C#•14mo ago

my windows form keeps crashing

I have created a TODO list through out windows form. (still learning) and every time i add a todo it seems to crash all the time. I have treid online bunch of time but cant seemt o find answer

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 TODO_LIST
{
    public partial class Form2 : Form
    {

        public Form2()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string textBox = textBox1.Text.ToString();
           
            if(Form1.instance.listBox.Items.Contains(textBox))
            {
                MessageBox.Show("Cannot contain same description!", "ERROR");
            }
            else
            {
                Form1.instance.listBox.Items.Add(textBox);
            }

        }


        private void textBox1_TextChanged(object sender, EventArgs e)
        {

            string description;
            do
            {
                description = textBox1.Text;
            }
            while (!isDescriptionValid(description));
            Form1.todo.Add(description);

        }

        bool isDescriptionValid(string description)
        {
            if (description == "") return false;
            if (Form1.todo.Contains(description)) return false;
            return true;
        }
    }
}

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 TODO_LIST
{
    public partial class Form2 : Form
    {

        public Form2()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string textBox = textBox1.Text.ToString();
           
            if(Form1.instance.listBox.Items.Contains(textBox))
            {
                MessageBox.Show("Cannot contain same description!", "ERROR");
            }
            else
            {
                Form1.instance.listBox.Items.Add(textBox);
            }

        }


        private void textBox1_TextChanged(object sender, EventArgs e)
        {

            string description;
            do
            {
                description = textBox1.Text;
            }
            while (!isDescriptionValid(description));
            Form1.todo.Add(description);

        }

        bool isDescriptionValid(string description)
        {
            if (description == "") return false;
            if (Form1.todo.Contains(description)) return false;
            return true;
        }
    }
}

15 Replies

LurkingPsychoOP•14mo ago

what form looks like :/

SG97•14mo ago

that's not a crash

if(Form1.instance.listBox.Items.Contains(textBox))
{
    MessageBox.Show("Cannot contain same description!", "ERROR");
}

if(Form1.instance.listBox.Items.Contains(textBox))
{
    MessageBox.Show("Cannot contain same description!", "ERROR");
}

which is exactly what it's supposed to do, as you have test already added

LurkingPsychoOP•14mo ago

i think its just visual studio... doesnt seem to crash when runned in exe file ;/ sorry if wasted time but i do have 1 question. is there a way to save progress. like when i reopen the windows from all todos are gone also nothing to do with that message box

SG97•14mo ago

definitely is possible to save the TODO items json/database

LurkingPsychoOP•14mo ago

oh.. im bad at those ;/

SG97•14mo ago

might want to start with saving a json file on disk

LurkingPsychoOP•14mo ago

oh ok

SG97•14mo ago

containing the current todo's then on launch, load up the json and create the todo's it contains

LurkingPsychoOP•14mo ago

that ganna be fun 😄 thanks