private void comboBox1_TextChanged(object sender, EventArgs e)
{
if (comboBox1.Text.Length > 0)
{
comboBox1.DroppedDown = true;
StringBuilder sb = new StringBuilder();
string[] strs = comboBox1.Text.Split('@');
for (int i = 0; i < address.Length; i++)
{
comboBox1.Items[i] = String.Format("{0}{1}", strs.Length > 0 ? strs[0] : "", address[i]);
}
comboBox1.SelectedIndex = 0;
}
else
{
comboBox1.DroppedDown = false;
for (int i = 0; i < address.Length; i++)
{
comboBox1.Items[i] = String.Format("{0}", address[i]);
}
}
}