DataGrid导出EXCEL方法

DAL:

//产品信息导出——LPH

        public DataTable ExportRelease(string type)

        {

            string sql = "SELECT [ProductID],[BankName],[ProductName] ,[IsServiceEnt] ,[IsServiceTrade],[IsServiceIndividual],[IsServiceOT] ,
[ServiceOTDesc] ,[IsIndividual],[IsEnterpriseMF],[IsEnterpriseWS],[IsEnterpriseSR],[IsEnterpriseST],[IsEnterpriseOT],[EnterpriseOTDesc]
,[AgeLimit] ,[RegisterAddrType],[BusinessIncome] ,[TotalAssets] ,[NoGuaranty] ,[IsMortgageHS] ,[IsMortgageFB],[IsMortgageME] ,
[IsMortgageOT] ,[MortgageOTDesc] ,[IsHypoDR] ,[IsHypoWR],[IsHypoIP],[IsHypoAR],[IsHypoITP],[IsHypoOT],[HypoDesc],[IsGuaranteeInd]
,[IsGuaranteeEnt] ,[IsGuaranteeCom] ,[IsGuaranteeOT] ,[GuaranteeOTDesc] ,[LoanAmountUpper] ,[LoanAmountLower] ,
[LoanLimitUpper] ,[LoanLimitLower] ,[RepaymentType] ,[ReviewDate] ,[ProductDesc],[ProductDoc],[ProductURL] FROM [LoanProducts]
where IsDeleted=0 and CheckStatus=3";

                return base.SelectData(sql);

        }

BLL:

//产品信息导出——LPH

        protected DataTable ExportRelease(string type)

        {

            LP_CustomerDetailDAL dal = new LP_CustomerDetailDAL(CurrentTransaction);

            return dal.ExportRelease(type);

        }

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Data;

using TonkNet.BDA.LoanProduct.EL;

using System.Globalization;

using System.IO;

using System.Web.UI.WebControls.Adapters;

using System.Reflection;

public partial class Admin_BaseManager_Export_ExportMessage : BasePage

{

    protected void Page_Load(object sender, EventArgs e)

    {

    }

//产品信息导出

    protected void btnProduct_Click(object sender, EventArgs e)

    {

        System.Data.DataTable dt = (System.Data.DataTable)EventSubmit("TonkNet.BDA.LoanProduct.BLL.LoanProduct.LP_CustomerDetailBLL", "ExportRelease", new object[] { "" });

        ProductToExcel(dt, "产品信息导出列表" + DateTime.Now.ToString("yyyyMMddHHmmss") + ".xls");

    }

    /// <summary>

    /// 把datatable产品信息导出到excel中——LPH

    /// </summary>

    /// <param name="dt">DataTable</param>

    /// <param name="defaultFileName">默认保存文件名</param>

    protected void ProductToExcel(System.Data.DataTable dt, string defaultFileName)

    {

        DataGrid dgd = new DataGrid();

        dgd.AutoGenerateColumns = false;

        //添加字段

        BoundColumn ProductID = new BoundColumn();

        BoundColumn BankName = new BoundColumn();

        BoundColumn ProductName = new BoundColumn();

        BoundColumn IsServiceEnt = new BoundColumn();

        BoundColumn IsServiceTrade = new BoundColumn();

        BoundColumn IsServiceIndividual = new BoundColumn();

        BoundColumn ServiceOTDesc = new BoundColumn();

        BoundColumn IsIndividual = new BoundColumn();

        BoundColumn IsEnterpriseMF = new BoundColumn();

        BoundColumn IsEnterpriseWS = new BoundColumn();

        BoundColumn IsEnterpriseSR = new BoundColumn();

        BoundColumn IsEnterpriseST = new BoundColumn();

        BoundColumn EnterpriseOTDesc = new BoundColumn();

        BoundColumn AgeLimit = new BoundColumn();

        BoundColumn RegisterAddrType = new BoundColumn();

        BoundColumn BusinessIncome = new BoundColumn();

        BoundColumn TotalAssets = new BoundColumn();

