Re: TreeView Multiple Column Microsoft Control - C# Discussion Boards

Re: Are these hard C# interview questions? Really??

PIEBALDconsult2-Oct-09 13:17

2-Oct-09 13:17

Some of that is like asking a race car driver what compound his tires are made of or the viscosity of his oil. Sure, some may know it, but it won't be an indication of how well he can drive. Plus, some may memorize the answers in order to make up for a deficiency of driving skill.

First, see if the candidate can drive, then try to determine the depth of his knowledge.

1) A fairly pointless question. Object, but I never think about its members, I only override them when necessary -- so at most I might say ToString.

2) Not too bad a question. I use delegates, but I don't recall ever using Invoke or BeginInvoke on them. If you want to ask about synchronous/asynchronous, then just ask.

3) I certainly couldn't fill two minutes with that, because I just don't need to know, that's the whole point of the GC.

4) Polymorphism is a good topic, but pondering some of Microsoft's decisions is best left to others. Unsure | :~

5) Right, they're not, but there's nothing I can do about it; all I can do is make my classes thread-safe -- when needed.

Re: Are these hard C# interview questions? Really??

ewan2-Oct-09 14:00

ewan

2-Oct-09 14:00

PIEBALDconsult wrote:
1) A fairly pointless question. Object, but I never think about its members, I only override them when necessary -- so at most I might say ToString.

Hehe - ok ok. This is clearly a very divisive question! Despite the howls of protest around this so far I still like this as a question. Maybe I'm just evil.... Wink | ;)

PIEBALDconsult wrote:
2) Not too bad a question. I use delegates, but I don't recall ever using Invoke or BeginInvoke on them. If you want to ask about synchronous/asynchronous, then just ask.

I agree we could ask directly something along the lines of how would you run a delegate asynchronously but really its just the same question posed another way. I suspect you have used Invoke even if you don't realise it Smile | :)

PIEBALDconsult wrote:
3) I certainly couldn't fill two minutes with that, because I just don't need to know, that's the whole point of the GC.

I think this is an interesting statement. Maybe you are right and its why so many people struggle with it. I naturally assumed that since I have been asked this at every .NET interview this was a totally standard question. Maybe its specific though to the industry I'm in and the type of application we are generally developing where memory and cpu time are at a premium. Food for thought for me.

PIEBALDconsult wrote:
5) Right, they're not, but there's nothing I can do about it; all I can do is make my classes thread-safe -- when needed.

But the point is you know - a hell of a lot of candidates don't!

Re: Are these hard C# interview questions? Really??

Mycroft Holmes2-Oct-09 15:18

Mycroft Holmes

2-Oct-09 15:18

ewan wrote:
Maybe its specific though to the industry

I'm curious, what is the industry you are in.

Never underestimate the power of human stupidity
RAH

Re: Are these hard C# interview questions? Really??

darkelv2-Oct-09 15:36

darkelv

2-Oct-09 15:36

Agree. A fairly large UK bank here been doing the phone question for screening. After a while the candidates know what are the questions to be asked and look for standard answers. Sometimes the job agents even give the candidates the answers. Wink | ;)

Using WCF to implement Named Pipes

AndyASPVB2-Oct-09 10:05

AndyASPVB

2-Oct-09 10:05

Hi

I would like to use WCF to implement a named pipe, and what I would like to do is to implement it on a similar basis as you would a normal web service, i.e. using [servicecontract], configuring the app.config file, etc. Scouring the internet I can't seem to find a good example that does just that and the one found in: http://www.omegacoder.com/?p=101 is not the solution I am looking for.

Does anyone have a good example I could follow?

Thanks

TreeView Multiple Column Microsoft Control

LimitedAtonement2-Oct-09 9:05

LimitedAtonement

2-Oct-09 9:05

Dear Sirs,

So if the last hour or two has served me properly, there is no standard multi-column treeview control offered by Microsoft like the one at
Advanced TreeView for .NET by Andrey Gliznetsov,
right? (which by the way seems to be an excellent piece of work. I've just started looking at it and it looks well-written).

Does this seem crazy to anyone else? They have obviously developed probably dozens of them (the locals window, for instance, where when perusing a class, you see the class and members' names on the left, each potentially expandable, and their value and type ond the right -- or the stinkin Windows Explorer of Win95, right? with filename on left and details on right)!! This blows me away! It should be a standard, out-of-the-box control! I worked on one with Java recently, and I'm remaking my projects in C# and thought to myself, "Surely I won't have to deal with that crap again, I'm in Microsoft land where they take care of everything you want FOR you ... and so much more," but no.

