Writing a Funtion in C#|VB.NET and using it in Crystal Report - C# Discussion Boards

amit_for_net11-Mar-06 0:33

11-Mar-06 0:33

How can I create a login window which will not be closable as well as which will not loose focus, so that the system couldn’t be accessed without signing in.just like cyber cafe softwares I am using c# .net
Thank You

Re: Login window for cyber cafe SW

da vinci coder11-Mar-06 1:49

da vinci coder

11-Mar-06 1:49

first of all if u dont want to loose focus u have to call
the form as a "Dialog"..

for e.g.:

form myForm = new form()
myForm.ShowDialog();

then: if u want to disable close 'X' button.. put the following
code inside the class form{}

<br />
		#region disable exit button<br />
		protected override CreateParams CreateParams<br />
		{<br />
			get<br />
			{<br />
				CreateParams cp = base.CreateParams;<br />
				const int CS_DBLCLKS = 0x8;<br />
				const int CS_NOCLOSE = 0x200;<br />
				cp.ClassStyle=CS_DBLCLKS | CS_NOCLOSE;<br />
				return cp;<br />
			}<br />
		}<br />
		#endregion<br />
<br />

hope this helps..

good coding..

Letting users write methods

dennizsoftware.se10-Mar-06 21:12

dennizsoftware.se

10-Mar-06 21:12

Hi,

I'm developing an application that generates a purchase order in our business system based upon selling statistics for a supplier.
The problem is that I need to make the program more dynamic, I need to integrate an easy way for users to change the calculation methods without having to open my source.
I was thinking that they could write 3 script files: method1.cs, method2.cs and method3.cs that overrides 3 empty methods in my program but as far as I can see VSA doesn't support overriding methods in script. (or at least I couldn't)

Is there any other smart and easy way to build this? I just want the user to be able to replace 3 methods in my application without having to recompile.

Very greatfull if someone can help me!

Best regards
Dennis

Re: Letting users write methods

Steve Pullan11-Mar-06 0:25

Steve Pullan

11-Mar-06 0:25

Dennis, this sounds a bit dangerous to me. Are the calculations being changed during development or are they going to be dynamic during the operational life of the program?

If the former, just put up with recompiling. If the latter then I suggest redesigning your app to provide more control over the calculations via a form for that purpose. Allow that form some latitude with the parameters and functions available to the users but don't let them have carte blanche with your code.

...Steve

1. quod erat demonstrandum
2. "Give a man a fish and you've fed him for a day. Teach him how to fish and you've fed him for life." I read that somewhere once Smile | :)

(Translation: I'll show you the way, but not write the code for you.)

Re: Letting users write methods

dennizsoftware.se11-Mar-06 2:16

dennizsoftware.se

11-Mar-06 2:16

Thanks for answering Steve.

The calculations should be dynamic. I was thinking that maybe there was a way to call a method in a script file from my program instead of the opposite. I don't wan't to expose my classes to the users.

The only way I found was by using the PaxScript.NET (www.paxscript.net) since they provide the method Invoke which calls a method in a script file with parameters and sends me back the result.

I'm on a tight budget, so I can't afford this.

/Dennis

Re: Letting users write methods

dennizsoftware.se11-Mar-06 6:38

dennizsoftware.se

11-Mar-06 6:38

Found the solution.

http://www.gamedev.net/community/forums/topic.asp?topic_id=377032[^]

/Dennis

Security problem in .net remoting

xys10-Mar-06 17:32

xys

10-Mar-06 17:32

I built a simple .net remoting program, including a server and a client.
The server has a server-activated object called "JobServerImpl", and a public event "JobEvent".
I add two event handlers at the client side, with codes like this:

this.jobServer = GetJobServer();

try
{
jobServer.JobEvent += new JobEventHandler( this.MyJobEventHandler );
}
catch( SecurityException e )
{
MessageBox.Show( e.Message );
}

The server started successfully, but when the client was loaded, a messagebox show with info "type of System.DelegateSerializationHodler and the derived types( ofSystem.DelegateSerializationHoder, for example) are not allowed to be deserialized at this security level".

I've no idea about this exception. Why? Thanks. Confused | :confused:

Writing a Funtion in C#|VB.NET and using it in Crystal Report

superdragon10-Mar-06 16:21

superdragon

10-Mar-06 16:21

I have written a Function in C#, now i want to compile it and in crytal report i use it. Have any way to do that? If have, how to do it? help me! Thanks a lot!

superdragon

detect runtime process

azusakt10-Mar-06 16:04

azusakt

10-Mar-06 16:04

Dear All,

I have to execute a java application from C-sharp, but I want to know, how can I detect whether the process is complete or not?

