C#操作Excel!

????public?class?ImportExportToExcel
????{
????????private?string?strConn?;
????????
????????private?System.Windows.Forms.OpenFileDialog?openFileDlg=new?System.Windows.Forms.OpenFileDialog();
????????private?System.Windows.Forms.SaveFileDialog?saveFileDlg=new?System.Windows.Forms.SaveFileDialog();??????
????????
????????public?ImportExportToExcel()
????????{
????????????//
????????????//?TODO:?在此處添加構造函數邏輯
????????????//
????????????this.openFileDlg.DefaultExt?=?"xls";
????????????this.openFileDlg.Filter?=?"Excel文件?(*.xls)|*.xls";

????????????this.saveFileDlg.DefaultExt="xls";
????????????this.saveFileDlg.Filter=?"Excel文件?(*.xls)|*.xls";

????????}

????????從Excel文件導入到DataSet#region?從Excel文件導入到DataSet
????????//????????///?<summary>
????????//????????///?從Excel導入文件
????????//????????///?</summary>
????????//????????///?<param?name="strExcelFileName">Excel文件名</param>
????????//????????///?<returns>返回DataSet</returns>
????????//????????public?DataSet?ImportFromExcel(string?strExcelFileName)
????????//????????{
????????//????????????return?doImport(strExcelFileName);
????????//????????}
????????/**////?<summary>
????????///?從選擇的Excel文件導入
????????///?</summary>
????????///?<returns>DataSet</returns>
????????public?DataSet?ImportFromExcel()
????????{
????????????DataSet?ds=new?DataSet();
????????????if?(openFileDlg.ShowDialog()?==?System.Windows.Forms.DialogResult.OK)?
????????????????ds=doImport(openFileDlg.FileName);
????????????return?ds;
????????}
????????/**////?<summary>
????????///?從指定的Excel文件導入
????????///?</summary>
????????///?<param?name="strFileName">Excel文件名</param>
????????///?<returns></returns>
????????public?DataSet?ImportFromExcel(string?strFileName)
????????{
????????????DataSet?ds=new?DataSet();
????????????ds=doImport(strFileName);
????????????return?ds;
????????}
????????/**////?<summary>
????????///?執行導入
????????///?</summary>
????????///?<param?name="strFileName">文件名</param>
????????///?<returns>DataSet</returns>
????????private?DataSet?doImport(string?strFileName)
????????{
????????????if?(strFileName=="")?return?null;
??????????????
????????????strConn?=?"Provider=Microsoft.Jet.OLEDB.4.0;"?+
????????????????"Data?Source="?+??strFileName?+?";"?+
????????????????"Extended?Properties=Excel?8.0;";
????????????OleDbDataAdapter?ExcelDA?=?new?OleDbDataAdapter("SELECT?*?FROM?[Sheet1$]",?strConn);

????????????DataSet?ExcelDs?=?new?DataSet();
????????????try
????????????{
????????????????ExcelDA.Fill(ExcelDs,?"ExcelInfo");
????????????????
????????????}
????????????catch(Exception?err)
????????????{
????????????????System.Console.WriteLine(?err.ToString()?);
????????????}
????????????return?ExcelDs;
????????????
????????????
????????
????????}
????????#endregion

????????從DataSet到出到Excel#region?從DataSet到出到Excel
????????/**////?<summary>
????????///?導出指定的Excel文件
????????///?</summary>
????????///?<param?name="ds">要導出的DataSet</param>
????????///?<param?name="strExcelFileName">要導出的Excel文件名</param>
????????public?void?ExportToExcel(DataSet?ds,string?strExcelFileName)
????????{
????????????if?(ds.Tables.Count==0?||?strExcelFileName=="")?return;
????????????doExport(ds,strExcelFileName);
????

????????}
????????/**////?<summary>
????????///?導出用戶選擇的Excel文件
????????///?</summary>
????????///?<param?name="ds">DataSet</param>
????????public?void?ExportToExcel(DataSet?ds)
????????{
????????????if?(saveFileDlg.ShowDialog()?==?System.Windows.Forms.DialogResult.OK)?
????????????????doExport(ds,saveFileDlg.FileName);
????????????
????????}
????????/**////?<summary>
????????///?執行導出
????????///?</summary>
????????///?<param?name="ds">要導出的DataSet</param>
????????///?<param?name="strExcelFileName">要導出的文件名</param>
????????private?void?doExport(DataSet?ds,string?strExcelFileName)
????????{
????????????
????????????Excel.Application?excel=?new?Excel.Application();
????????????
????????????//????????????Excel.Workbook?obj=new?Excel.WorkbookClass();
????????????//????????????obj.SaveAs("c:\zn.xls",Excel.XlFileFormat.xlExcel9795,null,null,false,false,Excel.XlSaveAsAccessMode.xlNoChange,null,null,null,null);

