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Re: TreeView Gary Kirkham2-Jun-05 12:33 Gary Kirkham 2-Jun-05 12:33  Thanks...I had looked through the same documentation...I was hoping that there was some "trick" that would let me do it (like trapping a message in WndProc, for example). There are things I dislike about .Net. This would be so easy if .Net would allow me to set the Nodes property. Then I could supply a reference to a collection derived from the TreeNodeCollection class. I could then implement whatever events I wanted. I guess that allowing me to do that might create other problems if not implemented properly. Gary Kirkham Forever Forgiven and Alive in the Spirit He is no fool who gives what he cannot keep to gain what he cannot lose. - Jim Elliot Me blog, You read Re: TreeView Christian Graus2-Jun-05 12:42 Christian Graus 2-Jun-05 12:42  Gary Kirkham wrote: (like trapping a message in WndProc, for example). Hmmm.... that could work. I mean, it has to be creating a windows tree at the end of the day, right ? And I'm sure THEY had an event for adding/removing. I guess the thing is, you add and remove through code, right ? So perhaps they expect you to know when you do. Maybe if you override the tree class and override methods to add and remove items, and specify your own event ? Or can a tree view have items added to it through other means ? Gary Kirkham wrote: There are things I dislike about .Net. Number one for me is that, unlike MFC, there's no source code provided. Christian Graus - Microsoft MVP - C++ Re: TreeView Luis Alonso Ramos2-Jun-05 13:00 Luis Alonso Ramos 2-Jun-05 13:00  Christian Graus wrote: Number one for me is that, unlike MFC, there's no source code provided. Actually there is!! .NET Reflector[^] -- LuisR Luis Alonso Ramos Intelectix - Chihuahua, Mexico Not much here: My CP Blog! Re: TreeView Christian Graus2-Jun-05 13:03 Christian Graus 2-Jun-05 13:03  Wow - that's really neat !!! Christian Graus - Microsoft MVP - C++ Re: TreeView Luis Alonso Ramos2-Jun-05 13:22 Luis Alonso Ramos 2-Jun-05 13:22  Christian Graus wrote: Wow - that's really neat ! So, you didn't really know about it? That tool has saved my life so many times! Whenever you have a little problem with the framework (and third-party assemblies), use it to check what's going on under the hood... and in VB.NET C# code. Enjoy!! -- LuisR Luis Alonso Ramos Intelectix - Chihuahua, Mexico Not much here: My CP Blog! Re: TreeView Christian Graus2-Jun-05 13:25 Christian Graus 2-Jun-05 13:25  Luis Alonso Ramos wrote: So, you didn't really know about it? I obviously knew it was possible, and even considered that it probably existed, but I've never seen it before. Knowing in theory is not as cool as seeing it pop up on the screen Christian Graus - Microsoft MVP - C++ What happens when the user leaves? Sled Dog2-Jun-05 7:14 Sled Dog 2-Jun-05 7:14  Wow 2 questions in 1 day... How do you fire off a "clean up" function if a user simply closes the browser? I have a customized cache that I would like to flush before they are gone. (This is not the built in cache object of .NET) The INPROC is set in my web.config and I have code in the Session_End portion of my Global.asax file. However, I have determined through debugging that I am hitting the Session_Start, but not the Session_End. Thank you. William Re: What happens when the user leaves? Dave Kreskowiak2-Jun-05 9:31 Dave Kreskowiak 2-Jun-05 9:31  There is no event on the server that says the user closed the browser. The only thing you can do is wait for the user's session to timeout, which, by default, I think, is 20 minutes. Then your Session_End code gets kicked off, if it's still running under the debugger. You might even catch the Session_End event being kicked off when you start your app under the debugger again. It might kick off first thing before the new Session_Start event is fired. RageInTheMachine9532 "...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome Re: What happens when the user leaves? Anonymous2-Jun-05 12:31 Anonymous 2-Jun-05 12:31  Thanks Rage. The knowledge is helpful. BTW, 2Bad Rage is gone. Will-Keep-Listening-Anyway Re: What happens when the user leaves? Dave Kreskowiak2-Jun-05 16:06 Dave Kreskowiak 2-Jun-05 16:06  Nope. Rage is not gone. Rage shows up everytime I go to work... RageInTheMachine9532 "...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome Interoperability when using Microsoft UIP Sridhar Subramanian2-Jun-05 6:53 Sridhar Subramanian 2-Jun-05 6:53  Hi, i had used "Microsoft.ApplicationBlocks.UIProcess.dll" in my C# form and i generated type library for that and tried to open it in a VB application. I'm able to open C# application from VB6 but when i invoke an event(C# form) which instantiate UIP process, it's throwing error. Any idea y it occurs, i can send the code if u need it -Sridhar my URL is messed up Sled Dog2-Jun-05 6:31 Sled Dog 2-Jun-05 6:31  Recently, I was programming and my url changed...it has RANDOM characters in it. I don't know how or why it occurred. Has any one see this? Normally, my url for a project would be http://localhost/MyProject/index.aspx Now, it looks like this http://localhost/MyProject/(bi4dw4bxvmy2l345vfuixouc)/index.aspx If I could remember what I had change in my project, I would change it back:< Will-B-Confused (help) Thanks for any suggestions in advance... Re: my URL is messed up TridentWhite2-Jun-05 6:53 TridentWhite 2-Jun-05 6:53  It looks you have changed the web.config file to use cookieless sessions. The extra information is the SessionID. If you want to go back, go into your web.config file and look for sessionState. Change cookieless="true" to cookieless="false". That should get rid of the extra characters. Happiness is knowing that somewhere out there, there is a bullet with your name