well guys , i want to make a read and write from textfile ...
but the problem is when i click the calendar, and click create now(button 1), it cant work... if i didnt click the calendar, it works well.. so how to solve this problem anyone?

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;

namespace Timetable
{
    public partial class Form1 : Form
    {
        private string[,] m_strdata = new string[11, 5];//11-events, 5[m_intNumberOfEvents]
        private int m_intNumberOfEvents;
        //write the text to a file
        private StreamWriter m_objOutput = File.AppendText("1.txt");// add line to write instead of rewrite
        //initalize StreamReader to read from file
        StreamReader objInput;

        private void CreateEventList()
        {
            int intCount;
            //stores event info in array m_strdata
            ExtractData(mvwDate.SelectionStart);
            //remove combobox items
            cboevent.Items.Clear();
            //add each new event name to comboBox
           
            if (m_intNumberOfEvents > 0)
            {
                for (intCount = 0; intCount < m_intNumberOfEvents;
                    intCount++)
                {
                    //extract and display event name
                    cboevent.Items.Add(m_strdata[intCount, 3]);//1-time,2- price,3- name,4-description
                }
                //inform user that events are scheduled
                cboevent.Text = "- " + Convert.ToString(m_intNumberOfEvents) + " Events found -";
                txtDescription.Text = "Pick an event.";
            }

            //inform user that no events are scheduled
            else
            {
                cboevent.Text = "-No Events-";
                txtDescription.Text = "No events today";
            }
        } // end method CreateEventList

        // extracts event data for a specified day from calendar.txt
        // and returns number of events during that day
        private void ExtractData(DateTime dtmDay)
        {
            //set to selected date in Mobthalendar control
            int intChosenDay = dtmDay.Day;
            int intFileDay;//day of event from file
            int intLineNumbers;//counts lines to skip
            objInput = new StreamReader("calendar.txt");
            m_intNumberOfEvents = 0;//set number of events to 0
            //read first line  before entering loop
            string strline = objInput.ReadLine();

            //loop though lines in file
            while (objInput.Peek() > -1 &&
                m_intNumberOfEvents < 11)//11-events
            {
                intFileDay = Int32.Parse(strline);//extract day
                //if event scheduled for specified day,
                //store information
                if (intFileDay == intChosenDay)
                {
                    m_strdata[m_intNumberOfEvents, 0] = strline;
                    m_strdata[m_intNumberOfEvents, 1] = objInput.ReadLine();
                    m_strdata[m_intNumberOfEvents, 2] = objInput.ReadLine();
                    m_strdata[m_intNumberOfEvents, 3] = objInput.ReadLine();
                    m_strdata[m_intNumberOfEvents, 4] = objInput.ReadLine();
                    //m_strdata[m_intNumberOfEvents, 5] = objInput.ReadLine();//sensitive-5 lines
                    m_intNumberOfEvents++;
                }
                else
                {
                    //skip to next event in file 
                    for (intLineNumbers = 0; intLineNumbers <= 3; intLineNumbers++)//<=4-5 lines
                        strline = objInput.ReadLine();
                }
                //read day of next events in file
                strline = objInput.ReadLine();
            }//end while 
        }
        public Form1()
        {
            InitializeComponent();
        }
        // populates ComboBox with current day's events (if any)
        
        private void Form1_Load(object sender, EventArgs e)
        {
            CreateEventList();
            btncreate.Enabled = false;
            txtcost.Enabled = false;
            txtday.Enabled = false;
            txtname.Enabled = false;
            txttime.Enabled = false;
            txtwritedescription.Enabled = false;
        }

        private void mvwDate_DateChanged(object sender, DateRangeEventArgs e)
        {
            //displayed any events for the specified date in ComboBox
            CreateEventList();
        }

