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1、由dataset生成

代碼如下

public void CreateExcel(DataSet ds,string typeid,string FileName)

{

HttpResponse resp;

resp = Page.Response;

resp.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");

resp.AppendHeader("Content-Disposition", "attachment;filename=" + FileName);

string colHeaders= "", ls_item="";

int i=0;

//定義表對象與行對像，同時用DataSet對其值進行初始化

DataTable dt=ds.Tables[0];

DataRow[] myRow=dt.Select("");

// typeid=="1"時導出為EXCEL格式文件；typeid=="2"時導出為XML格式文件

if(typeid=="1")

{

//取得數據表各列標題，各標題之間以t分割，最后一個列標題后加回車符

for(i=0;i colHeaders+=dt.Columns[i].Caption.ToString()+"t";

colHeaders +=dt.Columns[i].Caption.ToString() +"n";

//向HTTP輸出流中寫入取得的數據信息

resp.Write(colHeaders);

//逐行處理數據

foreach(DataRow row in myRow)

{

//在當前行中，逐列獲得數據，數據之間以t分割，結束時加回車符n

for(i=0;i ls_item +=row[i].ToString() + "t";

ls_item += row[i].ToString() +"n";

//當前行數據寫入HTTP輸出流，并且置空ls_item以便下行數據

resp.Write(ls_item);

ls_item="";

}

}

else

{

if(typeid=="2")

{

//從DataSet中直接導出XML數據并且寫到HTTP輸出流中

resp.Write(ds.GetXml());

}

}

//寫緩沖區中的數據到HTTP頭文件中

resp.End();

}

2、由datagrid生成

代碼如下

public void ToExcel(System.Web.UI.Control ctl)

{

HttpContext.Current.Response.AppendHeader("Content-Disposition","attachment;filename=Excel.xls");

HttpContext.Current.Response.Charset ="UTF-8";

HttpContext.Current.Response.ContentEncoding =System.Text.Encoding.Default;

HttpContext.Current.Response.ContentType ="application/ms-excel";//image/JPEG;text/HTML;image/GIF;vnd.ms-excel/msword

ctl.Page.EnableViewState =false;

System.IO.StringWriter tw = new System.IO.StringWriter() ;

System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter (tw);

ctl.RenderControl(hw);

HttpContext.Current.Response.Write(tw.ToString());

HttpContext.Current.Response.End();

}

用法：ToExcel(datagrid1);

3、這個用dataview

代碼如下

public void OutputExcel(DataView dv,string str)

{

//

// TODO: 在此處添加構造函數邏輯

//

//dv為要輸出到Excel的數據，str為標題名稱

GC.Collect();

Application excel;// = new Application();

int rowIndex=4;

int colIndex=1;

_Workbook xBk;

_Worksheet xSt;

excel= new ApplicationClass();

xBk = excel.Workbooks.Add(true);

xSt = (_Worksheet)xBk.ActiveSheet;

//

//取得標題

//

foreach(DataColumn col in dv.Table.Columns)

{

colIndex++;

excel.Cells[4,colIndex] = col.ColumnName;

xSt.get_Range(excel.Cells[4,colIndex],excel.Cells[4,colIndex]).HorizontalAlignment = XlVAlign.xlVAlignCenter;//設置標題格式為居中對齊

}

//

//取得表格中的數據

//

foreach(DataRowView row in dv)

{

rowIndex ++;

colIndex = 1;

foreach(DataColumn col in dv.Table.Columns)

{

colIndex ++;

if(col.DataType == System.Type.GetType("System.DateTime"))

{

excel.Cells[rowIndex,colIndex] = (Convert.ToDateTime(row[col.ColumnName].ToString())).ToString("yyyy-MM-dd");

xSt.get_Range(excel.Cells[rowIndex,colIndex],excel.Cells[rowIndex,colIndex]).HorizontalAlignment = XlVAlign.xlVAlignCenter;//設置日期型的字段格式為居中對齊

}

else

if(col.DataType == System.Type.GetType("System.String"))

