當點擊一個按鈕時把gridview中的值導入到excel中

 1.點擊事件

 protected void buts_Click(object sender, EventArgs e)
        {
            //清除客戶端當前顯示
            Response.Clear();
            //作爲附件輸出,filename=FileFlow.xls 指定輸出文件的名稱,注意其擴展名和指定文件類型相符，可以爲：.doc 　　 .xls 　　 .txt 　　.htm　　
            Response.AddHeader("content-disposition", "attachment;filename=agentno_download_YYYYMMDD.xls");  //顯示標頭
            //設置顯示的字和內容要存的形式
            Response.Charset = "gb2312";
            Response.ContentType = "application/vnd.xls";

          //Response.ContentType = "application/octet-stream";(此句適合任何文件類型)
            System.IO.StringWriter stringWrite = new System.IO.StringWriter();
            System.Web.UI.HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite);

            this.GridView1.Columns[0].Visible = false;//使第一列修改不會導入進去
            this.GridView1.Columns[1].Visible = false;//使第二列刪除不會導入進去

            GridView1.AllowPaging = false;
            Bind();
            GridView1.RenderControl(htmlWrite);
            Response.Write(stringWrite.ToString());
            Response.End();
            GridView1.AllowPaging = true;
            Bind();

        }

2.必須要的方法(如果沒有這個方法就回報錯)

   public override void VerifyRenderingInServerForm(Control control)
        {
            //base.VerifyRenderingInServerForm(control);
        }

3.綁定gridview方法:

public DataTable dt = null;

 protected void Bind()
   {
       string strSql = "select * from Book";
        using (SqlConnection conn = new SqlConnection("server=192.168.30.246;database=stuDB;user id=sa;password=sa;pooling=true;"))
      
       {
          using (SqlDataAdapter da = new SqlDataAdapter(strSql, conn))
        {

            try
            {
             
                 conn.Open();
                 dt = new DataTable();
                 da.Fill(dt);  
                 this.GridView1.DataSource = dt;
                this.GridView1.DataBind();
            }
            catch(Exception err)
            {
                throw new Exception("錯誤信息如下："+err.Message.ToString());
            }
        }
    }

    }

4.如果不是管理員那麼不能刪除/添加/修改等操作

 if (!Common.IsManager(Session["userid"].ToString()))
        {
          
            this.GridView1.Columns[0].Visible = false;
            this.GridView1.Columns[1].Visible = false;
            this.addbut.Visible = false;
            this.baobiao.Visible = false;

        }

 

 

5.導入時格式的轉換：

protected void gError_RowDataBound(object sender, GridViewRowEventArgs e)
    {
           //1） 文本：vnd.ms-excel.numberformat:@
          //2） 日期：vnd.ms-excel.numberformat:yyyy/mm/dd
         //3） 數字：vnd.ms-excel.numberformat:#,##0.00
         //4） 貨幣：vnd.ms-excel.numberformat:￥#,##0.00
         //5） 百分比：vnd.ms-excel.numberformat: #0.00%
        for (int i = 0; i < e.Row.Cells.Count; i++)
        {
            if (e.Row.RowType == DataControlRowType.DataRow)
                e.Row.Cells[i ].Attributes.Add("style", "vnd.ms-excel.numberformat:@");
        }
          
    }