日期:2014-05-17  浏览次数:20476 次

GRIDVIEW的数据导出excel表
怎么样把Gridview的数据导出excel表

------解决方案--------------------
asp.net里导出excel表方法汇总 

//1、由dataset生成 
 
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; 
 
//定义表对象与行对像,同时用DataSet对其值进行初始化 
DataTable dt=ds.Tables[0]; 
DataRow[] myRow=dt.Select("");
// typeid=="1"时导出为EXCEL格式文件;typeid=="2"时导出为XML格式文件 
if(typeid=="1") 

//取得数据表各列标题,各标题之间以\t分割,最后一个列标题后加回车符 
for(i=0;i colHeaders+=dt.Columns[i].Caption.ToString()+"\t"; 
colHeaders +=dt.Columns[i].Caption.ToString() +"\n";
//向HTTP输出流中写入取得的数据信息 
resp.Write(colHeaders);
//逐行处理数据
foreach(DataRow row in myRow) 

//在当前行中,逐列获得数据,数据之间以\t分割,结束时加回车符\n 
for(i=0;i ls_item +=row[i].ToString() + "\t";
ls_item += row[i].ToString() +"\n"; 
//当前行数据写入HTTP输出流,并且置空ls_item以便下行数据
resp.Write(ls_item); 
ls_item=""; 


else 

if(typeid=="2") 
{
//从DataSet中直接导出XML数据并且写到HTTP输出流中 
resp.Write(ds.GetXml()); 
}

//写缓冲区中的数据到HTTP头文件中 
resp.End(); 
 
 

 
  
 

//2、由datagrid生成: 
 
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、这个用dataview ,代码好长 
 
public void OutputExcel(DataView dv,string str) 

// 
// TODO: 在此处添加构造函数逻辑 
// 
//dv为要输出到Excel的数据,str为标题名称 
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; 
 
// 
//取得标题 
// 
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;//设置标题格式为居中对齐