Anyway, if I'm misinformed and there's some property on the Treeview control that is like Collection(TreeViewColumn) Columns or something, let me know, but until then, I'll muddle through somehow.

Thanks for listening, it means a lot.

In Christ,
Aaron Laws

Re: TreeView Multiple Column Microsoft Control

Dave Kreskowiak2-Oct-09 9:16

Dave Kreskowiak

2-Oct-09 9:16

LimitedAtonement wrote:
Does this seem crazy to anyone else?

Crazy, no. Vaguely disappointing, yes. But, all for the better if I can find a contorl that exactly matches my needs instead of one that only approximates what I need.

LimitedAtonement wrote:
I'm in Microsoft land where they take care of everything you want FOR you ... and so much more,"

Which bloody idiot told you that?

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008
But no longer in 2009...

Re: TreeView Multiple Column Microsoft Control

DaveyM692-Oct-09 10:38

DaveyM69

2-Oct-09 10:38

Dave Kreskowiak wrote:
Which bloody idiot told you that?

Dave

Generic BackgroundWorker - My latest article!
BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
Why are you using VB6? Do you hate yourself? (Christian Graus)

Re: TreeView Multiple Column Microsoft Control

LimitedAtonement5-Oct-09 5:56

LimitedAtonement

5-Oct-09 5:56

Dear Mr. Kreskowaik,

I think the control that I described shouldn't be one that would be much different from implementation to implementation. To me, it would be like saying, ``the ListView is useless: it only approximates my needs,'' or something like that, when really it's plenty generic enough to meet my needs just fine in every circumstance (if I have to finagle my classes to fit into it sometimes). That to say, I would much rather Microsoft give me an in-box multicolumn treeview control which would be MUCH easier to do the finagling rather than creating a whole new one! Oh well, I'll keep working on the one from the website.

In Christ,
Aaron Laws

Dave Kreskowiak wrote:
But, all for the better if I can find a contorl that exactly matches my needs instead of one that only approximates what I need.

Re: TreeView Multiple Column Microsoft Control

Dave Kreskowiak5-Oct-09 12:55

Dave Kreskowiak

5-Oct-09 12:55

LimitedAtonement wrote:
the ListView is useless: it only approximates my needs,''

I didn't say that. I said that I would rather find a 3rd party control that comes as close as possible to my needs and not rely on Microsofts implementation which only generally does what I need. You use the correct tool in the draw for the job at hand. If you want to go through all the pain of hanging additional functionality on a general MS control, more power to you. But, I'll use the one that is already pretty close if not dead on to what I need without spending the extra money on developing my own. Trust me, I do that enough already. When it costs me, say, $395 to get a control that does what I need, why should I spend 100 hours at, say, $40 an hour ($4,000) developing a control to do the same thing?

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008
But no longer in 2009...

Re: TreeView Multiple Column Microsoft Control

Mycroft Holmes2-Oct-09 15:23

Mycroft Holmes

2-Oct-09 15:23

LimitedAtonement wrote:
I'm in Microsoft land

You're giving them (MS) delusions of competence, you are going to have to buy or roll your own. Infragistics do a nice one but their object model is a little overwhelming.

Never underestimate the power of human stupidity
RAH

Reroute an Application's Network Traffic

Zaegra2-Oct-09 6:04

Zaegra

2-Oct-09 6:04

Hello,

I'd like to know if it's possible to "wrap" a running process, and get all it's Outgoing network traffic? E.g when I'm playing a game, trap its network traffic and send it to a different server? Blush | :O

PS: This is not used for any form of hacking.

Thanks in advance,
Zaegra

Motivation is the key to software development.

Re: Reroute an Application's Network Traffic

Saksida Bojan2-Oct-09 6:38

Saksida Bojan

2-Oct-09 6:38

for redirecting it is possible if it doesn't use direct IP accsess
C:\WINDOWS\system32\drivers\etc

inside there is a file named host (Without extension).
You can redirect a specific DNS name to specific IP
If you type www.google.com it will automatlcly go to 209.85.129.147, because it is on DNS server.
If you put in host file
127.0.0.1 www.google.com
and then you save that file.
After that all links that try to use www.google.com will look only on your machine. (127.0.0.1 is localhost)

For monitoring look at Packet Monitor C#[^]

Re: Reroute an Application's Network Traffic

Zaegra2-Oct-09 7:01

Zaegra

2-Oct-09 7:01

Thanks! I will try this Big Grin | :-D

Motivation is the key to software development.

Handling WM_GETMINMAXINFO to prevent borderless forms overlapping taskbar when maximized

WebMaster2-Oct-09 4:58

WebMaster

2-Oct-09 4:58

How can I do it? I have a custom borderless form that I want to not overlap the taskbar when maximized, and I was told that it is possibly to prevent that through the use of WM_GETMINMAXINFO + WndProc. Is it really possible, and if so, how?

