[IronPython] Willing to pay for help

[Lukas Cenovsky]

I recommend to check DevHawk's posts on Background processing:
http://devhawk.net/2008/11/19/IronPython+And+WPF+Part+4+Background+Processing.aspx
http://devhawk.net/2008/11/21/Background+Processing+ReRevisited.aspx

--
-- Lukás(


Dino Viehland wrote:
> Another way to do this, and one I think you were trying to accomplish, and 
> is probably superior, would be to move this to another thread.  In your code 
> you have:
>
> 				#t = Thread(ThreadStart(CreateZip(zipname, fname)))
> 				#t.Start()
>
> Which I believe is where you're trying to do this.  I would recommend moving
> the whole loop into its own function (probably defined in your Button3Click
> method so it just closes over the variables) such as:
>
> 	def Button3Click(...):
> 		...
>    	      def inner_func(unused):
> 		    for fname in file_list:
> 			  ...
>
> from System.Threading import ThreadPool
> ThreadPool.QueueUserWorkItem(inner_function)
>
> Then you just need to change your updates to the UI to be posted back on the
> UI thread.  You do this using Control.BeginInvoke such as:
>
>    	      def inner_func(unused):
> 		    for fname in file_list:
> 			  ...
> 		        def update_text():
>                         self._label4.Text = "Zipping file " + str(count) + " of " + str(len(file_list))	
>
> 			  self.BeginInvoke(Action(update_text))
>
> This will have the added benefit of never hanging - even if the zip operation
> is taking a very long period of time.  You'll need to do the same thing for
> updating the progress bar, and you'll need to flow in the value in 
> self._textBox2.Text, etc...  Basically you can't touch the UI from any thread
> other than the UI thread.
>
> All of this was compiled w/ Outlook so hopefully it's mostly accurate and can
> get you going in the right direction if you want a slightly better solution.
>
>   
>> -----Original Message-----
>> From: users-bounces at lists.ironpython.com [mailto:users-
>> bounces at lists.ironpython.com] On Behalf Of robinsiebler
>> Sent: Thursday, May 27, 2010 1:25 PM
>> To: users at lists.ironpython.com
>> Subject: Re: [IronPython] Willing to pay for help
>>
>>
>> That worked! Give me an e-mail address and I will send you the money.
>> Can you
>> recommend a good book to learn about WinForms and .NET in general?
>>
>>
>> Curt Hagenlocher wrote:
>>     
>>> You almost certainly need to be pump messages occasionally if you're
>>>       
>> going
>>     
>>> to be performing a long operation on the UI thread. With Windows
>>>       
>> Forms,
>>     
>>> this
>>> involves calling System.Windows.Forms.Application.DoEvents().
>>>
>>> On Thu, May 27, 2010 at 11:55 AM, robinsiebler <robinsiebler at 321.net>
>>> wrote:
>>>
>>>       
>>>> This is my 1st IronPython/.NET app. It is really simple, all it does
>>>>         
>> is
>>     
>>>> zip
>>>> all the files in a folder into an archive, 1 file per zip.
>>>>
>>>> The problem is that when it is zipping large files 200MB+ the app
>>>>         
>> stops
>>     
>>>> responding. It is still zipping files, but the UI doesn't update. I
>>>>         
>> don't
>>     
>>>> know how to fix this.
>>>>
>>>> The project is here -
>>>>
>>>> http://cid-
>>>>         
>> 0c375b07f1f323b6.skydrive.live.com/self.aspx/.Public/ZipfilesGUI.zip
>>     
>>>> I've looked at all the examples and I am can't seem to figure out
>>>>         
>> how to
>>     
>>>> apply them to my app. I'm sur that if someone shows me how to do it
>>>>         
>> I
>>     
>>>> will
>>>> get it.
>>>>
>>>> I am willing to pay $30 to anyone who will help me solve the
>>>>         
>> problem.
>>     
>>>> The
>>>> problem is this - when zipping large files (100MB+) the UI stops
>>>> responding.
>>>> It doesn't refresh until all the files are zipped.
>>>> --
>>>> View this message in context:
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>>>>         
>> tp28698448p28698448.html
>>     
>>>> Sent from the IronPython mailing list archive at Nabble.com.
>>>>
>>>> _______________________________________________
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>>>>         
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>>>       
>> --
>> View this message in context: http://old.nabble.com/Willing-to-pay-for-
>> help-tp28698448p28699466.html
>> Sent from the IronPython mailing list archive at Nabble.com.
>>
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