C# Discussion Boards - CodeProject

Re: Problem with Event and Timer

Leon van Wyk18-Nov-04 1:36

Leon van Wyk

18-Nov-04 1:36

Thank you so much! How do I send variables to the method that I invoke?

<br />
private delegate void NewSMSReceived();<br />
protected void OnNewSMSReceived()<br />
		{<br />
			int Position = 1;<br />
			Solutions.Gsm.Modem.SMSMessageReceive SMS = Gsm.ReadSms(Position,true);<br />
			SMSReceivedForm NewSMS = new SMSReceivedForm(SMS);<br />
			NewSMS.ShowDialog();<br />
		}<br />
private void Gsm_NewSMSReceived(object sender, Being.IT.Solutions.Gsm.Modem.NewSMSEventArgs e)<br />
		{<br />
			lbInfo.Text = "New SMS received @ "+ DateTime.Now.ToString();<br />
			Solutions.Multimedia.SoundPlayer.Play(Application.StartupPath+@"\NewSMSNotify.wav");<br />
<br />
			//e.StoragePosistion<br />
			this.BeginInvoke( new NewSMSReceived( this.OnNewSMSReceived) );<br />
<br />
			<br />
		}<br />

Leon v Wyk

Re: Problem with Event and Timer

Daniel Turini18-Nov-04 23:16

Daniel Turini

18-Nov-04 23:16

Leon v Wyk wrote:
//e.StoragePosistion
this.BeginInvoke( new NewSMSReceived( this.OnNewSMSReceived) );
This becomes (I removed all the 'this.', I find it weird):
Invoke(new MethodInvoker(OnNewSMSReceived), new object[] { your variables go here });
Other alternative would be using properties, since you're on different threads, but will be invoking methods on the same object ('this.').

Yes, even I am blogging now!

Stopping a com object

totig17-Nov-04 22:58

totig

17-Nov-04 22:58

I just want to know if its possible to do the following, but first, some background. I have a com dll which I connect to through C#. The dll has a connect property which is the first method you call. This method attempts to locate an electricity server. I want to find out if I can stop this method from executing after a certain period of time if no server is found within that time limit. The dll has no settings to set a timeout, and the people who make the dll are to "busy" to do anything about it. It does throw an Exception when it does not connect, but this is after about 20 seconds, and I would prefer this to be around 5. Please let me know how to do this if this can be done.

Re: Stopping a com object

Daniel Turini17-Nov-04 23:13

Daniel Turini

17-Nov-04 23:13

I've tried stopping COM objects before (in C++, not in C#), and all I can say is that it's simply not reliable if you do it in-process (e.g., loading a DLL). I tried creating the object in another apartment, asynchronous COM calls, aborting the threads, etc, and nothing was reliable enough. After a while instability started to happen.
The only reliable way I found was using out of process COM servers (.exe), so as I killed the process, the OS done all the cleanup needed. I suggest you to load this dll in a surrogate process and kill it when you need to cancel the call.
I know that starting and stopping processes in Windows is not a fast task, but in some cases, it can be fast enough for what you need.

Yes, even I am blogging now!

Looking for efficient way to insert records

Reinier Beeckman17-Nov-04 21:10

Reinier Beeckman

17-Nov-04 21:10

Got an web application where users can select applications they would like to use. They can choose several applications. The choices i want to store in a database. A table with fields like userid, appname. The combination of the two can occur only once.

I can of course use an insert statement and loop for the number of applications but i was wondering if .net has a better way. Something like filling up a dataset and passing the dataset to a insert method.

Glad to hear some suggestions.

Highlight SelectedText's Background in RichTextBox

orlyg17-Nov-04 20:59

orlyg

17-Nov-04 20:59

I am implementing a UI for debugger, and trying to do a step mechanism where the current source code line is highlighted (its background is colored).
So basicly I am trying to set a background for the selected text (only).

Any ideas?

Thanks,

Orly

Re: Highlight SelectedText's Background in RichTextBox

Daniel Turini17-Nov-04 23:19

Daniel Turini

17-Nov-04 23:19

I believe that the RichTextBox is fast enough for a debugger, so I would suggest you to use it, as it's easy to change colors, fonts, etc, of the text.

Yes, even I am blogging now!

Re: Highlight SelectedText's Background in RichTextBox

OrlyGoren18-Nov-04 6:06

OrlyGoren

18-Nov-04 6:06

I am intending to use the RichTextBox, but I haven't found an easy way to color the background only of a selectedText...

Re: Highlight SelectedText's Background in RichTextBox

leppie18-Nov-04 8:34

leppie

18-Nov-04 8:34

You will have to use interop. IIRC something with CHARFORMAT2 struct. Pretty easy to do.

