Пробуем следующий вариант:
| Код |
public class MyRichTextBox : RichTextBox
{
private static DependencyProperty SaveAsProperty = DependencyProperty.Register("SaveAs", typeof(string), typeof(MyRichTextBox));
private static DependencyProperty LoadedAsProperty = DependencyProperty.Register("LoadedAs", typeof(string), typeof(MyRichTextBox));
private static DependencyProperty IsFormattedProperty = DependencyProperty.Register("IsFormatted", typeof(bool), typeof(MyRichTextBox), new PropertyMetadata(false));
private static DependencyProperty TextProperty = DependencyProperty.Register("Text", typeof(string), typeof(MyRichTextBox));
public string Text
{
get { return (string)GetValue(TextProperty); }
set { SetValue(TextProperty, value); }
}
public MyRichTextBox() : base() { }
public MyRichTextBox(FlowDocument document) : base(document)
{
IsFormatted = true;
}
protected override void OnInitialized(EventArgs e)
{
base.OnInitialized(e);
var descriptor = DependencyPropertyDescriptor.FromProperty(TextProperty, typeof(TextBox));
descriptor.AddValueChanged(this, delegate { if (RTBContent != Text) RTBContent = Text == null ? string.Empty : Text; });
TextChanged += delegate { if (Text != RTBContent) Text = RTBContent; };
}
public bool IsFormatted
{
get { return (bool)GetValue(IsFormattedProperty); }
set { SetValue(IsFormattedProperty, value); }
}
public string SaveAs
{
get { return (string)GetValue(SaveAsProperty); }
set { SetValue(SaveAsProperty, value); }
}
public string LoadedAs
{
get { return (string)GetValue(LoadedAsProperty); }
set { SetValue(LoadedAsProperty, value); }
}
public string TextOnly
{
get { return new TextRange(Document.ContentStart, Document.ContentEnd).Text; }
}
public void ClearFormatting()
{
RTBContent = TextOnly;
}
public string RTBContent
{
get
{
TextRange tr = new TextRange(Document.ContentStart, Document.ContentEnd);
using (var ms = new MemoryStream())
{
tr.Save(ms, IsFormatted ? DataFormats.Rtf : DataFormats.Text);
return ASCIIEncoding.Default.GetString(ms.ToArray());
}
}
set
{
TextRange selection = new TextRange(Document.ContentStart, Document.ContentEnd);
SetRangeContent(selection, value);
if ((string)GetValue(TextBox.TextProperty) != value)
SetValue(TextBox.TextProperty, value);
}
}
private string SetRangeContent(TextRange selection, string content)
{
string loadType = DataFormats.Rtf;
IsFormatted = true;
content = content == "" ? " " : content;
try
{
using (MemoryStream ms = new MemoryStream(ASCIIEncoding.Default.GetBytes(content)))
{
if (content.StartsWith("<Section"))
{
if (selection.CanLoad(DataFormats.Xaml))
{
selection.Load(ms, DataFormats.Xaml);
loadType = DataFormats.Xaml;
}
}
else if (content.StartsWith("PK"))
{
if (selection.CanLoad(DataFormats.XamlPackage))
{
selection.Load(ms, DataFormats.XamlPackage);
loadType = DataFormats.XamlPackage;
}
}
else if (content.StartsWith("{\\rtf"))
{
if (selection.CanLoad(DataFormats.Rtf))
{
selection.Load(ms, DataFormats.Rtf);
loadType = DataFormats.Rtf;
}
}
else
{
if (selection.CanLoad(DataFormats.Text))
{
selection.Load(ms, DataFormats.Text);
loadType = DataFormats.Text;
IsFormatted = false;
}
}
}
}
catch (Exception)
{
throw;
}
return loadType;
}
}
|
Используем:
| Код |
<local:MyRichTextBox Text="{Binding Path=MyField}" />
|
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