C# DataSet和Excel之间导入导出

 

  1     public class ImportExportToExcel
  2     {
  3         private string strConn ;
  4         
  5         private System.Windows.Forms.OpenFileDialog openFileDlg=new System.Windows.Forms.OpenFileDialog();
  6         private System.Windows.Forms.SaveFileDialog saveFileDlg=new System.Windows.Forms.SaveFileDialog();      
  7         
  8         public ImportExportToExcel()
  9         {
 10             //
 11             // TODO: 在此处添加构造函数逻辑
 12             //
 13             this.openFileDlg.DefaultExt = "xls";
 14             this.openFileDlg.Filter = "Excel文件 (*.xls)|*.xls";
 15 
 16             this.saveFileDlg.DefaultExt="xls";
 17             this.saveFileDlg.Filter= "Excel文件 (*.xls)|*.xls";
 18 
 19         }
 20 
 21         从Excel文件导入到DataSet#region 从Excel文件导入到DataSet
 22         //        /// <summary>
 23         //        /// 从Excel导入文件
 24         //        /// </summary>
 25         //        /// <param name="strExcelFileName">Excel文件名</param>
 26         //        /// <returns>返回DataSet</returns>
 27         //        public DataSet ImportFromExcel(string strExcelFileName)
 28         //        {
 29         //            return doImport(strExcelFileName);
 30         //        }
 31         /**//// <summary>
 32         /// 从选择的Excel文件导入
 33         /// </summary>
 34         /// <returns>DataSet</returns>
 35         public DataSet ImportFromExcel()
 36         {
 37             DataSet ds=new DataSet();
 38             if (openFileDlg.ShowDialog() == System.Windows.Forms.DialogResult.OK) 
 39                 ds=doImport(openFileDlg.FileName);
 40             return ds;
 41         }
 42         /**//// <summary>
 43         /// 从指定的Excel文件导入
 44         /// </summary>
 45         /// <param name="strFileName">Excel文件名</param>
 46         /// <returns></returns>
 47         public DataSet ImportFromExcel(string strFileName)
 48         {
 49             DataSet ds=new DataSet();
 50             ds=doImport(strFileName);
 51             return ds;
 52         }
 53         /**//// <summary>
 54         /// 执行导入
 55         /// </summary>
 56         /// <param name="strFileName">文件名</param>
 57         /// <returns>DataSet</returns>
 58         private DataSet doImport(string strFileName)
 59         {
 60             if (strFileName=="") return null;
 61               
 62             strConn = "Provider=Microsoft.Jet.OLEDB.4.0;" +
 63                 "Data Source=" +  strFileName + ";" +
 64                 "Extended Properties=Excel 8.0;";
 65             OleDbDataAdapter ExcelDA = new OleDbDataAdapter("SELECT * FROM [Sheet1$]", strConn);
 66 
 67             DataSet ExcelDs = new DataSet();
 68             try
 69             {
 70                 ExcelDA.Fill(ExcelDs, "ExcelInfo");
 71                 
 72             }
 73             catch(Exception err)
 74             {
 75                 System.Console.WriteLine( err.ToString() );
 76             }
 77             return ExcelDs;
 78             
 79             
 80         
 81         }
 82         #endregion
 83 
 84         从DataSet到出到Excel#region 从DataSet到出到Excel
 85         /**//// <summary>
 86         /// 导出指定的Excel文件
 87         /// </summary>
 88         /// <param name="ds">要导出的DataSet</param>
 89         /// <param name="strExcelFileName">要导出的Excel文件名</param>
 90         public void ExportToExcel(DataSet ds,string strExcelFileName)
 91         {
 92             if (ds.Tables.Count==0 || strExcelFileName=="") return;
 93             doExport(ds,strExcelFileName);
 94     
 95 
 96         }
 97         /**//// <summary>
 98         /// 导出用户选择的Excel文件
 99         /// </summary>
100         /// <param name="ds">DataSet</param>
101         public void ExportToExcel(DataSet ds)
102         {
103             if (saveFileDlg.ShowDialog() == System.Windows.Forms.DialogResult.OK) 
104                 doExport(ds,saveFileDlg.FileName);
105             
106         }
107         /**//// <summary>
108         /// 执行导出
109         /// </summary>
110         /// <param name="ds">要导出的DataSet</param>
111         /// <param name="strExcelFileName">要导出的文件名</param>
112         private void doExport(DataSet ds,string strExcelFileName)
113         {
114             
115             Excel.Application excel= new Excel.Application();
116             
117             //            Excel.Workbook obj=new Excel.WorkbookClass();
118             //            obj.SaveAs("c:\zn.xls",Excel.XlFileFormat.xlExcel9795,null,null,false,false,Excel.XlSaveAsAccessMode.xlNoChange,null,null,null,null);
119 
120             int rowIndex=1;
121             int colIndex=0;
122 
123             excel.Application.Workbooks.Add(true);
124             
125     
126             System.Data.DataTable table=ds.Tables[0] ;
