Error: The method or operation is not implemented. plz solve

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.Configuration;

using System.IO;

using System.Drawing;

using System.Data.OleDb;

namespace uploadfile25

{

public partial class file25 : System.Web.UI.Page

{

public SqlCommand com { get; set; }public string query { get; set; }

protected void Page_Load(object sender, EventArgs e)

{

}

protected void Button1_Click(object sender, EventArgs e)

{

Label2.Visible = true;

string filePath = FileUpload1.PostedFile.FileName; // getting the file path of uploaded file

string filename1 = Path.GetFileName(filePath); // getting the file name of uploaded file

string ext = Path.GetExtension(filename1); // getting the file extension of uploaded file

string type = String.Empty;

if (!FileUpload1.HasFile)

{

Label2.Text = "Please Select File"; //if file uploader has no file selected

}

else

if (FileUpload1.HasFile)

{

try

{

switch (ext) // this switch code validate the files which allow to upload only excel file you can change it for any file

{

case ".xls":

type = "application/vnd.ms-excel";

break;

case ".xlsx":

type = "application/vnd.ms-excel";

break;

case ".csv":

type = "application/vnd.ms-excle";

break;

}

if (type != String.Empty)

{

connection();

Stream fs = FileUpload1.PostedFile.InputStream;

BinaryReader br = new BinaryReader(fs); //reads the binary files

Byte[] bytes = br.ReadBytes((Int32)fs.Length); //counting the file length into bytes

query = "insert into vicidialdemo(phone_number,title,first_name,middle_initial,last_name,address,city,state,province,postal_code,country_code,gender,date_of_birth,alt_phone,email)"

+ " values (@phone_number, @title, @first_name, @middle_initial, @last_name, @address, @city, @state, @province, @postal_code, @country_code, @gender, @date_of_birth, @alt_phone, @email)"; //insert query

com = new SqlCommand(query, con);

com.Parameters.Add("@phone_number", SqlDbType.VarChar).Value = phone_number;

com.Parameters.Add("@title", SqlDbType.VarChar).Value = title;

com.Parameters.Add("@first_name", SqlDbType.Binary).Value = first_name;

com.Parameters.Add("@middle_initial", SqlDbType.Binary).Value = middle_initial;

com.Parameters.Add("@last_name", SqlDbType.Binary).Value = last_name;

com.Parameters.Add("@address", SqlDbType.Binary).Value = addres;

com.Parameters.Add("@city", SqlDbType.Binary).Value = city;

com.Parameters.Add("@state", SqlDbType.Binary).Value = state;

com.Parameters.Add("@province", SqlDbType.Binary).Value = province;

com.Parameters.Add("@postal_code", SqlDbType.Binary).Value = postal_code;

com.Parameters.Add("@country_code", SqlDbType.Binary).Value = country_code;

com.Parameters.Add("@gender", SqlDbType.Binary).Value = gender;

com.Parameters.Add("@date_of_birth", SqlDbType.Binary).Value = date_of_birth;

com.Parameters.Add("@alt_phone", SqlDbType.Binary).Value = alt_phone;

com.Parameters.Add("@email", SqlDbType.Binary).Value = email;

com.ExecuteNonQuery();

Label2.ForeColor = System.Drawing.Color.Green;

Label2.Text = "File Uploaded Successfully";

}

else

{

Label2.ForeColor = System.Drawing.Color.Red;

Label2.Text = "Select Only Excel File having extension .xlsx or .xls or .csv "; // if file is other than speified extension

}

}

catch (Exception ex)

{

Label2.Text = "Error: " + ex.Message.ToString();

}

}

}

// private void connection()

// {

// throw new NotImplementedException();

// }

protected void Button2_Click(object sender, EventArgs e)

{

GridView1.Visible = true;

connection();

query = "Select *from vicidialdemo";

SqlDataAdapter da = new SqlDataAdapter(query, con);

DataSet ds = new DataSet();

da.Fill(ds, "vicidialdemo");

GridView1.DataSource = ds.Tables[0];

GridView1.DataBind();

con.Close();

}

private void connection()

{

throw new NotImplementedException();

}

// private void connection()

//{

// throw new NotImplementedException();

// }

protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)

{

using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["Data Source=ANIRUDDHA-PC;Initial Catalog=dddd;Integrated Security=True"].ToString()))

{

con.Open();

SqlCommand cmd = new SqlCommand("select Name,type,data from vicidialdemo where ID=@ID", con);

cmd.Parameters.AddWithValue("id", GridView1.SelectedRow.Cells[1].Text);

SqlDataReader dr = cmd.ExecuteReader();

if (dr.Read())

{

Response.Clear();

Response.Buffer = true;

Response.ContentType = dr["type"].ToString();

// to open file prompt Box open or Save file

Response.AddHeader("content-disposition", "attachment;filename=" + dr["Name"].ToString());

Response.Charset = "";

Response.Cache.SetCacheability(HttpCacheability.NoCache);

Response.BinaryWrite((byte[])dr["data"]);

Response.End();

}

}

}

public SqlConnection con { get; set; }

public object phone_number { get; set; }

public object title { get; set; }

public object first_name { get; set; }

public object middle_initial { get; set; }

public object last_name { get; set; }

public object address { get; set; }

public object addres { get; set; }

public object city { get; set; }

public object state { get; set; }

public object province { get; set; }

public object postal_code { get; set; }

public object country_code { get; set; }

public object gender { get; set; }

public object date_of_birth { get; set; }

public object alt_phone { get; set; }

public object email { get; set; }

}

}