        private void cboevent_SelectedIndexChanged(object sender, EventArgs e)
        {
            //place time, price and desciption of event in textbox
            txtDescription.Text =
                m_strdata[cboevent.SelectedIndex, 1];
            txtDescription.Text += "\r\n" +"$"+
              m_strdata[cboevent.SelectedIndex, 2];
            txtDescription.Text += "\r\n" +
                m_strdata[cboevent.SelectedIndex, 4];
        }
        private void clearuserinput()
         {
            txtcost.Clear();
            txtday.Clear();
            txtname.Clear();
            txttime.Clear();
            txtwritedescription.Clear();
        }
        private void btncreate_Click(object sender, EventArgs e)
        {  
              m_objOutput.WriteLine(txtday.Text);
              m_objOutput.WriteLine(txttime.Text);
              m_objOutput.WriteLine(txtcost.Text);
              m_objOutput.WriteLine(txtname.Text);
              m_objOutput.WriteLine(txtwritedescription.Text);
              clearuserinput();
              objInput.Close();
              m_objOutput.Close();
              m_objOutput = File.AppendText("1.txt");
              objInput = new StreamReader("calendar.txt");
        }

        private void button1_Click(object sender, EventArgs e)
        {
            objInput.Close();
            m_objOutput.Close();
            objInput = new StreamReader("1.txt");
            m_objOutput = File.AppendText("calendar.txt");
            btncreate.Enabled = true;
            txtcost.Enabled = true;
            txtday.Enabled = true;
            txtname.Enabled = true;
            txttime.Enabled = true;
            txtwritedescription.Enabled =true;
        }
    }
}

well i think when i click the dates of the calendar, it uses the data from calendar.txt ....
so is there other ways of closing the thing(temporary)? or add some codes to overight the codes?

well i tried it sort of worked....
the problem is that if i clicked the days twice from the calendar, it doesnt worked...
so how to solve this?

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;

namespace Timetable
{
    public partial class Form1 : Form
    {
        private string[,] m_strdata = new string[11, 5];//11-events, 5[m_intNumberOfEvents]
        private int m_intNumberOfEvents;
        //write the text to a file
        private StreamWriter m_objOutput = File.AppendText("1.txt");// add line to write instead of rewrite
        //initalize StreamReader to read from file
        StreamReader objInput;
        int x=0;

        private void CreateEventList()
        {
            int intCount;
            //stores event info in array m_strdata
            ExtractData(mvwDate.SelectionStart);
            //remove combobox items
            cboevent.Items.Clear();
            //add each new event name to comboBox
           
            if (m_intNumberOfEvents > 0)
            {
                for (intCount = 0; intCount < m_intNumberOfEvents;
                    intCount++)
                {
                    //extract and display event name
                    cboevent.Items.Add(m_strdata[intCount, 3]);//1-time,2- price,3- name,4-description
                }
                //inform user that events are scheduled
                cboevent.Text = "- " + Convert.ToString(m_intNumberOfEvents) + " Events found -";
                txtDescription.Text = "Pick an event.";
            }

            //inform user that no events are scheduled
            else
            {
                cboevent.Text = "-No Events-";
                txtDescription.Text = "No events today";
            }
        } // end method CreateEventList

        // extracts event data for a specified day from calendar.txt
        // and returns number of events during that day
        private void ExtractData(DateTime dtmDay)
        {
            //set to selected date in Mobthalendar control
            int intChosenDay = dtmDay.Day;
            int intFileDay;//day of event from file
            int intLineNumbers;//counts lines to skip
            objInput = new StreamReader("calendar.txt");
            m_intNumberOfEvents = 0;//set number of events to 0
            //read first line  before entering loop
            string strline = objInput.ReadLine();

            //loop though lines in file
            while (objInput.Peek() > -1 &&
                m_intNumberOfEvents < 11)//11-events
            {
                x = 1; 
                intFileDay = Int32.Parse(strline);//extract day
                //if event scheduled for specified day,
                //store information
                if (intFileDay == intChosenDay)
                {
                    m_strdata[m_intNumberOfEvents, 0] = strline;
                    m_strdata[m_intNumberOfEvents, 1] = objInput.ReadLine();
                    m_strdata[m_intNumberOfEvents, 2] = objInput.ReadLine();
                    m_strdata[m_intNumberOfEvents, 3] = objInput.ReadLine();
                    m_strdata[m_intNumberOfEvents, 4] = objInput.ReadLine();
                    //m_strdata[m_intNumberOfEvents, 5] = objInput.ReadLine();//sensitive-5 lines
                    m_intNumberOfEvents++;
                }
                else
                {
                    //skip to next event in file 
                    for (intLineNumbers = 0; intLineNumbers <= 3; intLineNumbers++)//<=4-5 lines
                        strline = objInput.ReadLine();
                }
                //read day of next events in file
                strline = objInput.ReadLine();
                
