ASP.NET输出EXCEL表格的几种方法（总结修改）

浏览数：28 / 时间：2015年06月09日

这几天要从数据库导出EXCEL表格，就找了N钟方法，经测试，下面的方法比较的好用一点。都是经过输入DataTable而导出的。不过导出的EXCEL都不是正规的EXCEL格式，只能说是HTML格式的，导出的再导入进数据库就会出现问题了。想导入的话用EXCEL打开另存为EXCEL格式就好了

1.利用DataRow直接输出，经测试，没有乱码。
        public bool LendOutExcel(string strFileName, DataTable DT)
        {
            try
            {
                //清除Response缓存内容
                HttpContext.Current.Response.Clear();
                //缓存输出，并在完成整个响应之后将其发送
                HttpContext.Current.Response.Buffer = true;
                //strFileName指定输出文件的名称，注意其扩展名和指定文件类型相符，可以为：.doc .xls .txt .htm
                strFileName = strFileName + ".xls";
                //设置输出流的HTPP字符集，确定字符的编码格式
                //HttpContext.Current.Response.Charset = "UTF-8";
                HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
                //下面这行很重要， attachment 参数表示作为附件下载，您可以改成 online在线打开
                HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(strFileName));
                //Response.ContentType指定文件类型.可以为application/ms-excel,application/ms-word,application/ms-txt,application/ms-html或其他浏览器可直接支持文档
                HttpContext.Current.Response.ContentType = "application/ms-excel";

                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
                DataRow[] myRow = DT.Select("");
                //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 - 1; 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
                HttpContext.Current.Response.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 < DT.Columns.Count - 1; 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
                    HttpContext.Current.Response.Write(ls_item);
                    ls_item = "";
                }
                //写缓冲区中的数据到HTTP头文件中
                HttpContext.Current.Response.End();

                return true;
            }
            catch
            {
                return false;
            }
        }

输出为：学院活动表.xls

活动名称活动时间活动地点发起人承担人批准人活动概况参与人备注
第5次9                                              2008-7-27 0:00:00 HBU_ 1 shenxian_ 1   jiaoren there where is a will,there is a way ren ren ren ren people haha,hehe,xixi
第5次8                                              2008-7-27 0:00:00 HBU_ 2 shenxian_ 2 xianren jiaoren there where is a will,there is a way ren ren ren ren people haha,hehe,xixi
第5次7                                              2008-7-27 0:00:00 HBU_ 3 shenxian_ 3 xianren jiaoren there where is a will,there is a way ren ren ren ren people haha,hehe,xixi
第5次6                                              2008-7-27 0:00:00 HBU_ 4 shenxian_ 4 xianren jiaoren there where is a will,there is a way ren ren ren ren people haha,hehe,xixi
第5次5                                              2008-7-27 0:00:00 HBU_ 5 shenxian_ 5 xianren jiaoren there where is a will,there is a way ren ren ren ren people haha,hehe,xixi
第5次9                                              2008-7-27 0:00:00 HBU_ 1 shenxian_ 1   jiaoren there where is a will,there is a way ren ren ren ren people haha,hehe,xixi
第5次8                                              2008-7-27 0:00:00 HBU_ 2 shenxian_ 2 xianren jiaoren there where is a will,there is a way ren ren ren ren people haha,hehe,xixi
第5次7                                              2008-7-27 0:00:00 HBU_ 3 shenxian_ 3 xianren jiaoren there where is a will,there is a way ren ren ren ren people haha,hehe,xixi
第5次6                                              2008-7-27 0:00:00 HBU_ 4 shenxian_ 4 xianren jiaoren there where is a will,there is a way ren ren ren ren people haha,hehe,xixi
第5次5                                              2008-7-27 0:00:00 HBU_ 5 shenxian_ 5 xianren jiaoren there where is a will,there is a way ren ren ren ren people haha,hehe,xixi

2.利用GridView输出，经测试，有的输出有乱码
        public bool LendOutExcel(string strFileName, DataTable DT)
        {
            try
            {
                //清除Response缓存内容
                HttpContext.Current.Response.Clear();
                //缓存输出，并在完成整个响应之后将其发送
                HttpContext.Current.Response.Buffer = true;
                //strFileName指定输出文件的名称，注意其扩展名和指定文件类型相符，可以为：.doc .xls .txt .htm
                strFileName = strFileName + ".xls";
                //设置输出流的HTPP字符集，确定字符的编码格式
                //HttpContext.Current.Response.Charset = "UTF-8";
                HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
                //下面这行很重要， attachment 参数表示作为附件下载，您可以改成 online在线打开
                HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(strFileName));
                //Response.ContentType指定文件类型.可以为application/ms-excel,application/ms-word,application/ms-txt,application/ms-html或其他浏览器可直接支持文档　
                HttpContext.Current.Response.ContentType = "application/ms-excel";

