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From: Martin Honnen on 11 Apr 2010 14:14
Tony Johansson wrote:
> "Martin Honnen" <mahotrash(a)yahoo.de> skrev:
>> Tony Johansson wrote:

>>> When I run the code below I get runtime error saying
>>> 10,10,100,200 is not a valid value for Int32.
>>> But I mean this method ConvertFromString can take a string and convert
>>> that to a rectangle that's what the docs say
>>> So is there a bug or have I missunderstood this ConvertFromString ?
>>>
>>> protected override void OnPaint(PaintEventArgs e)
>>> {
>>> string rectInput = "10,10,100,200";
>>> Graphics g = e.Graphics;
>>> RectangleConverter converter = new RectangleConverter();
>>> Rectangle outerRect = (Rectangle)
>>> converter.ConvertFromString(rectInput);
>> It might depend on the current CultureInfo how that string is parsed
>> respectively what format is expected. Does using
>> ConvertFromInvariantString give you the result you want?

> If I use ConvertFromInvariantString it works but I mean a rectangle always
> look the same no matter what culture we use.

I am not very familiar with the RectangeConverter class and those
methods but as both ConvertFromString and ConvertFromInvariantString
exist and as ConvertFromString has an overload
http://msdn.microsoft.com/en-us/library/2kf8exy6(v=VS.90).aspx
taking a CultureInfo it looks as if ConvertFromString is culture dependant.

--

Martin Honnen --- MVP Data Platform Development
http://msmvps.com/blogs/martin_honnen/
From: Tony Johansson on 11 Apr 2010 15:48
> As it happens, the string you're using matches the format expected by the
> invariant culture. So it works when you use the
> ConvertFromInvariantString() method. You could also get it to work by
> determining what your current culture is and figuring out what format that
> culture expects (though, if you're doing this for serialization purposes,
> the invariant culture is actually a more appropriate choice anyway).
>

Hi!


My current culture is swedish and this culture use ; as list separator and
not ,(comma) so I just changed from , to ; and now it works.
myRectangle.Location = (Point)pointConverter.ConvertFromString("20; 20");
myRectangle.Size = (Size)sizeConverter.ConvertFromString("200; 400");

I didn't thought about the list separator was culture dependent.

//Tony



From: Patrice on 11 Apr 2010 15:40
> If I use ConvertFromInvariantString it works but I mean a rectangle always
> look the same no matter what culture we use.

"10,10,100,200" is just a string. Here in France , is used as the decimal
point so ; is used to separate items. Likely the same in your country...

So the culture does matter...


--
Patrice


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