        BoundColumn NoGuaranty = new BoundColumn();

        BoundColumn IsMortgageHS = new BoundColumn();

        BoundColumn IsMortgageFB = new BoundColumn();

        BoundColumn IsMortgageME = new BoundColumn();

        BoundColumn MortgageOTDesc = new BoundColumn();

        BoundColumn IsHypoDR = new BoundColumn();

        BoundColumn IsHypoWR = new BoundColumn();

        BoundColumn IsHypoIP = new BoundColumn();

        BoundColumn IsHypoAR = new BoundColumn();

        BoundColumn IsHypoITP = new BoundColumn();

        BoundColumn HypoDesc = new BoundColumn();

        BoundColumn IsGuaranteeInd = new BoundColumn();

        BoundColumn IsGuaranteeEnt = new BoundColumn();

        BoundColumn IsGuaranteeCom = new BoundColumn();

        BoundColumn GuaranteeOTDesc = new BoundColumn();

        BoundColumn LoanAmountUpper = new BoundColumn();

        BoundColumn LoanAmountLower = new BoundColumn();

        BoundColumn LoanLimitUpper = new BoundColumn();

        BoundColumn LoanLimitLower = new BoundColumn();

        BoundColumn RepaymentType = new BoundColumn();

        BoundColumn ReviewDate = new BoundColumn();

        BoundColumn ProductDesc = new BoundColumn();

        BoundColumn ProductDoc = new BoundColumn();

        BoundColumn ProductURL = new BoundColumn();

        //将导出的excel表格上面的第五行隐藏掉

        ProductID.HeaderStyle.Height = 0;

        BankName.HeaderStyle.Height = 0;

        ProductName.HeaderStyle.Height = 0;

        IsServiceEnt.HeaderStyle.Height = 0;

        IsServiceTrade.HeaderStyle.Height = 0;

        IsServiceIndividual.HeaderStyle.Height = 0;

        ServiceOTDesc.HeaderStyle.Height = 0;

        IsIndividual.HeaderStyle.Height = 0;

        IsEnterpriseMF.HeaderStyle.Height = 0;

        IsEnterpriseWS.HeaderStyle.Height = 0;

        IsEnterpriseSR.HeaderStyle.Height = 0;

        IsEnterpriseST.HeaderStyle.Height = 0;

        EnterpriseOTDesc.HeaderStyle.Height = 0;

        AgeLimit.HeaderStyle.Height = 0;

        RegisterAddrType.HeaderStyle.Height = 0;

        BusinessIncome.HeaderStyle.Height = 0;

        TotalAssets.HeaderStyle.Height = 0;

        NoGuaranty.HeaderStyle.Height = 0;

        IsMortgageHS.HeaderStyle.Height = 0;

        IsMortgageFB.HeaderStyle.Height = 0;

        IsMortgageME.HeaderStyle.Height = 0;

        MortgageOTDesc.HeaderStyle.Height = 0;

        IsHypoDR.HeaderStyle.Height = 0;

        IsHypoWR.HeaderStyle.Height = 0;

        IsHypoIP.HeaderStyle.Height = 0;

        IsHypoAR.HeaderStyle.Height = 0;

        IsHypoITP.HeaderStyle.Height = 0;

        HypoDesc.HeaderStyle.Height = 0;

        IsGuaranteeInd.HeaderStyle.Height = 0;

        IsGuaranteeEnt.HeaderStyle.Height = 0;

        IsGuaranteeCom.HeaderStyle.Height = 0;

        GuaranteeOTDesc.HeaderStyle.Height = 0;

        LoanAmountUpper.HeaderStyle.Height = 0;

        LoanAmountLower.HeaderStyle.Height = 0;

        LoanLimitUpper.HeaderStyle.Height = 0;

        LoanLimitLower.HeaderStyle.Height = 0;

        RepaymentType.HeaderStyle.Height = 0;

        ReviewDate.HeaderStyle.Height = 0;

        ProductDesc.HeaderStyle.Height = 0;

