Re: why image is not update in other form , on 2nd form closed event ? - C# Discussion Boards

S. Senthil Kumar4-Jun-08 22:59

4-Jun-08 22:59

You could also use Perfmon (perfmon.msc) to track the number of handles open in the process. Perfmon can also log the information, which will be useful if you run the application for an extended period of time.

Regards
Senthil [MVP - Visual C#]
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Re: monitor for handle leak

George_George4-Jun-08 23:06

George_George

4-Jun-08 23:06

Thanks Senthil,

Do you mean the Handle Count for process counter? Or anything better?

regards,
George

Re: monitor for handle leak

S. Senthil Kumar4-Jun-08 23:28

S. Senthil Kumar

4-Jun-08 23:28

George_George wrote:
Do you mean the Handle Count for process counter?

Yes, I meant that.

That apart, if the objects wrapping the handles implement finalizers, and you don't accumulate references to such objects, the handle count should remain relatively constant.

Regards
Senthil [MVP - Visual C#]
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Re: monitor for handle leak

George_George4-Jun-08 23:43

George_George

4-Jun-08 23:43

Thanks Senthil!

1.

"That apart, if the objects wrapping the handles implement finalizers, and you don't accumulate references to such objects, the handle count should remain relatively constant." -- means if Finalizer is not called, the handle to be released in Finalizer is still counter as part of the Handle Count counter, but when Finalizer is called, the handle will not be counter as part of the Handle Count counter?

2.

If I call Close immediately after using the handle or using "using" block, then handle could be closed immediately, and and Handle Count is reduced immediately?

regards,
George

Re: monitor for handle leak

S. Senthil Kumar5-Jun-08 0:06

S. Senthil Kumar

5-Jun-08 0:06

George_George wrote:
means if Finalizer is not called, the handle to be released in Finalizer is still counter as part of the Handle Count counter, but when Finalizer is called, the handle will not be counter as part of the Handle Count counter?

There is no magic there. The finalizer, if implemented properly, will close any handles held by that object and therefore the counter will go down.

George_George wrote:
If I call Close immediately after using the handle or using "using" block, then handle could be closed immediately, and and Handle Count is reduced immediately?

Yes, as long as the object correctly implements the IDisposable pattern.

Regards
Senthil [MVP - Visual C#]
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Re: monitor for handle leak

George_George5-Jun-08 0:39

George_George

5-Jun-08 0:39

Thanks Senthil!

Question answered.

regards,
George

why image is not update in other form , on 2nd form closed event ?

nomi4-Jun-08 20:42

nomi

4-Jun-08 20:42

Here is the code what is the probelm any one can help me plzzzzz

protected override void OnClosed(EventArgs e)
{
if (this.appWorkspace.ActiveDocumentWorkspace != null)
{
appWorkspace.ActiveDocumentWorkspace.SetTool(null);
}

base.OnClosed(e);

//n send image to frmedit in cc13
CCI3.Forms.frmEdit s = new CCI3.Forms.frmEdit();
// s.mSetPicture(PictureBox, "true");
//s.VarEditImg
//s.VarEditSig
s.PicImage.Image = null;

s.PicImage.Image = Image.FromFile(@"C:\Temp\Temp1.jpg");
s.PicImage.Refresh();

s.picSig.Image = null;

s.picSig.Image = Image.FromFile(@"C:\Temp\Temp2.jpg");
s.picSig.Refresh();
//s.Con
s.Showimg();

CCI3.Myimg g = new CCI3.Myimg();
g.Showimg2();

//CCI3.Forms.frmEdit ss = new CCI3.Forms.frmEdit();
//ss.setEditPictures(@"C:\Temp\Temp1.jpg", @"C:\Temp\Temp2.jpg");

}

Re: why image is not update in other form , on 2nd form closed event ?

leppie4-Jun-08 23:04

leppie

4-Jun-08 23:04

nomi wrote:
Here is the code what is the probelm any one can help me plzzzzz

nomi wrote:
CCI3.Forms.frmEdit s = new CCI3.Forms.frmEdit();

You are creating form and not adding it anywhere to you application, so it will fail.

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Re: why image is not update in other form , on 2nd form closed event ?

J a a n s4-Jun-08 23:04

J a a n s

4-Jun-08 23:04

You have just given a bunch of code which one else is aware of. If you need a proper solution you have to explain your problem correctly.

Ok, Here is the clue. In the following line of code you are creating a new object which will be disposed once the scope is over.

CCI3.Forms.frmEdit s = new CCI3.Forms.frmEdit();

Instead refer to the existing instance of your form.

Note: If you are using CAB, you can take the help of event broker.

Re: why image is not update in other form , on 2nd form closed event ?

wasimsharp4-Jun-08 23:50

wasimsharp

4-Jun-08 23:50

hello nomi
mujay apkay maslay ka pata chel gya hay

f.show();
ki jaga

f.showDialog(); use kero subkhuch tik ho ji ga.
Begham ho jao Nomi

if this answere is helpfull then donot forget to mark [Smile]

wasim khan

Ignore - repost

Guffa5-Jun-08 1:38

Guffa

5-Jun-08 1:38

I have already explained why it doesn't work, and I am not the only one who has done that.