{

excel.Cells[rowIndex,colIndex] = "'"+row[col.ColumnName].ToString();

xSt.get_Range(excel.Cells[rowIndex,colIndex],excel.Cells[rowIndex,colIndex]).HorizontalAlignment = XlVAlign.xlVAlignCenter;//設置字符型的字段格式為居中對齊

}

else

{

excel.Cells[rowIndex,colIndex] = row[col.ColumnName].ToString();

}

}

}

//

//加載一個合計行

//

int rowSum = rowIndex + 1;

int colSum = 2;

excel.Cells[rowSum,2] = "合計";

xSt.get_Range(excel.Cells[rowSum,2],excel.Cells[rowSum,2]).HorizontalAlignment = XlHAlign.xlHAlignCenter;

//

//設置選中的部分的顏色

//

xSt.get_Range(excel.Cells[rowSum,colSum],excel.Cells[rowSum,colIndex]).Select();

xSt.get_Range(excel.Cells[rowSum,colSum],excel.Cells[rowSum,colIndex]).Interior.ColorIndex = 19;//設置為淺黃色，共計有56種

//

//取得整個報表的標題

//

excel.Cells[2,2] = str;

//

//設置整個報表的標題格式

//

xSt.get_Range(excel.Cells[2,2],excel.Cells[2,2]).Font.Bold = true;

xSt.get_Range(excel.Cells[2,2],excel.Cells[2,2]).Font.Size = 22;

//

//設置報表表格為最適應寬度

//

xSt.get_Range(excel.Cells[4,2],excel.Cells[rowSum,colIndex]).Select();

xSt.get_Range(excel.Cells[4,2],excel.Cells[rowSum,colIndex]).Columns.AutoFit();

//

//設置整個報表的標題為跨列居中

//

xSt.get_Range(excel.Cells[2,2],excel.Cells[2,colIndex]).Select();

xSt.get_Range(excel.Cells[2,2],excel.Cells[2,colIndex]).HorizontalAlignment = XlHAlign.xlHAlignCenterAcrossSelection;

//

//繪制邊框

//

xSt.get_Range(excel.Cells[4,2],excel.Cells[rowSum,colIndex]).Borders.LineStyle = 1;

xSt.get_Range(excel.Cells[4,2],excel.Cells[rowSum,2]).Borders[XlBordersIndex.xlEdgeLeft].Weight = XlBorderWeight.xlThick;//設置左邊線加粗

xSt.get_Range(excel.Cells[4,2],excel.Cells[4,colIndex]).Borders[XlBordersIndex.xlEdgeTop].Weight = XlBorderWeight.xlThick;//設置上邊線加粗

xSt.get_Range(excel.Cells[4,colIndex],excel.Cells[rowSum,colIndex]).Borders[XlBordersIndex.xlEdgeRight].Weight = XlBorderWeight.xlThick;//設置右邊線加粗

xSt.get_Range(excel.Cells[rowSum,2],excel.Cells[rowSum,colIndex]).Borders[XlBordersIndex.xlEdgeBottom].Weight = XlBorderWeight.xlThick;//設置下邊線加粗

//

//顯示效果

//

excel.Visible=true;

//xSt.Export(Server.MapPath(".")+"\"+this.xlfile.Text+".xls",

SheetExportActionEnum.ssExportActionNone,Microsoft.Office.Interop.OWC.SheetExportFormat.ssExportHTML);

xBk.SaveCopyAs(Server.MapPath(".")+"\"+this.xlfile.Text+".xls");

ds = null;

xBk.Close(false, null,null);

excel.Quit();

System.Runtime.InteropServices.Marshal.ReleaseComObject(xBk);

System.Runtime.InteropServices.Marshal.ReleaseComObject(excel);

System.Runtime.InteropServices.Marshal.ReleaseComObject(xSt);

xBk = null;

excel = null;

xSt = null;

GC.Collect();

string path = Server.MapPath(this.xlfile.Text+".xls");

System.IO.FileInfo file = new System.IO.FileInfo(path);

Response.Clear();

Response.Charset="GB2312";

Response.ContentEncoding=System.Text.Encoding.UTF8;

// 添加頭信息，

Response.AddHeader("Content-Disposition", "attachment; filename=" + Server.UrlEncode(file.Name));

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