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i was having the same problem about a year ago. so, i learned c#. it didn't take me more than 2 hours to switch to c# from vb.net
Eslam Afifi
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Yes
i'm accept, but i think c# development greater than vb.net.
and many guy use the C#> vb.net
Cheers
RRave
MCTS,MCPD
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I'm working on a method and I want to allow the user to pass in a System.StringComparer, but I also want to determine whether or not that System.StringComparer is case sensitive.
System.StringComparer has an _ignoreCase member but it's private (Microsoft! Gimme a property!)
So I was thinking of doing:
ignorecase =
(
EqualityComparer.Equals
(
System.StringComparer.CurrentCultureIgnoreCase
)
||
EqualityComparer.Equals
(
System.StringComparer.InvariantCultureIgnoreCase
)
||
EqualityComparer.Equals
(
System.StringComparer.OrdinalIgnoreCase
)
) ;
but that would need to be maintained as comparers are added and removed.
Then it occured to me that:
ignorecase = ( EqualityComparer.Compare ( "X" , "x" ) == 0 ) ;
should work, and preliminary tests confirm this.
Does anyone have a more robust method of determining whether or not a System.StringComparer is case-sensitive?
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No, none that I'm aware of.
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ignorecase = ( EqualityComparer.Compare ( "X" , "x" ) == 0 ) ;
Seems clean and effecient
only two letters away from being an asset
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I don't have a better method, but a problem with your approach is that StringComparer.CurrentCultureIgnoreCase.Equals("X", "x") does not necessarily return true in all cultures.
For example, StringComparer.CurrentCultureIgnoreCase.Equals("I", "i") is false on Turkish systems (Turkish distinguishes between dotted and dotless i[^]).
I don't know if there is any language that does something similar for "x".
Be careful with the "i" issue, case-insensitive comparisons of file extensions like ".gif" might fail on Turkish systems if you use CurrentCulture.
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I certainly didn't know that. I chose X more or less at random.
Do you know whether or not InvariantCulture does that as well?
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I am trying to sent an email to everyone in my sql database, the code selects all the email addresses to send to and then an email should be sent to all these addresses.
the problem: when i try to run this code i get the following error.
"the specified string is not a valid e-mail address."
clearly one of my addresses isn't in the correct format, the problem is that i have 2500+ clients.
How do i find out which address is invalid?
Thanks
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Fatbuddha2 wrote: How do i find out which address is invalid?
You're kidding right?
led mike
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Mike is referring to the obvious fact that your code has no error handling capability what-so-ever. Having this would making it incredibly easy to just log the offending address to a file or a TextBox or some other place to let you know which ones failed.
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yes i have tried doing this with try and catch, but i am quite new to C# and asp.net and am still working on my first project. so i'm not exactly sure of the best way of doing this.
some help would be really appreciated
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Fatbuddha2 wrote: but i am quite new to C# and asp.net and am still working on my first project
Best practice is to actually attain a novice level of expertise as a software developer BEFORE engaging in your first project. Novice level includes basic fundamental skills like knowing how to debug etc.
led mike
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well I recently did a msc in information systems, which included one module on c# prgramming and databases, at the end of the course I had to do a 3 month work placement, hence beginging my first proper project, this project continued after i finished my msc it is just in the final stages of compleation and this is the last part of the project, i have been thrown in at the deep end and had to learn alot on the job, with no expert help.
i've generally been fine with debugging, but am having trouble unterstanting exactly how the try and catch steps work.
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Fatbuddha2 wrote: but am having trouble unterstanting exactly how the try and catch steps work.
See if this helps[^]
led mike
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ok, i've read up on exception handling, and yes i see how catch woks, but i still don't see how i can find out which email is in the wrong format. so the error is caught but it could still be any of the addresses, how do i know how far the while loop has got?
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so you got an IT degree and worked for months now, but you fail to understand try-catch?
I strongly suggest you read up on exception handling and hurry applying it everywhere.
IMO it is the shortest route to creating reliable applications.
Luc Pattyn [Forum Guidelines] [My Articles]
This month's tips:
- before you ask a question here, search CodeProject, then Google;
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get;
- use PRE tags to preserve formatting when showing multi-line code snippets.
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Check each string as you load from the DB to ensure it a valid address (does not contain invalid chars and has an '@' symbol... I don't know if there are more requirements for e-mail addresses, but you can find these easily online).
Sounds like somebody's got a case of the Mondays
-Jeff
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i'm selecting all the email address in the db and using a while loop to send out the email.
i manually went through the email addresses today and they looked ok. ie @'s and .'s but know i don't know what to try and was woundering if these a way i can get the code to tell me which address is wrong
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I figured you are sending it to multiple recipients in one send. If you are sending to one recipient at a time, then do what the other responders suggested. Otherwise, you can find a regex for checking email here[^] (I did not check this, but it was the first result from google). Hope this helps,
Sounds like somebody's got a case of the Mondays
-Jeff
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I am, thanks for the help, using this idea i ran the emails in my database through regular expression validation and got back a list of the incorrectly formatted emails.
Thank you so much
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Exactlly
when u insert email address to databasem please valid with regular expression. so dont have any fear when u retrieve data from the Database to send email
this is good for u.
Cheers
RRave
MCTS,MCPD
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fellas i need my program to be MTATHREAD in my main method
but when i add the media player control in i get the following error
ActiveX control '6bf52a52-394a-11d3-b153-00c04f79faa6' cannot be instantiated because the current thread is not in a single-threaded apartment.
any body know how to get around it
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jimmy2shoes wrote: but when i add the media player control in i get the following error
ActiveX control '6bf52a52-394a-11d3-b153-00c04f79faa6' cannot be instantiated because the current thread is not in a single-threaded apartment.
Well, you don't have a choice there. You either set the STA or you don't use the Media Player control.
Why do you have to use MTA?? You can create threads yourself all you want without it...
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hi thanks for getting back to me friend
i have to MTA as i am using the Intel Mobile SDK to monitor Power and Network events and as far as there web site goes i have to use MTA in order for it to function correclty.
i have ran my program with STA and the events do not work
thanks
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