如何将dataSet中的数据导入到Excel文件(*.xls)中???

N_ccw 2005-09-23 09:58:41
如何将dataSet中的数据导入到Excel文件(*.xls)中???
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N_ccw 2005-09-25
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谢谢上面的几位达人大哥
我的问题已经解决了
辛苦你们了
谢谢
zhaoliang_chen 2005-09-23
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public void ExportResult(DataSet ds)
{
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.Charset = "";
HttpContext.Current.Response.ContentType = "application/vnd.ms-excel";
StringWriter stringWrite = new StringWriter();
HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite);

DataGrid dg = new DataGrid();
dg.DataSource = ds.Tables[0];
dg.DataBind();
dg.RenderControl(htmlWrite);
HttpContext.Current.Response.AddHeader("content-disposition", "attachment; filename=result.xls");

HttpContext.Current.Response.Write(stringWrite.ToString());
HttpContext.Current.Response.End();
}

zxf_hay 2005-09-23
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using System;
using System.Data;
using System.Data.OleDb;
namespace GRIS.ExcelReprot
{
/// <summary>
/// ImportExportToExcel 的摘要说明。
/// </summary>
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";

}

#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;
}
#endregion

#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);


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,null);


//wkbNew.SaveAs strBookName


//excel.Save(strExcelFileName);
excel.Quit();
excel=null;

GC.Collect();//垃圾回收
}
#endregion

#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;
}

#endregion

#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") ;}
}

#endregion
}
}
dragonfly001 2005-09-23
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using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
//*************************************
public class DataSetToExcel
{
public DataSetToExcel(){}
public void Convert(DataSet oDS,HttpResponse Response)
{
Response.Clear();
Response.Charset = "";
Response.ContentType = "application/vnd.ms-excel";
System.IO.StringWriter oSW = new System.IO.StringWriter();
HtmlTextWriter oHW = new HtmlTextWriter(oSW);
DataGrid oDG = new DataGrid();
oDG.DataSource = oDS.Tables[0];
oDG.DataBind();
oDG.RenderControl(oHW);
Response.Write(oSW.ToString());
Response.Flush();
Response.Close();
}
}
//*********************************************************
調用這個類就OK了
zhongwanli 2005-09-23
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不太清楚,以前只写VBＡ，　估计思想和这个差不多
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Delphi快速导出数据到Excel
背景：今天要把DataSet导入Excel，查询以前的贴子，一部分用Ole，速度太慢， 一部分用ADO连接到Excel文件，也很慢，一气之下把DBGrigEh的导出部分改了出来， 欢迎大家指教、改进。 功能：将数据集的数据导入Excel; 用法：With ExportXls.Create(TDataSet(ADOQuery1)) do Try Save2File(SaveDialog1.FileName, True); finally Free; end; 作者：Caidao (核心代码来自Ehlib) 时间：2003-04-09 地点：汕头我演测试的代码：特点：一、不需安装Excel即可导出。三、最多可以导出多少条，我没试，我试了5万条没有问题，时间也就是只需1-5分钟（我电脑较慢）。使用方法(注：别忘了uses DBGridToExcel;)：procedure TForm1.btn7Click(Sender: TObject);begin With ExportXls.Create(dbgrd1.DataSource.DataSet) do Try dlgSave1.DefaultExt := '.xls'; dlgSave1.Filter := 'Microsoft Excel 文件|*.xls'; if dlgSave1.Execute then begin Save2File(dlgSave1.FileName, True); end; finally Free; end;end;
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