Counter.aspx.cs

using System;
using System.Data;
using System.Configuration;
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 Counter : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (System.Web.HttpContext.Current.Session["Seller"] as string == null)
        {
            Response.Redirect("Login.aspx");
        }

        
    }
    protected void Button13_Click(object sender, EventArgs e)
    {

        try{
        SqlCommand cmd = new SqlCommand("Insertcounter", new SqlConnection(ConfigurationManager.AppSettings["ConnString"]));
        cmd.CommandType = CommandType.StoredProcedure;

        cmd.Parameters.AddWithValue("@Counter_code", textcode.Text);
        cmd.Parameters.AddWithValue("@Name", txtname.Text);
        cmd.Parameters.AddWithValue("@Location", txtlocation.Text);
        cmd.Parameters.AddWithValue("@Telephone", txtphone.Text);

        cmd.Connection.Open();
        cmd.ExecuteNonQuery();
        cmd.Connection.Close();

        ScriptManager.RegisterStartupScript(this, this.GetType(), "RunCode", "javascript:alert('The Record has been saved succefull');", true);

        }
        catch (Exception ex)
        {
            Response.Write("Error occured : " + ex.ToString());
        }
    }
    protected void Button12_Click(object sender, EventArgs e)
    {

    }
    protected void Button4_Click(object sender, EventArgs e)
    {
        

        SqlConnection con = new SqlConnection("Data Source=JOHN-PC;Initial Catalog=Skyminerals;Integrated Security=True");
        con.Open();
        SqlCommand cmd = new SqlCommand();
        cmd.CommandText = "select * from Counter where Counter_code like'" + TextBox7.Text + "%'";
        cmd.Connection = con;
        SqlDataAdapter da = new SqlDataAdapter(cmd);
        DataSet ds = new DataSet();
        da.Fill(ds);
        GridView2.DataSource = ds;
        GridView2.DataBind();
        SqlDataReader dr;
        dr = cmd.ExecuteReader();

        if (dr.HasRows)
        {

            dr.Read();
            GridView1.Visible = false;
            GridView2.Visible = true;
            Panel1.Visible = false;
            Label17.Visible = false;
        }

        else
        {
            GridView2.Visible = false;

            Response.Write("<script>alert('the search term is not available in the Records');</script>");

        }
    

    }
}