Re: Tracking Object Creation of Remotable Object - C# Discussion Boards

Ryan Binns20-Aug-03 17:18

20-Aug-03 17:18

When BeginInvoke() is called on a delegate with multiple event handlers registered, do all the event handlers get called synchronously in a single thread, or do they all get their own thread? Or can only one event handler be called for an asynchronous delegate?

I can't find this in the docs.

Ryan

"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"

Re: Asynchronous Delegates

J. Dunlap20-Aug-03 18:06

J. Dunlap

20-Aug-03 18:06

Ahh, asking a question in the C# forum! Big Grin | :-D

You know, I really ought to do a test on this one, but so far, it seems that they are each called on separate threads. But I know for sure that they all get called.

"Blessed are the peacemakers, for they shall be called sons of God." - Jesus

"You must be the change you wish to see in the world." - Mahatma Gandhi

Re: Asynchronous Delegates

Ryan Binns20-Aug-03 18:14

Ryan Binns

20-Aug-03 18:14

Thanks Justin Smile | :)

I've managed to get asynchronous delegates working in C++, but I've had to use the inline assembler Unsure | :~

. It works nicely though Smile | :)

Ryan

"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"

Re: Asynchronous Delegates

J. Dunlap20-Aug-03 18:19

J. Dunlap

20-Aug-03 18:19

Ryan Binns wrote:
Thanks Justin

Big Grin | :-D

Ryan Binns wrote:
I've managed to get asynchronous delegates working in C++

Congrats!

Ryan Binns wrote:
but I've had to use the inline assembler

That's what it's good for - doing things that either you can't do very well otherwise, or that are too slow otherwise. Smile | :)

BTW, there's now a GotDotNet Workspace[^] for Fluid, and I've got some ASP.NET hosting.

"Blessed are the peacemakers, for they shall be called sons of God." - Jesus

"You must be the change you wish to see in the world." - Mahatma Gandhi

Re: Asynchronous Delegates

Ryan Binns20-Aug-03 18:57

Ryan Binns

20-Aug-03 18:57

jdunlap wrote:
That's what it's good for - doing things that either you can't do very well otherwise, or that are too slow otherwise.

Or doing things that are impossible - stack manipulation Smile | :)

jdunlap wrote:
there's now a GotDotNet Workspace[^] for Fluid

I've just applied for membership, so you should get something soon...

Ryan

"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"

Re: Asynchronous Delegates

J. Dunlap20-Aug-03 19:05

J. Dunlap

20-Aug-03 19:05

Ryan Binns wrote:
I've just applied for membership, so you should get something soon...

...and you've just gotten membership! Smile | :)

"Blessed are the peacemakers, for they shall be called sons of God." - Jesus

"You must be the change you wish to see in the world." - Mahatma Gandhi

Tracking Object Creation of Remotable Object

Ozyris20-Aug-03 15:40

Ozyris

20-Aug-03 15:40

I have written .NET remoting project and am looking for a way to know when each and every instance of a SingleCall/Singleton object is created and destroyed.

Does anyone know how to do this? Confused | :confused:

Re: Tracking Object Creation of Remotable Object

Okeno Palmer21-Aug-03 6:57

Okeno Palmer

21-Aug-03 6:57

I don't know much about remoting but the idea of a singelton is that there will only be one instance of it during the lifetime of the application. This is usually accomplished by making the varaible a static. Note that there will really only ever be just 1 instance of your Singleton if that is the case.

One approach is to have a static tracker that is incremented in the constructor of your Singleton class and decremented in the destructor.

Ex:

class SingleFella
{
private static int tracker = 0;
private static SingleFella m_instance = null;

public static SingleFella GetInstance()
{
if( m_instance == null )
m_instance = new SingleFella();
return m_instance;
}

public static void DestroyInstance()
{
m_instance = null;
}

private SingleFella()
{
tracker++;
System.Console.WriteLine("Tracker (Constructor)= " + tracker);
}

~SingleFella()
{
tracker--;
m_instance = null;
System.Console.WriteLine("Tracker (Destructor)= " + tracker);
}

public static void Main(String [] args)
{
SingleFella instance1 = SingleFella.GetInstance();
SingleFella instance2 = SingleFella.GetInstance();
SingleFella instance3 = SingleFella.GetInstance();
SingleFella instance4 = SingleFella.GetInstance();
SingleFella.DestroyInstance();
}
}

Give that sample a run and move around the call to DestroyInstance() and you will see the effect.

I'm not quite sure if this is what you are looking for but this is how the Singleton Design Pattern works.

..:: Keno ::..

How to make DataGrid column read only at runtime

sumeat20-Aug-03 14:58

sumeat

20-Aug-03 14:58

Hi,

I need to make a data grid column read only based on the
value chosen in another column.

I have custom table style for the grid, the column styles
are of type DataGridTextBoxcolumn. I made the
DataGridTextBoxColumn for the particular column read-only
at runtime but that does not work.

I would appreciate any help.

Thanks

Re: How to make DataGrid column read only at runtime

Ista20-Aug-03 16:10

Ista

20-Aug-03 16:10

DataGridTextBoxColumn dgt = new DataGridTextBoxColumn();
dgt.ReadOnly = true;

I'm not an expert yet, but I play one at work. Yeah and here too.

Re: How to make DataGrid column read only at runtime

sumeat21-Aug-03 7:59

sumeat

21-Aug-03 7:59

Thanks it worked!