            }//end while 
        }
        public Form1()
        {
            InitializeComponent();
        }
        // populates ComboBox with current day's events (if any)
        
        private void Form1_Load(object sender, EventArgs e)
        {
            //CreateEventList();- unable to use for this program
            btncreatelater.Enabled = false;
            btncreatenow.Enabled = false;
            btnclear.Enabled = false;
            txtcost.Enabled = false;
            updDay.Enabled = false;
            txtname.Enabled = false;
            dtpTime.Enabled = false;
            txtwritedescription.Enabled = false;
        }

        private void cboevent_SelectedIndexChanged(object sender, EventArgs e)
        {
            //place time, price and desciption of event in textbox
            txtDescription.Text =
                m_strdata[cboevent.SelectedIndex, 1];
            txtDescription.Text += "\r\n" +"$"+
              m_strdata[cboevent.SelectedIndex, 2];
            txtDescription.Text += "\r\n" +
                m_strdata[cboevent.SelectedIndex, 4];
        }
        private void clearuserinput()
         {
            txtcost.Clear();
            txtname.Clear();
            updDay.Text = ("1");
            dtpTime.Text=("12:00 AM");
            txtwritedescription.Clear();
            txtcost.Enabled = false;
            updDay.Enabled = false;
            txtname.Enabled = false;
            dtpTime.Enabled = false;
            txtwritedescription.Enabled = false;
        }
        private void btncreate_Click(object sender, EventArgs e)
        {
              mvwDate.Enabled = true;
              btncreatenew.Enabled = true;
              btncreatenow.Enabled = false;
              btnclear.Enabled = false;
              m_objOutput.WriteLine(updDay.Text);
              m_objOutput.WriteLine(dtpTime.Text);
              m_objOutput.WriteLine(txtcost.Text);
              m_objOutput.WriteLine(txtname.Text);
              m_objOutput.WriteLine(txtwritedescription.Text);
              objInput.Close();
              m_objOutput.Close();
              m_objOutput = File.AppendText("2.txt");
              x = 0;
              clearuserinput();//disable , clearing to clear away the datas and to prevent errors
              //eg application is being used by others...
              cboevent.Enabled = true;
              txtDescription.Enabled = true;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (x == 1)
            {
                objInput.Dispose();
                objInput.Close(); 
            }//insurance that got 2 choices
            //1-read then create , have to close objinput
            //0-create, dun have to close objinput
            /********************************************/
            //remove combobox items
            cboevent.Items.Clear();
            cboevent.Text = "";
            cboevent.Enabled = false;
            mvwDate.Enabled = false;
            txtDescription.Clear();
            txtDescription.Enabled = false;
            /*********************************************/
            //disable , clearing and overwriting to clear away the datas and to prevent errors
            //eg application is being used by others...
            m_objOutput.Close();
            objInput = new StreamReader("1.txt");
            m_objOutput = File.AppendText("calendar.txt");
            btncreatelater.Enabled = true;
            btncreatenew.Enabled = false;
            btncreatenow.Enabled = true;
            btnclear.Enabled = true;
            txtcost.Enabled = true;
            updDay.Enabled = true;
            txtname.Enabled = true;
            dtpTime.Enabled = true;
            txtwritedescription.Enabled =true;
        }

        private void btnclear_Click(object sender, EventArgs e)
        {
            if (MessageBox.Show("Warming, doing this will erase all the data that is stored inside the calendar!!!",
            "Clear", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning) == DialogResult.OK)
            {
                m_objOutput.Close();
                objInput = new StreamReader("1.txt");
                m_objOutput = new StreamWriter("calendar.txt");
                m_objOutput.Write("");
                m_objOutput.Close();
            }
            else 
            {
                MessageBox.Show("You have make the right choice ^_^.");
            }
        }

