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You can change your question after posting it, if you think you didn't make yourself clear the first time... No need to create a new question everytime.
Here's an article about a Diff engine you could use:
http://www.codeproject.com/cs/algorithms/diffengine.asp[^]
Regards,
mav
--
Black holes are the places where God divided by 0...
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Hi all,
I want to download a file for every one minute from ftp server to client in .net(c#).
I got all the remaining code to download the file but could not find the method to include this timespan.
Please suggest me at the earliest.
Priya
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You will need a Timer control for this. There are lots of examples on Google.
Cheers,
विक्रम
Be yourself, no matter what they say.
- Sting, Englishman in New York.
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It worked.
Thanks and Regards,
Priya
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i have to compare a word document which has been edited with the original ie., document before editing. how do i do this in c#.
Nitin Raj Bidkikar
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Hi All
I am using crystal Report in C# 2005 asp.net
I want to export the crystal report to image (like Jpeg,Gif)
Any one please help me
it is very urgent ![Rose | [Rose]](https://codeproject.freetls.fastly.net/script/Forums/Images/rose.gif)
Sakti
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I have an application in C# which should be installed on 10 machines.. I would like a way to make sure that they do not install on more than that. I would like to give them a way to activate each terminal. Since all terminals will be sharing a DataBase ,maybe we can have a verification process that asks them to input an activation code.Can any one help me regarding this?
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If you don't mind spending the money you can use www.copyminder.com but if I were you I would request the names of the 10 computers and their IP Addresses that the application will be running on this way you can check if a computer is one of these 10 and if so allow the application to run otherwise not.
I know it's messy and probably not the best idea, but it will work.
Freedom is the right to say that 2+2=5 if this is so everything else will follow.
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Hi,
Which one gives better performance, checking a string against null & empty.
string s = "something";
for(int i=0; i<100; i++) {
if(s != null) {
if(s.Length > 0) {
}
}
}
or
for(int i=0; i<100; i++) {
if(!String.IsNullOrEmpty(s)) {
}
}
plz help,
nas
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put it in a loop that will run a few hundred thousand times and use the System.Diagnostics.StopWatch[^].
It's a good idea to get used to testing things like this yourself ... it's quicker than asking on here, more reliable and you have more chance of getting an answer with some of the more obscure stuff (not that IsNullOrEmpty is obsucre).
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But he doesn't want to do any of the work himself. He needs someone to do his homework form him.
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Or use Reflector to check what String.isNullOrEmpty does:
public static bool IsNullOrEmpty(string value)
{
if (value != null)
{
return (value.Length == 0);
}
return true;
}
IsNullOrEmpty is therefore just a bit slower because there is a strack frame more present (for calling the method). But compared to the time you are using in writing that every time, I'd use IsNullOrEmpty 
-^-^-^-^-^-
no risk no funk ................... please vote ------>
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Seriously, for the additional fractions of a microsecond that IsNullOrEmpty takes I wouldn't worry about it.
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Won't .Length check for null again anyway? If so, you're checking for null twice.
I'd just use IsNullOrEmpty figuring Microsoft wouldn't steer me wrong. 
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PIEBALDconsult wrote: Won't .Length check for null again anyway? If so, you're checking for null twice.
.Length cannot operate on null so it will throw an exception.
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::Smacking forehead with heel of hand::
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i know the meaning of sealed classes.My Question is when should i use the sealed classes.
Sonia Gupta
Soniagupta1@yahoo.co.in
Yahoo messengerId-soniagupta1
Love is Friendship and Friendship is Love....
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Well the meaning of it shows when it should be used ... it stops anyone inheriting your class, so it should be used when you don't want someone to inherit your class :P
Two examples of this in the Base Class Libraries are the List and String Builder. These 2 are sealed as they are "high performance" classes which microsoft don't want anyone inheriting and then messing around with the internals and messing them up (well thats the official line anyway).
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I KNOW IT SHOULD BE USED TO DEPRIVE OF SOME INHERITING MY CLASSES.
BUT ONE CAN ACCESS THE MEMBER FUNCTIONS AND MEMBER VARIABLES BY INSTANTIATING THE CLASS.
Sonia Gupta
Soniagupta1@yahoo.co.in
Yahoo messengerId-soniagupta1
Love is Friendship and Friendship is Love....
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Sure, you can access the members of a sealed class. sealed is not an access modifier like private, protected, public, internal, protected internal.
-^-^-^-^-^-
no risk no funk ................... please vote ------>
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Please - no shouting. Your keyboard has both upper and lower case.
Deja View - the feeling that you've seen this post before.
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Yes. And your point was?
Sealed doesn't mean it can't be instantiated - that's what abstract means. It just means that it can't be inherited.
Deja View - the feeling that you've seen this post before.
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Hardly ever; it's rude. I very much dislike running up against sealed classes and having to find a less-elegant solution than inheritance.
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PIEBALDconsult wrote: I very much dislike running up against sealed classes and having to find a less-elegant solution than inheritance.
I agree on this point, but there are also cases where sealed classes are useful. The most common use are for performance sensitive classes, utility helper classes (which can now use the static keyword, which also makes them sealed), and value types (all enums are sealed).
With the upcoming .NET 3.5 release, not being able to inherit a sealed class becomes less of an issue due to extension methods.
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