Advertisement
Not a member of Pastebin yet?
Sign Up,
it unlocks many cool features!
- 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 WindowsFormsApp1
- {
- public partial class Form1 : Form
- {
- public Form1()
- {
- InitializeComponent();
- listBox1.SelectionMode = SelectionMode.MultiExtended;
- }
- private void Button1_Click(object sender, EventArgs e)
- {
- if (textBox1.Text != "")
- {
- listBox1.Items.Add(textBox1.Text);
- textBox1.Clear();
- }
- else
- {
- MessageBox.Show("TextBox пуст", "Ошибка");
- }
- }
- private void Button2_Click(object sender, EventArgs e)
- {
- if (listBox1.SelectedItems.Count>0)
- {
- string s = "";
- int k = 0;
- foreach (var item in listBox1.SelectedItems)
- {
- if (Int32.TryParse(item.ToString(), out int num))
- {
- if (num % 2 == 0)
- {
- s += $"{num.ToString()}\n";
- k++;
- }
- }
- }
- if (k != 0) MessageBox.Show(s);
- else MessageBox.Show("Нет четных выделенных элементов", "Сообщение");
- }
- else
- {
- MessageBox.Show("Нет выделенных элементов", "Ошибка");
- }
- }
- }
- }
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement