well I have some problem

hi

try the following code, it may help you.


 StreamWriter sw = new StreamWriter("c:\\sss.txt");
            DataTable dt = new DataTable();
            DataColumn dc = new DataColumn("ID", typeof(string));
            dc.AllowDBNull = false;
            dc.Unique = true;
            dt.Columns.Add(dc);
            dt.Columns.Add("FirstName", typeof(string));
            dt.Columns.Add("LastName", typeof(string));
            dt.Rows.Add(1, "aaa", "bbb");
            dt.Rows.Add(2, "ccc", "dddd");
            int length = dt.Columns.Count; int length1 = dt.Rows.Count;
            for (int i = 0; i < length; i++)
            {
                sw.Write(dt.Columns[i] + ";");
            }
            foreach (DataRow dr in dt.Rows)
            {
                sw.Write("\r\n" + dr[0] + " " + dr[1] + " " + dr[2]);
            }
            sw.Close();
            StreamReader sr = new StreamReader("c:\\sss.txt");
            String a = sr.ReadLine();
            String[] col = a.Split(';');
           
            //col String array contains column headers
            //write your code here, to create columns

            Console.Write(a + "\n");

            while ((a=sr.ReadLine()) != null)
            {
                DataSet dd = new DataSet();
                Console.Write(a + "\n");
                String[] rows = a.Split(' ');
                // rows string array contains rows of the table
                //write your code here, to add rows into table
            }
            sr.Close();