thread safety in Windows Service design - C# Discussion Boards

14-Apr-08 4:00

Thanks Guffa,

Question answered.

regards,
George

Hiding a tabPage

Harvey Saayman14-Apr-08 2:40

Harvey Saayman

14-Apr-08 2:40

hey guys

i need to hide or disable one of the pages in my tab control, but i cant find visible or enabled properties?

how else can i do it?

thanx

Harvey Saayman - South Africa
Junior Developer
.Net, C#, SQL
think BIG and kick ASS

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phannon⁸⁶14-Apr-08 2:53

phannon⁸⁶

14-Apr-08 2:53

From MSDN:

Additionally, the Hide method of the TabPage will not hide the tab. To hide the tab, you must remove the TabPage control from the TabControl..::.TabPages collection.

He who makes a beast out of himself gets rid of the pain of being a man

Harvey Saayman14-Apr-08 2:56

Harvey Saayman

14-Apr-08 2:56

thanx... but how will i put it back if its removed from the tabcontrol?

Harvey Saayman - South Africa
Junior Developer
.Net, C#, SQL
think BIG and kick ASS

you.suck = (you.passion != Programming)

phannon⁸⁶14-Apr-08 2:59

phannon⁸⁶

14-Apr-08 2:59

My thoughts too, could you perhaps store the removed object locally somehow?

He who makes a beast out of himself gets rid of the pain of being a man

thread safety in Windows Service design

Harvey Saayman14-Apr-08 3:02

Harvey Saayman

14-Apr-08 3:02

i think i could... everything being objects and all that.

thanx man, ill see how it works

Harvey Saayman - South Africa
Junior Developer
.Net, C#, SQL
think BIG and kick ASS

you.suck = (you.passion != Programming)

George_George14-Apr-08 2:28

14-Apr-08 2:28

Hello everyone,

For Windows Service, for example class Service1 is the main class of my service application, which derives from ServiceBase. I am wondering whether it is possible that two concurrent access to the following 3 cases?

1. the constructor of Service1;
2. OnStart method of Service1;
3. OnStop method of Service.

If yes, I need some synchronizaton control in them. If yes, in what situation the three methods will be called concurrently? We are able to start/stop the same service with different instances (processes) at the same time?

thanks in advance,
George

Dario Solera14-Apr-08 2:35

Dario Solera

14-Apr-08 2:35

I'm not really an expert here, but I think that since Windows Services are all handled in a unique central place, there is no need to worry about the constructor/OnStart/OnStop methods. However, you have to worry about access to other resources your service might use during normal operations.

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George_George14-Apr-08 2:44

14-Apr-08 2:44

Thanks Dario,

Is it possible that two different instances (processes) for the same Windows service will be started and run at the same time?

regards,
George

Dario Solera14-Apr-08 3:00

Dario Solera

14-Apr-08 3:00

George_George wrote:
Is it possible that two different instances (processes) for the same Windows service will be started and run at the same time?

No, unless you create two different services that point to the same executable.
Anyway, a service can be started only once, even using command-line tools or WMI.

On the other hand, two processes do not implicitly share memory, so you would not have concurrency problems even in the case a service was started twice, except for file access I guess (remember that all the Windows API are reentrant).

George_George14-Apr-08 3:04

14-Apr-08 3:04

Good answer, thanks Dario!

So, I think the conclusion is there is no need to consider concurrent issue here.

regards,
George

Dario Solera14-Apr-08 3:20

Dario Solera

14-Apr-08 3:20

George_George wrote:
So, I think the conclusion is there is no need to consider concurrent issue here.

Exactly.

George_George14-Apr-08 3:24

MSAccess DB import to SQL server using C#

14-Apr-08 3:24

Cool, Dario!

Question answered.

regards,
George

new2pgrmg14-Apr-08 2:24

new2pgrmg

14-Apr-08 2:24

Hello Friends,

I need to import a

MSAccess Database to SQL server 2005 using C# code.

My question will be is it possible to do so?--I googled and am yet to find a satisfactory answer.So i thought i will post the question.

Also is it possible to import a txt file to MSAccess?

If yes can you guys give me any links please.

Thanking You all

Re: MSAccess DB import to SQL server using C#

Mark J. Miller14-Apr-08 5:05

Mark J. Miller

14-Apr-08 5:05

TXT to Acess: google search for "Access import txt"

Access to SQL Server: google search for "sql server database import wizard"

If you only need to import the access database once, there's no reason to write a program to do it. If you need to import the database on a regular basis, then all you need to do is run the import wizard once, then when the wizard prompts you to "Save SSIS" package, save it as a local file. Then you can simply setup a scheduled job to run dtexec and import the database. If you need more control than that look at the SQL Data Compare tool from RedGate software www.red-gate.com[^].

Mark's blog: developMENTALmadness.blogspot.com

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Re: MSAccess DB import to SQL server using C#

new2pgrmg14-Apr-08 18:11

new2pgrmg

14-Apr-08 18:11

Thank you Mark,I will check this.

reg invoking vb6's method in c#

Member 400849214-Apr-08 1:49

Member 4008492

14-Apr-08 1:49

Hello

Can someone help me for the below problem,

I am working on a task of accessing VB6 Application's Method in c#.Net.

I dont know how to access and use methods of VB6 in asp.net.

Thanks in advance
sri

Re: reg invoking vb6's method in c#

N a v a n e e t h14-Apr-08 1:53

N a v a n e e t h

14-Apr-08 1:53

I guess you can add a reference as COM component. But this is not recommended. You can copy the code from VB6.0 and put it in a VB.NET project, compile and use that assembly, which will be managed code.

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Re: reg invoking vb6's method in c#

Member 400849214-Apr-08 19:36

Member 4008492

14-Apr-08 19:36

Thanks for your immediate reply.
Is there any chance to use reflection to meet my requirement?
if so, Can anyone please tell me how?

Thanks in Advance
sri

Re: reg invoking vb6's method in c#

paas14-Apr-08 2:26

paas

14-Apr-08 2:26

I think you will find you can get to some of them through the various Microsoft.VisualBasic namespaces.

help on date manipulation

tasumisra14-Apr-08 0:30

tasumisra

14-Apr-08 0:30

I have three dates 1*,2*,3* ......

1* dateto = {4/9/2008 1:20:25 PM}// date time formate

range is like this

2* strdate=14-Feb-08 // string formate from datetime picker

3* enddate =14-Apr-08 // string formate from datetime picker

so now i have to check whether 1* lies between 2* and 3* or not..

can anybody suggest me what are the best ways to do...

i was trying to split the string and then compare first year then month then days

but that is going lengthy

so please help me here..

thanks in advance...

vikas da

Re: help on date manipulation

Christian Graus14-Apr-08 0:38

Christian Graus

14-Apr-08 0:38

The datetime picker returns a DateTime object, I thought. Just use the > operator to work out if your date is > the first and < the second.

Christian Graus

Please read this if you don't understand the answer I've given you

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InitializeComponent method

George_George14-Apr-08 0:05