C#

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Dynamically Generating Data for a Waveform Graph Control Matthew Alan Gray15-Dec-02 16:27 Matthew Alan Gray 15-Dec-02 16:27  I am currently developing a waveform graph control, and I am having difficulty in dynamically displaying multiple plots. Basically, I want to display anywhere from one to an undetermined number of plots on a single graph; I could use arrays to do this, but there would be difficulty resizing the arrays if I set the size of the arrays too low, and there would be wasted resources if I set the size of the array to high... What I need is an efficient way to add, update, and remove structures representing plot data that can be easily and efficiently resized -- is there a straightforward way to do this in C#?? Matthew Alan Gray, B.S.C.E. Graduate Student, Mississippi State University mag2@ece.msstate.edu same COM object? peterchen15-Dec-02 10:00 peterchen 15-Dec-02 10:00  And another one... COM rules state that to check if two interfaces point to the same COM object, QI both interfaces for IUnknown directly, and compare the results. How do I do that in C#? If I could find a souvenir / just to prove the world was here   [sighist] Re: same COM object? Rama Krishna Vavilala15-Dec-02 16:52 Rama Krishna Vavilala 15-Dec-02 16:52  Equals() method takes care of that for you or == operator. The mistakes made in this API make me realise that Microsoft has become big enough that it can shelter morons. If anyone working for me wrote anything this bad and tried to release it, I would kill them and display the body as a warning to the rest of the team. - Christian Graus about C# - GDI+ ArrayList == vector and list ? peterchen15-Dec-02 9:59 peterchen 15-Dec-02 9:59  Hi, Is ArrayList a "reasonable" replacement for both vector and list? It feels a bit weird, but the best I could find in the System.Collecitons namespace. TIA Peter If I could find a souvenir / just to prove the world was here   [sighist] Re: ArrayList == vector and list ? Nick Parker15-Dec-02 16:55 Nick Parker 15-Dec-02 16:55  peterchen wrote: Is ArrayList a "reasonable" replacement for both vector and list? I believe it is for MS, however others weren't so pleased for one reason or another so there have been some "additions". All in C#: Doubly-Linked List Implementation[^] Add Support for "Set" Collections to .NET[^] Nick Parker You see the Standards change. - Fellow co-worker Re: ArrayList == vector and list ? Barry Lapthorn15-Dec-02 20:15 Barry Lapthorn 15-Dec-02 20:15  Just watch out, as by default it does a shallow copy. And of course you have to cast it back to the type you're looking for Regards Barry Looking for a free FTP class library for .NET gicio15-Dec-02 5:49 gicio 15-Dec-02 5:49  HI! Is there an free FTP class library for .NET available? OR an open source project that write a FTP class? gicio Re: Looking for a free FTP class library for .NET leppie15-Dec-02 6:14 leppie 15-Dec-02 6:14  You know you could have saved yourself alot of time by just doing a search here on CP or on GotDotNet, instead you go and cross post in 3 different forums WebBoxes - Yet another collapsable control, but it relies on a "graphics server" for dynamic pretty rounded corners, cool arrows and unlimited font support. Debugger anomaly Paul Silvernail15-Dec-02 5:25 Paul Silvernail 15-Dec-02 5:25  This is a first !!!! After working on my final project for school late last night, I woke to find the debugger gremlins had come. When I try to debug my project (F5) MS VC# hangs. The task manager show a process for my app was created, but the app never shows up as a task. I tried deleting the debug directory and doing a rebuild, no luck! If I execute without the debugger (ctrl+F5), either in release or debug build, the app runs. Sounds like a real world release nightmare If anyone has ideas, please please let me know. Thanks, Paul Re: Debugger anomaly leppie15-Dec-02 5:34 leppie 15-Dec-02 5:34  Paul Silvernail wrote: I tried deleting the debug directory and doing a rebuild, no luck! Delete all them directories, and try again. I found that seems to work. A reboot is sometimes required. WebBoxes - Yet another collapsable