我继承了一些 C# 代码，其中定义了 RichTextBox，带有用于文本左对齐、居中对齐和右对齐的按钮。运行程序时，使用“居中”按钮使文本居中，但是当我保存文件并重新加载时，居中消失了。
字体 size、style 和 color 等格式会被保留。当我查看 Xaml 文件输出时，我看到了 "TextAlignment=Justify" 而不是 "TextAlignment=Center"。我正在使用 Visual C# 2010，如果有人可以验证这是一个已在更高版本中修复的问题，我会很乐意升级。
代码如下:
private void save(object sender, RoutedEventArgs e)
{
System.Windows.Forms.DialogResult res;
if (saveas || Properties.Settings.Default.fr == "" || Properties.Settings.Default.fr == null)
{
System.Windows.Forms.SaveFileDialog of = new System.Windows.Forms.SaveFileDialog();
of.Filter = "Story files (*.sw)|*.sw|User template files (*.ut)|*.ut";
of.Title = "Save File";
if (Properties.Settings.Default.currentFileType.Equals("SYSTEM_TEMPLATE") || Properties.Settings.Default.currentFileType.Equals("USER_TEMPLATE"))
{
of.FilterIndex = 2;
}
try
{
of.FileName = Properties.Settings.Default.fr.Split("\\".ToCharArray())
[Properties.Settings.Default.fr.Split("\\".ToCharArray()).Length - 1];
}
catch { };
res = of.ShowDialog();
Properties.Settings.Default.fr = of.FileName;
Properties.Settings.Default.Save();
}
else
{
res = System.Windows.Forms.DialogResult.OK;
}
FlowDocument fd = new FlowDocument();
if (res == System.Windows.Forms.DialogResult.OK)
{
Properties.Settings.Default.currentFileType = getFileTypeFromExtension(System.IO.Path.GetExtension(Properties.Settings.Default.fr.ToString()));
Properties.Settings.Default.Save();
fd = toMS();
TextRange range;
System.IO.FileStream fStream;
range = new TextRange(fd.ContentStart, fd.ContentEnd);
try
{
fStream = new System.IO.FileStream(Properties.Settings.Default.fr, System.IO.FileMode.Create);
range.Save(fStream, DataFormats.Rtf);
fStream.Close();
Application.Current.MainWindow.Title = "StoryWeaver: " + Properties.Settings.Default.fr;
}
catch
{
MessageBox.Show("File not available. \n Try closing all programs that are using the file.");
}
}
}
public FlowDocument toMS()
{
FlowDocument fd = new FlowDocument();
fd.Blocks.Add(new Paragraph(new Run("(%&Version 1&%)")));
fd.Blocks.Add(new Paragraph(new Run("(%&ui&%)")));
fd.Blocks.Add(new Paragraph(new Run("Tab: 0")));
fd.Blocks.Add(new Paragraph(new Run("Cards: 0")));
fd.Blocks.Add(new Paragraph(new Run("Tree: True")));
fd.Blocks.Add(new Paragraph(new Run("(%&StoryWeaver&%)")));
fd.Blocks.Add(new Paragraph(new Run("")));
AddDocument(toDocument(), fd);
return fd;
}
public FlowDocument toDocument()
{
tree_SelectedItemChanged(null, null);
FlowDocument fd = new FlowDocument();
AddBlock(new Paragraph(new Run(getIndex(tree.SelectedItem as TreeViewItem).ToString() + "\n")), fd);
fd.Blocks.Add(new Paragraph());
string[] temp;
int i, j;
for (i = 0; i < tree.Items.Count; i++)
{
AddBlock(new Paragraph(new Run(((tree.Items[i] as TreeViewItem).Header as TextBox).Text + "\t"
+ (tree.Items[i] as TreeViewItem).Tag as string)), fd);
fd.Blocks.Add(new Paragraph());
temp = subTMS(tree.Items[i] as TreeViewItem).Split('\n');
for (j = 0; j < temp.Length; j++)
{
if (temp[j].Trim('\t').Length > 0)
{
AddBlock(new Paragraph(new Run("\t" + temp[j])), fd);
fd.Blocks.Add(new Paragraph());
}
}
}
for (i = 0; i < promptPages.Count; i++)
{
AddBlock(new Paragraph(new Run("//-------------------------------------")), fd);
fd.Blocks.Add(new Paragraph());
AddDocument(promptPages[i], fd);
AddBlock(new Paragraph(new Run("//-------------------------------------")), fd);
fd.Blocks.Add(new Paragraph());
if (Properties.Settings.Default.currentFileType.Equals("USER_TEMPLATE"))
{
pages[i].Blocks.Clear();
}
AddDocument(pages[i], fd);
}
return fd;
}
public static void AddDocument(FlowDocument from, FlowDocument to)
{
TextRange range = new TextRange(from.ContentStart, from.ContentEnd);
System.IO.MemoryStream stream = new System.IO.MemoryStream();
System.Windows.Markup.XamlWriter.Save(range, stream);
range.Save(stream, DataFormats.XamlPackage);
TextRange range2 = new TextRange(to.ContentEnd, to.ContentEnd);
range2.Load(stream, DataFormats.XamlPackage);
}
/// <summary>
/// Adds a block to a flowdocument.
/// </summary>
/// <param name="from">From.</param>
/// <param name="to">To.</param>
public static void AddBlock(Block from, FlowDocument to)
{
if (from != null)
{
TextRange range = new TextRange(from.ContentStart, from.ContentEnd);
System.IO.MemoryStream stream = new System.IO.MemoryStream();
System.Windows.Markup.XamlWriter.Save(range, stream);
range.Save(stream, DataFormats.XamlPackage);
TextRange textRange2 = new TextRange(to.ContentEnd, to.ContentEnd);
textRange2.Load(stream, DataFormats.XamlPackage);
}
}
最佳答案
我发现问题出在这个方法上:
public static void AddBlock(Block from, FlowDocument to)
{
if (from != null)
{
TextRange range = new TextRange(from.ContentStart, from.ContentEnd);
System.IO.MemoryStream stream = new System.IO.MemoryStream();
System.Windows.Markup.XamlWriter.Save(range, stream);
range.Save(stream, DataFormats.XamlPackage);
TextRange textRange2 = new TextRange(to.ContentEnd, to.ContentEnd);
textRange2.Load(stream, DataFormats.XamlPackage);
}
}
当我用调试器查看这段代码时，范围内的文本对齐方式是“居中”，textRange2 中的文本对齐方式是“左”。
我在方法的最后一行之前添加了如下两行代码:
TextAlignment blockTextAlignment = (TextAlignment)range.GetPropertyValue(TextBlock.TextAlignmentProperty);
textRange2.ApplyPropertyValue(TextBlock.TextAlignmentProperty, blockTextAlignment);
然后从文件中加载了正确的 TextAlignment。
关于C# FlowDocument RichTextBox 对齐不持久，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/20842924/