How to check if particular class is user defined? - C# Discussion Boards

Re: How to read a file from any kind of documents and display its contents?

CoderForEver14-Dec-09 2:45

14-Dec-09 2:45

Or forget about the Pdf and Word ... but how do i gather the words in an array ... in just a text document ...
Thank you

Re: How to read a file from any kind of documents and display its contents?

EliottA14-Dec-09 3:23

EliottA

14-Dec-09 3:23

Use string.split with a blank space as your separator to populate an array of just each individual word.

check out the documentation[^] for more basic string manipulation.

Check out the CodeProject forum Guidelines[^]
The original soapbox 1.0 is back![^]

Re: How to read a file from any kind of documents and display its contents?

Eddy Vluggen14-Dec-09 3:10

Eddy Vluggen

14-Dec-09 3:10

Each document has a specific structure. Word-documents and PDF files can't be "read", because the computer doesn't know how to read them. Those documents contain extra information like "this part text in bold formatting", and "this in red". All that information is stored in between the words that you see when you open the thing in Word.

CoderForEver wrote:
1. How can I put each words(separated by Space and newline) in to array ... just to know each word (here displaying the content is not necessary)

You can't until you have something to decode the file. You can save Word-files as RTF. Take a look at the result with a text-editor, and you'll see where the extra codes are located. You can also save the file as HTML. Again, a coded form, just like the binary representation.

I are Troll Suspicious | :suss:

Re: How to read a file from any kind of documents and display its contents?

CoderForEver14-Dec-09 4:18

CoderForEver

14-Dec-09 4:18

Eddy Vluggen wrote:
You can save Word-files as RTF

So can I read this RTF file .... then display it on Richtext box ? ... or what is left?
Thnk you for your help

Re: How to read a file from any kind of documents and display its contents?

Maximilien14-Dec-09 4:51

Maximilien

14-Dec-09 4:51

~~if you use a CRichEditCtrl, you can directly load RTF files.~~

Sorry 'bout that....
Well, we're in the C# forum, so use the equivalent C# control, I'm certain you can so the same thing.

see http://msdn.microsoft.com/en-us/library/system.windows.forms.richtextbox.loadfile.aspx[^] (is that correct, I'm no C# expert)

Max.

This signature was proudly tested on animals.

Re: How to read a file from any kind of documents and display its contents?

Eddy Vluggen14-Dec-09 5:32

Eddy Vluggen

14-Dec-09 5:32

CoderForEver wrote:
So can I read this RTF file .... then display it on Richtext box ?

Yup. The same method can be used to read plain text files. If you want to read another format, then you'll have to provide methods to read those formats.

Reading Word-files directly is a fair bit more complex.

I are Troll Suspicious | :suss:

Re: How to read a file from any kind of documents and display its contents?

Pete O'Hanlon14-Dec-09 3:37

Pete O'Hanlon

14-Dec-09 3:37

One way to do this would be to use the Index Server IFilter approach and read the words this way, outlined here[^].

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

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How to check if particular class is user defined?

AksharRoop14-Dec-09 1:25

AksharRoop

14-Dec-09 1:25

Hi All,

I am writing an application in which I need to put check if a class is user defined or built in (C# or .Net).

Can someone help me with this?

Thanks,
AksharRoop

Re: How to check if particular class is user defined?

Eddy Vluggen14-Dec-09 1:37

Eddy Vluggen

14-Dec-09 1:37

This might not be the ideal solution, but you can get the namespace of a type. You could check whether the class part of the "System" or "Microsoft" namespaces Smile | :)

I are Troll Suspicious | :suss:

Re: How to check if particular class is user defined?

AksharRoop14-Dec-09 1:40

AksharRoop

14-Dec-09 1:40

Thanks but I need better solution if any .. Smile | :)

Re: How to check if particular class is user defined?

Dave Kreskowiak14-Dec-09 2:19

Dave Kreskowiak

14-Dec-09 2:19

There is no way to reliably tell. All classes in the .NET Framework are "user defined".

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008
But no longer in 2009...

Re: How to check if particular class is user defined?

freakyit14-Dec-09 3:06

freakyit

14-Dec-09 3:06

hi,

if you write the classes you can use Attribute elements to determinate it.

Re: How to check if particular class is user defined?

^Sir Dot Net14-Dec-09 11:50

^Sir Dot Net

14-Dec-09 11:50

You could get the assembly attributes at runtime and check the publisher's name and or copyright notice for 'Microsoft'. Obviously this is not rock solid, but if you want that, the only verifiable way I can think of at the moment is to build a dictionary of all the .NET assemblies and their hash digests (See Assembly.Evidence), then verify the assembly against your dictionary. Not pretty.

