I have two listboxes and I want to add an for each item from listbox1 to listbox2 in order. I mean I want Listbox2 shows the previous item value of the listbox1 item.How can I erase or hide the repetating items as you see in below?
For example;
Listbox1 Listbox2
0 -
1 0
2 1
3 2
4 3
... ...
Here is my code;
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 DistanceExample
{
public partial class Form1 : Form
{
int i;
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
timer1.Enabled = true;
}
private void button2_Click(object sender, EventArgs e)
{
timer1.Enabled = false;
}
private void timer1_Tick(object sender, EventArgs e)
{
i++;
foreach (var item in listBox1.Items)
{
listBox2.Items.Add(item);
}
listBox1.Items.Add(i);
}
}
}
Just remove the items in listBox2
with the Clear method:
private void timer1_Tick(object sender, EventArgs e)
{
i++;
// remove old items
listBox2.Items.Clear();
foreach (var item in listBox1.Items)
{
listBox2.Items.Add(item);
}
listBox1.Items.Add(i);
}
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