I am trying to use C# for my program that deals with manipulation of trees (i.e. finding distance between different nodes, assigning labels to nodes, storing trees, etc.). I know I can probably use a multi-dimensional array as my data structure. However, I wanted to find out if C# had any bui...more >>

How does the GetHashCode() of an array object behave? Does it combine the GetHashCode() of its elements, or does it create a sync block for the object? I want to use readonly arrays as dictionary keys, based on their content, not their identity. Is this feasible using the arrays directly, o...more >>

I have a dll that takes a byte pointer. Similar to this: writeDataToBuffer(byte *buffer, int *BufferSize); The buffer is allocated by the dll. I have no problem with the BufferSize parameter it is the buffer parameter that I am not sure of the best way to handle. What is the recommended ...more >>

is there any limit to how long of a string SqlDataReader.GetString() can return? ...more >>

I am porting some VB6 code that automates navigation through a web page by getting all the <a> tags into a collection and then calling the Click method on the appropriate one. How do I click a link in a web page using the WebBrowser control in VS 2005 C# Express and .NET 2.0? ...more >>

I have a FileSystemWatcher watching a directory where I will add and update files. When it detects a change, I search through all the files and update my list of files in the UI. This works fine. Now, my other application that is writing the files that are being watched, does something li...more >>

Hi, I have currently developped a small test app for remoting, it currently works great if the firewall is turned off. how do i deal with firewalls ? i currently am using onecare on my dev machine and the server will be local and the client will be remote how do i go though the firewall ? ...more >>

c# string size limit? length of string limit? ...more >>

I've just seen some code that uses the=20 using [alias] =3D [namespace] formular. Does this have any effect on the compiled code, or is it just = a feature to save the programmers fingers from long namespaces? --=20 #####-----#####-----##### POV Tips and Hints at ... http://povman.blog...more >>

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Hey all. I currently have two seperate namespaces and I'm trying to pass a connection around to them. I want to use the same connection & leave it open for 6 methods & then close it. However, all 6 of those methods use that same connection. So my solution was to pass the SqlConnection as a p...more >>

For ASP.NET UserControls , is it possible to provide multiple overrides of the intrinsic handler methods (those for which the delegate that wires the event to the handler is built-in , such as Init , Load , PreRender , Render ) ... ? I need to create various .ascx controls on-the-fly , call...more >>

I'd like a variable to be created once and called statically from anywhere in the app. Is the following sufficient or will multiple instances still be created: private static SqlConnection Conn = new SqlConnection(); Is it necessary to create the above as a private field, use a property an...more >>

So I see from the documentation here: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfSystemCollectionsArrayListClassBinarySearchTopic.asp That the code uses the less than operator: int myIndex=myList.BinarySearch( myObject ); if ( myIndex < 0 ) ...more >>

Let me first state that I'm a new C# (ASP.NET) developer, spending the last 8 years with ASP and having attended 2 fairly basic ASP.NET courses, so my knowledge is a dangerous case of "I know how to do that in ASP, so it must be possible in ASP.NET" Here's what I want to do, which oddly is not...more >>

Hello All, I am new to ASP.Net and would like to know how to place the results from a stored procedure that I call into another form within my project. Currently, I can see my results in my grid that I bind to, but have not a clue how to write the results into the (practice.aspx) ...more >>

Hello, I'd like to improve several critical routines involving arrays (vectors and matrices)... How are arrays stored in memory? Row major or column major? (Like in C or like Fortran?) Thank you in advance...more >>

I am about to develop a plan for porting our codebase from vc++/MFC to vs 2005 -- eventually, we would like to end up with the majority of the codebase in c#. But I guess initially we'll be moving to c++/clr (using :oldSyntax?). Just looking for advice/comments/reference material and whether ...more >>

If my GDI+ code is in the onpaint code for the window, there is no flicker. But if I put the same code in the onpaint event for a large panel, it does flicker. Why would this be? ...more >>

If I've got a video/audio file, how can I tell what Codec it needs? I want to be able to let the user upload a file to a server but I want to make sure before hand that the codec is already installed on the machine. If not I'll tell them it won't work. Any ideas how to do this? (I don't ...more >>