on it. Re: my URL is messed up Sled Dog2-Jun-05 6:58 Sled Dog 2-Jun-05 6:58  John, while I must confess you have a scary outlook on life, I am most appreciative of your excellent answer before your bullet arrived. Thank you. Willliam the big Chaos..... DasdaDAS2-Jun-05 5:46 DasdaDAS 2-Jun-05 5:46  Can any one explain when to use abstract class and when to use interface? Or under which scenario we should use abstract class and interface..... Zxczc Re: the big Chaos..... S. Senthil Kumar2-Jun-05 5:57 S. Senthil Kumar 2-Jun-05 5:57  Generally, abstract classes are used when you have some implementation in the base class, which calls virtual methods that can be overridden in derived classes. Interfaces can't have implementation, so they can't be used there. Also, interfaces can be used to express "can also be" kind of relationship. For eg, you can have a concrete class deriving from an abstract class and implementing IDisposable, so your class "can be" disposed. Also, there are versioning issues. You can add additional virtual methods to abstract classes without breaking existing clients, you can't do that with interfaces. Regards Senthil _____________________________ My Blog | My Articles | WinMacro Re: the big Chaos..... Paul Lyons2-Jun-05 7:00 Paul Lyons 2-Jun-05 7:00  Awesome answer/explaination! Paul Lyons, CCPL Certified Code Project Lurker Re: the big Chaos..... Daniel Turini2-Jun-05 6:37 Daniel Turini 2-Jun-05 6:37  Also, to add to the excellent Kumar answer, I'd add that formally, you should use an abstract class when the concrete class you'll implement is an specialization of the abstract one (aka "is a" relationship). When you define an interface, you often model an specific behavior (aka "-able" suffix: IDisposable, IClonable, IMovable, IComparable, IFormattable). I see dead pixels Yes, even I am blogging now! Re: the big Chaos..... Roger Alsing3-Jun-05 1:41 Roger Alsing 3-Jun-05 1:41  and INativeWindowable (ok ok, I do agree with the above, but as always , there are scenarios when interfaces are used in the "is a" kind of way) //Roger Re: the big Chaos..... DasdaDAS3-Jun-05 2:51 DasdaDAS 3-Jun-05 2:51  Great.. Zxczc Filling a datagrid BECK72-Jun-05 5:30 BECK7 2-Jun-05 5:30  Hi, I am trying to fill a datagrid in ASP.NET, but i cant. What i need is to put some values on the datagrid, but the values are not coming from a database, i just need to set a fixed values. For example, i get the names of the columns(Name, Style) and i get the information of both columns:(John, Xtreme),(Paul, Overload). How do i set this information on a datagrid. Thank u very much for ur help Re: Filling a datagrid Christian Graus2-Jun-05 10:27 Christian Graus 2-Jun-05 10:27  You can create a datatable in memory, there are plenty of examples on this. You can also databind to an array if you want to. Christian Graus - Microsoft MVP - C++ getting accurate lastLogon Anonymous2-Jun-05 4:32 Anonymous 2-Jun-05 4:32  I am trying to find the accurate lastLogon for a user. I know that lastLogon is not replicated, so is possible to loop thru all the domain controllers in the domain without having to explicitly identifying each (by name)? An example in C# would be great. thanks rick Text and Images in C# ListView Md Saleem Navalur2-Jun-05 3:54 Md Saleem Navalur 2-Jun-05 3:54  Hi, I need to insert text and images together in a subitem in a listvew in C#. The images and the text can be in any position and any order in the subitem. The images need not be only at the start position of the subitem. If any one has this kind of control do let know. Any help will be great. Thanx Saleem Enumerating Running Applications in C# Abdul Aleem Khan2-Jun-05 2:58 Abdul Aleem Khan 2-Jun-05 2:58  Hello, I am doing a small application similar to the Windows Task Manager. In the Windows Task manager the first tab 'Applications' displays all the running applications in the system. I tried two ways to get running applications but each of my method had problems. No.1 I got All the running processes Process [] procs = System.Diagnostics.GetProcesses(); foreach(Process p in procs) { // I can get Handle and Title of the Main Window // of each process and can // display it. someVariable = p.MainWindowHandle; someVariable = p.MainWindowTitle; } Though the above method works fine for most processes, but for the processes like Explorer.exe or Winword.exe this method fails. Explorer.exe is running as a single process but have multiple Top-level windows associated with them. Similarly Winword.exe is only one process even if you have multiple word documents opened. In these cases p.MainWindowTitle only gives me title for one window. No.2 I also tried to Enumerate All thread Windows for each thread in every process through Win32 EnumThreadWindows(), then I checked each returned window using the GetParent() to check that if the application does not have a parent or owner then it is a Top-Level window and should be displayed in Task Manager. But in this case I get too many windows. I even get the Windows TaskBar window and a lot of other windows which are not actually applications (Windows Task Manager do not display them). I even tried EnumWindows() and EnumDesktopWindows() but with similar results and getting too many extra windows which are Top-Level windows but are not applications. Now, I guess that the Windows Task Manager gets this information about the running applications directly from the Windows Shell, but I dont know which shell interfaces will give me this information. Can Anyone tell me how I can Enumerate the Running Applications exactly which are displayed in the Windows task manager. How I can do this in C# or in Win32 or any related Shell Interfaces. How I can Enumerate All running Applications. Thanx

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