Re: Self replication - C# Discussion Boards

Paul Conrad2-Jul-06 16:27

2-Jul-06 16:27

devfendar wrote:
Has anyone done this with C# before?

Replicate what?

Igor Sukhov2-Jul-06 17:26

Igor Sukhov

2-Jul-06 17:26

What do you mean here ?
If you're asking about creating a copy of the existing object - have a look at the IClonable interface.

Best regards,

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Igor Sukhovhttp://sukhov.net

leppie2-Jul-06 20:15

leppie

2-Jul-06 20:15

MemberwiseClone() ?

xacc.ide-0.2.0 preview - Now in 100% C# goodness

Guffa2-Jul-06 22:04

Guffa

2-Jul-06 22:04

I found a quine by Peter Gfader[^], that I of course had to improve upon... Smile | :)

using System; class MainApp { public static void Main() { char q=(char)34;string var=System.Text.Encoding.ASCII.GetString(new byte[]{115,116,114,105,110,103,32,98,61});char s=';';string a="using System; class MainApp { public static void Main() { char q=(char)34;string var=System.Text.Encoding.ASCII.GetString(new byte[]{115,116,114,105,110,103,32,98,61});char s=';';string a=";string b="Console.WriteLine(a+q+a+q+s+var+q+b+q+s+b); } }";Console.WriteLine(a+q+a+q+s+var+q+b+q+s+b); } }

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b { font-weight: normal; }

Inheriting controls from a web page(asp 1.0)

LongRange.Shooter3-Jul-06 5:14

LongRange.Shooter

3-Jul-06 5:14

public class MyClass : ICloneable
{
    public object Clone()
    {
        return (object)this;
    }
}

sishya2-Jul-06 15:53

sishya

2-Jul-06 15:53

hI,
I have a web page in which i am generating all the controls dynamically .I have a place holder(also dynamically generated)in webform1 into which i am pushing all the All the generated controls .

Now i want ato inherit this page into webform2 .What i tried was
public class Webform2 : webform1

in webform class i have a ftion

public void look()
{
// Response.Write("look");
PlaceHolder pl = new PlaceHolder();
TextBox tb;
tb = new TextBox();
tb.Text = "adarsh";
tb.Visible = true;
tb.Width = Unit.Percentage(20);
tb.Height = Unit.Percentage(20);
pl.Controls.Add(tb);
this.form1.Controls.Add(pl);

}
}

in webform2 class i call page load event i call this ftion look .But it gives a runtime exception saying in line this.form1.Controls.Add(pl); object reference not set to an instance of an object.Why is this and pls suggest any solution for this.

-- modified at 1:54 Monday 3rd July, 2006

barcode and how to use it

omar el halwagy2-Jul-06 15:18

omar el halwagy

2-Jul-06 15:18

i had barcode but please help me to use it in my project
i dont how to use it which control would help me to use it and and how how to use what it read

Paul Conrad2-Jul-06 15:42

2-Jul-06 15:42

omar el halwagy wrote:
i had barcode but please help me to use it in my project
i dont how to use it which control would help me to use it and and how how to use what it read

You had it and now you don't? Don't quite understand your question. If you're looking for a barcode control, go here[^] and hope this can help you out.

engsrini2-Jul-06 19:50

engsrini

2-Jul-06 19:50

not abl 2 understand ur question. anyway i assume that U have barcode scanner u want to read the barcode display it in some boxes. right?? for that there is no spl controls. place cursor in the textbox and scan the barcode using barcode scanner now the barcode will be displayed in textbox. if my assumption is correct the answer is correct.

omar el halwagy3-Jul-06 0:48

omar el halwagy

3-Jul-06 0:48

first thanx for help
i had the bar code scaner and want to use what it read
(take what it read in any box (textbox))want to know which control to use

How to get very continuous random numbers

Mike Dimmick3-Jul-06 2:22

Mike Dimmick

3-Jul-06 2:22

The simplest way to use a barcode scanner is as a keyboard replacement - that when a barcode is scanned, the scanner hardware or software simulate pressing the keys that correspond to the barcode data. Some just act as if they are a keyboard, some need some software (normally called a 'keyboard wedge' or 'scan wedge' or something like that) to do this. Consult the scanner's manual.

For advanced uses, there may be an API available to get input directly from the scanner, bypassing the keyboard. You might want to do this if you want to differentiate between keyed and scanned data.

To configure what sorts of barcodes the scanner will read, the scanner normally understands special programming barcodes. You can scan these to set the scanner up. You'll find these codes in the scanner's manual. Again, for advanced uses, there may well be an API for programming the scanner.

Stability. What an interesting concept. -- Chris Maunder

sergestusxx2-Jul-06 11:17

sergestusxx

2-Jul-06 11:17

I'm using a very fast loop and I'm using the Random object to get random numbers. The problem is that i'm suspecting that, as the loop is fast, numbers are not that random.

Is there a way to get to this? I've read something like locking the seed or something like that O_o

Thanx for any help.

Judah Gabriel Himango2-Jul-06 11:35

Judah Gabriel Himango

2-Jul-06 11:35

Declare your Random class instance outside of the loop:

Random random = new Random();

// Inside the loop, simply call .Next to get a new random integer:
for(int i = 0; i < count; i++)
{
    random.Next(); // this will be random now matter how many times you loop.
}

Tech, life, family, faith: Give me a visit.
I'm currently blogging about: Goof around music jam with my brothers (with video)
The apostle Paul, modernly speaking: Epistles of Paul

Judah Himango

sergestusxx2-Jul-06 11:45

sergestusxx

2-Jul-06 11:45

It is outside.

Is there any way to randomize it more?

Paul Conrad2-Jul-06 15:22

2-Jul-06 15:22

sergestusxx wrote:
Is there any way to randomize it more?

What do you mean by randomizing it more? I've tested the random class and it seems to be quite random. You can specify a seed value in the class constructor.

Back in the old days with QuickBasic, one could use the statement RANDOMIZE TIMER and this would set the seed to whatever the PC's internal timer clock was at.

Try something like this:

Random randNum = new Random(DateTime.Now.Millisecond);

Everytime you have a new instance of randNum, it should generate a different set of random numbers (unless the code happens to be initiating at the same exact millisecond 1/1000 chance Smile | :)

).

Hope this helps some,

PJC

BoneSoft2-Jul-06 16:39

BoneSoft

2-Jul-06 16:39

Problem is, it's not hard at all to have a loop hit that statement more than once per millisecond. And I've also seen some results that make me want a more random solution myself.

Try code model generation tools at BoneSoft.com.

Paul Conrad2-Jul-06 17:19

2-Jul-06 17:19

BoneSoft wrote:
it's not hard at all to have a loop hit that statement more than once per millisecond

It should be outside the loop. The original poster said outside the loop.

Another solution I thought of for the original poster was to create your own random number generator. The old Ada compiler that I have, the company had a sample random number generator program that was rather sophisticated.

Judah Gabriel Himango3-Jul-06 5:27

Judah Gabriel Himango

3-Jul-06 5:27

It should be perfectly random. Show me your code and I'll be able to better diagnose your problem.

Tech, life, family, faith: Give me a visit.
I'm currently blogging about: Goof around music jam with my brothers (with video)
The apostle Paul, modernly speaking: Epistles of Paul

Judah Himango

Guffa2-Jul-06 11:48

Guffa

2-Jul-06 11:48

The Random object produces a random number using the previous number as seed. It doesn't matter if you get the numbers an hour apart or a nanosecond apart, you will still get the same sequence of numbers.

Assuming of course that you use the same Random object, and doesn't create a new one for each random number.

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