On Media player - C# Discussion Boards

George_George19-Apr-08 4:52

19-Apr-08 4:52

Thanks Dave,

Do you think my understanding here is correct?

http://www.codeproject.com/script/Forums/View.aspx?fid=1649&msg=2514622[^]

regards,
George

Re: object destroy

Guffa19-Apr-08 4:37

Guffa

19-Apr-08 4:37

George_George wrote:
Why if Finalizer exists, the order of GC are not decided? In other words, if no Finalizer methods, the order is decided?

If there is a Finalizer method, the object can not be garbage collected until the Finalizer has been called.

If there are no Finalizer methods, the order of garbage collection is still not possible to foresee, but then it doesn't matter. With no Finalizer, nothing happens when the object is removed, it just goes away.

Despite everything, the person most likely to be fooling you next is yourself.

Re: object destroy

George_George19-Apr-08 4:51

George_George

19-Apr-08 4:51

Thanks Guffa,

Let me confirm, in the situation when class1 is the only instance who holds the reference to obj1.

1. If both of them have Finalizer methods, the order of whether Finalizer method of class1 or Finalizer method of obj1 is called is not decided;

2. If both of them do have Finalizer methods, the order of whether class1 or obj1's memory will be reclaimed is not decided.

My understanding correct?

regards,
George

Re: object destroy

Guffa19-Apr-08 5:30

Guffa

19-Apr-08 5:30

George_George wrote:
1. If both of them have Finalizer methods, the order of whether Finalizer method of class1 or Finalizer method of obj1 is called is not decided;

Exactly. They will be placed on the queue to be finalized in the order that the garabge collector happens to notice that the object is unused and that it has a Finalizer method.

George_George wrote:
2. If both of them do have Finalizer methods, the order of whether class1 or obj1's memory will be reclaimed is not decided.

Exactly. When the finalisers has been run, the objects are up for garbage collection just like any other object without a Finalizer method, so it's not even sure that they will be collected in the same order that they were finalised.

Despite everything, the person most likely to be fooling you next is yourself.

Re: object destroy

George_George19-Apr-08 20:48

George_George

19-Apr-08 20:48

Thanks Guffa,

Cool!

regards,
George

Re: object destroy

Dave Kreskowiak19-Apr-08 7:12

Dave Kreskowiak

19-Apr-08 7:12

George_George wrote:
1. If both of them have Finalizer methods, the order of whether Finalizer method of class1 or Finalizer method of obj1 is called is not decided;

George_George wrote:
2. If both of them do have Finalizer methods, the order of whether class1 or obj1's memory will be reclaimed is not decided.

True. There is never a decision on finalization and memory reclaim orders, no matter what the situation. Since the GC walks the managed heap object tree looking for objects that no longer have references to them, it can encounter objects in any order in memory, hence no order is deterministically possible.

By your statements, it also seems as though you have the meaning of Class and Object a bit confused. Classes never have a reference to anything. It's just a template to create an object with. An Object is an instance of a Class. So your 1st statement should actually be:

...in the situation when Object1 is the only instance that holds the reference to Object2.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

Re: object destroy

George_George19-Apr-08 20:48

George_George

19-Apr-08 20:48

Thanks for your clarification, Dave!

regards,
George

On Media player

varun.g19-Apr-08 1:12

varun.g

19-Apr-08 1:12

I've created media player using sound dll's of windows.
Its woking...But my doubts are..
1) How can i associate it to the mp3 and wave files in my system?
2) How can i make a selection sequence in program for the user to select or to use my program as his default player for mp3/wave?
And help me on the code to make a progressbar while its playing..
Thanks in advance
varun

Re: On Media player

Anthony Mushrow19-Apr-08 2:09

Anthony Mushrow

19-Apr-08 2:09

Well, this[^] seems to show how you can associate a filetype with your program. As for setting it as the default, that would require a whole new google search.

My current favourite word is: Bacon!

-SK Genius

How to create MultiColumn ListBox

Muhammad Gouda18-Apr-08 23:36

Muhammad Gouda

18-Apr-08 23:36

I set the property MultiColumn to True
But how to define the number of columns and how to add items to those columns?

