C# Discussion Boards - CodeProject

Inherited permissions for a file or directory

Alper Alaca28-Mar-07 2:04

28-Mar-07 2:04

Hi,
I can read file/directory permissions using
ManagementPath class
and
path.RelativePath = "Win32_LogicalFileSecuritySetting.Path='c:\\oracle';
etc.

Besides, I need to read if that particular permission setting is inherited or not,
as it is seen from the image attached-the column "Inherited from"-
Is there a way?
Thank you...
Click here for sample image for permissions

Re: Inherited permissions for a file or directory

Alper Alaca28-Mar-07 4:11

Alper Alaca

28-Mar-07 4:11

I think I've found it.
It's like:

string dirPath = @"c:\\oracle\temp";
DirectorySecurity ds = Directory.GetAccessControl(dirPath);
AuthorizationRuleCollection arc = ds.GetAccessRules(true, true, typeof(System.Security.Principal.NTAccount));
foreach (FileSystemAccessRule fsar in arc)
{
string identity = fsar.IdentityReference.Value;
string access = fsar.AccessControlType.ToString();
string rights = fsar.FileSystemRights.ToString();
bool inherited = fsar.IsInherited;
}

string filePath = @"c:\\oracle\sqlnet2.ora";
FileSecurity fs = File.GetAccessControl(filePath);
arc = fs.GetAccessRules(true, true, typeof(System.Security.Principal.NTAccount));
foreach (FileSystemAccessRule fsar in arc)
{
string identity = fsar.IdentityReference.Value;
string access = fsar.AccessControlType.ToString();
string rights = fsar.FileSystemRights.ToString();
bool inherited = fsar.IsInherited;
}

Send ArrayList to ( webMethod) - Web Service

mm31028-Mar-07 1:59

mm310

28-Mar-07 1:59

How i can Send ArrayList to WebMethod ? i used this code in WebService class

[WebMethod]<br />
public void getData(ArrayList DataS)<br />
{<br />
}

and send data from clinet to Web Service like this

localhost.Service BB = new localhost.Service();<br />
<br />
ArrayList dS = new ArrayList();<br />
<br />
BB.getData(ds);

this code is not work , any one can Exp this problem ?

Issue with NameValueCollection

SakthiSurya28-Mar-07 1:15

SakthiSurya

28-Mar-07 1:15

Hi,

As i want to store more than a value for a single key, i am using

NameValueCollection for storing the values.

Periodically (say for every 10 seconds), i will remove the values for

further processing with

nvCollection[Key]=null;

In this case, the null is also counted as a value. How can i

eliminate this null value.

With thanks,
Sakthi.

Re: Issue with NameValueCollection

Vikram A Punathambekar28-Mar-07 2:19

Vikram A Punathambekar

28-Mar-07 2:19

To remove values for a key, use the NameValueCollection.Remove() method.

Cheers,
Vikram.

The cold will freeze our stares
We won't care...

Re: Issue with NameValueCollection

SakthiSurya28-Mar-07 2:28

SakthiSurya

28-Mar-07 2:28

Hi,

NameValueCollection.Remove() Will remove even the key .

i.e. entire key value pair will be removed.

But i want only the values to be removed retaining the key.

With Thanks,

Sakthi.

Re: Issue with NameValueCollection

joon _vh.28-Mar-07 3:44

joon _vh.

28-Mar-07 3:44

what do you mean by 'the null is counted as a value'?

Visual Studio can't evaluate this, can you?

public object moo<br />
        {<br />
__get { return moo; }<br />
__set { moo = value; }<br />
}

Re: Issue with NameValueCollection

rah_sin28-Mar-07 2:40

rah_sin

28-Mar-07 2:40

u can try
if( nvCollection.Contains(key))
{
String oldkey = key;
nvCollection.Remove(key);
nvCollection.Add(oldkey,newvalue);
}

rahul

Re: Issue with NameValueCollection

SakthiSurya28-Mar-07 18:27

SakthiSurya

28-Mar-07 18:27

Hi,

I am storing data into the NameValueCollection.For every 10 seconds i

have to take the values out, for that i am using

nvc.getValues(key)

After that i am clearing the values for that key by

nvc[key]=null;

In this case null is also considered as one of the value for that

key. When i use remove, the key is also cleared.

As i want the order of the key to be preserved.i dont want to do

anything with the key.

How to read Textfile FAST into memory and then read LINE

error140828-Mar-07 0:52

error1408

28-Mar-07 0:52

Hi,
have to parse a big Textfile with about 33000 lines and at the moment this is very slow.
A colleague advised me to read the file into a buffer (byte Array) and than parse it. Thats ok, but i need the "readline" functionality.
How can i read the buffer line-by-line like the Streamreader?
I'm sure someone knows Big Grin | :-D

Re: How to read Textfile FAST into memory and then read LINE

Pete O'Hanlon28-Mar-07 2:03

Pete O'Hanlon

28-Mar-07 2:03

I guess you could always convert the byte array into a string and then split it based on Environment.NewLine. This sounds as though it wouldn't be very performant either.

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

Re: How to read Textfile FAST into memory and then read LINE

woudwijk28-Mar-07 5:18

woudwijk

28-Mar-07 5:18

you could use FileStream to copy the file into a MemoryStream, and later use StreamReader from MemoryStream to parse it.

<br />
FileStream fs = new FileStream("text.txt", FileMode.Open, FileAccess.Read);<br />
MemoryStream ms = new MemoryStream();<br />
<br />
byte[] buf = new byte[4096];<br />
int bytes = 0;<br />
while((bytes = fs.Read(buf, 0, 4096)) > 0) {<br />
   ms.Write(buf, 0, bytes);<br />
}<br />
fs.close();<br />
<br />
StreamReader sr = new StreamReader(ms);<br />
string x = sr.ReadLine();<br />

My second computer is your linux box.

