本文转载于： http://www.cnblogs.com/zfanlong1314/p/3916047.html
1 /// 常用工具类——Excel操作类
2 /// <para> ------------------------------------------------</para>
3 /// <para> CreateConnection：根据Excel文件路径和EXCEL驱动版本生成OleConnection对象实例</para>
4 /// <para> ExecuteDataSet：执行一条SQL语句，返回一个DataSet对象</para>
5 /// <para> ExecuteDataTable：执行一条SQL语句，返回一个DataTable对象</para>
6 /// <para> ExecuteDataAdapter：表示一组数据命令和一个数据库连接，它们用于填充 DataSet 和更新数据源。</para>
7 /// <para> ExecuteNonQuery：执行数据库语句返回受影响的行数，失败或异常返回-1[通常为:INSERT、DELETE、UPDATE 和 SET 语句等命令]。</para>
8 /// <para> ExecuteScalar：执行数据库语句返回第一行第一列，失败或异常返回null</para>
9 /// <para> ExecuteDataReader：执行数据库语句返回一个自进结果集流</para>
10 /// <para> GetWorkBookName：获取Excel中的所有工作簿</para>
11 /// </summary>
12 public class ExcelHelper
13 {
14 private ExcelHelper() { }
15
16 #region EXCEL版本
17 /// <summary>
18 /// EXCEL版本
19 /// </summary>
20 public enum ExcelVerion
21 {
22 /// <summary>
23 /// Excel97-2003版本
24 /// </summary>
25 Excel2003,
26 /// <summary>
27 /// Excel2007版本
28 /// </summary>
29 Excel2007
30 }
31 #endregion
32
33 #region 根据EXCEL路径生成OleDbConnectin对象
34 /// <summary>
35 /// 根据EXCEL路径生成OleDbConnectin对象
36 /// </summary>
37 /// <param name="ExcelFilePath">EXCEL文件相对于站点根目录的路径</param>
38 /// <param name="Verion">Excel数据驱动版本：97-2003或2007,分别需要安装数据驱动软件</param>
39 /// <returns>OleDbConnection对象</returns>
40 public static OleDbConnection CreateConnection(string ExcelFilePath, ExcelVerion Verion)
41 {
42 OleDbConnection Connection = null;
43 string strConnection = string.Empty;
44 try
45 {
46 switch (Verion)
47 {
48 case ExcelVerion.Excel2003: //读取Excel97-2003版本
49 strConnection = "Provider=Microsoft.Jet.OLEDB.4.0; " +
50 "Data Source=" + ExcelFilePath + ";Extended Properties=Excel 8.0";
51 break;
52 case ExcelVerion.Excel2007: //读取Excel2007版本
53 strConnection = "Provider=Microsoft.ACE.OLEDB.12.0;Extended Properties=‘Excel 12.0;HDR=YES‘;data source=" + ExcelFilePath;
54 break;
55 }
56 if (!string.IsNullOrEmpty(strConnection)) Connection = new OleDbConnection(strConnection);
57 }
58 catch (Exception)
59 {
60 }
61
62 return Connection;
63 }
64 #endregion
65
66 #region 创建一个OleDbCommand对象实例
67 /// <summary>
68 /// 创建一个OleDbCommand对象实例
69 /// </summary>
70 /// <param name="CommandText">SQL命令</param>
71 /// <param name="Connection">数据库连接对象实例OleDbConnection</param>
72 /// <param name="OleDbParameters">可选参数</param>
73 /// <returns></returns>
74 private static OleDbCommand CreateCommand(string CommandText, OleDbConnection Connection, params System.Data.OleDb.OleDbParameter[] OleDbParameters)
75 {
76 if (Connection.State == ConnectionState.Closed)
77 Connection.Open();
78 OleDbCommand comm = new OleDbCommand(CommandText, Connection);
79 if (OleDbParameters != null)
80 {
81 foreach (OleDbParameter parm in OleDbParameters)
82 {
83 comm.Parameters.Add(parm);
84 }
85 }
86 return comm;
87 }
88 #endregion
89
90 #region 执行一条SQL语句，返回一个DataSet对象
91 /// <summary>
92 /// 执行一条SQL语句，返回一个DataSet对象
93 /// </summary>
94 /// <param name="Connection">OleDbConnection对象</param>
95 /// <param name="CommandText">SQL语句</param>
96 /// <param name="OleDbParameters">OleDbParameter可选参数</param>
97 /// <returns>DataSet对象</returns>
98 public static DataSet ExecuteDataSet(OleDbConnection Connection, string CommandText, params OleDbParameter[] OleDbParameters)
99 {
100 DataSet ds = new DataSet();
101 try
102 {
103 OleDbCommand comm = CreateCommand(CommandText, Connection, OleDbParameters);
104 OleDbDataAdapter da = new OleDbDataAdapter(comm);
105 da.Fill(ds);
106 }
107 catch (Exception ex)
108 {
109 throw ex;
110 }
111 finally
112 {
113 if (Connection.State == ConnectionState.Open) Connection.Close();
114 }
115
116 return ds;
117 }
118 #endregion
119
120 #region 执行一条SQL语句,返回一个DataTable对象
121 /// <summary>
122 /// 执行一条SQL语句,返回一个DataTable对象
123 /// </summary>
124 /// <param name="Connection">OleDbConnection对象</param>
125 /// <param name="CommandText">SQL语句</param>
126 /// <param name="OleDbParameters">OleDbParameter可选参数</param>
127 /// <returns>DataSet对象</returns>
128 public static DataTable ExecuteDataTable(OleDbConnection Connection, string CommandText, params OleDbParameter[] OleDbParameters)
129 {
130 DataTable Dt = null;
131 try
132 {
133 OleDbCommand comm = CreateCommand(CommandText, Connection, OleDbParameters);
134 OleDbDataAdapter da = new OleDbDataAdapter(comm);
