Question

am working in C# on ADO.NET, i connected with my database successfully and everything is fine so i put check in side while(reader.Read) to check specefic value but the condition is giving false everytime i try,

            string qry = "select * from LoginTB";
            reader = db.select_data(qry);
            while (reader.Read())
            {
                MessageBox.Show(reader["ID"].ToString());// its shows Doctor
                    if (string.Equals(reader["ID"].ToString(), "Doctor"))// why false?!
                    {

                        //flag = true;
                        MessageBox.Show("hello");
                        str = reader[2].ToString();
                        break;
                    }
            }

Answer 1

You probably have whitespace at one end or another.

Try changing your MessageBox call to surround the string with quotation marks, or add a .Trim to the comparison:

... (reader["ID"].ToString().Trim(), "Doctor") ...