get url from database and display image in file system

<asp:Image ID="image1" runat="server" ImageUrl="ImgLnk" Height="100px" Width="100px" />

string strConnectionString = ConfigurationManager.ConnectionStrings[""].ConnectionString;
        string strSelect = "SELECT ImgLnk FROM Business WHERE ImgLnk = @ImgLnk";
        SqlConnection sqlCon = new SqlConnection();
        sqlCon.ConnectionString = strConnectionString;
        SqlCommand cmdCustomerDetails = new SqlCommand();
        cmdCustomerDetails.Connection = sqlCon;
        cmdCustomerDetails.CommandType = System.Data.CommandType.Text;
        cmdCustomerDetails.CommandText = strSelect;
        cmdCustomerDetails.Parameters.AddWithValue("@ImgLnk", strImgLnk);
       
        sqlCon.Open();
 
        //Create DataReader to read the record
        SqlDataReader dReader = cmdCustomerDetails.ExecuteReader();
       

        GridView2.DataSource = dReader;
        GridView2.DataBind();
        while (dReader.Read())
        {

            image1.ImageUrl = HttpUtility.UrlEncode(dReader["ImgLnk"].ToString());
        } 
        sqlCon.Close();