        private void mvwDate_DateSelected(object sender, DateRangeEventArgs e)
        {
            //displayed any events for the specified date in ComboBox
            CreateEventList();
        }

        private void btncreatelater_Click(object sender, EventArgs e)
        {
          
            btncreatelater.Enabled = false;
            btnclear.Enabled = false;
            btncreatenow.Enabled = false;
            btncreatenew.Enabled = true;
            mvwDate.Enabled = true;
            objInput.Close();
            m_objOutput.Close();
            m_objOutput = File.AppendText("2.txt");
            x = 1;
            clearuserinput();//disable , clearing to clear away the datas and to prevent errors
            //eg application is being used by others...
            cboevent.Enabled = true;
            txtDescription.Enabled = true;
        }
    }
}

added some new features like clear and create later...

well i tried and edit some .. it works perfect

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;

namespace Timetable
{
    public partial class Form1 : Form
    {
        private string[,] m_strdata = new string[11, 5];//11-events, 5[m_intNumberOfEvents]
        private int m_intNumberOfEvents;
        //write the text to a file
        private StreamWriter objOutput = File.AppendText("1.txt");// add line to write instead of rewrite
        //initalize StreamReader to read from file
        StreamReader objInput;

        private void CreateEventList()
        {
            int intCount;
            //stores event info in array m_strdata
            ExtractData(mvwDate.SelectionStart);
            //remove combobox items
            cboevent.Items.Clear();
            //add each new event name to comboBox
           
            if (m_intNumberOfEvents > 0)
            {
                for (intCount = 0; intCount < m_intNumberOfEvents;
                    intCount++)
                {
                    //extract and display event name
                    cboevent.Items.Add(m_strdata[intCount, 3]);//1-time,2- price,3- name,4-description
                }
                //inform user that events are scheduled
                cboevent.Text = "- " + Convert.ToString(m_intNumberOfEvents) + " Events found -";
                txtDescription.Text = "Pick an event.";
            }

            //inform user that no events are scheduled
            else
            {
                cboevent.Text = "-No Events-";
                txtDescription.Text = "No events today";
            }
        } // end method CreateEventList

        // extracts event data for a specified day from calendar.txt
        // and returns number of events during that day
        private void ExtractData(DateTime dtmDay)
        {
            //set to selected date in Mobthalendar control
            int intChosenDay = dtmDay.Day;
            int intFileDay;//day of event from file
            int intLineNumbers;//counts lines to skip
            objInput = new StreamReader("calendar.txt");
            m_intNumberOfEvents = 0;//set number of events to 0
            //read first line  before entering loop
            string strline = objInput.ReadLine();

            //loop though lines in file
            while (objInput.Peek() > -1 &&
                m_intNumberOfEvents < 11)//11-events
            {
                
                intFileDay = Int32.Parse(strline);//extract day
                //if event scheduled for specified day,
                //store information
                if (intFileDay == intChosenDay)
                {
                    m_strdata[m_intNumberOfEvents, 0] = strline;
                    m_strdata[m_intNumberOfEvents, 1] = objInput.ReadLine();
                    m_strdata[m_intNumberOfEvents, 2] = objInput.ReadLine();
                    m_strdata[m_intNumberOfEvents, 3] = objInput.ReadLine();
                    m_strdata[m_intNumberOfEvents, 4] = objInput.ReadLine();
                    //m_strdata[m_intNumberOfEvents, 5] = objInput.ReadLine();//sensitive-5 lines
                    m_intNumberOfEvents++;
                }
                else
                {
                    //skip to next event in file 
                    for (intLineNumbers = 0; intLineNumbers <= 3; intLineNumbers++)//<=4-5 lines
                        strline = objInput.ReadLine();
                }
                //read day of next events in file
                strline = objInput.ReadLine();
            }//end while
            objInput.Dispose();//to prevent open txt file X times of the clicking of calendar dates.
        }
        public Form1()
        {
            InitializeComponent();
        }
        