About MDI applications

Raheem MA28-Mar-07 0:49

Raheem MA

28-Mar-07 0:49

Hi Friend'z

I have MDI application which contains multiple forms, From Main page's main menu i have opened login form. after entering login details, i have to go to main page. i'm going to another page but login page wil not b closing. the Login form should be closed after main page is opened.

How can i do it?

pl help me friends... thanks in advance!

ITS VERY URGENT FRIEND'Z
please yar.

Raheem MA
Tr. Systems Engineer.

Re: About MDI applications

Pete O'Hanlon28-Mar-07 1:34

Pete O'Hanlon

28-Mar-07 1:34

See point 1. Clickety[^]

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

DataAdapter.Fill(DataSet) in a thread

Seishin#28-Mar-07 0:43

Seishin#

28-Mar-07 0:43

Hi!
I'm using a
ThreadPool.QueueUserWorkItem(GetData);
method to get some data (from sqldb). the GetData method is sth uses a DataAdapter object to fill untyped dataSet and returns its fitst table (Tables[0] - if != null of course)..
the problem is that the dataAdapter doesn't always fill the dataset - the table is not created when it's suppoused to be - the sql server received the querry and completed it (i checked it using profiler). well the only solution i was able to get is

<br />
int safeCt = 5;<br />
while(dataSet.Tables.Count == 0 && safeCt > 0) {<br />
try {<br />
dataAdapter.Fill(dataSet);<br />
if(dataSet.Tables.Count == 0)<br />
System.Threading.Thread.Sleep(500);<br />
} catch { }<br />
safeCt--;<br />
}<br />

for 6 out of 200 querries the fill was called twice..
well, it works, but is there any better way?!

life is study!!!

switch statement

blackjack215028-Mar-07 0:30

blackjack2150

28-Mar-07 0:30

Doesn't the switch statement in C# support multiple options inside the case clause??? I'm sorry if I missed it.

Re: switch statement

Brady Kelly28-Mar-07 0:34

Brady Kelly

28-Mar-07 0:34

No, but you can use empty case labels to achieve this. Example

switch (x)
{
case 1:
case 2:
DoOneAndTwo;
break;
}

Re: switch statement

Muammar©28-Mar-07 0:34

Muammar©

28-Mar-07 0:34

blackjack2150 wrote:
multiple options inside the case clause???

What do you mean?? Another switch case statement??

Smile: A curve that can set a lot of things straight!
(\ /)
(O.o)
(><)

Re: switch statement

blackjack215028-Mar-07 0:40

blackjack2150

28-Mar-07 0:40

I mean something like this:

switch(DayOfWeek)
{
case "Monday", "Tuesday", "Wednesday", "Thursday", "Friday" : work = true;
case "Saturday", "Sunday": party = true;
}

VB .NET for example has it and that's quite sad for me, as I've preferred C# over VB.

Re: switch statement

woudwijk28-Mar-07 1:42

woudwijk

28-Mar-07 1:42

switch (DayOfWeek)<br />
{<br />
    case DayOfWeek.Monday:<br />
    case DayOfWeek.Tuesday:<br />
    case DayOfWeek.Wednesday:<br />
    case DayOfWeek.Thursday:<br />
    case DayOfWeek.Friday:<br />
        work = true;<br />
        break;<br />
    case DayOfWeek.Saturday:<br />
    case DayOfWeek.Sunday:<br />
        party = true;<br />
        break;<br />
}

well, it works for me... think you may be doing something wrong

My second computer is your linux box.

Memory leaks!

Duong Tien Nam28-Mar-07 0:22

Duong Tien Nam

28-Mar-07 0:22

Hi all,

I have a complicated form. I call that form from my main form and then close it.
After close I call GC.Collect() to ensure that all the memory used for the form has been removed. But it still exited.

I load sos.dll and use !dumpheap -stat command to show memory and see that my form and all controls and objects the form use still existed.

I debug for a long time, remove delegates, dispose disposable objects etc. but the form didnt' go.

So how can I know which object hold reference to the form? (they call them root reference as I remember). Any article, any tool to solve my problems.

It's critical, please help me.

Regards,

Re: Memory leaks!

Martin#28-Mar-07 1:12

Martin#

28-Mar-07 1:12

Hello,

I work with: http://memprofiler.com/[^].

All the best,

Martin

Re: Memory leaks!

Scott Dorman28-Mar-07 5:41

Scott Dorman

28-Mar-07 5:41

You can use memprofiler (mentioned in the other post) and you can also use the CLR Profiler[^] tool.

You really shouldn't be calling GC.Collect() yourself in any case. All this does is force a garbage collection cycle to run "out of turn", which ultimately causes more work for the GC. Whenever a collection cycle runs, your applications main thread is frozen for the duration of the cycle...so the more times you force a collection, the worse your performance will become.

Once you close the form, are you setting the variable reference to null?

-----------------------------
In just two days, tomorrow will be yesterday.

how to show Multiple colors in a Single Progress Bar

pashitech28-Mar-07 0:17

pashitech

28-Mar-07 0:17

Hi all,
i want to show multiple colors in a single progress bar,
do we have any customized tool for this,.
thnx in advance

prashath

Re: how to show Multiple colors in a Single Progress Bar

joon _vh.28-Mar-07 3:48

joon _vh.

28-Mar-07 3:48

I'm afraid you're going to have to make your own progressbar class.

This article might help:
http://www.codeproject.com/cs/miscctrl/colorprogressbar.asp

Visual Studio can't evaluate this, can you?

public object moo<br />
        {<br />
__get { return moo; }<br />
__set { moo = value; }<br />
}

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