^{top secret
Download xacc-ide 0.0.3 now!
See some screenshots}

hardware control

Mridang Agarwalla17-Nov-04 20:57

Mridang Agarwalla

17-Nov-04 20:57

have anyof you made projects related to hardware....and interfaced it with c# i.e parallel port, serial port or usb devices....if so...How???? OMG | :OMG:

windows context menu

Mridang Agarwalla17-Nov-04 20:53

Mridang Agarwalla

17-Nov-04 20:53

can anyone tell me how add a command to windows explrere context menu and how do i interface my program with it.... Confused | :confused:

Re: windows context menu

Luis Alonso Ramos19-Nov-04 9:16

Luis Alonso Ramos

19-Nov-04 9:16

It's called a Context Menu Shell Extension (there are others like Property Sheet Shell Extensions to add your own tab to the File Properties dialog.)

Search on CodeProject, there are several good articles and tutorials.

See this: Search Results[^]

Most articles are for C++ or MFC, but there's an article on page 2 about a property sheet extension in C#. Take a look.

-- LuisR

Luis Alonso Ramos
Intelectix - Chihuahua, Mexico

Not much here: My CP Blog!

taskbar button grouping

yu-yu17-Nov-04 18:33

yu-yu

17-Nov-04 18:33

Hello

I'd like to be grouping taskbar button.
I know how to set group on registry. But this setting is for user.
I'd like to do for my application, so I need to develop this function.

If you have some solutions, please tell me.

regards,
yu-yu

User COntrols

Brendan Vogt17-Nov-04 18:31

Brendan Vogt

17-Nov-04 18:31

Hi,

Please look at www.sahometraders.co.za. I have to do the website in ASP.NET, and I want to get started with the top menu. People say that I must use a user control for this. I'm not entirely sure how to do this. I will be using C#. COuld someone please send some sample code, or give me a link where I can download some good sample code on how to create this type of control. Any links to other good articles will be appreciated.

When will I use user controls? People say I must use a an includes files, so if I were to use an include file in the old ASP, would I then just have to create a user control every time?

BRENDAN

Re: User COntrols

R. Thomas17-Nov-04 19:28

R. Thomas

17-Nov-04 19:28

already answered in ASP.NET forum of CP

"Rejoice always, pray without ceasing, in everything give thanks; for this is the will of God in Christ Jesus for you."1Thess. 5:16-18

Re: User COntrols

leppie17-Nov-04 22:44

leppie

17-Nov-04 22:44

What ever you do, remove that javascript (i think its that) that is causing 100% CPU usage. Its insane! dont even try fix that code just delete it! :p

^{top secret
Download xacc-ide 0.0.3 now!
See some screenshots}

tlbimp metadata generation

rana7417-Nov-04 14:59

rana74

17-Nov-04 14:59

An idl as the one below
import "oaidl.idl";
import "ocidl.idl";
[
object,
uuid(1F797987-FC69-43F7-B263-F93001092B6B),

helpstring("ICOMDispatcher Interface"),
pointer_default(unique)
]
interface ICOMDispatcher : IUnknown
{
[helpstring("method ProcessFBOData")] HRESULT ProcessData([in]BSTR xmlStream);
};

[
uuid(A3359D17-EDC8-4F58-A00E-75EB1A13EE85),
version(1.0),
helpstring("ScriptIfDispatcher 1.0 Type Library")
]
library SCRIPTIFDISPATCHERLib
{
importlib("stdole32.tlb");
importlib("stdole2.tlb");

[
uuid(A250FE7E-2E0A-4FD7-B770-E338FFDD7465),
helpstring("COMDispatcher Class")
]
coclass COMDispatcher
{
[default] interface ICOMDispatcher;
};
};

