[Not a question] I m getting error aftrwriting this code

string dbpath = @"D:\Demo.db";

    SQLiteConnection connection = new SQLiteConnection("Data Source =" + dbpath);
    connection.Open();
    String query = "Insert into Customer(Job No,Customer Name,Address,Mobile No 1,Mobile No 2,Mobile No 3,Email_ID) values (" +txtsr.Text+","+txtname.Text+","+txtadd.Text+","+txtmb1.Text+","+txtmb2.Text+","+txtmb3.Text+","+txtemail.Text+")";
    SQLiteCommand command = new SQLiteCommand(query,connection);
    command.ExecuteNonQuery();
    connection.Close();