127             foreach(DataColumn col in table.Columns)
128             {
129                 colIndex++;    
130                 excel.Cells[1,colIndex]=col.ColumnName;                
131             }
132 
133             foreach(DataRow row in table.Rows)
134             {
135                 rowIndex++;
136                 colIndex=0;
137                 foreach(DataColumn col in table.Columns)
138                 {
139                     colIndex++;
140                     excel.Cells[rowIndex,colIndex]=row[col.ColumnName].ToString();
141                 }
142             }
143             excel.Visible=false;    
144             excel.Sheets[0] = "sss";
145             excel.ActiveWorkbook.SaveAs(strExcelFileName+".XLS",Excel.XlFileFormat.xlExcel9795,null,null,false,false,Excel.XlSaveAsAccessMode.xlNoChange,null,null,null,null);
146             
147             
148             //wkbNew.SaveAs strBookName
149 
150 
151             //excel.Save(strExcelFileName);
152             excel.Quit();
153             excel=null;
154             
155             GC.Collect();//垃圾回收
156         }
157         #endregion
158 
159         从XML导入到Dataset#region 从XML导入到Dataset
160 
161         /**//// <summary>
162         /// 从选择的XML文件导入
163         /// </summary>
164         /// <returns>DataSet</returns>
165         public DataSet ImportFromXML()
166         {
167             DataSet ds=new DataSet();
168             System.Windows.Forms.OpenFileDialog openFileDlg=new System.Windows.Forms.OpenFileDialog();
169             openFileDlg.DefaultExt="xml";
170             openFileDlg.Filter= "xml文件 (*.xml)|*.xml";
171             if (openFileDlg.ShowDialog() == System.Windows.Forms.DialogResult.OK) 
172                 try{ds.ReadXml(openFileDlg.FileName,System.Data.XmlReadMode.ReadSchema);}
173                 catch{}
174             return ds;
175         }
176         /**//// <summary>
177         /// 从指定的XML文件导入
178         /// </summary>
179         /// <param name="strFileName">XML文件名</param>
180         /// <returns></returns>
181         public DataSet ImportFromXML(string strFileName)
182         {
183             if (strFileName=="")
184                 return null;
185             DataSet ds=new DataSet();
186             try{ds.ReadXml(strFileName,System.Data.XmlReadMode.ReadSchema);}
187             catch{}
188             return ds;
189         }
190         
191         #endregion
192 
193         从DataSet导出到XML#region 从DataSet导出到XML
194         /**//// <summary>
195         /// 导出指定的XML文件
196         /// </summary>
197         /// <param name="ds">要导出的DataSet</param>
198         /// <param name="strXMLFileName">要导出的XML文件名</param>
199         public void ExportToXML(DataSet ds,string strXMLFileName)
200         {
201             if (ds.Tables.Count==0 || strXMLFileName=="") return;
202             doExportXML(ds,strXMLFileName);
203         }
204         /**//// <summary>
205         /// 导出用户选择的XML文件
206         /// </summary>
207         /// <param name="ds">DataSet</param>
208         public void ExportToXML(DataSet ds)
209         {
210             System.Windows.Forms.SaveFileDialog saveFileDlg=new System.Windows.Forms.SaveFileDialog(); 
211             saveFileDlg.DefaultExt="xml";
212             saveFileDlg.Filter= "xml文件 (*.xml)|*.xml";
213             if (saveFileDlg.ShowDialog() == System.Windows.Forms.DialogResult.OK) 
214                 doExportXML(ds,saveFileDlg.FileName);
215         }
216 
217         /**//// <summary>
218         /// 执行导出
219         /// </summary>
220         /// <param name="ds">要导出的DataSet</param>
221         /// <param name="strExcelFileName">要导出的XML文件名</param>
222         private void doExportXML(DataSet ds,string strXMLFileName)
223         {
224             try
225             {ds.WriteXml(strXMLFileName,System.Data.XmlWriteMode.WriteSchema );}
226             catch(Exception ex)
227             {System.Windows.Forms.MessageBox.Show(ex.Message,"Errol") ;}    
228         }
229 
230         #endregion
231 
232     
233     
234     }
235 

可能用进程的强制删除方法:kill()

 1 #region "强制结束Word进程(垃圾回收)" 
 2 /// <summary> 
 3 /// 强制结束Word进程(垃圾回收) 
 4 /// </summary> 
 5 public void KillWordProcess() 
 6 { 
 7 int ProceedingCount = 0; 
 8 try 
 9 { 
10 System.Diagnostics.Process [] ProceddingCon = System.Diagnostics.Process.GetProcesses(); 
11 foreach(System.Diagnostics.Process IsProcedding in ProceddingCon) 
12 { 
13 if(IsProcedding.ProcessName.ToUpper() == "WINWORD") 
14 { 
15 ProceedingCount += 1; 
16 IsProcedding.Kill(); 
17 } 
18 } 
19 } 
20 catch(System.Exception err) 
21 { 
22 MessageBox.Show(err.Message + "\r" +"(" + err.Source + ")" + "\r" + err.StackTrace); 
23 } 
24 } 
25 #endregion

关于Excel进程一直驻留的，参考：
http://support.microsoft.com/?scid=kb;zh-cn;317109&spid=1108&sid=152