How Would I Create A Reminder System?

Question

1.00/5 (1 vote)

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I want to have a long textbox where the user types the reminder, and at the end of the long textbox, in a short textbox, the user types a time like 10:34:15 AM and then they click a button named "ADD REMINDER" and after they add it, at the time in the short textbox, the reminder goes off in a message box

[EDIT OP code from solution]

C#

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

namespace Calander
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            timer1.Start();
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            label1.Text = System.DateTime.Now.ToLongTimeString();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            MessageBox.Show("The Reminder:\n" +"~" + textBox1.Text +"~" + "\nWas Added To Alert At:\n" + dateTimePicker1.Text, "Reminder Was Added", MessageBoxButtons.OK, MessageBoxIcon.Information);
            dateTimePicker1.Text = MessageBox.Show(textBox1.Text +);
        }
    }
}

Posted 12-Apr-14 5:36am

Member 10640251

Updated 12-Apr-14 7:27am

CHill60

v2

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Comments

PIEBALDconsult 12-Apr-14 12:22pm

Use a DateTimePicker for date/time values; not a TextBox.
Are you expecting the user to keep the application running constantly?

Member 10640251 12-Apr-14 12:26pm

No

CHill60 12-Apr-14 12:42pm

What have you tried so far?

Member 10640251 12-Apr-14 12:46pm

Well I added the DateTimePicker, and I tried getting its time, and then sending messagebox with textbox's text

Member 10640251 12-Apr-14 12:51pm

Nothing worked

[no name] 12-Apr-14 13:02pm

Telling us "nothing worked" is not at all helpful. MessageBox.Show(yourTextbox.Text) will show the text in yourTextbox in a messagebox. You need to show us the code that you have written and tell us exactly what the problem is. We can't see your code or read your mind.

Member 10640251 12-Apr-14 13:14pm

There, posted it

[no name] 12-Apr-14 13:16pm

Okay.... and? How is that a solution to your problem? You still need to tell us what is wrong with your code....we can't see what it is that you see on your screen.

Member 10640251 12-Apr-14 13:25pm

I get errors here: dateTimePicker1.Text = MessageBox.Show(textBox1.Text +);

[no name] 12-Apr-14 13:20pm

What is it that you think "MessageBox.Show(textBox1.Text +);" is going to do? Get rid of the '+' and try again. Don't you think that it would have been a good idea to share the errors that you was getting with us instead of us having to go back and forth dragging information out of you?

Member 10640251 12-Apr-14 13:26pm

I did that, and still error

[no name] 12-Apr-14 13:31pm

Okay and? What is the error that you get now?

Member 10640251 12-Apr-14 13:32pm

http://prntscr.com/39cfoc

[no name] 12-Apr-14 13:33pm

No that is not an error message at all.

Member 10640251 12-Apr-14 13:34pm

http://prntscr.com/39cgk5

[no name] 12-Apr-14 13:36pm

"http://prntscr.com/39cgk5" is not an error message either.

[no name] 12-Apr-14 13:32pm

Being that you cannot assign the result of a MessageBox to the text of a DateTimePicker, that is probably not going to happen.

Member 10640251 12-Apr-14 13:33pm

So, I wont be able to create a reminder system?

[no name] 12-Apr-14 13:35pm

Sure you can. I have no idea what it is that you think you are doing with "dateTimePicker1.Text = MessageBox.Show(textBox1.Text +);". It simply makes no sense.

Make that line read "MessageBox.Show(textBox1.Text +);" and your errors should go away.

Member 10640251 12-Apr-14 13:37pm

but that wont make it when the date comes, it wont send the message box

[no name] 12-Apr-14 13:40pm

Well you got that right. It wouldn't have done that anyway. You would need to put a check into your timer1_Tick event handler to check that the date is the right date for your reminder and show a message box then.

Member 10640251 12-Apr-14 13:41pm

Can you add me in Skype? im so confused

[no name] 12-Apr-14 13:45pm

No sorry. I can't teach you programming over Skype any more than you can learn programming in a forum posting. I am not sure what there is to be confused about. Read up about timers, and comparing DateTime variables.

CHill60 12-Apr-14 16:25pm

I've added some more help to my solution below, including a link to an article that does exactly what you are trying to do

Emre Ataseven 14-Apr-14 17:40pm

You need to read a "C# for beginners" book before start coding.

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CHill60 · Answer 1 · 2014-04-12T07:34:00

The line

C#

dateTimePicker1.Text = MessageBox.Show(textBox1.Text +);

is going to cause you two errors

1. There is a spurious + sign after textBox1.Text
2. MessageBox.Show does not return a string. Even if you add .ToString() to it you will then get an error from the dateTimePicker saying that the text you are trying to insert into it is not a valid datetime format
Change the line to

MessageBox.Show(textBox1.Text);

or preferably just remove it altogether - it's only repeating some of the stuff from the previous message

[EDIT - some further assistance for the OP]
Things to consider ...
Don't start your timer when you load the form, start it after the time has been changed by the user... and make sure it is enabled e.g.

C#

private void button1_Click(object sender, EventArgs e)
{
    myTimer.Enabled = true;
    myTimer.Start();
}

You actually only want the message box to appear if the time for the reminder has passed,
so you will need to compare the current date & time against that set in the datetimepicker e.g.

C#

if (DateTime.Now >= this.dateTimePicker2.Value)
    {
		MessageBox.Show(this.textBox1.Text);
		// This next bit stops the message box reappearing again
		myTimer.Enabled = false;
	}

Finally, make sure your DateTimePicker is set to the correct format

C#

dateTimePicker2.Format = DateTimePickerFormat.Time;

If you are still struggling then have a read of this CodeProject article Use a timer to create a simple alarm application[^]