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How to read the large data(containig 2000 records) from binary file please anyone help me with code.
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You are first going to have to find out the format of the binary file. We don't know this so can't really help beyond the basics of how to open a file for reading.
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I think u can get it by dynamic creation of controls. First take a Panel in that u can add the controls one by one applying the height and width. By using LinkLabel control u can do redirection from one form to another. Definitely u can do in this way.
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how to make text box empty while click in it (if some text is already written in text box while page loads)please help
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textbox1.text = string.empty;
Or don't put a value in while in design mode.
Bob
Ashfield Consultants Ltd
Proud to be a 2009 Code Project MVP
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'while page loads' makes me think this is a lost ASP.NET question ?
Christian Graus
Driven to the arms of OSX by Vista.
"I am new to programming world. I have been learning c# for about past four weeks. I am quite acquainted with the fundamentals of c#. Now I have to work on a project which converts given flat files to XML using the XML serialization method" - SK64 ( but the forums have stuff like this posted every day )
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in a on mouse entry event ( or what ever the correct event I can't remember from top off my head) call the code above.
textbox1.text = "";
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I just had a look and think they actually probably want to use enter. Hover is if it goes over, enter when they use the control
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maybe just like this
private void textBox1_Enter(object sender, EventArgs e)
{
textBox1.Text = String.Empty;
}
welcome to www.ideaext.com
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Hi all,
I had an application on vs2003 in c#.net.
the execution/processing speed is kind of slow.
Suppose there are methods as
dtStart = Now;//date time obj
MethodA();
.
.
MethodG();
dtEnd = Now;//date time obj
I use datetime class to find out the elapsed time as
elapsed = dtEnd - dtStart;
elapsed time is approx 2.81 sec. or always above 2.5 secs.
Is this is slow?
What these methods are doing is operating upon some string,bool,array datatypes.
mostly string manipulation.
One Big string and then extracting other string obj from this !!
but most string,bool, etc data types are local to methods, and i guess they got out of scope(eligible for garbage collection) after method lost focus.
a)How can i speed up execution?
b)Is there a way to find out which method is taking most time or culprit method/object/operation?
regards
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Hum Dum wrote: a)How can i speed up execution?
Rewrite your code to be more efficient
Hum Dum wrote: b)Is there a way to find out which method is taking most time or culprit method/object/operation?
Yes, several methods including profiling.
Bob
Ashfield Consultants Ltd
Proud to be a 2009 Code Project MVP
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Ashfield wrote: Bob
Ashfield Consultants Ltd
your reply is really like Consultants !!
so near but yet so far 
I know i have to rewrite that's why i asked?
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Well, without seeing the code how can anyone advise you on whats wrong? I can make several guesses, but its pointless.
Bob
Ashfield Consultants Ltd
Proud to be a 2009 Code Project MVP
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Hum Dum wrote: a)How can i speed up execution?
Start with b, so that you know which part of the code that needs optimising.
Hum Dum wrote: b)Is there a way to find out which method is taking most time or culprit method/object/operation?
The most basic would be to get the execution time for each method to see where the most time is used. You can use the StopWatch class to get better resolution than DateTime.Now offers.
Despite everything, the person most likely to be fooling you next is yourself.
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thanks for your reply.
Guffa wrote: The most basic would be to get the execution time for each method to see where the most time is used
There i am calling approx. 12-15 methods call in total, embedded inside one method,
so, for each method "Do i have to do this?"
Or is there any vs tool which helps me in finding out time taken by methods?
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Hum Dum wrote: Is this is slow?
[...]
mostly string manipulation.
Research the StringBuilder and read up on Regular Expressions 
I are troll
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Eddy Vluggen wrote: Research the StringBuilder and read up on Regular Expressions Smile
I already done that, It says this is only useful if you are performing operation on single string like appending, manipulating the same one.
But here, what i am doing is extracting many small string from ONE main string, also passing this Main string to different method. and on these small strings i don't perform any operation and yes i am using regular expression for extracting peculiar strings
Any other help/comment on my this way would be appreciated.
Or any other light
regards
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insert Console.WriteLine(DateTime.Now.ToString("HH:mm:ss.fff")+": some text"); at several locations in your code, that will immediately tell you where most time is spent.
Regexes are anywhere from very slow to slow; optimize them, and/or throw them out and write proper search and replace code yourself.
Whatever you do, don't show us your code; someone might spot the problem at once.
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Luc Pattyn wrote: Whatever you do, don't show us your code; someone might spot the problem at once.
Aah !! that i will never do
Well after putting up several DateTime.Now i found the real culprit, and to utter most surprise its not string function which i had wrote  .
Its turns out to be display notification(as in Messengers there comes a pop up window at bottom right corner, not written by me  ). Its consuming 2.5 sec out of 2.7 sec.
So, if you plz help me with this!!
Can we show this notification parallel, and move on to later execution.
not waiting until it ends up !!
How should i do this, any help/link would be appreciated.
But still curious, Is this approx .2 sec(subtracting time taken by notification) also slow??
your opinion?
regards.
modified on Tuesday, April 28, 2009 3:33 AM
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Hum Dum wrote: pop up window ... consuming 2.5 sec
Then find or create a better popup. I trust it is not consuming 2.5 sec, instead the animation lasts that long, and nothing else happens in between because it isn't based on a timer nor a thread (so just a bunch of Thread.Sleep calls).
Hum Dum wrote: Is this approx .2 sec also slow??
Throw out the slow animation, look at the timestamps, and decide for yourself.
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Hi,
I could write a book on software performance, it is a huge topic.
You haven't told hardly anything about your app, and haven't shown any code, so how could anyone judge its performance?
From experience, in 0.2 sec one can do any of the following:
- copy 100MB of data (RAM to RAM)
- read 10MB of disk data
- calculate 10 million prime numbers
does your program come close to any of those? if not, you probably are wasting time/cycles/...
guidelines:
- make it work correctly first (without using silly algorithms, silly coding); then optimize
- choose your algorithms carefully
- choose your data structures carefully
- don't use polling
- measure the results accurately
- consider and compare alternatives
- consider caching
- ... the list goes on
- as always, there occasionally may be a valid reason for not obeying some of the guidelines
Hum Dum wrote: so that no one can post my code here on coding horror forum
that is a dumb reason.
if there were a "stupid questions" forum, would you stop asking questions?
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