How to Export GridView Data to Excel Using Asp.Net C#

 EXCEL FILE GENERATE


        DEMO

C# Coding

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Data;

using System.Data.SqlClient;

using System.IO;

public partial class Excel : System.Web.UI.Page

{

    SqlConnection con;

    SqlCommand cmd;

    SqlDataAdapter adp;

    SqlDataReader rd;

    DataSet ds;

    string query;

    public void dbcon()

    {

        string connn = (System.Configuration.ConfigurationManager.ConnectionStrings["dbcon"].ToString());

        con = new SqlConnection(connn);

        con.Open();

    }

    protected void Page_Load(object sender, EventArgs e)

    {

    }

    protected void Button1_Click(object sender, EventArgs e)

    {

        dbcon();

        query = "select * from register";

        cmd = new SqlCommand(query, con);

        adp = new SqlDataAdapter(cmd);

        ds = new DataSet();

        adp.Fill(ds);

        GridView1.DataSource = ds;

        GridView1.DataBind();

    }

    public override void VerifyRenderingInServerForm(Control control)

    {

        //base.VerifyRenderingInServerForm(control);

    }

    protected void Button2_Click(object sender, EventArgs e)

    {

        Response.ClearContent();

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

        Response.ContentType = "application/excel";

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

        HtmlTextWriter htw = new HtmlTextWriter(sw);

        GridView1.RenderControl(htw);

        Response.Write(sw.ToString());

        Response.End();

    }

}