C# Discussion Boards - CodeProject

Re: How to Plug in TortoiseSVN in VS2005 both C# and C++

8-Jan-09 2:10

Hi Currently i am doing the SVN commit and SVN update of TortoiseSVN in directory folder alone. Instead of doing this. how to do same thing in VS2005 IDE.

Please help

Gopal

Colin Angus Mackay8-Jan-09 2:23

Colin Angus Mackay

8-Jan-09 2:23

Gopal_Kanchana wrote:
how to do same thing in VS2005 IDE.

You need VisualSVN[^] which is a plug in for Visual Studio.

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Can I call Paint event from reguler events to make changes through GDI.

Naveed7278-Jan-09 1:32

Naveed727

8-Jan-09 1:32

I am going to create a custom control and want to add an ability. When it get focused then It appearance should change through GDI.

for example I am creating custom label.
Then how will i get my target.

Problem is that I am only able to change the object at Paint event, here I can make changes to my object through GDI but I want When my object get focus or it is being clicked then I want to make changes via GDI.

Any hint will be appreciated.

Re: Can I call Paint event from reguler events to make changes through GDI.

musefan8-Jan-09 2:05

Why C# doesn't have macro like C++

8-Jan-09 2:05

can you not just invalidate the control when you handle other events such as click?

userControl1.Invalidate();

this will cause the control to repaint itself, in which it will call the Paint event

Gopal_Kanchana8-Jan-09 0:53

8-Jan-09 0:53

is it C# support macro like c++? if not Why ? is it any standard they are following.
In C++ we can do MUL(X,Y) X*Y like this.

DaveyM698-Jan-09 0:57

DaveyM69

8-Jan-09 0:57

See this MSDN blog[^]

Dave
BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
Visual Basic is not used by normal people so we're not covering it here. (Uncyclopedia)

Gopal_Kanchana8-Jan-09 1:13

8-Jan-09 1:13

Thanks. this is a exact link.

Lev Danielyan8-Jan-09 1:10

Lev Danielyan

8-Jan-09 1:10

These are different languages, with different features, that's it.
This question is kinda like a holywar starter Smile | :)

Regards,
Lev

Gopal_Kanchana8-Jan-09 1:12

8-Jan-09 1:12

Thanks for your reply

#realJSOP8-Jan-09 1:12

8-Jan-09 1:12

0) Just because you *can* do something in C++, doesn't mean you should.

1) Macros can be used to circumvent the strong typing requirements of C++. Side effects are possible, and that's bad.

2) Macros cannot be debugged.

Macros that contain code are evil and should be avoided whenever possible.

"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997
-----
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Jon Rista8-Jan-09 7:04

Jon Rista

8-Jan-09 7:04

Have to agree on all points. Macros are about the most evil feature C/C++ have to offer. The looong, late, sleepless nights dealing with macro expansion bugs...what a night terror.

All I can say is, THANK GOD C# doesn't have macros!! Big Grin | :-D

Windows Service Gotcha [modified]

Dave Doknjas9-Jan-09 15:11

Dave Doknjas

9-Jan-09 15:11

Using macros, you can redesign your coding 'language' on the fly until your code doesn't even remotely look like C++. If you've seen as much bad C++ as I have, you know why many consider macros evil.

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#realJSOP7-Jan-09 23:56

Re: Windows Service Gotcha

7-Jan-09 23:56

This is not a question, but is too short to be an article. Learn from my mistake.

Yesterday, I was testing a windows service I wrote using Visual Studio 2008 on a Windows 2000 machine. I had originally targeted .Net 3.5 when I created the project, and had to re-target the assemblies to 2.0 before installing it on the target machine. When I installed it, the event log would say that the service started successfully, but a few seconds later, I would get an error event - an invalid operation exception.

I removed EVERYTHING from the service except a keep-alive thread so it would keep running once installed, and it still threw the exception.

Thinking it might e a flaw in VS2008 when changing from .Net 3.5 to .Net 2.0, I tried creating an entirely new solution targeting .Net 2.0 from the start. It still threw the exception. And then I had an epiphany.