        ProductDoc.HeaderStyle.Height = 0;

        ProductDoc.HeaderStyle.Height = 0;

        ProductID.DataField = "ProductID";

        BankName.DataField = "BankName";

        ProductName.DataField = "ProductName";

        IsServiceEnt.DataField = "IsServiceEnt";

        IsServiceTrade.DataField = "IsServiceTrade";

        IsServiceIndividual.DataField = "IsServiceIndividual";

        ServiceOTDesc.DataField = "ServiceOTDesc";

        IsIndividual.DataField = "IsIndividual";

        IsEnterpriseMF.DataField = "IsEnterpriseMF";

        IsEnterpriseWS.DataField = "IsEnterpriseWS";

        IsEnterpriseSR.DataField = "IsEnterpriseSR";

        IsEnterpriseST.DataField = "IsEnterpriseST";

        EnterpriseOTDesc.DataField = "EnterpriseOTDesc";

        AgeLimit.DataField = "AgeLimit";

        RegisterAddrType.DataField = "RegisterAddrType";

        BusinessIncome.DataField = "BusinessIncome";

        TotalAssets.DataField = "TotalAssets";

        NoGuaranty.DataField = "NoGuaranty";

        IsMortgageHS.DataField = "IsMortgageHS";

        IsMortgageFB.DataField = "IsMortgageFB";

        IsMortgageME.DataField = "IsMortgageME";

        MortgageOTDesc.DataField = "MortgageOTDesc";

        IsHypoDR.DataField = "IsHypoDR";

        IsHypoWR.DataField = "IsHypoWR";

        IsHypoIP.DataField = "IsHypoIP";

        IsHypoAR.DataField = "IsHypoAR";

        IsHypoITP.DataField = "IsHypoITP";

        HypoDesc.DataField = "HypoDesc";

        IsGuaranteeInd.DataField = "IsGuaranteeInd";

        IsGuaranteeEnt.DataField = "IsGuaranteeEnt";

        IsGuaranteeCom.DataField = "IsGuaranteeCom";

        GuaranteeOTDesc.DataField = "GuaranteeOTDesc";

        LoanAmountUpper.DataField = "LoanAmountUpper";

        LoanAmountLower.DataField = "LoanAmountLower";

        LoanLimitUpper.DataField = "LoanLimitUpper";

        LoanLimitLower.DataField = "LoanLimitLower";

        RepaymentType.DataField = "RepaymentType";

        ReviewDate.DataField = "ReviewDate";

        ProductDesc.DataField = "ProductDesc";

        ProductDoc.DataField = "ProductDoc";

        ProductURL.DataField = "ProductURL";

        dgd.Columns.Add(ProductID);

        dgd.Columns.Add(BankName);

        dgd.Columns.Add(ProductName);

        dgd.Columns.Add(IsServiceEnt);

        dgd.Columns.Add(IsServiceTrade);

        dgd.Columns.Add(IsServiceIndividual);

        dgd.Columns.Add(ServiceOTDesc);

        dgd.Columns.Add(IsIndividual);

        dgd.Columns.Add(IsEnterpriseMF);

        dgd.Columns.Add(IsEnterpriseWS);

        dgd.Columns.Add(IsEnterpriseSR);

        dgd.Columns.Add(IsEnterpriseST);

        dgd.Columns.Add(EnterpriseOTDesc);

        dgd.Columns.Add(AgeLimit);

        dgd.Columns.Add(RegisterAddrType);

        dgd.Columns.Add(BusinessIncome);

        dgd.Columns.Add(TotalAssets);

        dgd.Columns.Add(NoGuaranty);

        dgd.Columns.Add(IsMortgageHS);

        dgd.Columns.Add(IsMortgageFB);

        dgd.Columns.Add(IsMortgageME);

        dgd.Columns.Add(MortgageOTDesc);

        dgd.Columns.Add(IsHypoDR);

        dgd.Columns.Add(IsHypoWR);

        dgd.Columns.Add(IsHypoIP);

        dgd.Columns.Add(IsHypoAR);

