Czyszczenie jednej grupy textbox za jednym zamachem ?

Question

Witam! Kiedyś to znalazłem teraz nie mogę. Potrzebuje pod WPF znaleźć polecenie które wyczyści części "textboxów". Tylko te których nazwa zaczyna się od tbDane
Żeby np. nie pisać: 

{
tbDaneA1.Clear(); tbDaneB1.Clear(); tbDaneC1.Clear(); tbDaneAD1.Clear();
}

 

Answer 1

Przy pomocy: System.Linq i Where

using System.Linq;

 

Przykład

<Window x:Class="WpfApplication1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <Grid Name="gridMain">
        <TextBox Height="18" HorizontalAlignment="Left" Margin="29,20,0,0" Name="tbDaneA1" VerticalAlignment="Top" Width="69" Text="LoremA1" />
        <TextBox Height="18" HorizontalAlignment="Left" Margin="29,44,0,0" Name="tbDaneB1" VerticalAlignment="Top" Width="69" Text="LoremB1" />
        <TextBox Height="18" HorizontalAlignment="Left" Margin="29,68,0,0" Name="textBox3" VerticalAlignment="Top" Width="69" />
        <TextBox Height="18" HorizontalAlignment="Left" Margin="116,20,0,0" Name="tbDaneC1" VerticalAlignment="Top" Width="69" Text="LoremC1" />
        <TextBox Height="18" HorizontalAlignment="Left" Margin="116,44,0,0" Name="textBox5" VerticalAlignment="Top" Width="69" />
        <TextBox Height="18" HorizontalAlignment="Left" Margin="116,68,0,0" Name="textBox6" VerticalAlignment="Top" Width="69" />
        <Button Content="Button" Height="23" HorizontalAlignment="Left" Margin="212,20,0,0" Name="button1" VerticalAlignment="Top" Width="75" Click="button1_Click" />
    </Grid>
</Window>

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            var textBoxesToClear = gridMain.Children
                                           .OfType<TextBox>()
                                           .Where(tb => tb.Name.StartsWith("tbDane"));

            foreach (var textBox in textBoxesToClear)
            {
                textBox.Clear();
            }

        }

---

using System;
using System.Linq;
using System.Windows;
using System.Windows.Controls;

namespace WpfApplication1
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            var textBoxesToClear = gridMain.Children
                                           .OfType<TextBox>()
                                           .Where(tb => tb.Name.StartsWith("tbDane"));

            foreach (var textBox in textBoxesToClear)
            {
                textBox.Clear();
            }

        }
    }
}

 

lub z użyciem tablicy nazw kontrolek

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            //var textBoxesToClear = gridMain.Children
            //                               .OfType<TextBox>()
            //                               .Where(tb => tb.Name.StartsWith("tbDane"));

            //foreach (var textBox in textBoxesToClear)
            //{
            //    textBox.Clear();
            //}

            string[] textBoxNames = { "tbDaneA1", "tbDaneB1", "tbDaneC1" };

            foreach (string textBoxName in textBoxNames)
            {
                var textBox = (TextBox)gridMain.FindName(textBoxName); // Znajdź kontrolkę po nazwie
                if (textBox != null)
                {
                    textBox.Clear();
                }
            }
        }

---

using System;
//using System.Linq;
using System.Windows;
using System.Windows.Controls;

namespace WpfApplication1
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            //var textBoxesToClear = gridMain.Children
            //                               .OfType<TextBox>()
            //                               .Where(tb => tb.Name.StartsWith("tbDane"));

            //foreach (var textBox in textBoxesToClear)
            //{
            //    textBox.Clear();
            //}

            string[] textBoxNames = { "tbDaneA1", "tbDaneB1", "tbDaneC1" };

            foreach (string textBoxName in textBoxNames)
            {
                var textBox = (TextBox)gridMain.FindName(textBoxName); // Znajdź kontrolkę po nazwie
                if (textBox != null)
                {
                    textBox.Clear();
                }
            }
        }
    }
}

 

Comments

Dzięki za obszerną pomoc !