Re: What is the method in C# like the method - "repaint()" in JAVA??? - C# Discussion Boards

Re: What is the method in C# like the method - "repaint()" in JAVA???

22-Aug-09 20:11

I was trying to built a "Paint" program that can paint that user wants to paint. but the thing is when my form is minimized or another form is selected over my form the painted portion is removed.
In java , i know that if i use "repaint()" function the it as ok, but what to do with C#.
sorry for my english.
plz help me urgent.
Thanks

Mahbub-E-Rababni [Tafin]

stancrm22-Aug-09 20:19

stancrm

22-Aug-09 20:19

You can use Refresh()
or use Event OnPaint()

Re: What is the method in C# like the method - "repaint()" in JAVA???

TAFIN22-Aug-09 20:31

Re: What is the method in C# like the method - "repaint()" in JAVA???

22-Aug-09 20:31

thanks

OnPaint() can only paint the base form, i can not paint on a panel or a picturbox....what to do???
thanks.

Mahbub-E-Rabbani [TAFIN]
Bangladesh

OriginalGriff22-Aug-09 21:09

OriginalGriff

22-Aug-09 21:09

TAFIN wrote:
OnPaint() can only paint the base form, i can not paint on a panel or a picturbox

Since when?
Every control has it's own Paint event.

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Re: What is the method in C# like the method - "repaint()" in JAVA???

TAFIN22-Aug-09 21:40

Re: What is the method in C# like the method - "repaint()" in JAVA???

22-Aug-09 21:40

i took a form and then a picturebox. i wanted to piant on the picture box that will stay if the form is minimized of sent to back of other forms.
the Event OnPaint()is used for the base Form Form1 but not for picturebox...and does the Event paint() of picturebox does that waht i want!!!
thanks.

mahbub-E-Rabbani [TAFIN]
Bangladesh

OriginalGriff22-Aug-09 21:54

OriginalGriff

22-Aug-09 21:54

Then use the PictureBox.Paint event - if you must use a picture box at all, rather than painting on the form directly. If you Google for "PictureBox.Paint" the first link is the MSDN example of how to paint on a picturebox[^]

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Re: What is the method in C# like the method - "repaint()" in JAVA???

TAFIN22-Aug-09 22:28

Re: What is the method in C# like the method - "repaint()" in JAVA???

22-Aug-09 22:28

ok
thanks Thumbs Up | :thumbsup:

Hristo-Bojilov22-Aug-09 22:51

Hristo-Bojilov

22-Aug-09 22:51

C# repaint equivalent is Invalidate.

Life is a stage and we are all actors!

database size not changed

msrezapro22-Aug-09 15:02

msrezapro

22-Aug-09 15:02

hi.i try delete all data in my database but database size not change.why?
please help me to resize my database.

Re: database size not changed

Luc Pattyn22-Aug-09 15:19

Luc Pattyn

22-Aug-09 15:19

Hi,

databases don't simply grow and shrink as you add or remove data; they will grow in rather large steps, and typically they only shrink when you give a command to compress the database; this reorganizes the entire data storage and may take a while.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

The quality and detail of your question reflects on the effectiveness of the help you are likely to get.
Show formatted code inside PRE tags, and give clear symptoms when describing a problem.

Append cookies in httpwebrequest

Evgeni5722-Aug-09 7:05

Evgeni57

22-Aug-09 7:05

Hi,

When I do request from web browser my cookies look like this:

Cookies/Login:
        CLIENT_WIDTH_DIR=1276
	CLIENT_WIDTH_DIR=250
	CLIENT_WIDTH=250
	MAIN_WIDTH_DIR=1066
	MAIN_WIDTH_DIR=60
	MAIN_WIDTH=60
	PHPSESSID=cb49a7c6928e0cdd1892f2bdc0322173

But when I use the following code:

myHttpWebRequest.Headers.Add(HttpRequestHeader.Cookie, "CLIENT_WIDTH_DIR=1276");
myHttpWebRequest.Headers.Add(HttpRequestHeader.Cookie, "CLIENT_WIDTH_DIR=250");
myHttpWebRequest.Headers.Add(HttpRequestHeader.Cookie, "CLIENT_WIDTH=250");
myHttpWebRequest.Headers.Add(HttpRequestHeader.Cookie, "MAIN_WIDTH_DIR=1066");
myHttpWebRequest.Headers.Add(HttpRequestHeader.Cookie, "MAIN_WIDTH_DIR=60");
myHttpWebRequest.Headers.Add(HttpRequestHeader.Cookie, "MAIN_WIDTH=60");
myHttpWebRequest.Headers.Add(HttpRequestHeader.Cookie, "PHPSESSID=cb49a7c6928e0cdd1892f2bdc0322173");

the cookies look like:

CLIENT_WIDTH_DIR
     1276,CLIENT_WIDTH_DIR=250,CLIENT_WIDTH=250,MAIN_WIDTH_DIR=1066,MAIN_WIDTH_DIR=60,MAIN_WIDTH=60,PHPSESSID=cb49a7c6928e0cdd1892f2bdc0322173

2 lines, broken, instead of 7 and, of course, session id is wrong and nothing works.
How I can set the cookies right?

