GridView实用示例源码附加导出Excel功能

代码

  public partial class _Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            Button2.Attributes["onclick"] = "return slcNo_click();";
            GridViewBind("");
        }
        private void GridViewBind(string Sqlsort)
        {
            string connStr = ConfigurationManager.ConnectionStrings["Conn51aspx"].ConnectionString;
            string SqlStr = "SELECT * FROM test01 where id<1000" + Sqlsort;
            DataSet ds = new DataSet();

            try
            {
                SqlConnection conn = new SqlConnection(connStr);
                if (conn.State.ToString() == "Closed") conn.Open();

                SqlDataAdapter da = new SqlDataAdapter(SqlStr, conn);
                da.Fill(ds, "test01");
                if (conn.State.ToString() == "Open") conn.Close();

                GridView1.DataSource = ds.Tables[0].DefaultView;
                GridView1.DataBind();

                LblCurrentIndex.Text = "第 " + (GridView1.PageIndex + 1).ToString() + " 页";
                LblPageCount.Text = "共 " + GridView1.PageCount.ToString() + " 页";
                LblRecordCount.Text = "总共 " + ds.Tables[0].Rows.Count.ToString() + " 条";
                if (ds.Tables[0].Rows.Count == 0)
                {
                    btnFirst.Visible = false;
                    btnPrev.Visible = false;
                    btnNext.Visible = false;
                    btnLast.Visible = false;

                    LblCurrentIndex.Visible = false;
                    LblPageCount.Visible = false;
                    LblRecordCount.Visible = false;
                }
                else if (GridView1.PageCount == 1)
                {
                    btnFirst.Visible = false;
                    btnPrev.Visible = false;
                    btnNext.Visible = false;
                    btnLast.Visible = false;
                }

                // 计算生成分页页码,分别为："首 页" "上一页" "下一页" "尾 页"
                btnFirst.CommandName = "1";
                btnPrev.CommandName = (GridView1.PageIndex == 0 ? "1" : GridView1.PageIndex.ToString());

                btnNext.CommandName = (GridView1.PageCount == 1 ? GridView1.PageCount.ToString() : (GridView1.PageIndex + 2).ToString());
                btnLast.CommandName = GridView1.PageCount.ToString();
                //
            }
            catch (Exception ex)
            {
                Response.Write("数据库错误，错误原因：" + ex.Message);
                Response.End();
            }
        }
        protected void PagerButtonClick(object sender, EventArgs e)
        {
            GridView1.PageIndex = Convert.ToInt32(((LinkButton)sender).CommandName) - 1;
            GridViewBind("");
        }

        protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            e.Row.Attributes["onmouseover"] = "ItemOver(this)";

            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                e.Row.Cells[1].Attributes.Add("style", "vnd.ms-excel.numberformat:@;");
            }
        }

        protected void Button2_Click(object sender, EventArgs e)
        {
            string str = "";
            string[] ckb = null;

            str = Request.Form.Get("checkboxname");
            ckb = str.Split(new char[] { ',' });

            Response.Write("直接在页面中得到的值为：" + str + "<br>");

            Response.Write("处理后存放在数组中，如下：<br>");
            for (int i = 0; i < ckb.Length; i++)
            {
                Response.Write("ckb[" + i + "]的值为：" + ckb[i] + "<br>");
            }
        }
        protected void Button1_Click(object sender, EventArgs e)
        {
            Response.Write(Request.Form.Get("RadioName"));
        }
        protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
        {
            string sql = "";

            if (ViewState["SortDirection"] == null || ViewState["SortDirection"].ToString().CompareTo("") == 0)
            {
                ViewState["SortDirection"] = " desc";
            }
            else
                ViewState["SortDirection"] = "";

            sql = " order by " + e.SortExpression + ViewState["SortDirection"];

            GridViewBind(sql);
        }

        //导出到Execl
        protected void Button3_Click(object sender, EventArgs e)
        {
            Response.ClearContent();
            Response.AddHeader("content-disposition", "attachment; filename=MyExcelFile.xls");
            Response.ContentType = "application/excel";
            StringWriter sw = new StringWriter();
            HtmlTextWriter htw = new HtmlTextWriter(sw);
            GridView1.RenderControl(htw);
            Response.Write(sw.ToString());
            Response.End();


        }

        public override void VerifyRenderingInServerForm( Control control )
        { }


    }

 源代码

https://files.cnblogs.com/lilo202/GridView%e5%ae%9e%e7%94%a8%e7%a4%ba%e4%be%8b%e6%ba%90%e7%a0%81%e9%99%84%e5%8a%a0%e5%af%bc%e5%87%baExcel%e5%8a%9f.rar