Re: Static variable in a .NET class library - .NET (Core and Framework) Discussion Boards

mrinmayeek9-May-05 7:00

9-May-05 7:00

Hi,

I am just starting with .NET programming and am trying to figure out the implementation of Data Access block provided by the Microsoft Enterprise Library. How does one provide connection string and access the database using the Library?

Thanks
Minu

Re: Enterprise Library Data Access Block

Scott Serl9-May-05 16:18

Scott Serl

9-May-05 16:18

There is a configuration program installed with the library. Run the configuration program and configure the application blocks you are going to use in your program. It creates entries in the app.config or web.config, and adds another config file for your application. You put both of these files in your project. Thats it.

Static variable in a .NET class library

giplet9-May-05 2:54

giplet

9-May-05 2:54

Hi!

If I have a static variable in a class in a class library, will it be shared among all programs that use the same class library on the same computer, or will every program have it's own?

public class x
{
public static int y = 0;
}

BR
Christian

Re: Static variable in a .NET class library

Dave Kreskowiak9-May-05 4:48

Dave Kreskowiak

9-May-05 4:48

Every instance of the class will have it's own value.

What are you trying to do?

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: Static variable in a .NET class library

Colin Angus Mackay9-May-05 6:12

Colin Angus Mackay

9-May-05 6:12

Dave Kreskowiak wrote:
Every instance of the class

Don't you mean application? It was a static variable after all. Wink | ;)

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Re: Static variable in a .NET class library

Dave Kreskowiak9-May-05 8:51

Dave Kreskowiak

9-May-05 8:51

Oops! Hadn't had my Coke yet!

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: Static variable in a .NET class library

S. Senthil Kumar9-May-05 5:29

S. Senthil Kumar

9-May-05 5:29

Static variables are static within their appdomains. So two appdomains within the same process can have two different values.

Regards
Senthil
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Re: Static variable in a .NET class library

trolik9-May-05 8:38

trolik

9-May-05 8:38

It is true, but there is a way to modify such behavior.
If you mark your variable with ThreadStaticAttribute then this variable will be unique for thread.

Best regards
Sergey

Re: Static variable in a .NET class library

nyjetswin200512-May-05 12:27

nyjetswin2005

12-May-05 12:27

Every program that is running on your computer has its own Process. The operating system creates the process which your program will run. Each process has its own stack and heap and depending on how many threads you are running, and the operating system every thread in your program will have its own stack. This is true no matter what DLLs are being used by your program. DLLs or shared libraries do not have their own stack or heap.

Send Object Through Network

aRtsZ8-May-05 10:29

aRtsZ

8-May-05 10:29

Does anyone know how to send an object through TCP Socket?
Or how can I convert an object to a byte array in .NET Compact Framework?
Thanks a lot!!!

Re: Send Object Through Network

Tad McClellan8-May-05 14:19

Tad McClellan

8-May-05 14:19

Try .Net Remoting (look it up on msdn and there are lots of books). The object must be serilizable first so don't try to move a datatable or a hashtable.

Re: Send Object Through Network

aRtsZ9-May-05 0:28

aRtsZ

9-May-05 0:28

But if I am using .NET Compact Framework, how can I do so? It is because there is no .NET remoting in .NET Compact Framework. Thanks a lot for your reply

Re: Send Object Through Network

S. Senthil Kumar9-May-05 5:34

S. Senthil Kumar

9-May-05 5:34

You can use binary serialization to write the object out as a binary stream and reconstruct it at the other end.

private void Serialize(NetworkStream stream, object obj)
{
   BinaryFormatter formatter = new BinaryFormatter();
   formatter.Serialize(stream, obj);
}

private object Deserialize(NetworkStream stream)
{
   BinaryFormatter formatter = new BinaryFormatter();
   return (YourTypeHere) formatter.Deserialize(stream);
}

Regards
Senthil
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Re: Send Object Through Network

aRtsZ9-May-05 6:15

aRtsZ

9-May-05 6:15

thanks so much. But there is no binary serializable class in .NET compact framework, it only available in .NET framework.
anyway, really thanks a lot!

Re: Send Object Through Network

S. Senthil Kumar10-May-05 1:28

S. Senthil Kumar

10-May-05 1:28

How about using System.Xml.Serialization.XmlSerializer to serialize and deserialize data? Is that available in CF?

Regards
Senthil
_____________________________
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Re: Send Object Through Network

aRtsZ10-May-05 7:10

aRtsZ

10-May-05 7:10

it is not available too. But I found from some books that seems it is related to what you suggested, the Xml Web service.
Really thanks so much!!

