Hi allI'm building a little windows form app in C#, MSVS 2005, .NET 2.0.5 where I have a form, and then a panel on the form, which changes if buttons on the form are clicked, or if an item is selected in the panel, and it works great with the first panel change, but on the second panel change,...

Requirements:Approximately 200 client machines will generate request messages at a rate of 1 message per minute.Each message should be relatively small 3-4 k max.These messages will be sent to a server machine to be processed. After the message is processed, a response message will be generated and...

Does anyone know if there is a way to conver a List<byte> into a string, and then convert that string back into a List<byte> later? It doesn't look like List<byte> supports GetBytes. I was thinking about putting all the elements into a string that is comma delimited and then r...

I'd like to check if the SelectedPath returned by FolderBrowserDialog is a root.<br/>Any suggestion how to achieve this ?

Is there any way of encrypting large texts? AFAIK, theres a AES encryption has some restrcitions encrypting really large data? It doesnt work...Or Iam getting it wrong..could you please post an example? <br/>Thanks,<br/>CT.

Below is the code, and in comments, the exact text of the spec that made me write it. Of concern to me is the way the spec goes woolly in steps d) and e) with phrases like "value obtained from D in a)" - do they mean the original D or the (processed D) which they earlier referred to as (D) in step...

HiI cannot resolve a problem with accessing the same array between 2 threads and a backgroundworker. Here is a sketch of code :class Result{public Result(int a,int b);public _a;public _b;}Result [] res ;bool bThread1=false;bool bThread2=false;ButtonClick(){ backgroundworker1.RunWorkAsync();}t1(){...

Ive created a Windows Installer to aid in the installation of my program, and I have added a License Agreement dialog to the order of dialogs the installer will go through when launched.This License dialog gets its license information from license.rtf which is placed in the application folder. Howev...

Suppose the icon map on http://www.google.com/ links a map file which I may know or not its file name.I want to run my program to download this map file and to save it to a client side that is like "C:\Map\...".How to modify the code?class TestUrl{ public static void Main() {...

It's a VPN client and the shortcut references a GUID/registry key/CLSID<br/>{c3a78f90-b4a7-12cd-b979-080a2b30b5eb} I've tried to find an application reference with regedit without success.<br/>How do you kill it when all you have is the GUID/registry key/CLSID?

:)

Hi All,I'm looking into developing a client side application that has server side communication, but will be run on a client machine as sort of a windows taskbar application. More specifically, a Notification Area application (in the area with the system clock/etc).Is there some sort of propert...

Hi ! I have a ListViewControl which is set to Multilineselect = false so only one row could be selected. I need to be able to change the selection by code. But I cannot find something like SelectedIndex and SelectedItems is readonly. So how to do that ? Thx in before....

Sorry if this sounds dumb, but is it possible to control or gain access to data in other applications? I'm not talking about making a macro type program that has predefined mouse movements and timings, but a program that can "tap" into another and access its data, or invoke some of its function...

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;namespace _D_game_01{ public partial class GForm : Form { Point BallLocation = new Point(10, 10); Size BallSize = new Size...

Hi,I'm searching for an appropriate way to construct an object model from an XML.The xml is given below and the code for parsing it is also given below..<?xml version="1.0"?><!-- A fragment of a book store inventory database --><bookstore xmlns:bk="urn:samples"> <book genr...

Hello best programmers,I'm actually from the C/C++ corner, so maybe I'll ask a stupid question about C#. Suppose I call a function/method and give a pointer as an argument, is this possible in C# (I've read something about 'ref') and is it a good programming technique in C#...

I`m working with .NET compact framework 1.1 unfortunatelly. Combobox does have event KeyPress, but it is not a design property. I suppose that th reason is that this event is "disabled" - so it never fires.Could anyone please help me - how could I capture an key press event on combobox? Anyhow...Tha...

Hello best programmers,I manged to get a socketconnection with another pc and I can receive data and read it. Now I want to call a function in the main when I receive data. I understand I need to use a delegate which encapsulates a a function (or a method) with the right signature...Because I'm...

I've written a program to write web pages for me. They're all similar, I just fill in the blanks. I have a button to open the file in Firefox to make sure it looks okay and that works the way I want; it doesn't start a new instance of FF, the currently running instance just creates a...

Hi,I can't get System.IO.Path.ChangeExtension to work. I've created a file, logon.log and placed it in the root of c:\. I just wanted to change the extension to a txt. Below you will find my code. There are no problems running the [System.IO.Path.ChangeExtension(@"C:\logon.log", ".txt"...

I have this 2-d array here and I need to get my program to add rows(which would be tests. I would like to be able to enter the amount of tests that i would like to output using the code i have(so if i only wanted test 1 i would enter 1 and so on) Does anyone know a good website that illistrates so...

I am new to C# and ASP.Net and I am running 1.1I have a datagrid that has an image button in the rows of a particular column. I want to make the button visible in some of the rows but not others based on a conditional statement.I can't seem to figure out how to check this and make the button h...

Object Serialization<br/>How to serialize/deserialize objects to/from "XML" files.<br/>How to store the data in a XML file using Object Serialization. Will anybody help me regarding this. i need this urgently.<br/>Will anybody please send the example of this.<br/>thank you.

Hi,Can i have a generic method for validating an array/arrays.and which fulfils the below mentioned criterias?1. The method should be capable of taking 'n' number of arrays.2.Array types could be string/datetime.3.Should basically check whether each incoming array is empty or not.4.Should...

