Document.Range.Replace throws InvalidCastException

Aspose.Words Product Family
1

Im running version 9.4.0 of Aspose.Words.


I run this code as a workaround for the lack of support fore soft hyphenation i Aspose.Words:

Document doc = new Document(file.FullName, new Aspose.Words.LoadOptions());
doc.Range.Replace(((char)31).ToString(), “”, false, false);

In one of my documents this method throws the exeption :
Test method TrossenUtskickTestProject.FileConverterTest.DocToOutputFormatTest threw exception: System.InvalidCastException: Unable to cast object of type ‘Aspose.Words.SpecialChar’ to type ‘Aspose.Words.Run’.

I have narrowed the problem down to the word “til­lämpning” on page 8, line 1. If I remove that word the code runs ok.

Edit: I now see that an alternative to the regular soft hyphen is used. The two syllables “till” and “lämpning” put together would result i three L´s and that´s not allowed in the Swedish language. This special charachter removes one L in the cases the two syllabels are put together on the same line.
It´s hard to express these things in English, but I´m doing my best.
2

Dear Mathias,


Thank you for your request.

I have just reproduced your issue and observed that exception happens due to hyphen in the word pointed by you. As workaround I would recommend you use the following code:

Node[] symbols = doc.GetChildNodes(NodeType.SpecialChar, true).ToArray();
// Remove option hyphens.
foreach (SpecialChar symbol in symbols)
{
if (symbol.GetText() == ControlChar.OptionalHyphenChar.ToString())
symbol.Remove();
}

instead of the following line:
doc.Range.Replace(((char)31).ToString(), “”, false, false);

I linked your request to related record in our problem tracking system and will keep your informed about any updates regarding issue fixing.


3
That almost solved the problem. Although it leaves a space where the soft hyphen used to be. The resulting word becomes "til lämpning" instead of "tillämpning".
For some reason my old code that i supposed to remove the 'regular' soft hyphens, can be used to remove the space left by your code example.

This code does the trick:

Node[] symbols = doc.GetChildNodes(NodeType.SpecialChar, true).ToArray();
foreach (SpecialChar symbol in symbols)
if (symbol.GetText() == ControlChar.OptionalHyphenChar.ToString())
symbol.Remove();

doc.Range.Replace(((char)31).ToString(), "", false, false);

Thanks
/Mathias
4

Dear Mathias,


It is really great you found way to sidestep the problem!

Please feel free to ask us if you have any questions.


5

The issues you have found earlier (filed as WORDSNET-4035) have been fixed in this .NET update and this Java update.

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