Mohammed Gouda
foreach(Minute m in MyLife)
myExperience++;

Re: How to create MultiColumn ListBox

Rob Smiley19-Apr-08 0:20

Rob Smiley

19-Apr-08 0:20

The listBox will automatically create new columns in preference to using a vertical scrollbar - you cant tell the control how many columns to use. Try using the listView control instead. Set the View property to Details and add items to the Columns collection

Regards, Rob

"An eye for an eye only ends up making the whole world blind"

Re: How to create MultiColumn ListBox

Muhammad Gouda19-Apr-08 3:30

Muhammad Gouda

19-Apr-08 3:30

Still I can add items to first column
How to populate the second column

below is my code

private ListView lv;
.
.
.
//Creating 2 columns with headers "Column1" and "Column2"
lv.Columns.Add("Column1",400,HorizontalAlignment.Center);
lv.Columns.Add("Column2",400,HorizontalAlignment.Center);


lv.Items.Add("row1");
lv.Items.Add("row2");

Mohammed Gouda
foreach(Minute m in MyLife)
myExperience++;

Re: How to create MultiColumn ListBox

Rob Smiley19-Apr-08 3:48

Rob Smiley

19-Apr-08 3:48

Use the ListViewItem class in the Items.Add method, e.g.

lv.Items.Add(new ListViewItem(new string[] { "Column 1", "Column 2" }));

there are many other constructor overloads for this class if you want to add images, grouping etc.

Regards, Rob

"An eye for an eye only ends up making the whole world blind"

Re: How to create MultiColumn ListBox

Charith Jayasundara20-Apr-08 2:56

Charith Jayasundara

20-Apr-08 2:56

http://www.codeproject.com/KB/combobox/multicolumnlistbox.aspx[^]

Charith Jayasundara

Re: How to create MultiColumn ListBox

Muhammad Gouda20-Apr-08 4:46

Muhammad Gouda

20-Apr-08 4:46

Thanks,
I searched within CP for such an article but found nothing
Many thanks for you and for Mr. Chris Rickard

Mohammed Gouda
foreach(Minute m in MyLife)
myExperience++;

Crystal Report Work with C#

Thaer Hamael18-Apr-08 23:05

Thaer Hamael

18-Apr-08 23:05

hi all
I Wount to set the data source of crystal report from dataTable .
how i can do that ?
thanks for any boudy hellp me Rose | [Rose]

Thaer

Re: Crystal Report Work with C#

Bert delaVega19-Apr-08 0:38

Bert delaVega

19-Apr-08 0:38

I don't use Crystal Reports much but I would think the .SetDataSource method is what you need.

PerformanceCounter Problem

stancrm18-Apr-08 23:00

stancrm

18-Apr-08 23:00

Hello...

I have a problem with PerformanceCounter. I'm using 2 PC (Desktop and Notebook).
In desktop I can explore the PerformanceCounter in Server Explorer. But in Notebook I cannot explore the PerformanceCounter. The error message is "Input string was not in correct format".

Is there something wrong in my notebook ?
Do I need to install something to use the performance counter ?

I want to use the PerformanceCounter to create an application to monitor Download/Upload Speed.

Thanks a lot...

Re: PerformanceCounter Problem

Anthony Mushrow19-Apr-08 2:12

Anthony Mushrow

19-Apr-08 2:12

Did you check what the string was? If it says its not in the correct format, the first thing i would do is take a look at it.

My current favourite word is: Bacon!

-SK Genius

Re: PerformanceCounter Problem

stancrm19-Apr-08 11:15

stancrm

19-Apr-08 11:15

It comes from Visual Studio, I don't write any codes. It just a message box.

How to get TaskFlow output as XML file from DSL tool

Maddie from Dartford18-Apr-08 18:32

Maddie from Dartford

18-Apr-08 18:32

Hello,

I am using TaskFlow template in my DomainSpecificLanguage(DSL) tool's application.

How can i save the output of Debugging application's model output as XML file?

What ever flow i define in Model(diagram) design file of Debugging application, i want to serialize them as XML file.

I read some where that using Directive Processor, it is possible but i am not getting much help on it.

Any help regarding XML output will give me some way to move forward.

Thanks.

windows service using C# read from SQL database

Knowledgestudent18-Apr-08 12:09

Knowledgestudent

18-Apr-08 12:09

hi there,

I really need a help , where I am developing a windows service which is supposed to check an entry in the database before the windows log on , but when I tested the code the service had not perform the check or could not actually I do not know if it could connect to the SQL server before the log on or not
I need guidance in this topic,
any help is appreciated ,
thanks in advance

There is always something to learn

Re: windows service using C# read from SQL database

PIEBALDconsult18-Apr-08 13:41

PIEBALDconsult

18-Apr-08 13:41

When a user logs on? You don't use a service for that.

Re: windows service using C# read from SQL database

Knowledgestudent19-Apr-08 7:35

Knowledgestudent

19-Apr-08 7:35

actually I need it that way , in my work in order to test some information before the user log on into his account ,
In other word how can I make sure that the SQL server is available before the log on ,

your help is really appreciated ,
Thanks

There is always something to learn

Re: windows service using C# read from SQL database

PIEBALDconsult20-Apr-08 16:31

PIEBALDconsult

20-Apr-08 16:31

How will the service know that a user is about to log in and who?

The check should occur during the log in process.

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