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why delegates are used in c#
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Because we can.
Because they are usefull.
Because they are function-pointers-on-steroids.
Because some things won;t work without them (or something very like them).
Google could tell you a lot more: it found this very quickly.
6 important uses of Delegates and Events[^]
In future, please do at least basic research, and not waste your time or ours.
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This is the OP's first post on CP.
« There is only one difference between a madman and me. The madman thinks he is sane. I know I am mad. » Salvador Dali
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I was fresh out of bed, and hadn't finished my first ![Java | [Coffee]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/coffee.gif) 
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Sorry, dude, but I think you are over reacting a touch. He asked a perfectly valid question, which might not be up to your high standards, but valid none the less. Just ignore the question if you feel the OP hasn't "Done Enough".
Take a look at Bill's answer to the same question, and you can see a huge difference between attitudes.
Everyone dies - but not everyone lives
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They give .NET programmers a way to create a strongly-typed template for a type-safe function pointer for uses like:
a. passing a block of executable code as a parameter to a method
b. enabling late-bound evaluation
c. they are foundation of the multi-cast Event facility in .NET
d. they enable the easy implementation of callback methods from one object to another across namespace/scope boundaries
Many people have found value in author Jesse Liberty's explanation of Delegates: [^].
« There is only one difference between a madman and me. The madman thinks he is sane. I know I am mad. » Salvador Dali
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plz help i want to make a project in c# widows form and i want to connect sqlserver2008 express data base my project is bus reservation system.
plz help me or send me project.
modified 14-Oct-14 15:11pm.
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So, design your project, and get to work implementing it in C#, and, when you have specific questions, and code examples that illustrate those specific questions, please post those questions here, or on the QA C# forum.
May I suggest you remove your personal e-mail from your message: posting it here invites spam ... as you may know the web is full of site-crawlers run by spammers looking for e-mail addresses.
« There is only one difference between a madman and me. The madman thinks he is sane. I know I am mad. » Salvador Dali
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Do you have a question?
There are only 10 types of people in the world, those who understand binary and those who don't.
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We do not do your homework: it is set for a reason. It is there so that you think about what you have been told, and try to understand it. It is also there so that your tutor can identify areas where you are weak, and focus more attention on remedial action.
Try it yourself, you may find it is not as difficult as you think!
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
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I have my system date time format set as "dd-MMM-yy" which outputs datetime as {16-Jun-08 8:30:00 AM}
i want to make sure that no matter what the datetime set on system/server datetime always shows it as MM/dd/yyyy
i googled a lot with setting culture but none is pointing towards a solution, all are offering solution to convert to string and then change the format but i don't want to change to string instead i want to change the datetime variable output to a specific format
any help is apperciated
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nitin_ion wrote: datetime always shows
Where?
I'm not questioning your powers of observation; I'm merely remarking upon the paradox of asking a masked man who he is. (V)
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whenever i try to get value from datetime it show system specific format.
this i want to change
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Still not clear, but as you posted it in C# forum...
Custom Date and Time Format Strings[^]
I'm not questioning your powers of observation; I'm merely remarking upon the paradox of asking a masked man who he is. (V)
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My system date date shows 14-oct-14 so when i use a datetime variable it also give date in the same format.
I want to change it to some other format 'en-US'.
I can do that by
DateTime.Now.ToString("MM/dd/yyyy"
) but then it is in string
I want the DateTime it self to return in the specific format and not as string.
This is because my SQL date format is different and when i want to compare dates on SQL then i get issue.
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You missed it totally - DateTime is a binary format and for that it has no human-readable presentation. When checking it's value in the debugger the environment uses the default (system) settings to present you with something readable...
If you have problem with SQL date comparison you better show us your code so we can see the exact problem...
I'm not questioning your powers of observation; I'm merely remarking upon the paradox of asking a masked man who he is. (V)
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nitin_ion wrote: I want the DateTime it self to return in the specific format and not as string
There is no such thing!
What you see on screen is ALWAYS a string representation of the data in a DateTime structure. There is NO FORMAT in a DateTime value. It is just a bunch of numbers that represents a Date/Time. The only way you get to see the value is if it is converted to some string format. That format is anything you chose.
Now, if you're looking in Visual Studio, it uses the systems culture information as a default format.
Now, if you stored your Dates in your database as a string, you SERIOUSLY screwed yourself. DateTime should ALWAYS be stored in the database as a DateTime type, NEVER as a string.
Why? Because because as a string representation, any DateTime comparisons or lookups will be done using character string rules, NOT DateTime rules. The two sets of rules are work very differently from each other.
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There is no variable that is setting the "output format"; there is a culture-setting in Windows, and that is used to format dates if you do not specify your own formatting. If you want to change the setting application-wide, then you'd best set the correct culture for your application, effectively overriding the system wide Windows-setting.
Bastard Programmer from Hell 
If you can't read my code, try converting it here[^]
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What people are telling you here is that what you "see" as datetime (in the debugger, in an application, in the database's resultset, ...) is just a representation of the datatype "datetime". Just as 10 is a representation of an integer and "10" is the string representation of the integer 10. Both the string and the integer value have a different "machine value" which is a bunch of 1's and 0's. Same goes for your datetime object. What you see is a representation of the object value which you can change as you wish.
Hope this clarifies things for you.
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Hello,
I started to use VS 2013 profiler for the first time today.
Excellent tool at first sight.
But I get into a first issue while monitoring a XNA game.
I m trying to figure which mehod is causing the game to lag.
The profiler "functions tree" feature is apparently only doing a partial job.
It only displays a tree with 6 levels of called functions and claims that the 6th level function is at bottom of stack.
This is definitely not the case and this function does call some more methods.
Why does the profiler not show all of the called functions after the 6h level?
I looked for a parameter into the performance explorer properties. The only parameter that could be relevent was "display small functions". Enabling it did not help.
Any idea?
Thx in advance.
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How possible to find source code of basic classes and methods to
override some methods, for instance override listbox methods (Items.Add)
to make some items other color?
Same as it is in Delphi, when you do ctrl+click and move to source code of pascal.
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Don't post the same question in two places - all you will do is duplicate work and annoy people. Pick either the C# forum or the Q&A and stick with it.
Annoyed people are less likely to be helpful than happy ones...
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
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That's the same link I sent him in QA! 
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
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Great minds and all that.
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