Re: OT - C# Discussion Boards

Re: Problems with C# Examples

Guffa11-Mar-08 10:51

Guffa

11-Mar-08 10:51

Jammer wrote:
I'm still very much getting my head around how to scope things in C#. I'm SO used to FoxPro

Then you have a lot more than just scope to get your head around... Wink | ;)

Despite everything, the person most likely to be fooling you next is yourself.

Re: Problems with C# Examples

Jammer11-Mar-08 10:04

Jammer

11-Mar-08 10:04

Hi Again,

All i'm doing is:

private static List<string> GetMachinesDirectoryList()
{
    List<string> DirectoryList = new List<string>();

    string[] drives = Directory.GetLogicalDrives();

    //String[] drives = Environment.GetLogicalDrives();


    return DirectoryList;
}</string></string></string>

Yet neither line works for me ... If I add a watch I just get an out of context error. All the examples out there I can find do *exactly* the same thing string[] drives = Directory.GetLogicalDrives(); so how come this doesn't work in my code?

Cheers,

Jammer

Going where everyone here has gone before! Smile | :)

Re: Problems with C# Examples

Scott Dorman11-Mar-08 10:28

Scott Dorman

11-Mar-08 10:28

Are you getting a compiler error or a runtime error? The method should look like this:

private static List GetMachinesDirectoryList()
{
   string[] drives = Directory.GetLogicalDrives();
   //String[] drives = Environment.GetLogicalDrives();
   return new List<string>(drives);
}

Scott.

—In just two days, tomorrow will be yesterday.
—Hey, hey, hey. Don't be mean. We don't have to be mean because, remember, no matter where you go, there you are. - Buckaroo Banzai

[Forum Guidelines] [Articles] [Blog]

Re: Problems with C# Examples

Jammer11-Mar-08 10:30

Jammer

11-Mar-08 10:30

using it in a private didn't work for me .. its working now that its in a public method.

weird.

Jammer

Going where everyone here has gone before! Smile | :)

Re: Problems with C# Examples

Christian Graus11-Mar-08 10:39

Christian Graus

11-Mar-08 10:39

System.IO.Directory.GetLogicalDrives(), I believe. Your problem is probably that the example assumes a using statement.

Christian Graus - Microsoft MVP - C++

"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )

Pete O'Hanlon11-Mar-08 12:08

Pete O'Hanlon

11-Mar-08 12:08

Did you get that issue with the BitmapSource sorted out?

Deja View - the feeling that you've seen this post before.

My blog | My articles

Re: OT

Jammer11-Mar-08 13:09

Jammer

11-Mar-08 13:09

I Pete,

I can't remember that particular issue! Wink | ;)

There have been so many lately they are all blurring into one mass of "eh?" heh heh ...

Jammer

Going where everyone here has gone before! Smile | :)

Re: OT

Luc Pattyn11-Mar-08 15:13

Luc Pattyn

11-Mar-08 15:13

Hi,

if you feel you are running from one problem to the next, and not gaining much
insight in the process, I strongly recommend you go to a book store, look into
some introductory or tutorial programming books, and choose and buy and study one,
chapter by chapter. That will teach you the basics in a logical order, provide
examples and show the right way to do things.

I am not going to recommend a specific book, since I believe it very much depends
on your programming knowledge in general and the writing style you prefer.
I do like most Microsoft books so far.

Smile | :)

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.

Re: OT

Jammer11-Mar-08 15:26

Jammer

11-Mar-08 15:26

Sound advice. I think I'm picking up a lot of stuff fairly quickly. A lot of the time it also comes down to confidence. I have too often already quickly based a mail out on codeproject only to fix the problem seconds later.

I'm currently reading up on WPF and XAML/Blend/Expression as that is what I'm working with at the day job at the moment.

I think I'm doing okish. I've got to the point with my app in 1 month that took 6 months in FoxPro.

Code Project has been incredibly helpful.

Jammer

Going where everyone here has gone before! Smile | :)

Re: OT

Luc Pattyn11-Mar-08 16:14

Luc Pattyn

11-Mar-08 16:14

Jammer wrote:
Code Project has been incredibly helpful

Yes, it is a great community, and most threads converge to useful info.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

Re: OT

Pete O'Hanlon11-Mar-08 23:19

Pete O'Hanlon

11-Mar-08 23:19

Jammer - sorry about that. My OT was actually aimed at Christian, but there are good points between you and Luc.

Deja View - the feeling that you've seen this post before.

My blog | My articles

Re: OT

Jammer12-Mar-08 8:57

Jammer

12-Mar-08 8:57

Gotcha! I was racking my addled brain trying to think of what you might be referring too with that one.

haha ... there have been so very many issues!

