rainmeter-studio/RainmeterStudio.TextEditor/TextEditorControl.xaml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace RainmeterStudio.TextEditorPlugin
{
    /// <summary>
    /// Interaction logic for TextEditorControl.xaml
    /// </summary>
    public partial class TextEditorControl : UserControl
    {
        private TextDocument _document;

        public TextEditorControl(TextDocument document)
        {
            InitializeComponent();

            _document = document;

            StringBuilder txt = new StringBuilder();
            document.Lines.ForEach((line) => txt.AppendLine(line));
            
            text.Text = txt.ToString();
        }
    }
}