Add( new SqlParameter( "@Group", Group ) );212
da.Fill(ds);213
214
return ds;215
}216
#endregion217
218
219
/**//////////////////////////////////////////////////////////////////////////////////////////////////////////////220
221
基础函数#region 基础函数222
private static void AttachParameters(SqlCommand command, SqlParameter[] commandParameters)223
{224
foreach (SqlParameter p in commandParameters)225
{226
//check for derived output value with no value assigned227
if ((p.Direction == ParameterDirection.InputOutput) && (p.Value == null))228
{229
p.Value = DBNull.Value;230
}231
232
command.Parameters.Add(p);233
}234
}235
236
private static void PrepareCommand(SqlCommand command, SqlConnection connection, SqlTransaction transaction, CommandType commandType, string commandText, SqlParameter[] commandParameters)237
{238
//if the provided connection is not open, we will open it239
if (connection.State != ConnectionState.Open)240
{241
connection.Open();242
}243
244
//associate the connection with the command245
command.Connection = connection;246
247
//set the command text (stored procedure name or SQL statement)248
command.CommandText = commandText;249
250
//if we were provided a transaction, assign it.251
if (transaction != null)252
{253
command.Transaction = transaction;254
}255
256
//set the command type257
command.CommandType = commandType;258
259
//attach the command parameters if they are provided260
if (commandParameters != null)261
{262
AttachParameters(command, commandParameters);263
}264
265
return;266
}267
268
#endregion269
270
执行SQL语句#region 执行SQL语句271
272
/**//// <summary>273
/// 执行SQL语句,返回受影响的行数274
/// </summary>275
/// <param name="strSql">SQL语句</param>276
public int ExecNonSql(string strSql)277
{278
return ExecNonSql(strSql,null);279
}280
public int ExecNonSql(string strSql,SqlParameter[] commandParameters)281
{282
SqlCommand cmd = new SqlCommand();283
PrepareCommand(cmd,_SConn,null,CommandType.Text,strSql,commandParameters);284
int retval = cmd.ExecuteNonQuery();285
286
this.Close();287
return retval;288
}289
290
/**//// <summary>291
/// 执行SQL语句,返回第一行第一列字符串292
/// </summary>293
/// <param name="strSql">SQL语句</param>294
public string ExecScalarSql(string strSql)295
{296
return ExecScalarSql(strSql,null);297
}298
public string ExecScalarSql(string strSql,SqlParameter[] commandParameters)299
{300
SqlCommand cmd = new SqlCommand();301
PrepareCommand(cmd,_SConn,null,CommandType.Text,strSql,commandParameters);302
object retval = cmd.ExecuteScalar();303
if(retval == null)304
retval = "";305
306
this.Close();307
return retval.ToString();308
}309
310
/**//// <summary>311
/// 执行SQL语句,返回一个SqlDataReader对象312
/// </summary>313
/// <param name="strSql">SQL语句</param>314
public SqlDataReader ExecReaderSql(string strSql)315
{316
return ExecReaderSql(strSql,null);317
}318
319
public SqlDataReader ExecReaderSql(string strSql,SqlParameter[] commandParameters)320
{321
SqlCommand cmd = new SqlCommand();322
PrepareCommand(cmd,_SConn,null,CommandType.Text,strSql,commandParameters);323
324
SqlDataReader dr;325
dr = cmd.ExecuteReader();326
327
return dr;328
}329
330
/**//// <summary>331
/// 执行SQL语句,返回一个DataSet对象332
/// </summary>333
/// <param name="strSql">SQL语句</param>334
public DataSet ExecDatasetSql(string strSql)335
{336
return ExecDatasetSql(strSql,null);337
}338
public DataSet ExecDatasetSql(string strSql,SqlParameter[] commandParameters)339
{340
SqlCommand cmd = new SqlCommand();341
PrepareCommand(cmd,_SConn,null,CommandType.Text,strSql,commandParameters);342
343
//create the DataAdapter & DataSet344
SqlDataAdapter da = new SqlDataAdapter(cmd);345
DataSet ds = new DataSet();346
347
da.Fill(ds);348
349
cmd.Parameters.Clear();350
351
this.Close();352
return ds; 353
}354
355
#endregion356
357
执行存储过程#region 执行存储过程358
359
/**//// <summary>360
/// 执行SQL存储过程,返回受影响的行数361
/// </summary>362
/// <param name="spSql">存储过程名</param>363
/// <param name="parameterValues">存储过程参数</param>364
public int ExecNonSP(string spSql)365
{366
return ExecNonSP(spSql,null);367
}368
public int ExecNonSP(string spSql,SqlParameter[] commandParameters)369
{370
SqlCommand cmd = new SqlCommand();371
372
PrepareCommand(cmd,_SConn,null,CommandType.StoredProcedure,spSql,commandParameters);373
374
int retval = cmd.ExecuteNonQuery();375
cmd.Parameters.Clear();376
377
this.Close();378
return retval;379
}380
/**//// <summary>381
/// 执行SQL存储过程,返回第一行第一列字符串382
/// </summary>383
/// <param name="spSql">存储过程名</param>384
/// <param name="parameterValues">存储过程参数</param>385
public string ExecScalarSP(string spSql)386
{387
return ExecScalarSP(spSql,null);388
}389
public string ExecScalarSP(string spSql,SqlParameter[] commandParameters)390
{391
SqlCommand cmd = new SqlCommand();392
PrepareCommand(cmd,_SConn,null,CommandType.StoredProcedure,spSql,commandParameters);393
object retval = cmd.ExecuteScalar();394
cmd.Parameters.Clear();395
396
if(retval == null)397
retval = "";398
399
this.Close();400
return retval.ToString();401
}402
403
/**//// <summary>404
/// 执行SQL存储过程,返回一个SqlDataReader对象405
/// </summary>406
/// <param name="strSql">SQL语句</param>407
public SqlDataReader ExecReaderSP(string spSql)408
{409
return ExecReaderSP(spSql,null);410
}411
public SqlDataReader ExecReaderSP(string spSql,SqlParameter[] commandParameters)412
{413
SqlCommand cmd = new SqlCommand();414
PrepareCommand(cmd,_SConn,null,CommandType.StoredProcedure,spSql,commandParameters);415
416
SqlDataReader dr;417
dr = cmd.ExecuteReader();418
cmd.Parameters.Clear();419
420
return dr;421
}422
423
/**//// <summary>424
/// 执行SQL语句,返回一个DataSet对象425
/// </summary>426
/// <param name="strSql">SQL语句</param>427
public DataSet ExecDatasetSP(string spSql)428
{429
return ExecDatasetSP(spSql,null);430
}431
public DataSet ExecDatasetSP(string spSql,SqlParameter[] commandParameters)432
{433
SqlCommand cmd = new SqlCommand();434
PrepareCommand(cmd,_SConn,null,CommandType.StoredProcedure,spSql,commandParameters);435
436
//create the DataAdapter & DataSet437
SqlDataAdapter da = new SqlDataAdapter(cmd);438
DataSet ds = new DataSet();439
440
da.Fill(ds);441
442
cmd.Parameters.Clear();443
444
this.Close();445
return ds; 446
}447
448
#endregion449
450
执行XML#region 执行XML451
#endregion452
453
/**//////////////////////////////////////////////////////////////////////////////////////////////////////////////454
}455
}
456