control, but it relies on a "graphics server" for dynamic pretty rounded corners, cool arrows and unlimited font support. Re: Debugger anomaly Paul Silvernail15-Dec-02 5:53 Paul Silvernail 15-Dec-02 5:53  Thanks leppie! Needed to reboot too, but all is well. Paul Re: Debugger anomaly leppie15-Dec-02 6:12 leppie 15-Dec-02 6:12  On a bad day I have been known to re-install XP up to 5 times Just wish VS.NET's install didnt take so long. WebBoxes - Yet another collapsable control, but it relies on a "graphics server" for dynamic pretty rounded corners, cool arrows and unlimited font support. caspol.exe and sn.exe realted? imran_rafique15-Dec-02 2:28 imran_rafique 15-Dec-02 2:28  i am using code Access security police tool (caspol.exe). when i execute this command caspol -machine -addfulltrust WinService1.exe then the following message display on command prompt. ----------------------------------------------------------------- Microsoft (R) .NET Framework CasPol 1.0.3705.0 Copyright (C) Microsoft Corporation 1998-2001. All rights reserved. ERROR: This assembly is not strong name signed Usage: caspol <args> ... caspol -af caspol -addfulltrust <assembly_name> Add full trust assembly to policy level ------------------------------------------------------------------ i know that strong name tool(sn.exe). but i could not understand which options and arguments i have to use in order to remove the following error ----------------------------------------------- ERROR: This assembly is not strong name signed ----------------------------------------------- can any body tell the command with correct option and arguments ? i will be very thank full to to you. r00d0034@yahoo.com Re: caspol.exe and sn.exe realted? James T. Johnson15-Dec-02 2:49 James T. Johnson 15-Dec-02 2:49  First get to the same directory your source code is located in then use the sn tool like so sn -k mykey.snk Now find the AssemblyInfo.cs or .h/.cpp file and find where it says In C#: [assembly:KeyFile("")] In C++: [assembly:KeyFileAttribute("")] Change the values of each to point to the mykey.snk file. In C#: [assembly:KeyFile(@"..\..\mykey.snk")] In C++: [assembly:KeyFileAttribute("mykey.snk")] Now you should have a strongly named assembly. The down side is that you need to do this to all assemblies your code references (excluding the ones that come with .NET). Good Luck, James "The elastic retreat rings the close of play as the last wave uncovers the newfangled way. But your new shoes are worn at the heels and your suntan does rapidly peel and your wise men don't know how it feels to be thick as a brick." "Thick as a Brick" from Thick as a Brick, Jethro Tull 1972 Re: caspol.exe and sn.exe realted? imran_rafique15-Dec-02 9:44 imran_rafique 15-Dec-02 9:44  its not working for vc++.net and managed code my code is not working after using these lines although c# code is working but the problem is with vc++.net managed code. ---------------------------------------- sn -k mykey.snk [assembly:KeyFileAttribute("mykey.snk")] ----------------------------------------- is there any other step to perform pls tell ? r00d0034@yahoo.com Re: caspol.exe and sn.exe realted? James T. Johnson15-Dec-02 12:30 James T. Johnson 15-Dec-02 12:30  imran_rafique wrote: its not working for vc++.net and managed code By not working do you mean it isn't compiling? I assume that is the case because I forgot that the actual attribute name is [assembly:AssemblyKeyFileAttribute("mykey.snk")]; I forgot the Assembly portion of the name James "The elastic retreat rings the close of play as the last wave uncovers the newfangled way. But your new shoes are worn at the heels and your suntan does rapidly peel and your wise men don't know how it feels to be thick as a brick." "Thick as a Brick" from Thick as a Brick, Jethro Tull 1972 Problem with Image saving Smitha Nishant14-Dec-02 19:21 Smitha Nishant 14-Dec-02 19:21  Friends, I am trying to save the image in a picturebox to a file. It returns a gdi+ error This is what I do : tmpfileloc= apppath + "temp_make.jpg"; FileStream fs= new FileStream(tmpfileloc,FileMode.OpenOrCreate,FileAccess.Write); Image tmpimg= pictureBox1.Image; tmpimg.Save(fs,ImageFormat.Jpeg); fs.Close(); And