日期:2014-05-18 浏览次数:20960 次
private void listBox1_MouseClick(object sender, MouseEventArgs e)
{
MessageBox.Show(this.listBox1.SelectedItem.ToString());
}
------解决方案--------------------
private void listBox1_MouseClick(object sender, MouseEventArgs e)
{
if (listBox1.SelectedItem != null)
{
MessageBox.Show(this.listBox1.SelectedItem.ToString());
}
}