        private void Form1_Load(object sender, EventArgs e)
        {
            CreateEventList();
            btncreatelater.Enabled = false;
            btncreatenow.Enabled = false;
            btnclear.Enabled = false;
            txtcost.Enabled = false;
            updDay.Enabled = false;
            txtname.Enabled = false;
            dtpTime.Enabled = false;
            txtwritedescription.Enabled = false;
        }

        private void cboevent_SelectedIndexChanged(object sender, EventArgs e)
        {
            //place time, price and desciption of event in textbox
            txtDescription.Text =
                m_strdata[cboevent.SelectedIndex, 1];
            txtDescription.Text += "\r\n" +"$"+
              m_strdata[cboevent.SelectedIndex, 2];
            txtDescription.Text += "\r\n" +
                m_strdata[cboevent.SelectedIndex, 4];
        }
        private void clearuserinput()
         {
            txtcost.Clear();
            txtname.Clear();
            updDay.Text = ("1");
            dtpTime.Text=("12:00 AM");
            txtwritedescription.Clear();
            txtcost.Enabled = false;
            updDay.Enabled = false;
            txtname.Enabled = false;
            dtpTime.Enabled = false;
            txtwritedescription.Enabled = false;
        }
        private void btncreate_Click(object sender, EventArgs e)
        {
              mvwDate.Enabled = true;
              btncreatenew.Enabled = true;
              btncreatenow.Enabled = false;
              btnclear.Enabled = false;
              btncreatelater.Enabled = false;
              objOutput.WriteLine(updDay.Text);
              objOutput.WriteLine(dtpTime.Text);
              objOutput.WriteLine(txtcost.Text);
              objOutput.WriteLine(txtname.Text);
              objOutput.WriteLine(txtwritedescription.Text);
              objInput.Close();
              objOutput.Close();
              objOutput = File.AppendText("1.txt");
              clearuserinput();//disable , clearing to clear away the datas and to prevent errors
              //eg application is being used by others...
              cboevent.Enabled = true;
              txtDescription.Enabled = true;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            
            /********************************************/
            //remove combobox items
            cboevent.Items.Clear();
            cboevent.Text = "";
            cboevent.Enabled = false;
            mvwDate.Enabled = false;
            txtDescription.Clear();
            txtDescription.Enabled = false;
            /*********************************************/
            //disable , clearing and overwriting to clear away the datas and to prevent errors
            //eg application is being used by others...
            objOutput.Close();
            objInput = new StreamReader("1.txt");
            objInput.Close();
            objOutput = File.AppendText("calendar.txt");
            btncreatelater.Enabled = true;
            btncreatenew.Enabled = false;
            btncreatenow.Enabled = true;
            btnclear.Enabled = true;
            txtcost.Enabled = true;
            updDay.Enabled = true;
            txtname.Enabled = true;
            dtpTime.Enabled = true;
            txtwritedescription.Enabled =true;
        }

        private void btnclear_Click(object sender, EventArgs e)
        {
            if (MessageBox.Show("Warming, doing this will erase all the data that is stored inside the calendar!!!",
            "Clear", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning) == DialogResult.OK)
            {
                objOutput.Close();
                objInput = new StreamReader("1.txt");
                objOutput = new StreamWriter("calendar.txt");//overwriting
                objOutput.Write("");
                objInput.Close();
                objOutput.Close();
                MessageBox.Show("Data cleared.");
            }
            else 
            {
                MessageBox.Show("You have make the right choice ^_^.");
            }
        }

        private void mvwDate_DateSelected(object sender, DateRangeEventArgs e)
        {
            //displayed any events for the specified date in ComboBox
            CreateEventList();
        }

        private void btncreatelater_Click(object sender, EventArgs e)
        {
          
            btncreatelater.Enabled = false;
            btnclear.Enabled = false;
            btncreatenow.Enabled = false;
            btncreatenew.Enabled = true;
            mvwDate.Enabled = true;
            objOutput.Dispose();
            objOutput.Close();
            objInput = new StreamReader("calendar.txt");
            objInput.Close();
            objOutput = File.AppendText("1.txt");
            clearuserinput();//disable , clearing to clear away the datas and to prevent errors
            //eg application is being used by others...
            cboevent.Enabled = true;
            txtDescription.Enabled = true;
        }
    }
}

//objInput = new StreamReader("calendar.txt");
//objOutput = File.AppendText("1.txt");
//objInput = new StreamReader("1.txt");
//objOutput = File.AppendText("calendar.txt");
//these codes are just to swap places so that the users can key and read at the same txt file("calendar.txt").

sry i remodified again..
this time sure works 99%(1% maybe contain some error which i may leftout during the test run...)