the error I am getting is this : An unhandled exception of type 'System.Runtime.InteropServices.ExternalException' occurred in system.drawing.dll Additional information: A generic error occurred in GDI+. Whats wrong ? Tweety If you can smile when things go wrong, you have someone in mind to blame Re: Problem with Image saving leppie14-Dec-02 19:31 leppie 14-Dec-02 19:31  The only thing I can think of that perhaps the image format is not 24bppRGB. Maybe the stream need to have read rights as well or you perhaps dont have write access to the disk. Hope this helps WebBoxes - Yet another collapsable control, but it relies on a "graphics server" for dynamic pretty rounded corners, cool arrows and unlimited font support. Re: Problem with Image saving Smitha Nishant14-Dec-02 19:46 Smitha Nishant 14-Dec-02 19:46  Hi Leppie, Thanks for the prompt reply. I am loading the image into the picturebox from a JPG file in my desktop. And the program does create a 0 byte file, when I try to save it. Then it crashes. Specifying the fileaccess as FileAccess.ReadWrite doesn't stop the error. What is 24bppRGB format ? Tweety If you can smile when things go wrong, you have someone in mind to blame Re: Problem with Image saving Smitha Nishant14-Dec-02 21:30 Smitha Nishant 14-Dec-02 21:30  leppie wrote: The only thing I can think of that perhaps the image format is not 24bppRGB. The way I was loading the picture into the picturebox was not perfect. I think that corrupted the image format. I fixed the issue. Thanks. Tweety If you can smile when things go wrong, you have someone in mind to blame Web Controls vs HTML controls JoeMcK14-Dec-02 15:14 JoeMcK 14-Dec-02 15:14  Why don't my web controls (e.g. buttons) display in my browser when I run? If I use an HTML button, it shows up fine. Both appear to be server side controls (both have runat="server". What's the difference between Web Form controls and HTML controls? Joe Re: Web Controls vs HTML controls leppie14-Dec-02 20:47 leppie 14-Dec-02 20:47  JoeMcK wrote: Why don't my web controls (e.g. buttons) display in my browser when I run? From who are you running? There can be many reasons, be a bit more specific. Maybe you are not running fast enough WebControls are server-side controls that normally will do some processing where HTML controls are basically literal controls. Both have a runat=server attribute, although its not required for HTML controls, but they are there so a literal control can "controlled" referenced from the server-side. You might want to post further ASP.NET questions in the ASP.NET forum (yes we have one). WebBoxes - Yet another collapsable control, but it relies on a "graphics server" for dynamic pretty rounded corners, cool arrows and unlimited font support. Re: Web Controls vs HTML controls JoeMcK15-Dec-02 9:18 JoeMcK 15-Dec-02 9:18  I've been trying to keep my samples as simple as possible...create a new project (web app). On the grid that's displayed, drop a web form button onto the grid from the toolbox...compile, then execute and the button doesn't show. Only labels show up. I have a feeling it's something silly that I'm just not aware of. It's been frustrating to track down why I don't see what I expect. When I drop an HTML button (from the toolbox) onto the grid, it shows up when I execute. Joe What kind of control should I use? Paul Silvernail14-Dec-02 12:40 Paul Silvernail 14-Dec-02 12:40  I was hoping to have a listview control in details view, where each column was bound to a data source. When the user clicked in a box (grid lines on obviously) a drop down box filled with the bound data should appear. Does anyone know if such a control exist . Maybe point me to an article detailing the procedure. Thanks in advance, Paul Re: What kind of control should I use? leppie14-Dec-02 12:51 leppie 14-Dec-02 12:51  I think you can do that with the datagrid, but to be honest I hate that thing. Either here (on CP) or on GotDotNet there should be a sample. WebBoxes - Yet another collapsable control, but it relies on a "graphics server" for dynamic pretty rounded corners, cool arrows and unlimited font support.

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