导出各种格式文档

1、GridView导出到Excel

    //到出Excel
    protected void btnExcel_Click(object sender, EventArgs e)
    {
        ExportGridViewToExcel(Response, GridView1,"MyExcel_Name");
    }
   
    //到出excel
    public void ExportGridViewToExcel(HttpResponse response, Control gv, String excelFileName)
    {
        response.Clear();
        response.Buffer = true;
        response.Charset = "UTF-8";
        response.AppendHeader("Content-Disposition", string.Format("attachment;filename={0}.xls", excelFileName));
        response.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8");
        response.ContentType = "application/ms-excel";

        System.Globalization.CultureInfo myCItrad = new System.Globalization.CultureInfo("ZH-CN", true);
        System.IO.StringWriter oStringWriter = new System.IO.StringWriter(myCItrad);
        System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);

        GridView1.AllowPaging = false;//清除分页

        //GridView1.AllowSorting = false; //清除排序     
        //SetReport();
        //控制GridView导出Excel后的样式
        this.GridView1.GridLines = GridLines.Both;
        this.GridView1.RenderControl(oHtmlTextWriter);
      
        Response.Output.Write(oStringWriter.ToString());
        Response.Flush();
        Response.End();
        //GridView1.AllowSorting = true; //恢复排序   
        GridView1.AllowPaging = true;  //恢复排序
        //SetReport(); //再次绑定
    }

2、GridView导出到Xml

protected void ConvertToXmlButton_Click(object sender, EventArgs e)
    {
        string cn, cmd, user_id;
        cn = "data source=192.168.1.1;User ID=sa;Password=123;database=database_demo";
        cmd = "select * from table_demo";
        user_id = Session["User_id"].ToString();//只是显示下载时XML文档的名字,例：123_201107140901.xml

        ToXml(cn, cmd, user_id);
    }
    public void ToXml(string cn, string cmd, string user_id)
    {
        XmlWriterSettings settings = new XmlWriterSettings();
        settings.Indent = true;
        StringBuilder sb = new StringBuilder();
        XmlWriter writer = XmlWriter.Create(sb, settings);
        writer.WriteProcessingInstruction("xml", "version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"");
        ds.WriteXml(writer, XmlWriteMode.DiffGram);//这个ds是要导出的DataSet
        HttpContext.Current.Response.Charset = "UTF-8";
        HttpContext.Current.Response.ContentEncoding = Encoding.UTF8;
        HttpContext.Current.Response.ContentType = "application/xml";
        HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + Session["User_id"].ToString() + "_" + string.Format("{0:yyyyMMdd}", DateTime.Today) + string.Format("{0:00}", DateTime.Now.Hour) + string.Format("{0:00}", DateTime.Now.Minute) + ".xml");
        HttpContext.Current.Response.Write(sb.ToString());
        HttpContext.Current.Response.End();
    }

3、导出到CSV

    protected void ConvertToCsv_Click(object sender, EventArgs e)
    {
        string cn, cmd, user_id;
        cn = "data source=198.168.1.1;User ID=sa;Password=123;database=database_demo";
        cmd = "select * from table_demo";
        user_id = Session["User_id"].ToString();

        ToCsv(cn, cmd, user_id);
    }
    public void ToCsv(string cnstring, string cmdstring, string user_id)
    {
        string csv_FileName = user_id + "_" + string.Format("{0:yyyyMMdd}", DateTime.Today) + string.Format("{0:00}", DateTime.Now.Hour) + string.Format("{0:00}", DateTime.Now.Minute);
        string fileContent = String.Empty;
        foreach (DataRow dr in ds.Tables[0].Rows)//ds是要导出到CSV文件的DataSet
        {
            foreach (DataColumn dc in ds.Tables[0].Columns)
            {
                fileContent += dr[dc].ToString() + ",";
            }
            fileContent += "\r\n";
        }
        Response.AddHeader("content-disposition", "attachment;filename=" + HttpUtility.UrlEncode(csv_FileName + ".csv"));
        Response.ContentType = "csv/plain";
        Response.ContentEncoding = Encoding.GetEncoding("BIG5");
        Response.Write(fileContent);
        Response.End();
    }

4、导出到TXT

protected void Button_txtDl_Click(object sender, EventArgs e)
    {
        string cn, cmd, user_id;
        cn = "data source=192.168.1.1;User ID=sa;Password=123;database=database_demo";
        cmd = "select * from table_demo";
        user_id = Session["User_id"].ToString();
        Totxt(cn, cmd, user_id);
    }
    public void Totxt(string cnstring, string cmdstring, string user_id)
    {
        string csv_FileName = user_id + "_" + string.Format("{0:yyyyMMdd}", DateTime.Today) + string.Format("{0:00}", DateTime.Now.Hour) + string.Format("{0:00}", DateTime.Now.Minute);
        string fileContent = String.Empty;
        foreach (DataRow dr in ds.Tables[0].Rows)//ds是DataSet,即要导出的数据
        {
            foreach (DataColumn dc in ds.Tables[0].Columns)
            {
                fileContent += dr[dc].ToString() + ",";
            }
            fileContent += "\r\n";
        }
        Response.AddHeader("content-disposition", "attachment;filename=" + HttpUtility.UrlEncode(csv_FileName + ".txt"));
        Response.ContentType = "txt/plain";
        Response.ContentEncoding = Encoding.GetEncoding("BIG5");
        Response.Write(fileContent);
        Response.End();
    }