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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;
..
nt i = 0;
             int a = 0;
             int b = 0;
             string record,datum,zeit,eintrag;
             string[,] Termin = new string[365,10];
             string[] ntermin = new string[999];

b = 0;

            StreamReader reader = New StreamReader("D:\\Termin.txt");

            //nadressen = Adressen;

            Do
            {
                b = b + 1;

                String[] zeile = reader.ReadLine().Split('#');
                datum = zeile[0];
                zeit = zeile[1];
                eintrag = zeile[2];
                int jetzt;
                int t, m, j;
                String tmj,d;

               
                t = DateTime.Now.Day;
                m = DateTime.Now.Month;
                j = DateTime.Now.Year;

                m = Convert.ToInt16(m);
                t = Convert.ToInt16(t);
               
                If (t <= 9)
                {
                    t = Convert.ToString(t);
                    t = "0" + t;
                }
               
                If (m <= 9)
                {
                    m = 0 + m;
                }

                //m = Convert.ToString(m);
                //t = Convert.ToString(t);


                tmj = Convert.ToString(t) + "." + Convert.ToString(m) + "." + Convert.ToString(j);
                d = Convert.ToString(datum);

                MessageBox.Show(tmj + "|" + d);
                If (d == tmj)
                {
                    
               
                    
                   // zeit = ((Convert.ToDouble (zeit) * 60) * 60);
                    jetzt = Convert.ToInt16(DateTime.Now.TimeOfDay) * 60 * 60;
                    MessageBox.Show(jetzt + " UND " + DateTime.Now.TimeOfDay);

                    If (zeit == Convert.ToString(DateTime.Now.TimeOfDay))
                    {
                        MessageBox.Show("in 5 mins ists soweit");

                    }
                }
                //zeit = zeit.Substring(3, 2);

            } While (reader.Peek() != -1);
            reader.Close();					

1:

datum = DateTime.Parse(zeile[0]) + DateTime.Parse(zeile[1]).TimeOfDay;