Don't repost the same question. That way it seem like you are simply ignoring the people who tries to help you. In the long run you will just end up being ignored by everyone.

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

bind grid using cascade drop down with out postback

Member 38798814-Jun-08 20:42

Member 3879881

4-Jun-08 20:42

Hi i have cascading dropdown,
In that i have bind some datas from my database,
Now based on the selection my grid want to bind with out postback event,
Anypossiblity is there to do?,
Plz hlp me,

Thanks & Regards,
NeW OnE,
please don't forget to vote on the post

Re: bind grid using cascade drop down with out postback

leppie4-Jun-08 23:05

leppie

4-Jun-08 23:05

New one wrote:
Anypossiblity is there to do?,

Yes, in the ASP.NET forum.

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Re: bind grid using cascade drop down with out postback

wasimsharp5-Jun-08 0:21

wasimsharp

5-Jun-08 0:21

use ajax

wasim khan

Type.GetFields Method (BindingFlags)

George_George4-Jun-08 19:40

George_George

4-Jun-08 19:40

Hello everyone,

From MSDN about Type.GetFields Method (BindingFlags),

http://msdn.microsoft.com/en-us/library/6ztex2dc(VS.80).aspx

What means "When overridden in a derived class, searches for the fields defined for the current Type"? I can not find related description for this point in the MSDN related sample. Especially "overridden in a derived class" and "defined for the current Type"?

thanks in advance,
George

Re: Type.GetFields Method (BindingFlags)

S. Senthil Kumar4-Jun-08 22:57

S. Senthil Kumar

4-Jun-08 22:57

George_George wrote:
What means "When overridden in a derived class, searches for the fields defined for the current Type"?

System.Type is an abstract class, and GetFields is an abstract method. There are several classes that derived from Type, and MSDN says that when it is overridden in a derived class, it must return the fields associated with the "underlying" type that the Type object represents.

Regards
Senthil [MVP - Visual C#]
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Re: Type.GetFields Method (BindingFlags)

George_George4-Jun-08 23:00

George_George

4-Jun-08 23:00

Thanks Senthil,

I have written a test case, I am using a base class type variable to point to a derived type and in the derived type, I override a method of base class.

But it seems I can get nothing in variable fields. Any ideas?

class Program
{
    class Foo
    {
        public static int abc;
        virtual public void bcd()
        {

        }
    }

    class Goo : Foo
    {
        override public void bcd()
        {

        }
    }

    static void Main(string[] args)
    {
        Foo f = new Goo();
        FieldInfo[] fields = f.GetType().GetFields(BindingFlags.Instance | BindingFlags.Public);

        return;
    }
}

regards,
George

Re: Type.GetFields Method (BindingFlags)

S. Senthil Kumar4-Jun-08 23:24

S. Senthil Kumar

4-Jun-08 23:24

George_George wrote:
But it seems I can get nothing in variable fields. Any ideas?

The text in the MSDN page is for people deriving from System.Type, for whatever reason. From a user's perspective, it returns the list of fields in the class represented by the Type.

Regards
Senthil [MVP - Visual C#]
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Re: Type.GetFields Method (BindingFlags)

George_George4-Jun-08 23:44

George_George

4-Jun-08 23:44

Thanks Senthil,

The fields only for member variables, not for functions?

regards,
George

Re: Type.GetFields Method (BindingFlags)

S. Senthil Kumar5-Jun-08 0:03

S. Senthil Kumar

5-Jun-08 0:03

GetFields returns only fields (member variables) in that type. Type.GetMethods[^] returns functions defined in that Type.

Regards
Senthil [MVP - Visual C#]
_____________________________
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Re: Type.GetFields Method (BindingFlags)

George_George5-Jun-08 0:51

George_George

5-Jun-08 0:51

Thanks Senthil,

Looks like GetMembers return both methods and fields, and GetMethods/GetFields returns just method/field? So, GetMembers is more powerful. Smile | :)

regards,
George

Re: Type.GetFields Method (BindingFlags)

leppie5-Jun-08 0:18

leppie

5-Jun-08 0:18

Call GetMembers then.

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Re: Type.GetFields Method (BindingFlags)

George_George5-Jun-08 0:49

George_George

5-Jun-08 0:49

I have tested it, leppie!

Looks like GetMembers is more powerful than GetFields. Smile | :)

regards,
George

Re: Type.GetFields Method (BindingFlags)

leppie5-Jun-08 0:19

leppie

5-Jun-08 0:19

S. Senthil Kumar wrote:
for whatever reason.

Every single type defined derives from Type as a RuntimeType.

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Re: Type.GetFields Method (BindingFlags)

George_George5-Jun-08 0:43

George_George

5-Jun-08 0:43

For any user defined class, does the class implicitly derives from Type?

regards,
George

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