通过SelectedItemChanged事件用数据填充C1ComboBox

Visual Basic

Private Sub comboBox1_SelectedItemChanged(sender As Object, e As EventArgs) c1ComboBox2.Items.Clear()
If c1ComboBox1.SelectedItem.ToString() = "Pittsburgh" Then c1ComboBox2.Items.Add("Pittsburgh is known as the Steel City and the City of Bridges.") c1ComboBox2.Items.Add("Pittsburgh has 446 Bridges")
Else
c1ComboBox2.Items.Add("You did not select Pittsburgh.") End If
End Sub

C#

private void comboBox1_SelectedItemChanged(object sender, EventArgs e)
{
c1ComboBox2.Items.Clear(); if (c1ComboBox1.SelectedItem.ToString() == "Pittsburgh")
{
c1ComboBox2.Items.Add("Pittsburgh is known as the Steel City and the City of Bridges."); c1ComboBox2.Items.Add("Pittsburgh has 446 Bridges");
} else
{
c1ComboBox2.Items.Add("You did not select Pittsburgh.");

}
}