????????????int?rowIndex=1;
????????????int?colIndex=0;

????????????excel.Application.Workbooks.Add(true);
????????????
????
????????????System.Data.DataTable?table=ds.Tables[0]?;
????????????foreach(DataColumn?col?in?table.Columns)
????????????{
????????????????colIndex++;????
????????????????excel.Cells[1,colIndex]=col.ColumnName;????????????????
????????????}

????????????foreach(DataRow?row?in?table.Rows)
????????????{
????????????????rowIndex++;
????????????????colIndex=0;
????????????????foreach(DataColumn?col?in?table.Columns)
????????????????{
????????????????????colIndex++;
????????????????????excel.Cells[rowIndex,colIndex]=row[col.ColumnName].ToString();
????????????????}
????????????}
????????????excel.Visible=false;????
????????????excel.Sheets[0]?=?"sss";
????????????excel.ActiveWorkbook.SaveAs(strExcelFileName+".XLS",Excel.XlFileFormat.xlExcel9795,null,null,false,false,Excel.XlSaveAsAccessMode.xlNoChange,null,null,null,null);
????????????
????????????
????????????//wkbNew.SaveAs?strBookName


????????????//excel.Save(strExcelFileName);
????????????excel.Quit();
????????????excel=null;
????????????
????????????GC.Collect();//垃圾回收
????????}
????????#endregion

????????從XML導入到Dataset#region?從XML導入到Dataset

????????/**////?<summary>
????????///?從選擇的XML文件導入
????????///?</summary>
????????///?<returns>DataSet</returns>
????????public?DataSet?ImportFromXML()
????????{
????????????DataSet?ds=new?DataSet();
????????????System.Windows.Forms.OpenFileDialog?openFileDlg=new?System.Windows.Forms.OpenFileDialog();
????????????openFileDlg.DefaultExt="xml";
????????????openFileDlg.Filter=?"xml文件?(*.xml)|*.xml";
????????????if?(openFileDlg.ShowDialog()?==?System.Windows.Forms.DialogResult.OK)?
????????????????try{ds.ReadXml(openFileDlg.FileName,System.Data.XmlReadMode.ReadSchema);}
????????????????catch{}
????????????return?ds;
????????}
????????/**////?<summary>
????????///?從指定的XML文件導入
????????///?</summary>
????????///?<param?name="strFileName">XML文件名</param>
????????///?<returns></returns>
????????public?DataSet?ImportFromXML(string?strFileName)
????????{
????????????if?(strFileName=="")
????????????????return?null;
????????????DataSet?ds=new?DataSet();
????????????try{ds.ReadXml(strFileName,System.Data.XmlReadMode.ReadSchema);}
????????????catch{}
????????????return?ds;
????????}
????????
????????#endregion

????????從DataSet導出到XML#region?從DataSet導出到XML
????????/**////?<summary>
????????///?導出指定的XML文件
????????///?</summary>
????????///?<param?name="ds">要導出的DataSet</param>
????????///?<param?name="strXMLFileName">要導出的XML文件名</param>
????????public?void?ExportToXML(DataSet?ds,string?strXMLFileName)
????????{
????????????if?(ds.Tables.Count==0?||?strXMLFileName=="")?return;
????????????doExportXML(ds,strXMLFileName);
????????}
????????/**////?<summary>
????????///?導出用戶選擇的XML文件
????????///?</summary>
????????///?<param?name="ds">DataSet</param>
????????public?void?ExportToXML(DataSet?ds)
????????{
????????????System.Windows.Forms.SaveFileDialog?saveFileDlg=new?System.Windows.Forms.SaveFileDialog();?
????????????saveFileDlg.DefaultExt="xml";
????????????saveFileDlg.Filter=?"xml文件?(*.xml)|*.xml";
????????????if?(saveFileDlg.ShowDialog()?==?System.Windows.Forms.DialogResult.OK)?
????????????????doExportXML(ds,saveFileDlg.FileName);
????????}

????????/**////?<summary>
????????///?執行導出
????????///?</summary>
????????///?<param?name="ds">要導出的DataSet</param>
????????///?<param?name="strExcelFileName">要導出的XML文件名</param>
????????private?void?doExportXML(DataSet?ds,string?strXMLFileName)
????????{
????????????try
????????????{ds.WriteXml(strXMLFileName,System.Data.XmlWriteMode.WriteSchema?);}
????????????catch(Exception?ex)
????????????{System.Windows.Forms.MessageBox.Show(ex.Message,"Errol")?;}????
????????}

????????#endregion

????
????
????}

轉載于:https://www.cnblogs.com/zpc870921/archive/2012/11/11/2765151.html

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