Author: coder

TextBox PreviewTextInput

Posted on by coder 


   
  



<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="WPF " Height="300" Width="300">
    <DockPanel LastChildFill="True">
        <TextBox DockPanel.Dock="Top" PreviewTextInput="TextBox_TextEvent"/>
        <TextBox Name="txtLog" HorizontalAlignment="Stretch" 
                 IsReadOnly="True" VerticalScrollBarVisibility="Visible"/>
    </DockPanel>
</Window>

//File:Window.xaml.cs
using System;
using System.Windows;
using System.Windows.Input;

namespace WpfApplication1
{
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }

        private void TextBox_TextEvent(object sender,TextCompositionEventArgs e)
        {
            String msg = String.Format("{0} - {1}
", e.RoutedEvent.Name, e.Text);

            txtLog.Text += msg;
            txtLog.ScrollToEnd();
        }
    }
}

Scroll TextBox

Posted on by coder 


   
  

<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="WPF " Height="300" Width="300">
    <DockPanel LastChildFill="True">
        <TextBox DockPanel.Dock="Top" PreviewTextInput="TextBox_TextEvent"/>
        <TextBox Name="txtLog" HorizontalAlignment="Stretch" 
                 IsReadOnly="True" VerticalScrollBarVisibility="Visible"/>
    </DockPanel>
</Window>

//File:Window.xaml.cs
using System;
using System.Windows;
using System.Windows.Input;

namespace WpfApplication1
{
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }

        private void TextBox_TextEvent(object sender,TextCompositionEventArgs e)
        {
            String msg = String.Format("{0} - {1}
", e.RoutedEvent.Name, e.Text);

            txtLog.Text += msg;
            txtLog.ScrollToEnd();
        }
    }
}

TextBox KeyDown

Posted on by coder 


   
  


<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="WPF " Height="300" Width="300">
    <DockPanel LastChildFill="True">
        <TextBox DockPanel.Dock="Top" KeyDown="TextBox_KeyEvent" />
        <TextBox Name="txtLog" HorizontalAlignment="Stretch" 
                 IsReadOnly="True" VerticalScrollBarVisibility="Visible"/>
    </DockPanel>
</Window>

//File:Window.xaml.cs
using System;
using System.Windows;
using System.Windows.Input;

namespace WpfApplication1
{
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }

        private void TextBox_KeyEvent(object sender, KeyEventArgs e)
        {
            String msg = String.Format("{0} - {1}
",e.RoutedEvent.Name, e.Key);

            txtLog.Text += msg;
            txtLog.ScrollToEnd();
        }
    }
}

TextBox PreviewKeyUp

Posted on by coder 


   
  


<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="WPF " Height="300" Width="300">
    <DockPanel LastChildFill="True">
        <TextBox DockPanel.Dock="Top" PreviewKeyUp="TextBox_KeyEvent" />
        <TextBox Name="txtLog" HorizontalAlignment="Stretch" IsReadOnly="True" VerticalScrollBarVisibility="Visible"/>
    </DockPanel>
</Window>

//File:Window.xaml.cs
using System;
using System.Windows;
using System.Windows.Input;

namespace WpfApplication1
{
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }

        private void TextBox_KeyEvent(object sender, KeyEventArgs e)
        {
            String msg = String.Format("{0} - {1}
",e.RoutedEvent.Name, e.Key);

            txtLog.Text += msg;
            txtLog.ScrollToEnd();
        }

    }
}

TextBox KeyUp

Posted on by coder 


   
  


<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="WPF " Height="300" Width="300">
    <DockPanel LastChildFill="True">
        <TextBox DockPanel.Dock="Top" KeyUp="TextBox_KeyEvent" />
        <TextBox Name="txtLog" HorizontalAlignment="Stretch" 
                 IsReadOnly="True" VerticalScrollBarVisibility="Visible"/>
    </DockPanel>
</Window>