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;

namespace Timetable
{
    public partial class Form1 : Form
    {
        private string[,] m_strdata = new string[11, 5];//11-events, 5[m_intNumberOfEvents]
        private int m_intNumberOfEvents;
        //write the text to a file
        private StreamWriter objOutput = File.AppendText("1.txt");// add line to write instead of rewrite
        //initalize StreamReader to read from file
        StreamReader objInput;

        private void CreateEventList()
        {
            int intCount;
            //stores event info in array m_strdata
            ExtractData(mvwDate.SelectionStart);
            //remove combobox items
            cboevent.Items.Clear();
            //add each new event name to comboBox
           
            if (m_intNumberOfEvents > 0)
            {
                for (intCount = 0; intCount < m_intNumberOfEvents;
                    intCount++)
                {
                    //extract and display event name
                    cboevent.Items.Add(m_strdata[intCount, 3]);//1-time,2- price,3- name,4-description
                }
                //inform user that events are scheduled
                cboevent.Text = "- " + Convert.ToString(m_intNumberOfEvents) + " Events found -";
                txtDescription.Text = "Pick an event.";
            }

            //inform user that no events are scheduled
            else
            {
                cboevent.Text = "-No Events-";
                txtDescription.Text = "No events today";
            }
        } // end method CreateEventList

        // extracts event data for a specified day from calendar.txt
        // and returns number of events during that day
        private void ExtractData(DateTime dtmDay)
        {
            //set to selected date in Mobthalendar control
            int intChosenDay = dtmDay.Day;
            int intFileDay;//day of event from file
            int intLineNumbers;//counts lines to skip
            objInput = new StreamReader("calendar.txt");
            m_intNumberOfEvents = 0;//set number of events to 0
            //read first line  before entering loop
            string strline = objInput.ReadLine();

            //loop though lines in file
            while (objInput.Peek() > -1 &&
                m_intNumberOfEvents < 11)//11-events
            {
                
                intFileDay = Int32.Parse(strline);//extract day
                //if event scheduled for specified day,
                //store information
                if (intFileDay == intChosenDay)
                {
                    m_strdata[m_intNumberOfEvents, 0] = strline;
                    m_strdata[m_intNumberOfEvents, 1] = objInput.ReadLine();
                    m_strdata[m_intNumberOfEvents, 2] = objInput.ReadLine();
                    m_strdata[m_intNumberOfEvents, 3] = objInput.ReadLine();
                    m_strdata[m_intNumberOfEvents, 4] = objInput.ReadLine();
                    //m_strdata[m_intNumberOfEvents, 5] = objInput.ReadLine();//sensitive-5 lines
                    m_intNumberOfEvents++;
                }
                else
                {
                    //skip to next event in file 
                    for (intLineNumbers = 0; intLineNumbers <= 3; intLineNumbers++)//<=4-5 lines
                        strline = objInput.ReadLine();
                }
                //read day of next events in file
                strline = objInput.ReadLine();
            }//end while
            objInput.Dispose();//to prevent open txt file X times of the clicking of calendar dates.
        }
        public Form1()
        {
            InitializeComponent();
        }
        
        private void Form1_Load(object sender, EventArgs e)
        {
            //CreateEventList();
            btncreatelater.Enabled = false;
            btncreatenow.Enabled = false;
            btnclear.Enabled = false;
            txtcost.Enabled = false;
            updDay.Enabled = false;
            txtname.Enabled = false;
            dtpTime.Enabled = false;
            txtwritedescription.Enabled = false;
        }

