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 = "\t\t\t\t"+ myExcelHeader +"\n\n\n";

colHeaders+=tableHeader(Tab)+"\n";

StringBuilder sb=new StringBuilder();

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

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

   colHeaders=sb.ToString();

colHeaders=colHeaders+"\n";
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+"\t";
        }
        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+"\t";
        }
       }
       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+"\t";
        }
        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+"\t";
        }
       }
      }
      catch
      {
       str+=Tab.Rows[row].Cells[col].InnerHtml+"\t";
      }
      if((col+1)%iCols==0)
      {
       str+="\n";
      }
     }
     else
     {
      str+="\t"+Tab.Rows[row].Cells[col].InnerHtml+"\t";
     }
    }
   }
   return(str);
}

}
}

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