ASP.NET导出EXCEL类

最新ASP.NET导出EXCEL类

说明：可以导出ASP.NET页面和DATAGRID（WebControl）数据，可以导出表单头

using System;
using System.Data;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Diagnostics;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using System.Collections;

namespace bookstore
{
 ///
 /// Excel 的摘要说明。
 ///
 public class Excel
 {
  public Excel()
  {
   //
   // TODO: 在此处添加构造函数逻辑
   //
  }
 

  public void SaveToExcel(Page myPage, DataTable dt,DataGrid DG,string myExcelHeader,HtmlTable Tab,string myFileName)
  {
   HttpResponse resp;   
   resp=myPage.Response;
   resp.ContentEncoding=Encoding.GetEncoding("GB18030");
   resp.AppendHeader("Content-Disposition","attachment;filename="+myFileName+".xls");
   resp.ContentType="application/ms-excel";

   string colHeaders = " "+ myExcelHeader +" ";

   colHeaders+=tableHeader(Tab)+" ";

   StringBuilder sb=new StringBuilder();
  
   int mycol=DG.Columns.Count;
   ArrayList myAL=new ArrayList();

   for(int i=0;i   {
    colHeaders +=DG.Columns[i].HeaderText+" "; 
    myAL.Add(((System.Web.UI.WebControls.BoundColumn)(DG.Columns[i])).DataField); 
   }
   colHeaders += " ";
   sb.Append(colHeaders);

   int myrow=dt.Rows.Count;

   for(int k=0;k   {
    foreach(string field in myAL)
    {  
     sb.Append(dt.Rows[k][field]);
     sb.Append(" ");
    }
    sb.Append(" ");
   }      
  
   colHeaders=sb.ToString();

   colHeaders=colHeaders+" ";
   resp.Write(colHeaders); 

   resp.End();
   resp.Clear();
   resp.Close(); 
  }

  /*得到表单头子*/
  /*表单头子有TABLE组成，偶次项排列，TABLE在HTML中加 RUNAT=SERVER*/
  public string tableHeader(HtmlTable Tab)
  {
   int iCols=Tab.Rows[0].Cells.Count;
   int iRows=Tab.Rows.Count;
   string str="";
  
   for(int row=0;row   {
    for(int col=0;col    {
     if(col%2==1)//取偶次项的控件数据（目前只有TextBox和DropDownList，没有包含LABEL）
     {
      try
      {
       if(Tab.Rows[row].Cells[col].Controls[0].ToString()=="System.Web.UI.LiteralControl")
       {
        if(Tab.Rows[row].Cells[col].Controls[1].ToString()=="System.Web.UI.WebControls.TextBox")
        {
         str+=((System.Web.UI.WebControls.TextBox)(Tab.Rows[row].Cells[col].Controls[1])).Text+" ";
        }
        if(Tab.Rows[row].Cells[col].Controls[1].ToString()=="System.Web.UI.WebControls.DropDownList")
        {
         str+=((System.Web.UI.WebControls.ListControl)(((System.Web.UI.WebControls.DropDownList)((Tab.Rows[row].Cells[col].Controls[1]))))).SelectedValue+" ";    
        }
       }
       else
       {
        if(Tab.Rows[row].Cells[col].Controls[0].ToString()=="System.Web.UI.WebControls.TextBox")
        {
         str+=((System.Web.UI.WebControls.TextBox)(Tab.Rows[row].Cells[col].Controls[0])).Text+" ";
        }
        if(Tab.Rows[row].Cells[col].Controls[0].ToString()=="System.Web.UI.WebControls.DropDownList")
        {
         str+=((System.Web.UI.WebControls.ListControl)(((System.Web.UI.WebControls.DropDownList)((Tab.Rows[row].Cells[col].Controls[0]))))).SelectedValue+" ";    
        }
       }
      }
      catch
      {
       str+=Tab.Rows[row].Cells[col].InnerHtml+" ";
      }
      if((col+1)%iCols==0)
      {
       str+=" ";
      }
     }
     else
     {
      str+=" "+Tab.Rows[row].Cells[col].InnerHtml+" ";
     }
    }
   }
   return(str);
  }
 
 }
}