private void UpdateButton_Click(object sender, RoutedEventArgs e)
{
// StaticResource 側 (左側) のスタイル設定を更新する
// ※ Style は、適用された後では変更不可。
// 以下のようなコードは動かない。
//var ss = this.Resources["StaticStyle"] as Style;
//var textSetter = ss.Setters.Cast<Setter>().First(s => s.Property.Name == "Text");
//textSetter.Value = this.Resources["Message"];
// ↑textSetter.Value は IsSealed=true になっていて、変更不可。
// 新たに Style オブジェクトを組み立てて、TextBlock にセットする
// (XAML のスタイル定義と同じことを C# のコードで再実行する)
var textSetter = new Setter(TextBlock.TextProperty, this.Resources["Message"]);
var fontSizeSetter = new Setter(TextBlock.FontSizeProperty,
this.Resources["RandomFontSize"]);
var foregroundSetter = new Setter(TextBlock.ForegroundProperty,
this.Resources["RandomColorBrush"]);
var textBlockStyle = new Style(typeof(TextBlock),
basedOn: this.Resources["TextBaseStyle"] as Style);
textBlockStyle.Setters.Add(textSetter);
textBlockStyle.Setters.Add(fontSizeSetter);
textBlockStyle.Setters.Add(foregroundSetter);
this.Resources["StaticStyle"] = textBlockStyle;
TextBlock1.SetResourceReference(TextBlock.StyleProperty, "StaticStyle");
}
private void SetBinding()
{
Binding binding = new Binding()
{
ElementName = "Slider1",
Path = new PropertyPath("Value"),
Mode = BindingMode.OneWay
};
Binding binding2 = new Binding()
{
ElementName = "myColor",
Path = new PropertyPath("Text"),
Mode = BindingMode.TwoWay,
};
TextBlock1.SetBinding(TextBlock.FontSizeProperty, binding);
TextBlock1.SetBinding(TextBlock.ForegroundProperty, binding2);
}
public void openButton_Click(object sender, RoutedEventArgs e)
{
OpenFileDialog open = new OpenFileDialog();
open.DefaultExt = ".rtf";
open.Filter = "Rich Text files (*.rtf)|*.rtf|All files (*.*)|*.*";
if (textChanged == true)
{
toSave();
}
System.Windows.Forms.DialogResult result = open.ShowDialog();
if (result == System.Windows.Forms.DialogResult.OK)
{
ClearText();
TextBlock1.AppendText(System.IO.File.ReadAllText(open.FileName));
textChanged = false;
currentFileName = open.FileName;
}
}
private void OnTextBlockClearSelectionClicked(object sender, object args)
{
TextBlock1.Select(TextBlock1.ContentStart, TextBlock1.ContentStart);
}
private void OnTextBlockSelectAllClicked(object sender, object args)
{
TextBlock1.SelectAll();
}
public void WriteToTextBlock(string message)
{
TextBlock1.Dispatcher.Invoke(DispatcherPriority.Background,
new Action(() => { TextBlock1.AppendText(message + "\n"); }));
}
