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Handle the FormClosing event. It gives you the close reason.
void YourForm_FormClosing(object sender, FormClosingEventArgs e)
{
if (e.CloseReason == CloseReason.WindowsShutDown)
{
}
}
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typedef vector <addresstoken*> ADDRESS_TOKENS_VECTOR;
AddressToken is a predefined structure
can anyone explain the above code
the quieter u become more u hear
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This is a C++ question, not C#. Anyhow, typedef is used in C and C++ to give a type a new name and is often done for clarity purposes. I think what the code is doing is creating a vector of type addresstoken pointers and its given a succint name as ADDRESS_TOKENS_VECTOR.
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C# doesn't support typedef.
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You can use the "using" directive to do that. For example
using MyList = System.Collections.Generic.List<int>;
Regards
Senthil [MVP - Visual C#]
_____________________________
My Home Page |My Blog | My Articles | My Flickr | WinMacro
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Hi guys,
I have a question which I am not sure how to put it exactly. I have a method DoTask: when DoTask is completed, it will fire up a TaskCompleted event which will invoke the OnTaskCompleted method, however if it is some more tasks to be done, OnTaskCompleted will call DoTask. This cycle keeps repeating until there is no more task. What I am afraid, is event calling is synchronous, meaning DoTask calls OnTaskCompleted and OnTaskCompleted calls DoTask, it is being done recursively, it may run out of stack memory as the user may be running my application for a long time.
Is event calling done in the caller or it is dispatched to be done at a later time?
Thank you very much!
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Wong Shao Voon wrote: Is event calling done in the caller or it is dispatched to be done at a later time?
Not sure what you mean. Please elaborate. Does DoTask to the same thing everytime? How do you decide when it will not be called again?
Maybe there is a better solution if you tell us what it is you are trying to do.
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Hi Yoshi,
DoTask is not called again if there is nothing to be downloaded because the list of files is empty. The scenario is complicated because I simplified in the previous post. You can say DoTask() does not do the same thing, if the location of the file is http, it will download from that url using http API. If the location of the file is ftp, it will download from that url using ftp API. If it is local or UNC path, DoTask will just copy from that location.
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Wong Shao Voon wrote: OnTaskCompleted method, however if it is some more tasks to be done, OnTaskCompleted will call DoTask.
That doesn't looks like a good design. How about moving this logic to DoTask method? DoTask method has to fire TaskCompleted event when it finishes each task, it then checks for more tasks. Something like
while(isThereMoreTask()){
}.
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Hi Navaneeth,
DoTask is doing its work asynchronously, that is it returns immediately after creating a thread. Can anyone answer my question that event invoking is done in the caller or done/called at a later time by the CLR?
Thanks!
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Hi,
in order to execute multiple tasks sequentially I prefer using a Queue.
With a queue, there is no recursion, it boils down to a simple loop:
while(there is work to do) do it;
Luc Pattyn [Forum Guidelines] [My Articles]
I use ListBoxes for line-oriented text output (not TextBoxes), and PictureBoxes for pictures (not drawings).
modified on Friday, June 10, 2011 12:16 PM
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DoTask is a asynchronous task, it spawn a thread to do its stuff and return immediately. It is not sure when it is finished. The completion of the task is notified though OnTaskComplete.
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Wong Shao Voon wrote: DoTask is a asynchronous task, it spawn a thread to do its stuff and return immediately
That doesn't make any difference. You still can use a queue and execute the jobs from the queue. If the queue is empty consider all the job done. You can make this queue accessible to all the threads so that other threads can enqueue new tasks.
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right.
just make sure to provide some synchronization (say a lock) so the queue doesn't get messed up.
Luc Pattyn [Forum Guidelines] [My Articles]
I use ListBoxes for line-oriented text output (not TextBoxes), and PictureBoxes for pictures (not drawings).
modified on Friday, June 10, 2011 12:17 PM
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That's correct
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Wong Shao Voon wrote: Is event calling done in the caller or it is dispatched to be done at a later time?
Event firing is synchronous i.e. performed on the thread that fires the event.
However, if DoTask is asynchronous, then it will run on a different thread and therefore you won't get into infinite recursion.
DoTask -> TaskCompleted -> OnTaskCompleted -> Method End
|-> DoTask -> TaskCompleted ....
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Hi
There is a peculiar requirement of copying in clipboard data as an OLE object into a RichTextBox.
I am using the clipboard object to retrieve the contents in an rtf format.
this.richTextBox1.SelectedRtf = Clipboard.GetData(System.Windows.Forms.DataFormats.Rtf).ToString();
Is it possible to copy the clipboard data as OLE object rather than an rtf.
Regards
Gaurav
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Found this[^] here on CodeProject.
Enjoy
I are troll
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how should i implement
**a
in c# equivalent
the quieter u become more u hear
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I'd suggest to take a good C# book and work with it.
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bool HMM::readHMM(FILE *fp)
the above code is vc++..
wat is the equivalent in c#
the quieter u become more u hear
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lawrenceinba wrote: wat is the equivalent in c#
There is no equivalent in C#. Create the class HMM and add readHMM as a static method. System.IO.File class can be used to work with files, but since it is a static class, you can't pass the instance.
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I've got a boolean IsDirty property on my object Foo. When a change happens on my object I set IsDirty to true. Later when I go to save my object I check IsDirty and it is set to false.  
I've set breakpoints both on the Set and the Get for my property. The only time the value is set is when I set it to true. Yet after it's set to true when I try to read the value it comes back as false. The only place my variable mIsDirty is used is in my IsDirty property Get and Set.
I've tried renaming and re-creating the property but the problem remains. Something has got to be changing my property but the the breakpoint on my Set is never hit and I'm not using mIsDirty elsewhere. I've never had a boolean property misbehave before. This is driving me insane.
Has anyone else ever encountered a problem like this or have a suggestion on how to debug it?
My code for the property is setup as follows:
private bool mIsDirty;
internal bool IsDirty
{
get
{
return mIsDirty;
}
set
{
mIsDirty = value;
}
}
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Add this.text = misdirty to the setter
Then keep an eye on the form text, may help when the value changes if not why.
Why not use an auto property and eliminate misdirty altogether (then there is NO chance it will be set somewhere).
Never underestimate the power of human stupidity
RAH
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