export gridview to excel

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Hi,i have gridview as

ASP.NET

<asp:GridView ID="mygrid" runat="server" AllowPaging="True" AutoGenerateColumns="False"
        AutoGenerateDeleteButton="True" CssClass="GridStyle" DataKeyNames="ID">
        <%--<RowStyle BorderColor="Silver" BorderStyle="Solid" BorderWidth="1px" ForeColor="Blue" Wrap="True" />--%>
        <Columns>
            <asp:TemplateField HeaderText="colname">
                <ItemTemplate>
                    <asp:Label ID="name" runat="server" CssClass="DisplayDesc" Text='<%# Bind("name") %>'
                        Visible="false"></asp:Label>
                    <asp:LinkButton ID="lnkname" runat="server" CausesValidation="false" CssClass="datalink"
                        PostBackUrl="#" Text='<%# Bind("name") %>'></asp:LinkButton>
                    <asp:Panel ID="Panel6" runat="server" CssClass="wrapText" Width="200px">
                        <cc1:hovermenuextender id="hvrname"  runat="server" popupcontrolid="pnlteamsite" popupposition="Left"
                            targetcontrolid="lnkname"></cc1:hovermenuextender>
                        <asp:Panel ID="pnlteamsite" runat="server" CssClass="balloonstyle" Style="display: none"
                            Width="200px">
                            <div>
                                <asp:Panel ID="pnlBody2" runat="server" Width="200px">
                                    <table cellpadding="0" cellspacing="2" width="100%">
                                        <tr>
                                            <td class="LableText">
                                                <%# Eval("name") %>
                                            </td>
                                        </tr>
                                    </table>
                                </asp:Panel>
                            </div>
                        </asp:Panel>
                    </asp:Panel>
                </ItemTemplate>
                <ControlStyle />
            </asp:TemplateField>
            <columns>
    </asp:GridView>

my code behide code for export as

private void CreateExcel(GridView GrdTemp)
      {
          Response.Clear();
          Response.Buffer = true;

          Response.AddHeader("content-disposition", "attachment;filename=AppList.xls");
          Response.Charset = "";
          Response.ContentType = "application/vnd.ms-excel";

          this.EnableViewState = false;
          StringWriter sw = new StringWriter();
          HtmlTextWriter hw = new HtmlTextWriter(sw);

          GrdTemp.AllowPaging = false;
          GrdTemp.AutoGenerateDeleteButton = false;
          GrdTemp.AutoGenerateEditButton = false;
          GrdTemp.DataBind();

          GrdTemp.RenderControl(hw);

          Response.Output.Write(sw.ToString());
          Response.Flush();
          Response.End();
      }

but I am not able to export ,i am getting error as
Extender control 'hvrname' is not a registered extender control. Extender controls must be registered using RegisterExtenderControl() before calling RegisterScriptDescriptors().
Parameter name: extenderControl
in the line
GrdTemp.RenderControl(hw);
I had done rnd and added every possiblity as

override protected void OnInit(EventArgs e)
       {
           base.OnInit(e);
           if (this.DesignMode == true)
           {
               this.EnsureChildControls();
           }
           this.Page.RegisterRequiresControlState(this);
       }

and as

public override void VerifyRenderingInServerForm(Control control)
        {

        }

and as EnableEventValidation="false" ,but still the same error .how to solve it. Please help.

Posted 22-Aug-12 11:09am

software_Engi08

Updated 22-Aug-12 18:18pm

Prasad_Kulkarni

v2

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Prasad_Kulkarni · Answer 1 · 2012-08-22T18:30:00

Did you register the control in the page directive? Have the proper entries for AJAX Control ToolKit been added to the web.config?

Register ajax control toolkit in your page

HTML

<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="CC" %>

Or else remove and add the dll reference again. Also, have a look here for more info:
http://ajaxcontroltoolkit.codeplex.com/[^]
http://www.ajaxcontroltoolkit.com/[^]

..and for your error Extender controls must be registered using RegisterExtenderControl() before calling RegisterScriptDescriptors().
refer similar threads:
Extender controls must be registered using RegisterExtenderControl() before calling RegisterScriptDescriptors()[^] and
many more here[^]

Kuthuparakkal · Answer 2 · 2012-08-22T16:50:00

Solution 2

see this:
http://www.c-sharpcorner.com/uploadfile/dipalchoksi/exportxl_asp2_dc11032006003657am/exportxl_asp2_dc.aspx[^]

Posted 22-Aug-12 16:50pm

Kuthuparakkal

santosh_k · Answer 3 · 2012-08-22T18:12:00

Here is the complete code to Export GridView to Excel:

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient; 

public partial class ExportGridView : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            GridView1.DataSource = BindData();
            GridView1.DataBind(); 
        }
    }

    

    private string ConnectionString
    {

        get { return @"Server=localhost;Database=Northwind;
        Trusted_Connection=true"; }

    }

    

    private DataSet BindData()
    {
        // make the query 
        string query = "SELECT * FROM Categories";
        SqlConnection myConnection = new SqlConnection(ConnectionString);
        SqlDataAdapter ad = new SqlDataAdapter(query, myConnection);
        DataSet ds = new DataSet();
        ad.Fill(ds, "Categories");
        return ds;

    }




    protected void Button1_Click(object sender, EventArgs e)
    {
        Response.Clear();

        Response.AddHeader("content-disposition", "attachment;
        filename=FileName.xls");

        Response.Charset = "";

        // If you want the option to open the Excel file without saving than

        // comment out the line below

        // Response.Cache.SetCacheability(HttpCacheability.NoCache);

        Response.ContentType = "application/vnd.xls";

        System.IO.StringWriter stringWrite = new System.IO.StringWriter();

        System.Web.UI.HtmlTextWriter htmlWrite =
        new HtmlTextWriter(stringWrite);

        GridView1.RenderControl(htmlWrite);

        Response.Write(stringWrite.ToString());

        Response.End();

    }

    public override void VerifyRenderingInServerForm(Control control)
    {

        // Confirms that an HtmlForm control is rendered for the
        specified ASP.NET server control at run time.

    }
}

Pandvi · Answer 4 · 2012-08-22T15:59:00

Solution 1

Try a free Data export[^] tools. This one helps you to export your gridview to Excel easily.

Posted 22-Aug-12 15:59pm

Pandvi

export gridview to excel

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