The installer class sets the name of the service. One thing that all windows services do (when you create them with the VS2008 template) is calls the InitializeComponent() method. I had always deleted this call in prior services I had written since it seemed like a pointless thing to do, but this time, I had left the call in. In InitializeComponent, it tries to set the service name to "Service1". This is NOT the name I gave it in the installer object. After changing the name to the same thing I used in the Installer object, it worked just fine - no exceptions.

When I changed the name of the service.cs file, I guess it missed that string in the re-factoring process. I spent four hours on this problem. BTW, the other fix for this would have been to NOT call InitializeComponent.

[EDIT] BTW, I had tested this service on my own Vista box, and it worked fine. While I was waiting for access to the Win2K box, I figured I'd fix the Service name (because it was showing up as "Service1" in the event log). I re-factored and compiled, but did not re-test it before trying it on the Win2K box (I figured the re-factor would have done what it was supposed to do). The lesson here? ALWAYS RE-TEST, NO MATTER HOW MINOR THE CHANGE IS PERCEIVED TO BE. This is proof that even the programmers with 30 years in the industry make the most rookie kind of mistakes every once in a while.

modified on Thursday, January 8, 2009 7:25 AM

EliottA8-Jan-09 2:34

EliottA

8-Jan-09 2:34

John Simmons / outlaw programmer wrote:
This is proof that even the programmers with 30 years in the industry make the most rookie kind of mistakes every once in a while.

Ha. Rookie Laugh | :laugh:

Re: Windows Service Gotcha

Le centriste8-Jan-09 3:28

Le centriste

8-Jan-09 3:28

John Simmons / outlaw programmer wrote:
but is too short to be an article.

Regarding the current quality of the majority of articles, you probably would get a 5.

Re: Windows Service Gotcha

PIEBALDconsult8-Jan-09 12:40

PIEBALDconsult

8-Jan-09 12:40

"It takes a big man to ~~cry~~ admit a mistake, and it takes an even bigger man to laugh at that man." -- Jack Handey

I don't think I've created a new Service with VS2008 yet, but I hope to remember that if I do.
And I'll likely remove the InitializeComponent.

C# Forms Panel Scrolling

musefan7-Jan-09 23:53

7-Jan-09 23:53

Hi All,

I have a panel in a windows form(C# .Net 3.5) and this panel contains a varying number of usercontrols.

When there are more controls than visible in the panel I get the vertical scroll bar as desired.

My issue is that when scrolling and the controls are redrawn there is a noticible delay and causes a very unsightly display.

Does anybody have an ideas for solving this issue?

I have tried setting the smallchange and largechange values for the vertical scroll and this seems to be a solution, the only problem is that it only seems to apply when the up/down arrow buttons are clicked and NOT when I click and drag the scroll bar.

If anyone knows of a way to apply this small change value for dragging the scrollbar, I think this will be a suitable approach to take.

Thanks in advance

#realJSOP7-Jan-09 23:57

7-Jan-09 23:57

Did you set doublebuffering on?

musefan8-Jan-09 0:00

8-Jan-09 0:00

Yes i have set it for both the main form hosting the panel and for the usercontrols.

There is no noticible difference between having double buffering on or off.
I have left it set to be on.

#realJSOP8-Jan-09 0:15

8-Jan-09 0:15

Here's a usability hint - scrolling controls on a form is a *bad* thing (in terms of usability). My advice is to either create a wizard form, or implement tabs.

musefan8-Jan-09 0:33

8-Jan-09 0:33

I appriciate that and if the controls where different then i would take a different approach. In fact i have many tabs in parts of the application, in addition to one form which work like a wizard

But the controls in question are all instances of the same type, and they are used as a list of entries. Similar to having a list box or a datagridview with a number of rows.

The reason the usercontrol was created is to display the information in a custom layout with colors and buttons to match the general style of the application.

So im afraid having a scrolling panel is a must have. Esp considering just one control may be larger than the panel, as the usercontrol can grow based on content.