Re: CurrentTimestamp - C# Discussion Boards

Re: Cool signature! [modified]

19-Jun-07 7:22

DateTime.Now() returns current time

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Cool signature!

Martin#19-Jun-07 9:29

Martin#

19-Jun-07 9:29

Giorgi Dalakishvili wrote:
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Very good!
I recognized that there was some confusion because of the articles link, but you really solfed it like a pro!

Giorgi Dalakishvili19-Jun-07 10:01

19-Jun-07 10:01

Martin# wrote:
I recognized that there was some confusion because of the articles link

Thanks

Yes there have been several cases so I decided to solve it somehow. It would be cool if it had the same capabilities as in VS ` Big Grin | :-D

-- modified at 16:21 Tuesday 19th June, 2007

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Re: CurrentTimestamp

Le centriste20-Jun-07 2:06

Le centriste

20-Jun-07 2:06

I don't want to look picky, but DateTime.Now is a property, not a method. In my newbie times, this would have confused me.

-----

Formerly MP(2)

If atheism is a religion, then not collecting stamps is a hobby. -- Unknown

Re: CurrentTimestamp

Giorgi Dalakishvili20-Jun-07 2:49

20-Jun-07 2:49

Le Centriste wrote:
I don't want to look picky, but DateTime.Now is a property, not a method. In my newbie times, this would have confused me.

Yes I have made mistake Smile | :)

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File Open Status/Access

RussBus19-Jun-07 7:10

19-Jun-07 7:10

Background: I am building a custom XML editor slash encryption tool.

I am having a problem dealing with multiple people accessing the same file (or a single person accessing the same file). What I am looking to do is if the file is currently open the user is prompted that the file is already open and only has read access.

Right now the user can open a file that is already open, then when either people with the same file go to save an error is thrown and the file is locked against any saving.

So my question is:

1)Is there a way to check if a file is already open?
2)If the file is open, the original person who opened keeps writing privilege well the other user is only given read access?
3)Can I prevent the file from being locked?

Thanks for the help. Big Grin | :-D

Giorgi Dalakishvili19-Jun-07 7:27

19-Jun-07 7:27

When creating a new instance of FileStream class you can specify how other programs can access the file by FileShare enumeration

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RussBus19-Jun-07 7:32

19-Jun-07 7:32

I will give that a try, thank you

RussBus19-Jun-07 10:03

19-Jun-07 10:03

I am getting an access error using this code:

try
{
m_oZipFile = new ZipFile(new FileStream(l_szLocation, FileMode.Open, FileAccess.ReadWrite, FileShare.Read));
}

catch
{
m_oZipFile = new ZipFile(new FileStream(l_szLocation, FileMode.Open, FileAccess.Read, FileShare.Read));
}

Giorgi Dalakishvili19-Jun-07 10:27

19-Jun-07 10:27

What error are you getting?

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RussBus19-Jun-07 10:47

19-Jun-07 10:47

The process cannot access the file 'C:\EncryptionTesting\DecryptInput\test-dispatch.config.rld' because it is being used by another process.

Abisodun19-Jun-07 11:30

Abisodun

19-Jun-07 11:30

My guess is the Close() method was not called on a previous instance of the FileStream. From your sample code there is no reference to the FileStream.

RussBus19-Jun-07 11:42

19-Jun-07 11:42

The FileStream is called in the ZipFile call.

It seems to be sort of working now, what is mean is if I open 2 copies of the "Encryptor" tool the first one that access's the file always has read and write. The second one only gets read access, and never gets write access even after the first one is closed. From what I understand it should be given write access after the first one is closed. The code never actual gets into that catch statement as it does pass through the try statement.

RussBus19-Jun-07 11:53

19-Jun-07 11:53

This is my latest code:

try
{
m_oZipFile = new ZipFile(new FileStream(l_szLocation, FileMode.Open, FileAccess.ReadWrite, FileShare.Read));
}

catch
{
MessageBox.Show("FILE IS ALREADY OPEN", "READ ACCESS ONLY", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
m_oZipFile = new ZipFile(new FileStream(l_szLocation, FileMode.Open, FileAccess.Read, FileShare.Read));
}

I am getting the following error:
The process cannot access the file 'C:\EncryptionTesting\DecryptInput\test-dispatch.config.rld' because it is being used by another process.

how to call the dll writed by c in c#

Abisodun19-Jun-07 14:12

Abisodun

19-Jun-07 14:12

Your problem is probably in the second FileStream. FileShare.Read in the catch means that the first file stream (in the try) can have read access only.

<br />
catch<br />
{<br />
   MessageBox.Show("FILE IS ALREADY OPEN", "READ ACCESS ONLY", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);<br />
   m_oZipFile = new ZipFile(new FileStream(l_szLocation, FileMode.Open, FileAccess.Read, FileShare.ReadWrite));<br />
}<br />

anuo0619-Jun-07 6:20

anuo06

19-Jun-07 6:20

Hi,every one,I have a problem in C# about calling dll writed by c, like the following,I can't get the correct answer.who can tell me why? Frown | :(

Here is the code about the dll's header file:

void _stdcall chuck(string);
void _stdcall wolfhome(string);
void _stdcall wolfsist(string);
void mein(char* directx11);
char* deme();
void inshuxiyin(char* directx11);
char* deshuxiyin();
char* _stdcall deshumil();
char* _stdcall shuredel();
char* _stdcall getDecryptStr();
void _stdcall wolfhomeseal(string);
void _stdcall wolfsistseal(string);

Here is the code about c#

[DllImport("bear.dll",CallingConvention=CallingConvention.StdCall)]
public static extern void chuck(string s);
[DllImport("bear.dll",CallingConvention=CallingConvention.StdCall)]
public static extern void wolfhomeseal(string s);
[DllImport("bear.dll")]
public static extern void wolfsistseal([MarshalAs(UnmanagedType.LPStr)] string s);
[DllImport("bear.dll",CallingConvention=CallingConvention.StdCall)]
public static extern string deshumil();
[DllImport("bear.dll")]
public static extern string shuredel();
[DllImport("bear.dll")]
public static extern string getDecryptStr();

These are the methods I have tried,but none works fine,what problem exitsts?
Waiting for your answer,thanks!

Re: how to call the dll writed by c in c#

Giorgi Dalakishvili19-Jun-07 6:55