Thanks.

a c++ class library/dll in your c# project

Natural_Demon22-Aug-09 5:58

Re: a c++ class library/dll in your c# project

22-Aug-09 5:58

hi, i would like to have some help with the following.

i made a c++ class library and added this to my c# project.
i would like to store some data in this class and retrieve this data when needed.

this class compiles and i can find it in the c# bin folder of my project.

i have done a litle reading on the subject, but it's not very clear to me.

http://support.microsoft.com/kb/828736[^]
http://msdn.microsoft.com/en-us/library/ms235591.aspx[^]

as non universitary professional coder.
i have made some MFC experience in the visual studio 2003 era, but ....
: )
but i stil would like to know how it's done.

can any show me how it's done?

i have the following files in the c++ project.
Header Files
- authentication.h
- resource.h
- Stdafx.h

Source Files
- AssemblyInfo.cpp
- authentication.cpp
- Stdafx.cpp

containing of the authentication.C file

// This is the main DLL file.

#include "stdafx.h"

#include "authentication.h"

please show how to store/set from c# a value in that c++ dll and retrieve it back to c#.

kind regards and thank you for your time

Bad = knowing 2 much

Hristo-Bojilov22-Aug-09 6:25

Hristo-Bojilov

22-Aug-09 6:25

Is your c++ library COM or native library?
See the samples here for calling native libary from .NET and here using COM objects into managed code. Smile | :)

Life is a stage and we are all actors!

Re: a c++ class library/dll in your c# project

Natural_Demon22-Aug-09 6:32

Re: a c++ class library/dll in your c# project

22-Aug-09 6:32

i don't know, that'as why i ask.

i simply added a basic (not ATL, MFC or whatever) c++ class library project to my c# project.

Bad = knowing 2 much

Hristo-Bojilov22-Aug-09 6:59

Hristo-Bojilov

22-Aug-09 6:59

I suppose your library is native.Follow this link for quick and easy sample how to consume C/C++ code in C#. Smile | :)

Life is a stage and we are all actors!

Block parent form

Dominik Reichl22-Aug-09 4:21

22-Aug-09 4:21

Hello,

I've got a main form and a status form. The status form is displayed non-modally (Show method), and updated using Application.DoEvents() while working on a bigger job.

Now the problem is that the main form is not blocked while performing the job. Both the status form and the main form can be focused. What I'd like to have is that the main form is blocked and redirects the focus to the status form, just like it would be the case for modal dialogs. Is this possible?

I tried setting the Owner property of the status form to the main form, but it didn't have any effect. The ParentForm property is read only, and the Parent property only applies to standard controls, not forms...

Thanks and best regards
Dominik

PS: Moving the job to another thread isn't possible.

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Dominik Reichl22-Aug-09 6:18

22-Aug-09 6:18

I've now implemented the following: when the main form runs into the Activated event, I'm calling the Activate method of the status form.

This way the main form is somewhat blocked, but there's still the disadvantage that visually the main form still draws the controls as if they could get the focus (for example the main menu items are highlighted when hovering over them). If you know a way how to disable/solve this, please let me know.

Thanks and best regards
Dominik

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Natural_Demon22-Aug-09 6:19

22-Aug-09 6:19

can't you try to add a this.Click event to the form and captures the user's click and bring the focus the other form?

Bad = knowing 2 much

Dominik Reichl22-Aug-09 6:49

22-Aug-09 6:49

See above

Thanks for the reply anyway, best regards
Dominik

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Natural_Demon22-Aug-09 7:07

22-Aug-09 7:07

you can also use panels in the mainform, switch to a panel with the text 'please wait' and switch back after your other jobs finish.

Bad = knowing 2 much

Xmen Real 22-Aug-09 7:09

Xmen Real

22-Aug-09 7:09

this.Enabled = false;

will it work ?

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R0~53%eYrd8mt^7Z6]iTF+(EWfJ9zaK-iTV.C\y<pjxsg-b$f4ia>

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Dominik Reichl22-Aug-09 8:17

22-Aug-09 8:17

Yes, this prevents visual effects on hovering, but also grays out all dialog elements (which is actually good I guess).

Thanks and best regards
Dominik

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