Re: synchronization object choosing - C# Discussion Boards

Re: how to search particular word

22-Mar-08 11:43

The most obvious way would be to use google.

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 )

sugunavathysubramanian24-Mar-08 20:24

sugunavathysubramanian

24-Mar-08 20:24

Thank you .but I want do to our own search from my own web site. It is possible.

Re: how to search particular word

Christian Graus24-Mar-08 21:09

synchronization object choosing

24-Mar-08 21:09

Yes, of course it is. You'd have to have no dynamic pages, and store all your pages in a SQL Server database. Or, you'd have to write your own search engine that indexes all your pages.

George_George22-Mar-08 0:36

22-Mar-08 0:36

Hello everyone,

What means "the synchronizing object can double as the object it's protecting" in below statements about synchronization object choosing?

I quote the whole paragraph,

http://www.albahari.com/threading/part2.html

--------------------
Choosing the Synchronization Object
Any object visible to each of the partaking threads can be used as a synchronizing object, subject to one hard rule: it must be a reference type. It’s also highly recommended that the synchronizing object be privately scoped to the class (i.e. a private instance field) to prevent an unintentional interaction from external code locking the same object. Subject to these rules, the synchronizing object can double as the object it's protecting, such as with the list field below:

class ThreadSafe {
  List <string> list = new List <string>();
 
  void Test() {
    lock (list) {
      list.Add ("Item 1");
      ...

--------------------

thanks in advance,
George

Colin Angus Mackay22-Mar-08 3:12

22-Mar-08 3:12

You have a synchronising object, the object used in the lock statement. You also have the object you are protecting with the lock. The statement means that the object you use in the lock statement can be the same as the object you are protecting.

Does that help?

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George_George22-Mar-08 3:28

22-Mar-08 3:28

Thanks Colin!

I think you metn the "list" object is the synchronising object. But what do you mean "the object you are protecting with the lock", you mean also the list obejct which we are going to make it thread-safe?

regards,
George

Colin Angus Mackay22-Mar-08 3:36

22-Mar-08 3:36

George_George wrote:
I think you metn the "list" object is the synchronising object

In the example the "list" object is the synchronising object.

George_George wrote:
But what do you mean "the object you are protecting with the lock", you mean also the list obejct which we are going to make it thread-safe?

In the example, yes, it will be the list object also.

The example was showing that the object used in the lock, the list, can be the same as the object that is being protected, which is again the list.

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George_George22-Mar-08 3:39

how to use UltimateSearchInput in .net with c#

22-Mar-08 3:39

Thanks Colin,

Question answered.

regards,
George

sugunavathysubramanian21-Mar-08 23:53

sugunavathysubramanian

21-Mar-08 23:53

i want search word in particular web address,so i want to use UltimateSearchInput button,but i didnot know how to use. if u know the code replay to me...

nested lock?

George_George21-Mar-08 23:10

21-Mar-08 23:10

Hello everyone,

From the sample,

http://www.albahari.com/threading/part2.html

Do you know what means "A thread can block only on the first, or outermost lock."?

I quote the related context below as well.

--------------------
Nested Locking
A thread can repeatedly lock the same object, either via multiple calls to Monitor.Enter, or via nested lock statements. The object is then unlocked when a corresponding number of Monitor.Exit statements have executed, or the outermost lock statement has exited. This allows for the most natural semantics when one method calls another as follows:

static object x = new object();
 
static void Main() {
  lock (x) {
     Console.WriteLine ("I have the lock");
     Nest();
     Console.WriteLine ("I still have the lock");
  }
  Here the lock is released.
}
 
static void Nest() {
  lock (x) {
    ... 
  }
  Released the lock? Not quite!
}

A thread can block only on the first, or outermost lock.
--------------------

thanks in advance,
George

Colin Angus Mackay21-Mar-08 23:49

21-Mar-08 23:49

George_George wrote:
Do you know what means "A thread can block only on the first, or outermost lock."?

It means that when it encounters the first lock (or outermost lock) the thread blocks others from accessing the object that is locked.

An individual thread can lock an object as many times as it likes, but it only locks on the first occurrence.

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George_George22-Mar-08 0:44

22-Mar-08 0:44

Thanks Colin,

Two more comments,

1.

Colin Angus Mackay wrote:
It means that when it encounters the first lock (or outermost lock) the thread blocks others from accessing the object that is locked.

Even if the thread can not acquire the outermost lock, it will block other thread from accessing the lock object to try to lock?

2.

Colin Angus Mackay wrote:
An individual thread can lock an object as many times as it likes, but it only locks on the first occurrence.

It is a typo, "only locks on the first occurrence" should be "only blocks on the first occurrence"?

regards,
George

Colin Angus Mackay22-Mar-08 3:09

22-Mar-08 3:09

George_George wrote:
Even if the thread can not acquire the outermost lock, it will block other thread from accessing the lock object to try to lock?

It hast to aquire the lock first. If it can't aquire the lock, it can't block.

George_George wrote:
It is a typo

Yes. You are correct.

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George_George22-Mar-08 3:30

22-Mar-08 3:30

Thanks Colin,

Question answered. Cool!!

regards,
George

CRM 3.0 SDK Problem

hdv21221-Mar-08 20:27

hdv212

21-Mar-08 20:27

Hi How to Install and Configure CRM 3.0 SDK Problem in Vs.Net 2003 ?
please give me an article that explain perfectly.
thanks

Re: CRM 3.0 SDK Problem

Christian Graus21-Mar-08 20:53

how to pass textbox value from one form to other form in window application +c#

21-Mar-08 20:53

Try here[^].

Re: CRM 3.0 SDK Problem

hdv21221-Mar-08 21:37

hdv212

21-Mar-08 21:37

Hi thanks for reply
i tried your suggestion, but i don't found any useful topic with match with my aim in this link[^]

can anyBody help me ?

mrcsn21-Mar-08 18:33

mrcsn

21-Mar-08 18:33

Hi
how to pass textbox value from one form to other form in window application

+c# .If any one knows this help me with code i'm new to window application

Thanks and regards
suman

Re: how to pass textbox value from one form to other form in window application +c#

Steve Echols21-Mar-08 19:06

Steve Echols

21-Mar-08 19:06

Lots of different ways, but you could expose a property on one of the forms like:

public string TheValue
{
get { return theTextBox.Text; }
set { theTextBox.Text = value; }
}

Your other form can set TheValue using code like chee:

form2.TheValue = "stuff";

form2 would be an instance of your "other form" which has already been created, of course.

- S
50 cups of coffee and you know it's on!

Re: how to pass textbox value from one form to other form in window application +c#

ashok_rc521-Mar-08 19:16

ashok_rc5

21-Mar-08 19:16

You can also pass it to a session variable and u can retrive the values in the form u needed.

Re: how to pass textbox value from one form to other form in window application +c#

Christian Graus21-Mar-08 19:40

Re: how to pass textbox value from one form to other form in window application +c#

21-Mar-08 19:40

You're very confused. Forms apps do not have session variables.

Christian Graus21-Mar-08 19:44