To reproduce:
- Search for a specific word until the last occurrence is found and a message appears.
- Click the FindPrevious button
Result: A message appears.
Expected: The previous entry is selected.
When we render any PDF file with 'x' number of page count and try to enter page 'x+1' in telerik:CurrentPageTextBox and hit enter, it will enable the Previous Page RadButton and if we click Previous Page then it will freeze the application.
System.ArgumentOutOfRangeException: 'pageNo should be greater or equal than 1 and less or equal than 4. (Parameter 'pageNo')'
Workaround: A possible approach could be to attach to the CurrentPageTextBox` KeyDown event in order to restrict the input.
XAML:
<telerik:CurrentPageTextBox x:Name="PART_CurrentPageNumberTextBox"
KeyDown="PART_CurrentPageNumberTextBox_KeyDown"
Text="{Binding FixedDocumentViewer.CurrentPageNumber, Mode=TwoWay}"/>private void PART_CurrentPageNumberTextBox_KeyDown(object sender, System.Windows.Input.KeyEventArgs e)
{
TextBox textBox = sender as TextBox;
if (textBox != null)
{
if (e.Key == System.Windows.Input.Key.Enter)
{
int pagesCount = this.pdfViewer.PagesCount;
int currentPageNumber = this.pdfViewer.CurrentPageNumber;
if (this.pdfViewer.Document != null && (currentPageNumber < 1 || currentPageNumber > pagesCount))
{
RadFixedPage currentPage = this.pdfViewer.CurrentPage;
int pageNum = this.pdfViewer.Document.Pages.IndexOf(currentPage) + 1;
this.pdfViewer.CurrentPageNumber = pageNum;
}
}
}
}
When importing a PDF document, opening the stream in using statement, and using the default constructor of the PdfDocumentSource class, an exception is thrown:
using (Stream stream = ofd.OpenFile())
{
this.pdfViewer.DocumentSource = new PdfDocumentSource(stream);
}using (Stream stream = ofd.OpenFile())
{
PdfImportSettings importSettings = new PdfImportSettings
{
CopyStream = true
};
this.pdfViewer.DocumentSource = new PdfDocumentSource(stream, importSettings);
}
When extracting text from a composite font the ToUnicode mapping should be used but when this mapping is missing the char codes must be mapped by constructing a secondary map from fonts ordering and registry.
A possible workaround could be to register a TrueType font using the FontsRepository.RegisterFont() method:
FontsRepository.RegisterFont(new FontFamily(fontName), FontStyles.Normal, FontWeights.Normal, File.ReadAllBytes(pathToFont));
FontsRepository.TryCreateFont(new FontFamily(fontName), FontStyles.Normal, FontWeights.Normal, out FontBase font);
foreach (RadFixedPage page in document.Pages)
{
foreach (ContentElementBase contentElement in page.Content)
{
if (contentElement is TextFragment textFragment)
{
if (textFragment.Font.Name == fontName)
{
textFragment.Font = font;
}
}
}
}
According to the PDF specification (Adobe® Portable Document Format Version 1.7):
Append a rectangle to the current path as a complete subpath, with lower-left corner (x, y) and dimensions width and height in user space.
The operation:
x y width height re
An invalid case:
0 - 595 -842 re
This leads to an exception thrown: System.NullReferenceException: 'Object reference not set to an instance of an object.'
The object definitions are split into several lines:
