WPF递归获取窗体中指定控件类型列表

导言：记录WPF递归获取窗体中指定控件类型列表

在下面的代码我主要是对 TextBox 批量撤销、清除数据等操作

一、代码片段

• 前端代码

<Window x:Class="xx_MSS.Pages.View.InstrumentPages.InstrumentConnectConfigWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" Title="联机配置" Height="370" Width="370">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="63*"/>
            <ColumnDefinition Width="118*"/>
        </Grid.ColumnDefinitions>

        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition/>
            <RowDefinition/>
            <RowDefinition Height="2*"/>
        </Grid.RowDefinitions>

        <TextBlock Text="仪 器 IP：" Grid.Row="0" Grid.Column="0" Height="18" Margin="26,25,0,25" Width="99"/>
        <TextBox Grid.Row="0" Grid.Column="1" />

        <TextBlock Text="端 口：" Grid.Row="1" Grid.Column="0" Height="18" Width="95"/>
        <TextBox Grid.Row="1" Grid.Column="1" />

        <TextBlock Text="超时设置(秒)：" Grid.Row="2" Grid.Column="0" Height="18" />
        <TextBox Grid.Row="2" Grid.Column="1" />

        <Grid Grid.Row="3" Grid.Column="1">
            <Grid.ColumnDefinitions>
                <ColumnDefinition/>
                <ColumnDefinition/>
            </Grid.ColumnDefinitions>

            <Button Content="取消" Click="ConfigCancel" Grid.Column="0"/>
            <Button Content="确定" Click="ConfigYes" Grid.Column="1"/>
        </Grid>
    </Grid>
</pu:WindowX>

• 后端代码

using Panuon.UI.Silver;
using System.Windows;
using System.Windows.Controls;

namespace xx_MSS.Pages.View.InstrumentPages
{
    
    /// <summary>
    /// InstrumentConnectConfigWindow.xaml 的交互逻辑
    /// </summary>
    public partial class InstrumentConnectConfigWindow : WindowX
    {
    

        public InstrumentConnectConfigWindow()
        {
    
            InitializeComponent();
        }
         
        private void ConfigCancel(object sender, System.Windows.RoutedEventArgs e)
        {
                
            Grid gridPanel = this.Content as Grid;
            UIElementCollection UiChildren = gridPanel.Children;
            foreach (UIElement item in UiChildren )
            {
    
                if (item is TextBox)
                {
    
                    TextBox textBox = item as TextBox;
                    
                    //对每一个输入框批量操作
                    textBox.Undo();
                }
            }
        }

        private void ConfigYes(object sender, RoutedEventArgs e)
        {
    
            this.Close();
        }
    }
}

二、核心代码

//这里需要是布局器内部的元素-可以用foreach 也可以用for循环
Grid gridPanel = this.Content as Grid;
UIElementCollection UiChildren = gridPanel.Children;
foreach (UIElement item in UiChildren )
{
    
	if (item is TextBox)
	{
    
		TextBox textBox = item as TextBox;
                    
		//对每一个输入框批量操作
		textBox.Undo();
	}
}

//for循环版本
Grid gridPanel = this.Content as Grid;
UIElementCollection UiChildren = gridPanel.Children;
for(int i = 0; i< UiChildren.Count; i++)
{
    
	if (UiChildren[i] is TextBox)
	{
    
		TextBox textBox = UiChildren[i] as TextBox;
                    
		//对每一个输入框批量操作
		textBox.Undo();
	}
}