My name is Edward Tanguay. I'm an American software and web developer living and working in Berlin, Germany.
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WPF CODE EXAMPLE created on Saturday, February 06, 2010 permalink
How to use a WPF FileDialog to read in a text file
This example shows how you can allow the user to click on a button and choose a text file to view the contents of the file in a scrollable box on the screen.
XAML:
<Window x:Class="TestFileDialog2343.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Window1" Height="300" Width="350">
    <StackPanel Margin="10" HorizontalAlignment="Left">
        <StackPanel HorizontalAlignment="Left">
            <Button Content="Load File"
                Click="Button_LoadFile_Click"
                Margin="0 0 0 10"/>
        </StackPanel>
        <ScrollViewer
            Width="300"
            Height="200">
            <TextBox x:Name="TextFileContent"
                 TextWrapping="Wrap"/>
        </ScrollViewer>
    </StackPanel>
</Window>

Code Behind:
using System.Windows;
using Microsoft.Win32;
using System.Text;
using System.IO;
using System;

namespace TestFileDialog2343
{
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }

        private void Button_LoadFile_Click(object sender, RoutedEventArgs e)
        {
            OpenFileDialog dlg = new OpenFileDialog();
            dlg.DefaultExt = ".txt";
            dlg.InitialDirectory = @"C:test";
            dlg.Filter = "Text documents (.txt)|*.txt";

            bool? result = dlg.ShowDialog();

            if (result == true)
            {
                TextFileContent.Text =File.ReadAllText(dlg.FileName);
            }
        }

    }
}
need markup?
 

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