                //用GridView输出
                GridView dv = new GridView();
                dv.DataSource = DT;
                dv.DataBind();
                try
                {
                    dv.Page.EnableViewState = false;
                }
                catch
                { }
                System.IO.StringWriter swBody = new System.IO.StringWriter();
                System.Web.UI.HtmlTextWriter hwBody = new System.Web.UI.HtmlTextWriter(swBody);
                //dv表示输出GridView，你也可以绑定datagrid,或其他支持obj.RenderControl()属性的控件
                dv.RenderControl(hwBody);
                //消除乱码特别设定，非常规方法
                string strExcel = "";
                strExcel = "";
                strExcel += hwBody.InnerWriter.ToString();
                HttpContext.Current.Response.Write(strExcel);
                HttpContext.Current.Response.End();

                return true;
            }
            catch
            {
                return false;
            }
        }

输出为：工作表.xls
<div>
<table cellspacing="0" rules="all" border="1" style="border-collapse:collapse;">
   <tr>
    <th scope="col">课程编号</th><th scope="col">课程名称</th><th scope="col">课序号</th><th scope="col">任课教师</th>
   </tr><tr>
    <td>ASP.NET-0</td><td>ASP.NET</td><td>0</td><td>shenxian</td>
   </tr><tr>
    <td>VB-0</td><td>VB</td><td>0</td><td>任志波</td>
   </tr><tr>
    <td>操作系统-0</td><td>操作系统</td><td>0</td><td>郝杰</td>
   </tr><tr>
    <td>计算机网络-0</td><td>计算机网络</td><td>0</td><td>杨秀丹</td>
   </tr><tr>
    <td>数据库-0</td><td>数据库</td><td>0</td><td>郝杰</td>
   </tr><tr>
    <td>数据库应用技术-0</td><td>数据库应用技术</td><td>0</td><td>wjy</td>
   </tr><tr>
    <td>数据库应用技术-1</td><td>数据库应用技术</td><td>1</td><td>wjy</td>
   </tr>
</table>
</div>

3.利用DataGrid输出，导出没问题，有没有乱码的问题没注意

protected void btnLendIn_Click(object sender, EventArgs e)
    {
    DataTable dt = LIE.LendInDT();
    StringWriter stringWriter = new StringWriter();
    HtmlTextWriter htmlWriter = new HtmlTextWriter( stringWriter );
    DataGrid excel = new DataGrid();
    System.Web.UI.WebControls.TableItemStyle AlternatingStyle = new TableItemStyle();
    System.Web.UI.WebControls.TableItemStyle headerStyle = new TableItemStyle();
    System.Web.UI.WebControls.TableItemStyle itemStyle = new TableItemStyle();
    AlternatingStyle.BackColor = System.Drawing.Color.LightGray;
    headerStyle.BackColor =System.Drawing.Color.LightGray;
    headerStyle.Font.Bold = true;
    headerStyle.HorizontalAlign = System.Web.UI.WebControls.HorizontalAlign.Center;
    itemStyle.HorizontalAlign = System.Web.UI.WebControls.HorizontalAlign.Center;;

    excel.AlternatingItemStyle.MergeWith(AlternatingStyle);
    excel.HeaderStyle.MergeWith(headerStyle);
    excel.ItemStyle.MergeWith(itemStyle);
    excel.GridLines = GridLines.Both;
    excel.HeaderStyle.Font.Bold = true;
    excel.DataSource = dt.DefaultView;    //输出DataTable的内容
    excel.DataBind();
    excel.RenderControl(htmlWriter);

    string filestr ="d:\\1.xls";   //filePath是文件的路径
    int pos = filestr.LastIndexOf("\\");
    string file = filestr.Substring(0,pos);
    if( !Directory.Exists( file ) )
    {
     Directory.CreateDirectory(file);
    }
    System.IO.StreamWriter sw = new StreamWriter(filestr);
    sw.Write(stringWriter.ToString());
    sw.Close();
}

输出的内容为：1.xls
<table cellspacing="0" rules="all" border="1" style="border-collapse:collapse;">
<tr align="center" style="background-color:LightGrey;font-weight:bold;">
   <td>课程编号</td><td>课程名称</td><td>课序号</td><td>任课教师</td>
</tr><tr align="center">
   <td>ASP.NET-0</td><td>ASP.NET</td><td>0</td><td>shenxian</td>
</tr><tr align="center" style="background-color:LightGrey;">
   <td>VB-0</td><td>VB</td><td>0</td><td>任老师</td>
</tr><tr align="center">
   <td>操作系统-0</td><td>操作系统</td><td>0</td><td>郝老师</td>
</tr><tr align="center" style="background-color:LightGrey;">
   <td>计算机网络-0</td><td>计算机网络</td><td>0</td><td>杨老师</td>
</tr><tr align="center">
   <td>数据库-0</td><td>数据库</td><td>0</td><td>郝老师</td>
</tr><tr align="center" style="background-color:LightGrey;">
   <td>数据库应用技术-0</td><td>数据库应用技术</td><td>0</td><td>wjy</td>
</tr><tr align="center">
   <td>数据库应用技术-1</td><td>数据库应用技术</td><td>1</td><td>wjy</td>
</tr>
</table>