数据导入excel的问题

Question

Response.Clear(); 
Response.Buffer= true; 
Response.Charset="GB2312";    
Response.AppendHeader("Content-Disposition","attachment;filename=FileName.xls"); 
Response.ContentEncoding=System.Text.Encoding.Unicode;//设置输出流为简体中文
Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。 
this.EnableViewState = false;    
System.Globalization.CultureInfo myCItrad = new System.Globalization.CultureInfo("ZH-CN",true);
System.IO.StringWriter oStringWriter = new System.IO.StringWriter(); 
System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
Tdt.RenderControl(oHtmlTextWriter); 
Response.Write(oStringWriter.ToString());
Response.End();
Response.Buffer=false;
Response.Clear();
这段代码为什么可以在客户端弹出保存的对话框，是哪个句子在起作用，请高手指点

Answer 1

是ie的设置问题.
例如你直接在ie打开
www.demo.com/demo.xls
一样会弹出是否保存.

Answer 2

那这个程序要它弹出对话框该怎么改啊
                           DataTable Tdt=(DataTable)Session["Table"];
Tdt.Columns.Add(new DataColumn("number"));
for(int i=0;i<Tdt.Rows.Count;i++)
{
   Tdt.Rows[i]["number"]=i;
}
Tdt.DefaultView.RowFilter="Exam_flag='1'";
Tdt.AcceptChanges();
string strFile="";
strFile=strFile+"LogBackUp";
strFile=strFile+DateTime.Now.ToString("yyyyMMddhhmmss");
strFile=strFile+".xls";
string path=Server.MapPath(strFile);
System.IO.FileStream fs=new FileStream(path,System.IO.FileMode.Create,System.IO.FileAccess.Write);
StreamWriter sw=new StreamWriter(fs,new System.Text.UnicodeEncoding());
//画表头
string[] ColName=new string[6];
ColName[0]="体检编号";
ColName[1]="姓名";
ColName[2]="公司姓名";
ColName[3]="性别";
ColName[4]="年龄";
ColName[5]="体检日期";
            string[] ColEName=new string[6];
            ColEName[0]="exam_no";
            ColEName[1]="name";
ColEName[2]="corp_name";
ColEName[3]="sex_name";
ColEName[4]="age";
ColEName[5]="exam_date";
int number_no=0;
for(int i=0;i<7;i++)
{
if(i==0)
{
sw.Write(Tdt.Columns["number"].ColumnName="序号");
sw.Write("\t");
}
else
{
   string Col=ColEName[number_no];
   sw.Write(Tdt.Columns[Col].ColumnName=ColName[number_no]);
   number_no++;
   sw.Write("\t");
}

}
sw.WriteLine("");
//画表体
for(int i=0;i<Tdt.Rows.Count;i++)
{
sw.Write(Tdt.Rows[i]["序号"].ToString());
sw.Write("\t");
sw.Write(Tdt.Rows[i]["体检编号"].ToString());
sw.Write("\t");
sw.Write(Tdt.Rows[i]["姓名"].ToString());
sw.Write("\t");                        
sw.Write(Tdt.Rows[i]["公司姓名"].ToString());
sw.Write("\t");
sw.Write(Tdt.Rows[i]["性别"].ToString());
sw.Write("\t");
sw.Write(Tdt.Rows[i]["年龄"].ToString());
sw.Write("\t");
sw.Write(Tdt.Rows[i]["体检日期"].ToString()); 
sw.WriteLine("");
}
sw.Flush();
sw.Close();
Tdt.Clear();
Tdt.Dispose();
Session["Table"]=null;
            cmd_excel.Enabled=false;
System.IO.StringWriter oStringWriter = new System.IO.StringWriter();
          }

Answer 3

Response.Clear(); 
Response.Buffer= true; 
Response.Charset="GB2312";    
Response.AppendHeader("Content-Disposition","attachment;filename=FileName.xls"); 
Response.ContentEncoding=System.Text.Encoding.Unicode;//设置输出流为简体中文
Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。 
this.EnableViewState = false;    
System.Globalization.CultureInfo myCItrad = new System.Globalization.CultureInfo("ZH-CN",true);
    DataTable Tdt=(DataTable)Session["Table"];
Tdt.Columns.Add(new DataColumn("number"));
for(int i=0;i<Tdt.Rows.Count;i++)
{
   Tdt.Rows[i]["number"]=i;
}
Tdt.DefaultView.RowFilter="Exam_flag='1'";
Tdt.AcceptChanges();
string strFile="";
strFile=strFile+"LogBackUp";
strFile=strFile+DateTime.Now.ToString("yyyyMMddhhmmss");
strFile=strFile+".xls";
string path=Server.MapPath(strFile);
System.IO.FileStream fs=new FileStream(path,System.IO.FileMode.Create,System.IO.FileAccess.Write);
StreamWriter sw=new StreamWriter(fs,new System.Text.UnicodeEncoding());
//画表头
string[] ColName=new string[6];
ColName[0]="体检编号";
ColName[1]="姓名";
ColName[2]="公司姓名";
ColName[3]="性别";
ColName[4]="年龄";
ColName[5]="体检日期";
            string[] ColEName=new string[6];
            ColEName[0]="exam_no";
            ColEName[1]="name";
ColEName[2]="corp_name";
ColEName[3]="sex_name";
ColEName[4]="age";
ColEName[5]="exam_date";
int number_no=0;
for(int i=0;i<7;i++)
{
if(i==0)
{
sw.Write(Tdt.Columns["number"].ColumnName="序号");
sw.Write("\t");
}
else
{
   string Col=ColEName[number_no];
   sw.Write(Tdt.Columns[Col].ColumnName=ColName[number_no]);
   number_no++;
   sw.Write("\t");
}

}
sw.WriteLine("");
//画表体
for(int i=0;i<Tdt.Rows.Count;i++)
{
sw.Write(Tdt.Rows[i]["序号"].ToString());
sw.Write("\t");
sw.Write(Tdt.Rows[i]["体检编号"].ToString());
sw.Write("\t");
sw.Write(Tdt.Rows[i]["姓名"].ToString());
sw.Write("\t");                        
sw.Write(Tdt.Rows[i]["公司姓名"].ToString());
sw.Write("\t");
sw.Write(Tdt.Rows[i]["性别"].ToString());
sw.Write("\t");
sw.Write(Tdt.Rows[i]["年龄"].ToString());
sw.Write("\t");
sw.Write(Tdt.Rows[i]["体检日期"].ToString()); 
sw.WriteLine("");
}
sw.Flush();
sw.Close();
Tdt.Clear();
Tdt.Dispose();
Session["Table"]=null;
            cmd_excel.Enabled=false;
System.IO.StringWriter oStringWriter = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
Tdt.RenderControl(oHtmlTextWriter); 
Response.Write(oStringWriter.ToString());
Response.End();
Response.Buffer=false;
Response.Clear();

Answer 4

3楼的那位大哥你写东西不对，按你那样就是把2段程序+，生成2个.xsl文件有什么意义啊

Answer 5

Tdt.RenderControl(oHtmlTextWriter); 
这个地方
tdt其实是RenderControl(oHtmlTextWriter); 别搞错了，我就是不想从datagrid导到execl，我要直接从datatable导到excel

Answer 6

Tdt.RenderControl(oHtmlTextWriter); 
这个地方
tdt其实是datagrid.RenderControl(oHtmlTextWriter); 别搞错了，我就是不想从datagrid导到execl，我要直接从datatable导到excel