IPhlpAPI : SetTcpEntry

Vitoto7-May-05 18:47

Vitoto

7-May-05 18:47

Hi i using this Sample for VB.Net

http://www.freevbcode.com/AuthorInfo.asp?AuthorID=6163

I need update for Close Connections.

API is : SetTcpEntry

Declare Function SetTcpEntry Lib "IPhlpAPI" (ByRef pTcpRow As MIB_TCPROW) As Integer

Inside Command1_Click and area With TcpTableRow, inserting this code for test :

If CStr(GetTcpPortNumber(.dwRemotePort)) = "1452" Then
MsgBox("Found")
.dwState = 12
SetTcpEntry(TcpTableRow) --> BreakPoint
End If

1452 is remote port the my Laptop connected to Game Server in my PC.
I looking using Netstat -n

This Stop in BreakPoint but not Close Connection.

ny idea or Sample Code working ?

Embeded Executable Resource

zx2c46-May-05 15:17

zx2c4

6-May-05 15:17

Any idea how to embed an exectuable inside another executable, and then from with in your program, call the embeded exectuable with out creating another process or wrting the embed exectuable to disk?

I have a C++ program (straight C++, not managed). It has some logic and then depending on a number of conditions, ShellExecute()s another exectble file (client.exe), which happens to be a .net file. Is there anyway that I can add this client.exe file as a resource of my C++ program, and then call the beginning of the code from within the C++ program, so I wouldn't have to extract the resource or create a new process

Please help

Thanks,
Jason A. Donenfeld

PS: This is what I have now:

<br />
#define WIN32_LEAN_AND_MEAN<br />
#include<br />
#include<br />
#include<br />
<br />
#define INSTANCEMESSAGE "ShowZIM"<br />
#define WINDOW_TITLE "ZX2C4InstantMessenger"<br />
#define MUTEX_STRING "Local\\ZX2C4IM"<br />
#define FILE "client.exe"<br />
<br />
int APIENTRY _tWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow)<br />
{<br />
if(_tcscmp(lpCmdLine,"clone"))<br />
{<br />
CreateMutex(NULL,TRUE,MUTEX_STRING);<br />
if(GetLastError()==ERROR_ALREADY_EXISTS)<br />
{<br />
SendMessage(FindWindow(NULL, WINDOW_TITLE), RegisterWindowMessage(INSTANCEMESSAGE), NULL, NULL);<br />
return 0;<br />
}<br />
}<br />
ShellExecute(NULL,NULL,FILE,lpCmdLine,NULL,SW_SHOW);<br />
return 0;<br />
}<br />

Re: Embeded Executable Resource

Dave Kreskowiak7-May-05 4:56

Dave Kreskowiak

7-May-05 4:56

As far as I know, you can't do that. I don't know of any Execute method that will load a file from memory.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: Embeded Executable Resource

Colin Angus Mackay7-May-05 10:36

Colin Angus Mackay

7-May-05 10:36

There is, however, a way to load an assembly from an embedded resource - although I don't this is what the OP had in mind. You can embed an assembly into another, then extract the assembly at runtime into a byte array then pass that to the AppDomain.Load() method.

See: MSDN: AppDomain.Load(byte[])[^]

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Re: Embeded Executable Resource

Dave Kreskowiak9-May-05 1:02

Dave Kreskowiak

9-May-05 1:02

I figured there might have been a round-about way to do this. I think your right though, there's no way I'd go through this kind of trouble just to embedded an .EXE.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: Embeded Executable Resource

Colin Angus Mackay9-May-05 1:07

Colin Angus Mackay

9-May-05 1:07

Dave Kreskowiak wrote:
there's no way I'd go through this kind of trouble just to embedded an .EXE.

Me neither - I'd just add the EXE or DLL to the install package and be done with it.

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.NET Framework Versions

NRayman6-May-05 11:57

NRayman

6-May-05 11:57

At one time I had 1.1 and VS.NET Eterprise architect 2003.
Due to lisencing issues I had to take 2003 off and Insatall VS.NET Eterprise architect 2002. Along with that also came Framework 1.0

Now I am stuck with 1.0 (I still have 1.1 on my box). Is there a way I can switch from 1.0 to 1.1 with out disturbing my VS.NET installation or messing up my box.

Thanks.

Re: .NET Framework Versions

Dave Kreskowiak6-May-05 12:32

Dave Kreskowiak

6-May-05 12:32

No. VS.NET 2002 will only target the .NET Framework 1.0. It won't compile against 1.1.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Remote exe

NRayman6-May-05 9:53

NRayman

6-May-05 9:53

I have a EXE for my vb.net project. I want to keep this on a server and put shorcut on client machines to launch this.
Any information regarding issues,problems, requirements will be help ful.

Thanks

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