        private void cboevent_SelectedIndexChanged(object sender, EventArgs e)
        {
            //place time, price and desciption of event in textbox
            txtDescription.Text =
                m_strdata[cboevent.SelectedIndex, 1];
            txtDescription.Text += "\r\n" +"$"+
              m_strdata[cboevent.SelectedIndex, 2];
            txtDescription.Text += "\r\n" +
                m_strdata[cboevent.SelectedIndex, 4];
        }
        private void clearuserinput()
         {
            txtcost.Clear();
            txtname.Clear();
            updDay.Text = ("1");
            dtpTime.Text=("12:00 AM");
            txtwritedescription.Clear();
            txtcost.Enabled = false;
            updDay.Enabled = false;
            txtname.Enabled = false;
            dtpTime.Enabled = false;
            txtwritedescription.Enabled = false;
        }
        private void btncreate_Click(object sender, EventArgs e)
        {
              objOutput = File.AppendText("calendar.txt");
              mvwDate.Enabled = true;
              btncreatenew.Enabled = true;
              btncreatenow.Enabled = false;
              btnclear.Enabled = false;
              btncreatelater.Enabled = false;
              objOutput.WriteLine(updDay.Text);
              objOutput.WriteLine(dtpTime.Text);
              objOutput.WriteLine(txtcost.Text);
              objOutput.WriteLine(txtname.Text);
              objOutput.WriteLine(txtwritedescription.Text);
              objInput.Close();
              objOutput.Close();
              objOutput = File.AppendText("1.txt");
              clearuserinput();//disable , clearing to clear away the datas and to prevent errors
              //eg application is being used by others...
              cboevent.Enabled = true;
              txtDescription.Enabled = true;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            
            /********************************************/
            //remove combobox items
            cboevent.Items.Clear();
            cboevent.Text = "";
            cboevent.Enabled = false;
            mvwDate.Enabled = false;
            txtDescription.Clear();
            txtDescription.Enabled = false;
            /*********************************************/
            //disable , clearing and overwriting to clear away the datas and to prevent errors
            //eg application is being used by others...
            objOutput.Close();
            objInput = new StreamReader("1.txt");
            objInput.Close();
            btncreatelater.Enabled = true;
            btncreatenew.Enabled = false;
            btncreatenow.Enabled = true;
            btnclear.Enabled = true;
            txtcost.Enabled = true;
            updDay.Enabled = true;
            txtname.Enabled = true;
            dtpTime.Enabled = true;
            txtwritedescription.Enabled =true;
        }

        private void btnclear_Click(object sender, EventArgs e)
        {
            if (MessageBox.Show("Warming, doing this will erase all the data that is stored inside the calendar!!!",
            "Clear", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning) == DialogResult.OK)
            {
                objInput = new StreamReader("1.txt");
                objOutput = new StreamWriter("calendar.txt");//overwriting
                objOutput.Write("");
                objInput.Close();
                objOutput.Close();
                MessageBox.Show("Data cleared.");
            }
            else 
            {
                MessageBox.Show("You have make the right choice ^_^.");
            }
        }

        private void mvwDate_DateSelected(object sender, DateRangeEventArgs e)
        {
            //displayed any events for the specified date in ComboBox
            CreateEventList();
        }

        private void btncreatelater_Click(object sender, EventArgs e)
        {
          
            btncreatelater.Enabled = false;
            btnclear.Enabled = false;
            btncreatenow.Enabled = false;
            btncreatenew.Enabled = true;
            mvwDate.Enabled = true;
            objOutput.Dispose();
            objOutput.Close();
            objInput = new StreamReader("calendar.txt");
            objInput.Close();
            objOutput = File.AppendText("1.txt");
            clearuserinput();//disable , clearing to clear away the datas and to prevent errors
            //eg application is being used by others...
            cboevent.Enabled = true;
            txtDescription.Enabled = true;
        }
    }
}

//objInput = new StreamReader("calendar.txt");
//objOutput = File.AppendText("1.txt");
//objInput = new StreamReader("1.txt");
//objOutput = File.AppendText("calendar.txt");
//these codes are just to swap places so that the users can key and read at the same txt file("calendar.txt").
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