Some regional setting use comma as decimal separator. This lead to exception in float.Parse and other number parsing from strings.
Example: in Russian regional settings numbers used in way like that "20,2525"

My solution code¶

public static float FloatParse(string value)
{
  return float.Parse(value.Replace(",", "."), CultureInfo.InvariantCulture);
}

Here exception details¶

System.FormatException was unhandled
  Message=FormatException
  StackTrace:
       at System.Single.Parse(String s, NumberStyles style, IFormatProvider provider)
       at System.Single.Parse(String s)
       at cocos2d.CCParticleSystem.initWithDictionary(Dictionary`2 dictionary)
       at cocos2d.CCParticleSystem.initWithFile(String plistFile)

code:

m_tStartColor.r = float.Parse(ChangeToZeroIfNull(valueForKey("startColorRed", dictionary)));

same bug with
int.Parse("5.0252");

hi,
it seems that the int.Parse requires the string to be in the exact format.
i.e.,

int.Parse("5");

int.Parse("5.0252");

in your case you should use

 double.Parse("5.0252");

i just reporting bugs, i dont need solutions. already commited fix in local git repository.

int.Parse("5.0252", NumberStyles.AllowDecimalPoint);
works perfectly.

int.Parse("5.0252", NumberStyles.AllowDecimalPoint);
throw errors in Russian regional settings (and any other regions where comma used as separator)

hi , Evgeniy Rojkov,
i think it's better to use decimal point to seperate a float number, because comma sometimes is used to seperate interger, for example, "100,000".
if you do want to use comma, you could add that function to your own native code.

i dont care about comma or dot thing.
i just saying that on system with global settings with decimal delimeter as comma?
code like that:

int.Parse("5.0252");

throw FormatException.

cocos2d parse particles settings from *.plist and use alot of float.parse and int.parse in CCParticleSystem.cs

you can view this error, change regional settings to russian in emulator and run cocos default "tests" -> "particles".

Here my fix for CCParticle.initWithDictionary
please merge or refactor and merge this fix in to cocos2d-xna.

Parse error keep throwing in Russian WPes.

Here my fix for CCParticle.initWithDictionary

CCParticleSystem.cs¶

http://snipt.org/uhggj8

HelperParse.cs¶

http://snipt.org/uhgha7

please merge or refactor & merge this fix in to cocos.
Parse error keep throwing in Russian WPes.

in new master from 17.04.2012 12:25:35

System.FormatException was unhandled
  Message=FormatException
  StackTrace:
       at System.Single.Parse(String s, NumberStyles style, IFormatProvider provider)
       at System.Single.Parse(String s)
       at cocos2d.CCSpriteFrameCache.addSpriteFramesWithDictionary(Dictionary`2 pobDictionary, CCTexture2D pobTexture)
       at cocos2d.CCSpriteFrameCache.addSpriteFramesWithFile(String pszPlist)
       at tests.SpriteFrameTest..ctor()
       at tests.SpriteTestScene.createSpriteTestLayer(Int32 nIndex)
       at tests.SpriteTestScene.nextSpriteTestAction()
       at tests.SpriteTestDemo.nextCallback(CCObject pSender)
       at cocos2d.CCMenuItem.activate()
       at cocos2d.CCMenu.ccTouchEnded(CCTouch touch, CCEvent ccevent)
       at cocos2d.CCTouchDispatcher.touches(List`1 pTouches, CCEvent pEvent, Int32 uIndex)
       at cocos2d.CCTouchDispatcher.touchesEnded(List`1 touches, CCEvent pEvent)
       at cocos2d.CCApplication.ProcessTouch()
       at cocos2d.CCApplication.Update(GameTime gameTime)
       at Microsoft.Xna.Framework.Game.Update(GameTime gameTime)
       at tests.Game1.Update(GameTime gameTime)
       at Microsoft.Xna.Framework.Game.Tick()
       at Microsoft.Xna.Framework.Game.HostIdle(Object sender, EventArgs e)
       at Microsoft.Xna.Framework.GameHost.OnIdle()
       at Microsoft.Xna.Framework.MobileGameHost.RunOneFrame()
       at Microsoft.Xna.Framework.MobileGameHost.gameLoopTimer_Tick(Object sender, EventArgs e)
       at Microsoft.Xna.Framework.DispatcherTimerWin32.TimerElapsed(IntPtr hWnd, UInt32 uMsg, IntPtr nIDEvent, UInt32 uTime)

i know my english is bad.
here google search may help https://www.google.com/search?q=c%23+float.Parse+comma+dot+bug

another locale problem http://www.cocos2d-x.org/boards/17/topics/11221