Getting an error when the add-in is run

Question

1.00/5 (1 vote)

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I want to copy the word entered by a user as soon as the user presses space(Just like the spell checker in word editors do).
I'm using the following code:

private void ThisAddIn_Startup(object sender, System.EventArgs e)
        {
            ConsoleKeyInfo info = Console.ReadKey();
            if (info.KeyChar == ' ')
            {
                Word.Range rng = this.Application.ActiveDocument.Words.Last;
                rng.Select();
                rng.Copy();
                String input = Clipboard.GetText(TextDataFormat.Text);
            }
        }

I'm getting the following error:
An exception of type 'System.InvalidOperationException' occurred in mscorlib.dll but was not handled in user code.
for the following line:

ConsoleKeyInfo info = Console.ReadKey();

Please help.

Posted 18-Oct-14 23:34pm

Tejas Shastri

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Comments

Tomas Takac 19-Oct-14 5:43am

MSDN says ReadKey throws InvalidOperationException in case input has been redirected from some stream other than the console. Is that your case?

Tejas Shastri 19-Oct-14 5:49am

no no.. As soon as i run the prog the MS word application launches and throws an error. FYI I'm using MS office 2013 and VS 2013 ultimate.

Maciej Los 19-Oct-14 5:44am

Word does not corresponds with Console application!

Tejas Shastri 19-Oct-14 5:50am

oh :( Then how will i read the keystroke? :(

Maciej Los 19-Oct-14 6:08am

Please, see my answer.

2 solutions

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BillWoodruff · Answer 1 · 2014-10-19T09:04:00

Cindy Meister, VSTO/Word MVP, on VSTO Microsoft forum, in 2011 re Word 2010:

More exactly, I said there's nothing in the Word API or VSTO that can pick up keystrokes. There's nothing built-in that you can use in a VSTO project to pick up the keystrokes.

You'd either need to use VBA (which isn't part of VSTO) or you'd need to use the Windows API - both of which are not an integral part of VSTO.

In Word, keystrokes can only be mapped to VBA macros, not to other code.

[^].

I would investigate if you can apply a GlobalHook to the Word Application, but, I have no idea is this is possible within the context of an Add-In.

Maciej Los · Answer 2 · 2014-10-19T00:03:00

Solution 1

You need to know that MS Word addin does not corresponds with Console aplication[^].

If you want to interact with MS Word, you need to use its objects, methods and events.

As per i understand your requirements, you need to use one of MS word/document event (i'm not sure which one, if any). Please, see:
Application Events[^]
Document Events[^]
Using Events with the Document Object[^]
Writing application event procedures[^]

[EDIT]
I think you're looking for KeyPress event[^]
But i need to warn you: there isn't simple way to achieve that. Please see this[^]

Posted 19-Oct-14 0:03am

Maciej Los

Updated 19-Oct-14 0:25am

v3

Comments

Tejas Shastri 19-Oct-14 6:19am

There's no application event or document event which can detect keystrokes :( Please advice.. Can I create an event handler??

Maciej Los 19-Oct-14 6:24am

See updated question (after EDIT part).

Tejas Shastri 19-Oct-14 8:40am

I actually found a code.. can you help me modify the code to use for space bar?

Maciej Los 19-Oct-14 9:12am

I'm sorry, but it doesn't work like this... ;(
You need at least try to do your job. When you get stuck, come back here and ask detailed question.

Tejas Shastri 19-Oct-14 13:42pm

I'm not even able to understand where the key code is mentioned.:/

BillWoodruff 19-Oct-14 14:56pm

+5 Please note the statement by a MS MVP for Word/VSTO quoted in my reply.