Regards,

Jammer

Going where everyone here has gone before! Smile | :)

Macros

ellllllllie11-Mar-08 9:18

ellllllllie

11-Mar-08 9:18

I have a method that convert a number to a letters created with c#.net.
if i wanna use this methodin excel so when someone insert a number in a cells in excel i wanna to load directly the letters corresponding to this number in the other cell.
Some one tell me to use the macros.
But i don't know how to use them. is there any help?????
best regards

dghdfghdfghdfghdgh

Re: Macros

Christian Graus11-Mar-08 9:27

Christian Graus

11-Mar-08 9:27

Not a C# question, unless C# runs inside Excel now ? I think VBScript is what runs inside Office apps.

Re: Macros

Guffa11-Mar-08 10:31

Guffa

11-Mar-08 10:31

Christian Graus wrote:
I think VBScript is what runs inside Office apps.

Nope. VBA. Smile | :)

Despite everything, the person most likely to be fooling you next is yourself.

Re: Macros

Christian Graus11-Mar-08 10:56

Christian Graus

11-Mar-08 10:56

Potayto - potahto :P

setting win app mail

shawn41411-Mar-08 8:32

shawn414

11-Mar-08 8:32

Hello you. My name is saIam, am working on a window application on C#, the application is to get records of orders from a sales point and package the orders for the day after closure, then send as an email to the manager who works in a seperate office or might even be out of town just to enable him keep track of the daily sales at various stores. i have modelled the application but could not get the mailing aspect right just couldnt the config right .please need help on setting and configuring mail in window application with c#. Many thanks in anticipation.

stay jacking

Re: setting win app mail

Christian Graus11-Mar-08 8:54

Christian Graus

11-Mar-08 8:54

What do you mean by 'config' ? You're failing to set a proper SMTP server ?

Re: setting win app mail

Ravenet11-Mar-08 17:31

Ravenet

11-Mar-08 17:31

Yes

fine, you msut give smtp server name ,port ,username ,password and etc.

this is way, please use the Appconfig file add all ur attributes.

after you can access by the configuration class in .net.

thanks

Cheers,Earn and Enjoy
RRave
MCTS,MCPD
http://ravesoft.blogspot.com

dynamic variables inside While loop

Member 278914211-Mar-08 8:03

Member 2789142

11-Mar-08 8:03

Forgive my dull C# questions, but I am a sometimes programmer needing to get up to speed very quickly:
1) Want to dynamically rename a variable within the loop, as in
AltChunkpart#

would become

altChunkpart1
altChunkpart2
etc.

2) Similarly, but it seems to be a special URI-specific case to be part of this line:

Uri uri# = new Uri("/programDescription#.txt", UriKind.Relative);

Uri uri#

would become

Uri uri1
Uri uri2
etc.

Failing to increment the 'uri' within the loop produces this error: "A local variable named 'uri' cannot be declared in this scope because it would give a different meaning to 'uri', which is already used in a 'parent or current' scope to denote something else"

Any guidance will be sincerely appreciated.

Jogannon

Re: dynamic variables inside While loop

Christian Graus11-Mar-08 8:16

Christian Graus

11-Mar-08 8:16

1 - can't be done. Instead, make an array and put that ending digit as the index into the array
2 - can't be done.

Your overall issue is that you have something like this:

Uri uri

for(whateveR)
{
Uri uri;

}

The second Uri can't have the same name as one in the higher scope. Just use a different name, it doesn't need to be different on each iteration, it just needs to be different than the name of the variable it would otherwise hide. Or, just use the same one, if the value does not matter in the higher scope.

string s = "one";

for(whateveR)
{
s = "two";

}

// now s == "two"

Re: dynamic variables inside While loop

Member 278914211-Mar-08 8:29

Member 2789142

11-Mar-08 8:29

Thanks Christian. Great explanation. Now let me go and try to apply it.

Jogannon

Re: dynamic variables inside While loop

Member 278914211-Mar-08 9:01

Member 2789142

11-Mar-08 9:01

Christian,
I am sorry to be so thick, however I understand the underlying need to have unique variable names. It is a matter of how does s == "two"? I do not see any counting or incrementing code in your example. My own approach (which fails) is to try and append (or concatenate an incrementing int value to the string name. Should I avoid this approach and go with a string array technique instead. Any concrete example will really help at this point.

Thanks,

Jogannon

Re: dynamic variables inside While loop

Christian Graus11-Mar-08 9:10

Christian Graus

11-Mar-08 9:10

"one" and "two" were arbitrary examples - the point was simply that the value given to the variable inside the second scope, applied to the first scope, too. I was illustrating that in your instance, you have a variable named uri in the outer scope, and so you couldn't create one with the same name in the inner scope, and if you reused the outer scope one to keep the same name, you would find that setting it, changed it for the outer scope.

Wow, now I'm confused Smile | :)

I was showing that if you used uri where you were putting Uri uri and getting the error, you would have flow on effects.

If you need to keep the variables you wanted to name uri1, uri2, etc for any reason, a list or array is the way to do that. If you were creating a variable for loop processing that is not reused, then just use a different name, like uriLoop or something.

Re: dynamic variables inside While loop

Member 278914211-Mar-08 9:12

Member 2789142

11-Mar-08 9:12

Thanks again, Christian. Let me go and work on this.

Jogannon

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.