public ListBoxExam()
{
listBox1 = new ListBox();
checkedListBox1 = new CheckedListBox();
txt_info = new TextBox();
listBox1.Parent = this;
listBox1.SetBounds(10, 10, 50, 100);
listBox1.SelectedIndexChanged += new EventHandler(SelectedIndexChanged);
checkedListBox1.Parent = this;
checkedListBox1.SetBounds(70, 10, 50, 100);
checkedListBox1.SelectedIndexChanged += new EventHandler(SelectedIndexChanged);
txt_info.Parent = this;
txt_info.SetBounds(10, 120, 300, 120);
txt_info.Multiline = true;
for (int i = 0; i < str1.Length; i++)
listBox1.Items.Add(str1[i]);
for (int j = 0; j < str2.Length; j++)
checkedListBox1.Items.Add(str2[j]);
}