C# 操作excel和xml

需要添加COM组件 Interop.Excel.dll,Interop.Microsoft.Office.Core.dll

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Data.OleDb;

using System.Text;

using System.Drawing;

using System.IO;

using System.Runtime.InteropServices;

using Excel = Microsoft.Office.Interop.Excel;

using Microsoft.Office.Interop.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: 在此处添加构造函数逻辑

//

this.openFileDlg.DefaultExt = "xls";

this.openFileDlg.Filter = "Excel文件 (*.xls)|*.xls";

this.saveFileDlg.DefaultExt = "xls";

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

}

// 从Excel文件导入到DataSet#region 从Excel文件导入到DataSet

// /// <summary>

// /// 从Excel导入文件

// /// </summary>

// /// <param name="strExcelFileName">Excel文件名</param>

// /// <returns>返回DataSet</returns>

// public DataSet ImportFromExcel(string strExcelFileName)

// {

// return doImport(strExcelFileName);

// }

/// <summary>

/// 从选择的Excel文件导入

/// </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>

/// 从指定的Excel文件导入

/// </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>

/// 执行导入

/// </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;

}

//从DataSet到出到Excel#region 从DataSet到出到Excel

/// <summary>

/// 导出指定的Excel文件

/// </summary>

/// <param name="ds">要导出的DataSet</param>

/// <param name="strExcelFileName">要导出的Excel文件名</param>

public void ExportToExcel(DataSet ds, string strExcelFileName)

{

if (ds.Tables.Count == 0 || strExcelFileName == "") return;

doExport(ds, strExcelFileName);

}

/// <summary>

/// 导出用户选择的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>

/// 执行导出

/// </summary>

/// <param name="ds">要导出的DataSet</param>

/// <param name="strExcelFileName">要导出的文件名</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);

//对该死的提示进行处理

excel.AlertBeforeOverwriting = false;//一定要写不要会弹出修改的的提示

if (File.Exists(strExcelFileName+".XLS")) { File.Delete(strExcelFileName+".XLS"); }

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,true);

//excel.ActiveWorkbook.SaveAs(

//wkbNew.SaveAs strBookName

//excel.Save(strExcelFileName);

excel.Quit();

excel = null;

GC.Collect();//垃圾回收

}

//从XML导入到Dataset#region 从XML导入到Dataset

/// <summary>

/// 从选择的XML文件导入

/// </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>

/// 从指定的XML文件导入

/// </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;

}

//从DataSet导出到XML#region 从DataSet导出到XML

/// <summary>

/// 导出指定的XML文件

/// </summary>

/// <param name="ds">要导出的DataSet</param>

/// <param name="strXMLFileName">要导出的XML文件名</param>

public void ExportToXML(DataSet ds, string strXMLFileName)

{

if (ds.Tables.Count == 0 || strXMLFileName == "") return;

doExportXML(ds, strXMLFileName);

}

/// <summary>

/// 导出用户选择的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>

/// 执行导出

/// </summary>

/// <param name="ds">要导出的DataSet</param>

/// <param name="strExcelFileName">要导出的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"); }

}

}