public void CreateExcel(DataSet ds, string typeid, stringFileName)
{
HttpResponse resp;
resp =Page.Response;
resp.ContentEncoding =System.Text.Encoding.GetEncoding("GB2312");
resp.AppendHeader("Content-Disposition", "attachment;filename=" +FileName);
stringcolHeaders = "", ls_item = "";
int i =0;
//定义表对象和行对像,同时用DataSet对其值进行初始化
DataTabledt = ds.Tables[0];
DataRow[]myRow = dt.Select("");
//typeid=="1"时导出为EXCEL格式文档;typeid=="2"时导出为XML格式文档
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< dt.Columns.Count; i++)
{
if (i == dt.Columns.Count - 1)
{
colHeaders+= dt.Columns[i].Caption.ToString() + "\n";
}
else
{
colHeaders+= dt.Columns[i].Caption.ToString() + "\t";
}
}
//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 inmyRow)
{
//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 < dt.Columns.Count;i++)
{
if (i ==dt.Columns.Count - 1)
{
ls_item += row[i].ToString()+ "\n";
}
else
{
ls_item += row[i].ToString()+ "\t";
}
}
//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头文档中
resp.End();
}