DataGird导出EXCEL的几个方法

DataGird导出EXCEL的几个方法（WebControl）

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
{
/// <summary>
/// myExcel 的摘要说明。
/// </summary>
public class myExcel
{
public myExcel()
{

}

/// <summary>
/// 将DATAGRID导出为EXCEL文件方法一,
/// 参数是:要导出的DATAGRID的ID和要保存下来的EXCEL文件名
/// </summary>
/// <param name="myPage">page</param>
/// <param name="dg">datagrid</param>
/// <param name="name">filename</param>
private void OutExcel(Page myPage,DataGrid dg,string name)
{
   HttpResponse Response;
   Response=myPage.Response;

string name1="attachment;filename="+name+".xls";
   dg.Visible=true;
   Response.Clear();
   Response.Buffer= true;
   Response.Charset="GB2312";

   Response.AppendHeader("Content-Disposition",name1);

Response.ContentEncoding=System.Text.Encoding.GetEncoding("GB2312");
Response.ContentType ="application/ms-excel";

dg.EnableViewState = false;
   System.IO.StringWriter oStringWriter = new System.IO.StringWriter();
   System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
   dg.RenderControl(oHtmlTextWriter);
   Response.Write(oStringWriter.ToString());
   Response.End();
}

/// <summary>
/// 将DATAGRID导出为EXCEL文件方法二,
/// 参数是:要导出的DATAGRID的ID和要保存下来的EXCEL文件名
/// </summary>
/// <param name="myPage">page</param>
/// <param name="ctl">datagrid</param>
/// <param name="filename">filename</param>
public void ExportToExcel(Page myPage,DataGrid ctl,string filename)
{
HttpResponse Response;
Response=myPage.Response;

bool CurrCtlVisible=ctl.Visible;
   ctl.Visible=true;
   Response.AppendHeader("Content-Disposition","attachment;filename="+filename+".xls");
   Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8");
   Response.ContentType = "application/ms-excel";
   ctl.Page.EnableViewState = false;
   System.IO.StringWriter tw = new System.IO.StringWriter();
   System.Web.UI.HtmlTextWriter hw = new HtmlTextWriter(tw);
   ctl.RenderControl(hw);
   Response.Write(tw.ToString());
   Response.End();

   ctl.Page.EnableViewState = true;
   ctl.Visible=CurrCtlVisible;
}

private void DgOutExcel(Page myPage,DataGrid dg,string name)
{
HttpResponse Response;
Response=myPage.Response;

Response.ContentEncoding=System.Text.Encoding.GetEncoding("GB2312");
Response.ContentType ="application/ms-excel";

#region 导出EXCEL，用DATASET

public string myExportString(DataGrid DG,DataSet ds)
{
   string HTstring="<table><tr>";
   string Fieldstring="";
   ArrayList myAL=new ArrayList();
   string sRows="<tr>";
   for(int i=0;i<DG.Columns.Count;i++)
   {
    HTstring+="<td>"+DG.Columns[i].HeaderText+"</td>";
    Fieldstring+="<td>"+((System.Web.UI.WebControls.BoundColumn)(DG.Columns[i])).DataField+"</td>";
    myAL.Add(((System.Web.UI.WebControls.BoundColumn)(DG.Columns[i])).DataField);
   }

   for(int k=0;k<ds.Tables[0].Rows.Count;k++)
   {
    foreach(string field in myAL)
    {
     sRows+= "<td>"+ds.Tables[0].Rows[k][field]+"</td>";
    }
    sRows+="</tr>";
   }
   HTstring+="</tr>"+sRows+"</table>";

return HTstring;
}

public void SaveToExcel(Page myPage, string myExportString,string myFileName)
{
   HttpResponse resp;
   resp=myPage.Response;
   resp.ContentEncoding=System.Text.Encoding.GetEncoding("GB2312");
   resp.AppendHeader("Content-Disposition","attachment;filename="+myFileName+".xls");
   resp.ContentType="application/ms-excel";
   resp.Write(myExportString);
   resp.End();
   //resp.Clear();
   //resp.Close();
}

public void Export(DataGrid myDG,DataTable dt,HttpResponse response)
{
   // clean up response object
   response.Clear();
   response.Charset = "";
   response.Charset = "UTF-8";
   //   response.ContentEncoding = System.Text.Encoding.Default;
   response.ContentEncoding=System.Text.Encoding.GetEncoding("GB2312");
   // set response object's mime type
   //   response.ContentType = "application/vnd.ms-excel";
   response.AppendHeader("Content-Disposition","attachment;filename=mytest.xls");
   System.IO.StringWriter sw = new System.IO.StringWriter();
   System.Web.UI.HtmlTextWriter htw = new System.Web.UI.HtmlTextWriter(sw);

DataGrid dg = new DataGrid();
dg.AllowPaging = false;
dg.AllowSorting = false;

ArrayList myAL=new ArrayList();
   for(int i=0;i<myDG.Columns.Count;i++)
   {
    // dg.Columns.AddAt(i,myDG.Columns[i]);
    // dg.Columns[i].HeaderText=myDG.Columns[i].HeaderText;
    myAL.Add(((System.Web.UI.WebControls.BoundColumn)(myDG.Columns[i])).DataField);

for(int k=0;k<dt.Columns.Count;k++)
    {
     foreach(string field in myAL)
     {
      if(dt.Columns[i].ColumnName==field)
      {
       dt.Columns[i].ColumnName=myDG.Columns[i].HeaderText;
      }
     }
    }
   }
   dg.DataSource = dt;
   dg.ShowHeader = true;
   dg.HeaderStyle.BackColor = System.Drawing.Color.DarkGray;
   dg.HeaderStyle.ForeColor = System.Drawing.Color.White;
   dg.HeaderStyle.Font.Bold = true;
   dg.AlternatingItemStyle.BackColor = System.Drawing.Color.LightGray;
   dg.DataBind();

dg.RenderControl(htw);
   response.Write(sw.ToString());
   response.End();
}

#endregion

}
}

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DataGird导出EXCEL的几个方法

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