//File:Window.xaml.cs
using System;
using System.Windows;
using System.Windows.Input;

namespace WpfApplication1
{
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }

        private void TextBox_KeyEvent(object sender, KeyEventArgs e)
        {
            String msg = String.Format("{0} - {1}
",e.RoutedEvent.Name, e.Key);

            txtLog.Text += msg;
            txtLog.ScrollToEnd();
        }
    }
}

Handler for the PreviewKeyDown event on the TextBox

Posted on by coder 


   
  

<Window x:Class="WpfApplication1.Window1"
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  Title="Window1" Height="300" Width="300">
  <Grid>
    <StackPanel>
      <TextBox x:Name="uv" PreviewKeyDown="TextBox_PreviewKeyDown" />

    </StackPanel>
  </Grid>
</Window>


//File:Window1.xaml.cs
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;

namespace WpfApplication1
{
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
            DataContext = this;
        }

        //
        private void TextBox_PreviewKeyDown(object sender, RoutedEventArgs e)
        {
            TextBox textBox = sender as TextBox;

            if (textBox != null)
            {
                textBox.Foreground = Brushes.Firebrick;
            }
        }
    }
}

TextBox: set text, select all, clear, prepend, insert, append, cut, paste, undo

Posted on by coder 


   
  
<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="WPF" Height="300" Width="300">
    <StackPanel>
        <TextBox AcceptsReturn="True" Height="100" IsReadOnly="True" 
                 Name="textBox1" TextAlignment="Left" TextWrapping="Wrap" 
                 VerticalScrollBarVisibility="Auto">
            Default starting text.
        </TextBox>
        <WrapPanel Margin="10">
            <Button Margin="5" Name="textButton" Width="75" Click="TextButton_Click">Set Text</Button>
            <Button Margin="5" Name="selectAllButton" Width="75" Click="SelectAllButton_Click">Select All</Button>
            <Button Margin="5" Name="clearButton" Width="75" Click="ClearButton_Click">Clear</Button>
            <Button Margin="5" Name="prependButton" Width="75" Click="PrependButton_Click">Prepend</Button>
            <Button Margin="5" Name="insertButton" Width="75" Click="InsertButton_Click">Insert</Button>
            <Button Margin="5" Name="appendButton" Width="75" Click="AppendButton_Click">Append</Button>
            <Button Margin="5" Name="cutButton" Width="75" Click="CutButton_Click">Cut</Button>
            <Button Margin="5" Name="pasteButton" Width="75" Click="PasteButton_Click">Paste</Button>
            <Button Margin="5" Name="undoButton" Width="75" Click="UndoButton_Click">Undo</Button>
        </WrapPanel>
    </StackPanel>
</Window>
//File:Window.xaml.cs
using System.Windows;
using System.Windows.Controls;

namespace WpfApplication1
{
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }
        private void AppendButton_Click(object sender, RoutedEventArgs e)
        {
            textBox1.AppendText("text");
        }
        private void ClearButton_Click(object sender, RoutedEventArgs e)
        {
            textBox1.Clear();
        }
        private void CutButton_Click(object sender, RoutedEventArgs e)
        {
            if (textBox1.SelectionLength == 0)
            {
                MessageBox.Show("Select text to cut first.", Title);
            }
            else
            {
                MessageBox.Show("Cut: " + textBox1.SelectedText, Title);
                textBox1.Cut();
            }
        }

        private void InsertButton_Click(object sender, RoutedEventArgs e)
        {
            textBox1.Text = textBox1.Text.Insert(textBox1.CaretIndex, "text");
        }

        private void PasteButton_Click(object sender, RoutedEventArgs e)
        {
            textBox1.Paste();
        }

        private void PrependButton_Click(object sender, RoutedEventArgs e)
        {
            textBox1.Text = textBox1.Text.Insert(0, "Prepend");
        }
        private void SelectAllButton_Click(object sender, RoutedEventArgs e)
        {
            textBox1.SelectAll();
            textBox1.Focus();
        }

        private void TextButton_Click(object sender, RoutedEventArgs e)
        {
            textBox1.Text = "new value";
        }

        private void UndoButton_Click(object sender, RoutedEventArgs e)
        {
            textBox1.Undo();
        }
    }
}