Earlier I intended to do the same but mistakenly instead of setting the readonly property of the textboxColumn I was setting the readonly property of the textbox in the textboxColumn.

Suhas

Re: How to make DataGrid column read only at runtime

Ista21-Aug-03 9:43

Ista

21-Aug-03 9:43

LOL

I'm not an expert yet, but I play one at work. Yeah and here too.

Re: How to make DataGrid column read only at runtime

A.Wegierski21-Aug-03 7:48

A.Wegierski

21-Aug-03 7:48

As usual. Create an inherited DataGridTextBoxColumn and override Edit method to call base.Edit(...) only if Your another column has appropriate values.

Hi,
AW

Can't get manifest to work for my xp style controls

IrishSonic20-Aug-03 14:33

IrishSonic

20-Aug-03 14:33

Hiya I want to use xp style controls and have been reading about using manifest files to do this.

But I can't get it to work for me. My project is called "form". ( a test!! )

These are the steps I have taken so far:
1. Opened new file in notepad and added (removed arrows for display. )

?xml version="1.0" standalone="yes"?
assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0"
description>form/form
dependency
dependentAssembly
assemblyIdentity
type="win32"
name="Microsoft.Windows.Common-Controls"
version="6.0.0.0"
publicKeyToken="6595b64144ccf1df"
language="*"
processorArchitecture="X86" /
/dependentAssembly
/dependency
/assembly

2. Renamed this .txt file to form.exe.manifest

3. Copied the file in my project folder.

4. Set the controls FlatStyle to System.

But it still doesn't work. What am I doing wrong??
(version visual c# 1.0)

thanks
grahamoj.

Re: Can't get manifest to work for my xp style controls

eggie520-Aug-03 17:15

eggie5

20-Aug-03 17:15

You may have put it in you "project" folder... But did you put it in your "Debug" folder???

Suspicious | :suss:

/\ |_ E X E GG

HTML to PDF

Iftikhar Ahmad Dar20-Aug-03 11:56

Iftikhar Ahmad Dar

20-Aug-03 11:56

Is there any wayout to convert HTML to PDF?

clr.

Re: HTML to PDF

Ista20-Aug-03 14:34

Ista

20-Aug-03 14:34

iSEDQuickPDF.com 65.00 for the control

I'm not an expert yet, but I play one at work. Yeah and here too.

Re: HTML to PDF

leppie21-Aug-03 7:04

leppie

21-Aug-03 7:04

Look at MikTeX, a Win32 based TeTeX package

leppie ::AllocCPArticle(Generic DFA State Machine for .NET);

dataGrid1.Width is acting funny

Anonymous20-Aug-03 11:15

Anonymous

20-Aug-03 11:15

i have a new form inheriting from another form. the new form has a datagrid in it.

i'm creating a table style so my datagrid cells will fill the entire width, but my datagrid.width is not working correctly. it gives out a width entirely too small.

for example:

. . . . . . . .
DataGridTextBoxColumn ProductID = new DataGridTextBoxColumn();
ProductID.HeaderText = "Product";
ProductID.MappingName = "ProductID";
ProductID.Width = 100;

DataGridTextBoxColumn Comments = new DataGridTextBoxColumn();
Comments.HeaderText = "Comments";
Comments.MappingName = "Comments";
Comments.Width = dg.width - 100;
. . . . . . . .

the Comments column is very small. i've used this in other applications, but this one is acting funny. i'm wondering if it might have to do with the inheritance. ( note, the datagrid is not being inherited )

Re: dataGrid1.Width is acting funny

Ista20-Aug-03 14:35

Ista

20-Aug-03 14:35

well you have to account for row header size - a few pixels, plus it rounds. jusy play with it

Column.Width = dg.width - dg.rowheaderwidth -3;

I'm not an expert yet, but I play one at work. Yeah and here too.

Re: dataGrid1.Width is acting funny

A.Wegierski21-Aug-03 7:53

A.Wegierski

21-Aug-03 7:53

And next, autosize Your column in OnPaint method OMG | :OMG:

. Another events work poor

Hi,
AW

MDI question in C++.Net

Qbus20-Aug-03 11:04

Qbus

20-Aug-03 11:04

Hi guys,

Sorry to bother you with such a dumb question, I've been trying to figure it out for days now. All I want to do for an application is that after reading in data from a file (I've done), I want to graph it (I know how to graph) in different ways in different windows. Basically my question is how do I, upon user's command from a menu choice, bring up a new window, a new window and assign a certain view to that window.

In summary I have about 10 different views(with a different graph on each view). What I want to know is how do I, anytime a user wants to see one of them, display a new window on top(MDI) with the according view attached to that window.

Please could you reply with an answer.
Thank you respectfully

Raj Qbus Surendra

Re: MDI question in C++.Net

Ista20-Aug-03 14:36

Ista

20-Aug-03 14:36

hey dude its c#.net forum

I'm not an expert yet, but I play one at work. Yeah and here too.

Need Help!

t_m2002052120-Aug-03 10:36

t_m20020521

20-Aug-03 10:36

Does anyone knows how to create a class which will calculate Net Volumes from Pressure, Temperature and gas quality according to AGA (AGA-3, AGA-5 AND AGA-8) standards?
Thanks. Mike

Re: Need Help!

Ista20-Aug-03 14:37

Ista

20-Aug-03 14:37

look up the formulas and move them into methods

I'm not an expert yet, but I play one at work. Yeah and here too.

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