generates a metadata as below

___[MOD] D:\Code\CScriptAppInterface\ScriptIfDispatcher\ScriptDispatcher.dll
| M A N I F E S T
|___[NSP] ScriptDispatcher
| |___[INT] COMDispatcher(>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>.interface 1)
| | | .class interface public abstract auto ansi import
| | | implements ScriptDispatcher.ICOMDispatcher
| | | .custom instance void [mscorlib]System.Runtime.InteropServices.GuidAttribute::.ctor(string) = ( 01 00 24 31 46 37 39 37 39 38 37 2D 46 43 36 39 // ..$1F797987-FC69 ...
| | | .custom instance void [mscorlib]System.Runtime.InteropServices.CoClassAttribute::.ctor(class [mscorlib]System.Type) = ( 01 00 23 53 63 72 69 70 74 44 69 73 70 61 74 63 // ..#ScriptDispatc ...
| |
| |___[CLS] COMDispatcherClass(>>>>>>>>>>>>>>>>>>>>>>>>>>>>class )
| | | .class public auto ansi import
| | | implements ScriptDispatcher.ICOMDispatcher
| | | implements ScriptDispatcher.COMDispatcher
| | | .custom instance void [mscorlib]System.Runtime.InteropServices.GuidAttribute::.ctor(string) = ( 01 00 24 41 32 35 30 46 45 37 45 2D 32 45 30 41 // ..$A250FE7E-2E0A ...
| | | .custom instance void [mscorlib]System.Runtime.InteropServices.ClassInterfaceAttribute::.ctor(int16) = ( 01 00 00 00 00 00 ) ...
| | | .custom instance void [mscorlib]System.Runtime.InteropServices.TypeLibTypeAttribute::.ctor(int16) = ( 01 00 02 00 00 00 ) ...
| | |___[MET] .ctor : void()
| | |___[MET] ProcessFBOData : void(string)
| |
| |___[INT] ICOMDispatcher(>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>interface 2)
| | | .class interface public abstract auto ansi import
| | | .custom instance void [mscorlib]System.Runtime.InteropServices.GuidAttribute::.ctor(string) = ( 01 00 24 31 46 37 39 37 39 38 37 2D 46 43 36 39 // ..$1F797987-FC69 ...
| | | .custom instance void [mscorlib]System.Runtime.InteropServices.InterfaceTypeAttribute::.ctor(int16) = ( 01 00 01 00 00 00 ) ...
| | |___[MET] ProcessFBOData : void(string)
| |
|
I would have expected a class COMDispatcher and interface ICOMDispatcher as per the idl.Then why are the interface COMDispatcher and class COMDispatcherclass introcuded?Can someone explain the purpose of this modification while generating metadata.Any reference will also be appreciated.

how to get click event of windows taskbar button.

yu-yu17-Nov-04 14:53

yu-yu

17-Nov-04 14:53

hello.

Do you know how to get click event of taskbar button.
Windows form object have a taskbar button.
When I clicked, I'd get event.
The event I think is not windows style change.

please tell me.

regards,
yu-yu

Concurrently accessing a file.

Rafferty Uy17-Nov-04 14:49

Rafferty Uy

17-Nov-04 14:49

Hello there,

I just wanted to make sure before I attempt to do anything. It's okay to concurrently access a file as long as it's only being read right?

Thanks

Rafferty

Re: Concurrently accessing a file.

Dennis C. Dietrich17-Nov-04 15:15

Dennis C. Dietrich

17-Nov-04 15:15

Rafferty Uy wrote:
It's okay to concurrently access a file as long as it's only being read right?

This is generally true. However keep in mind that you'll never know in advance what other running processes might do with the file you want to read. If the file has already been opened without the FileShare.Read flag set you will get an exception. Also you might want to set specific FileShare[^] flags yourself when you open the file (for example to prevent that another process writes to the file while you're reading it).

Best regards
Dennis

Re: Concurrently accessing a file.

Rafferty Uy17-Nov-04 16:09

Rafferty Uy

17-Nov-04 16:09

Hm.. things are getting complicated, because I'm going to access the file using DTS in SQL Server. And come to think of it, I might be renaming the file somewhere along the way. uhh.. haha I think I need to detail the design a bit more. D'Oh! | :doh:

Thanks for the tip!

Rafferty

What is more scientific...

tom_dx17-Nov-04 13:36

tom_dx

17-Nov-04 13:36

A neural network that composes music or a batch creator. if you have your own ideas post 'em up. Big Grin | :-D

IM PROUD TO BE A GMAIL;

Re: What is more scientific...

R. Thomas17-Nov-04 19:31

R. Thomas

17-Nov-04 19:31

in case of more scientific, i think the neural network would be more scientific...
btw : wats the meaning of -> IM PROUD TO BE A GMAIL;

"Rejoice always, pray without ceasing, in everything give thanks; for this is the will of God in Christ Jesus for you."1Thess. 5:16-18

Re: What is more scientific...

Daniel Turini17-Nov-04 23:15

Daniel Turini

17-Nov-04 23:15

Whatever you've been smoking or drinking, it seems good Smile | :)

Yes, even I am blogging now!

Advanced collection classes for the .NET Framework 2.0

Dennis C. Dietrich17-Nov-04 11:08

Dennis C. Dietrich

17-Nov-04 11:08

I guess I'm not the only one who always thought that the .NET Framework 1.x collections were lacking of some useful features. Implementing the version 2 collections with generics made them more flexible and easier to use. However one might still miss some features.

It is the intention of the Power Collections open/shared source project to furthermore close the gap in the list of features with additional collection classes written in C#. The project is co-sponsored by Microsoft and Wintellect and led by Peter Golde[^]. Developers are welcome to participate as it is still in progress and not even the specification has been finalized yet.

Power Collections Project Homepage[^]
MSDN Community Center (CodeWise): Power Collections[^]

Best regards
Dennis

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