System.Diagnostics.Process.Start("/MySetup.jar", "untitled.xml");

the code I used as above. and I will have to do another function after the MySetup.jar is ended. Can anyone give me some hints? Thanks

Re: detect runtime process

Stefan Troschuetz10-Mar-06 21:36

Stefan Troschuetz

10-Mar-06 21:36

Process process = Process.Start("/MySetup.jar", "untitled.xml");
process.WaitForExit();
anotherFunction();

www.troschuetz.de

Re: detect runtime process

azusakt12-Mar-06 14:37

azusakt

12-Mar-06 14:37

Thanks so much stefan.

Just have another question, do I need to call dispose or close after the process ended?
e.g process.dispose(), process.Close();

And, it looks difficult to lock the original application after running this process. Because I don't want to let user do anything after popup this process.

how to send message from client to another client through the server

sa_keles10-Mar-06 15:52

sa_keles

10-Mar-06 15:52

hi all,
i am trying to make a chat program, when a client send a message it will first send the message to the server then server will send to target machine , i have found examples but all of them sending message just between server and client is there anybody who has source code ore article about messaging between clients through the server?
shoul i send target ip with the message which i send to server ? i mean i will send message+targetip to server in a socket and server will open the socket and get the target ip address after then server will create new socket and send to target machine i am so confused
thanks to everyone who send message and not

Re: how to send message from client to another client through the server

Divyang Mithaiwala10-Mar-06 17:44

Divyang Mithaiwala

10-Mar-06 17:44

Hello sa_keles,

Do not confused. it is not a difficult subject. you just create one structure that define as like this.

struct msgPkt
{
char[] sender = new char[10];
char[] recerver = new char[10];
char[] msg = new char[100];
}

when any one login it will register there current IP address so no to give every time IP with every msgs. just give sender & reciever names.

Here i specified all field as char array becoz in network operation it is better that bytes of all field are fix & known size.

And if you use UDP insted of TCP then it is best for this.

Divyang Mithaiwala
System Engineer & Software Developer

Re: how to send message from client to another client through the server

sa_keles11-Mar-06 0:16

sa_keles

11-Mar-06 0:16

thanks for your reply Divyang Mithaiwala ,
i know nothing about socket programming so i am confused Frown | :(

but i am searching i will try your said is there any article about socket programming you advise me? i hope i can manage Smile | :)

have a nice day

Re: how to send message from client to another client through the server

Divyang Mithaiwala12-Mar-06 17:02

Divyang Mithaiwala

12-Mar-06 17:02

You just try for this

http://www.codeproject.com/csharp/testingsocketservers.asp
http://www.codeproject.com/csharp/socketsincsharp.asp

Divyang Mithaiwala
System Engineer & Software Developer

Re: how to send message from client to another client through the server

sa_keles11-Mar-06 15:33

sa_keles

11-Mar-06 15:33

hi again ,
i am trying to use struct but getting error could you write me an example please , i have never used struct before

openup your heart and let the sun shine in Smile | :)

Re: how to send message from client to another client through the server

sa_keles11-Mar-06 16:45

sa_keles

11-Mar-06 16:45

i have resolved the problem

openup your heart and let the sun shine in Smile | :)

How to display only numbers after comma in c#

mm31010-Mar-06 14:28

mm310

10-Mar-06 14:28

i need print only numbers after comma

example

double x=33.452

Console.WriteLine(x);

output

452

how I do this ?

Re: How to display only numbers after comma in c#

Sean8910-Mar-06 15:21

Sean89

10-Mar-06 15:21

Heres a simple way:

static void Main(string[] args)
{
    double x = 33.452;
    string number = x.ToString();
    char[] sperator = { '.' };
    string[] seperate = number.Split(sperator);
    double xSplit = Convert.ToDouble(seperate[1]);
    Console.WriteLine(xSplit);
}

That will output 452 to the console. There might be an easier way though I'm not sure.

Hope that helps Poke tongue | ;-P

Re: How to display only numbers after comma in c#

prrusa10-Mar-06 15:35

prrusa

10-Mar-06 15:35

I like your's with the colored
background better... Smile | :)

Re: How to display only numbers after comma in c#

prrusa10-Mar-06 15:29

prrusa

10-Mar-06 15:29

Probably and eaiser way...But
this works.

double d = 3.14;
string s = d.ToString();
char[] delimiter = { '.' };
string[] a = s.Split(delimiter);
Console.WriteLine(a[1]);

gl-Paul

Re: How to display only numbers after comma in c#

Sean8910-Mar-06 15:33

Sean89

10-Mar-06 15:33

I put the exact same thing 8 min eariler Confused | :confused:

Re: How to display only numbers after comma in c#

prrusa10-Mar-06 15:37

prrusa

10-Mar-06 15:37