III.3- Using Checked Listbox Control

III.3- Using Checked Listbox Control

The CheckedListBox control gives you all the capability of a list box and also allows you to display a check mark next to the items in the list box.

Check out the example below:

Source Code:

private void Form1_Load(object sender, EventArgs e)

        {

            for (int i = 1; 1 < 11; i++)

                list1.Items.Add("item" + i.ToString());

        }

 

        private void chkSelAll_CheckedChanged(object sender, EventArgs e)

        {

            for (int i = 0; i < list1.Items.Count; i++)

                list1.SetItemChecked(i, chkSelAll.Checked);

        }

 

        private void chkRemoveAll_CheckedChanged(object sender, EventArgs e)

        {

            for (int i = 0; i < list2.Items.Count; i++)

                list2.SetItemChecked(i, chkRemoveAll.Checked);

        }

 

        private void btnAdd_Click(object sender, EventArgs e)

        {

            for (int i = list1.Items.Count -1; i>-1; i--)

            {

                if(list1.GetItemChecked(i) == true)

                {

                    list2.Items.Add(list1.Items[i].ToString());

                    list1.Items.RemoveAt(i);

                }

            }

            list2.Sorted = true;

        }

 

        private void btnRemove_Click(object sender, EventArgs e)

        {

            for(int i =list2.Items.Count-1; i> -1; i--)

            {

                if (list2.GetItemChecked(i) == true)

                {

                    list2.Items.Add(list2.Items[i].ToString());

                    list2.Items.RemoveAt(i);

                }

            }

            list1.Sorted = true;

        }

 

        private void btnClose_Click(object sender, EventArgs e)

        {

            this.Close();

        }

    }