如何按类型获取WPF容器的子代?
我怎样才能类型的子控件ComboBox中MyContainerGrid的WPF?
<Grid x:Name="MyContainer">                        <Label Content="Name"  Name="label1"  />
    <Label Content="State" Name="label2"  />
    <ComboBox Height="23" HorizontalAlignment="Left" Name="comboBox1"/>
    <ComboBox Height="23" HorizontalAlignment="Left" Name="comboBox3" />
    <ComboBox Height="23" HorizontalAlignment="Left" Name="comboBox4" />
</Grid>
这行给我一个错误:
var myCombobox = this.MyContainer.Children.GetType(ComboBox);回答:
此扩展方法将递归搜索所需类型的子元素:
public static T GetChildOfType<T>(this DependencyObject depObj)     where T : DependencyObject
{
    if (depObj == null) return null;
    for (int i = 0; i < VisualTreeHelper.GetChildrenCount(depObj); i++)
    {
        var child = VisualTreeHelper.GetChild(depObj, i);
        var result = (child as T) ?? GetChildOfType<T>(child);
        if (result != null) return result;
    }
    return null;
}
因此,您可以要求使用MyContainer.GetChildOfType<ComboBox>()。
以上是 如何按类型获取WPF容器的子代? 的全部内容, 来源链接: utcz.com/qa/410285.html