        dgd.Columns.Add(IsHypoITP);

        dgd.Columns.Add(HypoDesc);

        dgd.Columns.Add(IsGuaranteeInd);

        dgd.Columns.Add(IsGuaranteeEnt);

        dgd.Columns.Add(IsGuaranteeCom);

        dgd.Columns.Add(GuaranteeOTDesc);

        dgd.Columns.Add(LoanAmountUpper);

        dgd.Columns.Add(LoanAmountLower);

        dgd.Columns.Add(LoanLimitUpper);

        dgd.Columns.Add(LoanLimitLower);

        dgd.Columns.Add(RepaymentType);

        dgd.Columns.Add(ReviewDate);

        dgd.Columns.Add(ProductDesc);

        dgd.Columns.Add(ProductDoc);

        dgd.Columns.Add(ProductURL);

        dgd.DataSource = dt.DefaultView;

        dgd.DataBind();

        if (dgd.Items.Count == 0)

        {

            throw (new Exception("there is no data in dateTable"));

        }

        else

        {

            //根据excel样式，用table来编写其样式

            string elxStr = "<table border='1px' style='text-align:center;vertical-align :middle ;font-weight :bold ; border-collapse :collapse ;'><tr> <td rowspan='4'>序号</td><td rowspan='4'>银行名称</td> <td rowspan='4'>产品名称</td>
<td rowspan='3' colspan='4'>业务实质</td> <td colspan='6'>贷款主体</td> <td rowspan='4'>企业成立最短年限(不限选0)</td> <td rowspan='4'>企业注册地</td><td rowspan='4'>营业收入(万元)</td><td rowspan='4'>企业总资产(万元)</td><td colspan='15'>担保方式</td><td rowspan='3' colspan='2'>额度（万元）</td><td rowspan='3'
colspan='2'>贷款期限（月）</td><td rowspan='4'>还款方式</td><td rowspan='4'>审批时间</td><td rowspan='4'>产品特点（50字以内，内容通俗易懂）</td><td rowspan='4'>申请所需特殊文件（50字以内）</td><td rowspan='4'>产品链接或热线电话</td></tr><tr><td rowspan='3'>个人</td><td rowspan='2' colspan='5'>企业类型</td><td rowspan='3'>不需要</td><td
colspan='14'>需要</td></tr><tr><td colspan='4'>抵押</td><td colspan='6'>质押</td><td colspan='4'>保证</td></tr><tr><td>企业流动资金贷款</td><td>贸易融资</td><td>个人经营性贷款</td><td>其他(请注明)</td><td>制造业</td><td>批发、零售</td><td>服务业</td><td>科技型</td><td>其他(请说明)</td><td>商业房产</td><td>厂房</td><td>机器设备</td><td>其他(请注明)</td><td>存单</td><td>仓单</td><td>保单</td><td>应收账款</td><td>知识产权</td><td>其他(请注明)</td><td>个人连带责任担保</td><td>企业担保</td><td>担保公司担保</td><td>其他(请注明)</td><td>下限</td><td>上限</td><td>下限</td><td>上限</td></tr></table>";

            HttpContext.Current.Response.Clear();

            HttpContext.Current.Response.Buffer = true;

            HttpContext.Current.Response.Charset = "gb2312";

            HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + defaultFileName);

            HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("GBK");

            //HttpContext.Current.Response.ContentEncoding = Encoding.UTF7;

            //设置输出流为简体中文,试了GBK会出现乱码

            HttpContext.Current.Response.ContentType = "application/ms-excel";

            //设置输出文件类型为excel文件。

            CultureInfo myCItrad = new CultureInfo("ZH-CN", true);

            StringWriter oStringWriter = new StringWriter(myCItrad);

            Response.Write(elxStr);

            HtmlTextWriter oHtmlTextWriter = new HtmlTextWriter(oStringWriter);

            dgd.RenderControl(oHtmlTextWriter);

            HttpContext.Current.Response.Write(oStringWriter.ToString());

            HttpContext.Current.Response.End();

        }

    }

}