135 DataSet Ds = new DataSet();
136 da.Fill(Ds);
137 Dt = Ds.Tables[0];
138 }
139 catch (Exception)
140 {
141 }
142 finally
143 {
144 if (Connection.State == ConnectionState.Open) Connection.Close();
145 }
146 return Dt;
147 }
148
149 #endregion
150
151 #region 表示一组数据命令和一个数据库连接，它们用于填充 DataSet 和更新数据源。
152 /// <summary>
153 /// 表示一组数据命令和一个数据库连接，它们用于填充 DataSet 和更新数据源。
154 /// </summary>
155 /// <param name="Connection">OleDbConnection对象</param>
156 /// <param name="CommandText">SQL语句</param>
157 /// <param name="OleDbParameters">OleDbParameter可选参数</param>
158 /// <returns></returns>
159 public static OleDbDataAdapter ExecuteDataAdapter(OleDbConnection Connection, string CommandText, params System.Data.OleDb.OleDbParameter[] OleDbParameters)
160 {
161 OleDbDataAdapter Da = null;
162 try
163 {
164 OleDbCommand comm = CreateCommand(CommandText, Connection, OleDbParameters);
165 Da = new OleDbDataAdapter(comm);
166 OleDbCommandBuilder cb = new OleDbCommandBuilder(Da);
167 }
168 catch (Exception)
169 {
170 }
171 finally
172 {
173 if (Connection.State == ConnectionState.Open) Connection.Close();
174 }
175 return Da;
176 }
177 #endregion
178
179 #region 执行数据库语句返回受影响的行数，失败或异常返回-1[通常为:INSERT、DELETE、UPDATE 和 SET 语句等命令]。
180 /// <summary>
181 /// 执行数据库语句返回受影响的行数，失败或异常返回-1[通常为:INSERT、DELETE、UPDATE 和 SET 语句等命令]。
182 /// </summary>
183 /// <param name="Connection">OleDbConnection对象</param>
184 /// <param name="CommandText">SQL语句</param>
185 /// <param name="OleDbParameters">OleDbParameter可选参数</param>
186 /// <returns>受影响的行数</returns>
187 public static int ExecuteNonQuery(OleDbConnection Connection, string CommandText, params System.Data.OleDb.OleDbParameter[] OleDbParameters)
188 {
189 int i = -1;
190 try
191 {
192 if (Connection.State == ConnectionState.Closed) Connection.Open();
193 OleDbCommand comm = CreateCommand(CommandText, Connection, OleDbParameters);
194 i = comm.ExecuteNonQuery();
195 }
196 catch (Exception)
197 {
198 }
199 finally
200 {
201 if (Connection.State == ConnectionState.Open) Connection.Close();
202 }
203 return i;
204 }
205 #endregion
206
207 #region 执行数据库语句返回第一行第一列，失败或异常返回null
208 /// <summary>
209 /// 执行数据库语句返回第一行第一列，失败或异常返回null
210 /// </summary>
211 /// <param name="Connection">OleDbConnection对象</param>
212 /// <param name="CommandText">SQL语句</param>
213 /// <param name="OleDbParameters">OleDbParameter可选参数</param>
214 /// <returns>第一行第一列的值</returns>
215 public static object ExecuteScalar(OleDbConnection Connection, string CommandText, params System.Data.OleDb.OleDbParameter[] OleDbParameters)
216 {
217 object Result = null;
218 try
219 {
220 OleDbCommand comm = CreateCommand(CommandText, Connection, OleDbParameters);
221 Result = comm.ExecuteScalar();
222 }
223 catch (Exception)
224 {
225 }
226 finally
227 {
228 if (Connection.State == ConnectionState.Open) Connection.Close();
229 }
230 return Result;
231 }
232 #endregion
233
234 #region 执行数据库语句返回一个自进结果集流
235 /// <summary>
236 /// 执行数据库语句返回一个自进结果集流
237 /// </summary>
238 /// <param name="Connection">OleDbConnection对象</param>
239 /// <param name="CommandText">SQL语句</param>
240 /// <param name="OleDbParameters">OleDbParameter可选参数</param>
241 /// <returns>DataReader对象</returns>
242 public static OleDbDataReader ExecuteDataReader(OleDbConnection Connection, string CommandText, params System.Data.OleDb.OleDbParameter[] OleDbParameters)
243 {
244 OleDbDataReader Odr = null;
245 try
246 {
247 OleDbCommand comm = CreateCommand(CommandText, Connection, OleDbParameters);
248 Odr = comm.ExecuteReader();
249 }
250 catch (Exception)
251 {
252 }
253 finally
254 {
255 if (Connection.State == ConnectionState.Open) Connection.Close();
256 }
257 return Odr;
258 }
259 #endregion
260
261 #region 获取Excel中的所有工作簿
262 /// <summary>
263 /// 获取Excel中的所有工作簿
264 /// </summary>
265 /// <param name="Connection">OleDbConnection对象</param>
266 /// <returns></returns>
267 public static DataTable GetWorkBookName(OleDbConnection Connection)
268 {
269 DataTable Dt = null;
270 try
271 {
272 if (Connection.State == ConnectionState.Closed) Connection.Open();
273 Dt = Connection.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
274 }
275 catch (Exception)
276 {
277 }
278 finally
279 {
280 if (Connection.State == ConnectionState.Open) Connection.Close();
281 }
282 return Dt;
283 }
284 #endregion
285 }
时间： 2024-10-12 16:43:44