//CodeIntPtr comObjPtr;SomeWinapiFunction(out comObjPtr); // Get a com object ptr.IUnknown obj = (IUnknown)Marshal.GetTypedObjectForIUnknown;(comObjPtr, typeof(IUnknown));//use obj.Marshal.ReleaseComObject(obj);My question is , do I need to call "Marshal.Release(comObjPtr)" ? I think "Marshal.Releas...

What is the best way to program a transparent overlay to draw on using OpenGL (using the CsGL library)? Activeborder for the Transparency key doesn't seem to work when working with OpenGL and the CsGL library. Any help would be greatly appreciated.

I have a port listener that listens to a particular UDP port which receives data from multiple sources, often at same or very close times. I think I may encounter a problem in that when two strings or more get to the port, the bytes are fragmented and jumbled together.Is there any way to "serialize"...

I need to make a program that can retrieve the width of lines and put it into a histogram. Same thing with the height of lines, but a seperate histogram. I've already looked into histograms and I know how to do those ( I'm using C# for that ). Its how to retrieve the width and height of al...

I need to override the GetHashCode base on this Equals Method:public bool Equals( MyClass myClass) { //check the length if( this.Count != myClass.Count ) { return false; } //iterate through all elements in dictionary...

Just started programming C# and I think I love it using VS 2005 standard edition.What is the difference between the blue-colored 'String', 'Double', etc and the more C++-looking 'string', 'double', etc ? They both seem to work interchangeably.What am I missin...

I've written a class that does complex arithmetic as a first serious attempt to use C#. To my surprise, it works very nicely. Yet it seems a bit awkward in that it appears that I need to include all the functions in my Complex class in another User class with the functions renamed with publi...

Wow. I built a little DLL library using C#. Now, how do I have another C# program access and use the library ? I understand the general idea. I really need a code example.<br/>Thanks.<br/>Mike :wave:

Hi,I have a datagridview which the user enter data (tex) to a cell. When the user enters the data and click on save, the data is not save to the property set. The grid column is databinded to an object property. However, to get the data to be saved via the property set method, I have to enter the da...

Can anyone please explain me in detail how C users can able to consume .Net dll for accessing its properties and methods?<br/>Reply at the earliest will be more helpful.<br/>Thanks<br/>Selva

The datagridview column is databinded to an object property,the datasource create a column which is always readonly,is there any method to edit the cells,one thing is we can draw the cell on that particular cell, but this is also not working.can anyone know how to edit the cells in datagridview eve...

Hi All, I have come up with a code to calculate CPU usage which uses WIN32 API's. Code works fine in the single processor system. If I run the code on the multiprocessor system, initially for 3 to 4 iterations it gives somewhat acceptable values but afterwards, it starts giving some negativ...

hello, i have an application made with System.Windows.Forms. It is a form that contains a treeview.Now, the app starts as a form in the middle of the screen. However, when I maximize the form, I need the treeview to scale to fit the new size, I mean in full screen, what method can i use for this?tha...

public void A()<br/>{<br/>}<br/>public void DoIt(this.A)<br/>{<br/>}<br/>can you do that?

Hi, I was playing around with web services and I noticed most tutorials say you should create a proxy class (.dll) out of the service.asmx?wsdl file. My question is what is the point? I'm using Visual Studio 2005, and when I create a new project to utilize that web service, I just add it as a w...

i want to have an "Options/Preferences" form that gets executed upon button click. now i made the form in it's own form file, and right now i can execute it with:Options options = new Options();options.Show();but the problem is that the user can switch between it and the main Form, how can i ma...

Hi guys,<br/>I am currently stored all the files and images into MS SQL database as image data. is that possible to restore them to physical files?<br/>Thanks

Hi everyone,I have to write a windows service which can track mouse right click events on system captions of other window applications (or in TaskBar), add own item and process this item click.Writing a service is not a problem for me. How could I track user's clicks on system captions and modi...

I wish to release pdbs for use with my release dlls with Windbg if a core dump occurs on my client.In my C# project properties in VS I see in the "Build" Tab I see and "Advanced" button, if I select this and then select the "Debug Info" pulldown and from the pulldown I select "pdb-only".Is this enou...

Hello!I am learning about WCF duplex services using these sites as learning guide- http://msdn2.microsoft.com/en-us/library/ms731184.aspx- http://msdn2.microsoft.com/en-us/library/ms752216.aspx- (and some other stuff found on google, msdn,...)I made a small change in the client implementation. I cre...

I have a log-in window application. When the user presses the cancel button it kills another window by it's name and then it exits. The problem is that if somebody kills the log-in window by terminating the process in the task manager the other window is not killed.One solution might be to have...

Most the examples I see of doing .NET io either use syncronous blocking IO and the programmer handles the threads, or he uses async io (nonblocking?) and I suspect .NET does the threading in the background.. But are these the best ways, really? The java.nio package did away with blocking IO entirely...

Hi,I got 3 tabpage containing separate datagridview controls. One of grid is loaded upon init. When I switch to the 2nd tab and request data and binded it to the empty grid, the grid will fill with 4 rows. I switch back to the initially loaded tab control grid, which contains about 20 rows. I get an...

Hi guys,<br/>I am using asynchronous sockets on the server side. Every socket operation is asynchronous. How do I detect if a client closed the connection? I can't find any event for that<br/>thanks

I found it in the following code, can someone clarify where i get a chart of these escape chars or what they are? Or clarify on the subject? lines:if (args.ControlText.Length > 0 && args.ControlText[0] == '\x0F') if (args.ControlText.Length > 0 && args.ControlText[0] == '\x13&...