Thanks.

Re: Handling WM_GETMINMAXINFO to prevent borderless forms overlapping taskbar when maximized

Saksida Bojan2-Oct-09 5:30

Saksida Bojan

2-Oct-09 5:30

Are you coding in C#?
As i see your question, it shoud belong into c/c++/mfc board

Re: Handling WM_GETMINMAXINFO to prevent borderless forms overlapping taskbar when maximized

WebMaster2-Oct-09 5:45

WebMaster

2-Oct-09 5:45

Yes, I'm very much coding in C#.

Re: Handling WM_GETMINMAXINFO to prevent borderless forms overlapping taskbar when maximized

Saksida Bojan2-Oct-09 6:28

Saksida Bojan

2-Oct-09 6:28

I would do this whay:

this.FormBorderStyle = FormBorderStyle.Sizable; // Set the borders
this.WindowState = FormWindowState.Maximized; // Maximize so that it occupies worker area
this.MaximumSize = this.Size; // Set maximum size of Form while it has borders
this.FormBorderStyle = FormBorderStyle.None; // Removes borders and the MaximumSize prevents covering taskbar

This whay it can be seen with a border with less than a second. If you want to avoid and get the screen size, you need to use PInvoke of SystemParametersInfo with Constant SPI_GETWORKERAREA
and you could get the size of worker area. Also there can be problems when you have AutoHide enabled for taskbar. If you have then i suggest using PInvoke to constantly monitor changes when it apears or dissapears

Re: Handling WM_GETMINMAXINFO to prevent borderless forms overlapping taskbar when maximized

WebMaster2-Oct-09 6:46

WebMaster

2-Oct-09 6:46

> PInvoke to constantly monitor changes when it apears or dissapears

Please elabroate on that one. Smile | :)

Re: Handling WM_GETMINMAXINFO to prevent borderless forms overlapping taskbar when maximized

Saksida Bojan2-Oct-09 7:06

Saksida Bojan

2-Oct-09 7:06

http://www.codenewsgroups.net/group/microsoft.public.vb.general.discussion/topic17919.aspx[^]

This link shows how to get Worker Area through API (VB.NET)
You coud put that checking into a thread, so that if worker area is changed then you coud force to redraw with larger working area

Here is another link[^]

Re: Handling WM_GETMINMAXINFO to prevent borderless forms overlapping taskbar when maximized

WebMaster2-Oct-09 20:59

WebMaster

2-Oct-09 20:59

Sorry, but those didn't really help me.
Any ideas on WM_GETMINMAXINFO?

Re: Handling WM_GETMINMAXINFO to prevent borderless forms overlapping taskbar when maximized

Saksida Bojan2-Oct-09 22:19

Saksida Bojan

2-Oct-09 22:19

protected override void WndProc(ref Message m)<br />
{<br />
if (m.Msg == 36) // This code is for WM_GETMINMAXINFO<br />
{<br />
// Do Something<br />
}<br />
base.WndProc(ref m);<br />
}

this is from sdk:
The WM_GETMINMAXINFO message is sent to a window when the size or position of the window is about to change. An application can use this message to override the window's default maximized size and position, or its default minimum or maximum tracking size.

A window receives this message through its WindowProc function.

You can also look into events as ResizeBegin and Move. Althou when i have overriden WndProc, my Form didn't open

Why it didn't help. I have tested and my taskbar wasn't hidden.

Re: Handling WM_GETMINMAXINFO to prevent borderless forms overlapping taskbar when maximized

WebMaster3-Oct-09 1:01

WebMaster

3-Oct-09 1:01

Hmm, I probably did it wrong then. Can you show me your code?

Re: Handling WM_GETMINMAXINFO to prevent borderless forms overlapping taskbar when maximized

Saksida Bojan3-Oct-09 1:49

Saksida Bojan

3-Oct-09 1:49

this.FormBorderStyle = FormBorderStyle.Sizable; // Set the borders
this.WindowState = FormWindowState.Maximized; // Maximize so that it occupies worker area
this.MaximumSize = this.Size; // Set maximum size of Form while it has borders
this.FormBorderStyle = FormBorderStyle.None; // Removes borders and the MaximumSize prevents covering taskbar

I used this code in on load event. When i set the form Maximum size, even if you maximize it won't go beyond MaximumSize property

Re: Handling WM_GETMINMAXINFO to prevent borderless forms overlapping taskbar when maximized

WebMaster3-Oct-09 4:34

WebMaster

3-Oct-09 4:34

Thanks, that worked. Love you Laugh | :laugh:

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