当用户在组合框中开始输入时,自动完成会启动并显示最接近的匹配项。我想做的是让下拉列表也变得可见,就像用户点击了向下箭头一样。这可以实现吗?如果可以,怎么做?
<ComboBox x:Name="MyComboBox"
IsEditable="True"
IsReadOnly="False"
KeyDown="MyComboBox_KeyDown"/>
private void MyComboBox_KeyDown(object sender, KeyEventArgs e) {
if (MyComboBox.Text.Length > 0)
MyComboBox.IsDropDownOpen = true;
}
ComboBox comboBox = new ComboBox;
comboBox.DroppedDown = true;