error when running, using database from server

[jaylisto 0]

this is a very simple task, it insert name, address and age to the database

 

error when the sql data base from server is use.

 

but when data base from folder app_data is used its working.

 

 

 

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Data.SqlClient;

using System.Configuration;

namespace WebApplication5

{

public partial class WebForm1 : System.Web.UI.Page

{

SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString);

protected void Page_Load(object sender, EventArgs e)

{

con.Open();

}

protected void Button1_Click(object sender, EventArgs e)

{

SqlCommand cmd = new SqlCommand("insert into listotable values('"+TextBox1.Text+"','" +TextBox2.Text+"', '"+TextBox3.Text+"')",con);

cmd.ExecuteNonQuery();

con.Close();

TextBox3.Text="";

TextBox2.Text="";

TextBox1.Text="";

}

}

}

Edited February 2, 2015 by jaylisto

[justsomeguy 1,135]

The error message says that you're trying to use something that isn't an object. The highlighted line includes a few objects, so make sure that all of them are set to what you need them to be.