Unique Serial Number of an SD (Secure Digital) Memory Card

Gaurav Dudeja India14-Dec-09 0:14

Gaurav Dudeja India

14-Dec-09 0:14

I'm trying to get the Unique Serial Number of an SD (Secure Digital) Memory Card, I know how to get the volume information and the like. From reading the specification for the SD Card, I do know each has such an Unique ID. After doing many search here, google, and other web sites I haven't been able to find the answer.

I want the code in c#

Thanks as always for any help you can provide

Re: Unique Serial Number of an SD (Secure Digital) Memory Card

harold aptroot14-Dec-09 0:29

harold aptroot

14-Dec-09 0:29

Why do you need it?

[Message Deleted]

Gaurav Dudeja India14-Dec-09 0:31

Gaurav Dudeja India

14-Dec-09 0:31

[Message Deleted]

Re: Unique Serial Number of an SD (Secure Digital) Memory Card

harold aptroot14-Dec-09 0:40

harold aptroot

14-Dec-09 0:40

But what kind of application? The reason I asked it in the first place is because I want to find out whether it's something evil or not

Re: Unique Serial Number of an SD (Secure Digital) Memory Card

Abhinav S14-Dec-09 0:50

Abhinav S

14-Dec-09 0:50

harold aptroot wrote:
evil

Always good to check the motive behind such code. Roll eyes | :rolleyes:

.
So I gave 5 to your messages.

There's nothing left in my right brain and nothing right in my left brain.

Re: Unique Serial Number of an SD (Secure Digital) Memory Card

OriginalGriff14-Dec-09 0:59

OriginalGriff

14-Dec-09 0:59

The official way is to pay sdcard.org significant money every year and they'll give you the information once they have vetted you.

There may be an unofficial way in the form of leaked source code, but considering that such information is under strict NDA, don't expect it to be found easily, or to be reliable if you do find it.

You may be better off finding some other form of security if cost is an issue.

All those who believe in psycho kinesis, raise my hand.

Re: Unique Serial Number of an SD (Secure Digital) Memory Card

Gaurav Dudeja India14-Dec-09 1:01

Gaurav Dudeja India

14-Dec-09 1:01

Thanks for reply,

But, I only want to read the UID number no need to edit or delete it.So is there is no way to read UID of memory cards without registering on SDcard.com?

Re: Unique Serial Number of an SD (Secure Digital) Memory Card

OriginalGriff14-Dec-09 1:15

OriginalGriff

14-Dec-09 1:15

All such information is considered as the IP of sdcard.com, and is covered by NDA and corporate vetting before release. If you have a legitimate need to access the UID, then you will have to pay for the privelege, and you will have to agree to the terms of their NDA.

All those who believe in psycho kinesis, raise my hand.

Application common data with write permission to all user

Maddie from Dartford13-Dec-09 23:41

Maddie from Dartford

13-Dec-09 23:41

Hello,
I am writing C# desktop appplication and I want to store some application specific data which should be accessible to all user with write permission. I am using Environment.SpecialFolder.CommonApplicationData for setting location to write file but I found that the file created in my login is not editable by other user.

Where should I create the file so that it shoul be accessible to all user with write permission?

Regards,
Gajesh

Re: Application common data with write permission to all user

OriginalGriff14-Dec-09 1:32

OriginalGriff

14-Dec-09 1:32

If you have created the file when you logged in, then the most likely reason it is not accessible to all users is that it is still in use. It will remain in use once you create it until it is disposed. You can try wrapping you access code in "using" blocks, but I suspect you are always going to get problems of file in use if you try to have multiple users capable of writing to it.

Have you considered using a database instead? You may get less problems.

All those who believe in psycho kinesis, raise my hand.

Re: Application common data with write permission to all user

Maddie from Dartford14-Dec-09 2:49

Maddie from Dartford

14-Dec-09 2:49

Thanks a lot for reply.
In our application, an XML File is generated when user wants to save some application data from given menu option. These data can be read back to display the information by any logged user. Now, other user should be able to modify the data and save it back. At a time only one user is editing so I think the problem is with the access right (Exception says the same thing: access denied).

Regards,
Gajesh

Re: Application common data with write permission to all user

OriginalGriff14-Dec-09 4:10

OriginalGriff

14-Dec-09 4:10

It doesn't have to be the access permissions - though it is worth checking that your users have the correct access rights to the folder. Have you tried setting it to a shared folder with universal read/write permissions?

The other possibility is that the file is still in use - you will get an access denied for this as well as for incorrect permissions. If you do not dispose of your File object, it may not be destroyed for some considerable time, and during this period it can be in use even if you have closed it. Ensure that all your file access code - including your users - is safely within "using" blocks and you should be ok. Even then, you will probably have to try...catch...wait...retry a few times for safety if you have multiple users writing to a file.

I would still be considering a database rather than an XML file!

All those who believe in psycho kinesis, raise my hand.

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