My apoligies if this has been posted already or is already known about. Using reflection to invoke the constructor of an object, assigning the constructed object to a member of type object, and then later trying to upcast that member to the appropriate type throws an invalidcastexception. Ha...more >>

I have created a Table on the fly with embedded textboxes. I need to update a database based on the input to these textboxes. What's the best approach? Sample of setup; Table table = new Table(); table.CellPadding = 5; table.ID = "Results"; cell = new TableCell(); TextBox tb = new TextBo...more >>

I'm creating a C# application, and want to use docking windows. However, I want the docking windows to look like the docking windows withing VS2005, with a title bar, close button, etc... When the user clicks and drags the docking window, it'll un-dock, and open in a tool window, and ...more >>

I have a DBA that wrote a stored procedure that does a SELECT from a particluar SQL Server table. Within that stored procedure he links over to grab a column from another database table. I need to display this information in 5 different label controls in an ASP.NET web page. When I test the st...more >>

Hey guys, I need to compare two times that the user selects. The user selects the hour, date, and timezone (which can be either NY, LN, or HK timezones). How can I compare two dates of different timezones? For example: Date1 = 11:30, 4/18/06, NY Date2 = 16:30, 4/18/06, LN These times sh...more >>

I have following code that validates a given user credentails against a active directory. The login part works but I can not search as it fails to return the record. Does any one have any idea what is wrong? public void Login(string user, string pwd, string domain) { ...more >>

Does Java have anything equivalent to the .NET base class libraries? Or is Java mostly "just another OOP language". My motivation for the question: just trying to understand why the .NET version of the Pet Shop required thousands FEWER lines of code than the Java version. See the 2nd chart ...more >>

Hello, I want to use this C++ method in C#: int doSomething(MyStruct*** structArray); MyStruct is a struct and MyStruct *** is a pointer to an array of pointer of my structs. How can I use that in C#? I have the struct definded in C# but this doesn't work: [DllImport("MyDll.dll")]...more >>

I have an application where I create a Plink process to communicate with an HP Unix box. The problem I am having is that while reading the redirected output, it seems to try to continue past the end and gets caught in an endless loop. I am checking for the end of the output like this: while...more >>

I want to return a list of every sp that is called by a given sp, and sp_depends is anything but... The user will have to supply the name of the first/top level SP and then my app will do the rest from there. My question: Will the following expression always work. I have tested it and it...more >>

The LostFocus event of datagrids is fired when the focus is added to a cell. How do you go about detecting it when the control as a whole has lost focus to another control? Slightly confused by this! Greg. ...more >>

Hi, Please can anyone kindly offer some suggestions as to why the CurrencyManager might not refresh. I am using the CurrencyManager to navigate through a DataView. I am aware that there is an issue when adding a new record with using bound CheckBoxes ('http://support.microsoft.com/defau...more >>

Hi all, Is it possibe to create a string in a jscript code and pass it has a argument to a c# function... a separate user defined project?if so how to do this? thanks in advance, hema ...more >>

I know that going from 512M to 1GB of RAM will generally benefit system speed, especially when running ram-hungry compilers, etc. Just curious if the additional jump up to 1.5GB will offer any advantage, or if it's overkill. This is presuming that there is little else running except for VS2005...more >>

Hi, Is there any namespace/class in C# to get the system configuration details such as RAM size, HDD capacity, processor details and things like that. I went through the ManagementObject class, but that uses specific names/labels to get specific property. I couldn't find any way to read th...more >>

Hi Group, In my application there is a very common functionality, where two list box and present and items are moved between them on button clicks when selected, This I am doing client side, Client side code is like this -> function assignInspector(listboxAllFieldEngineers,listBoxAssign...more >>

Hi... I am new in .NET and C#. I have such a problem: I connect to the SQL Server over Web Services and send a request. Another user must see this command (my request) and do somtehing and send me an asnwer back. The problem is: This process can last a few minutes (The other user can send ...more >>

Hi all, Can anyone tell me how to find out the memory used by a DataTable at runtime? I am appending lot of data to datatable at runtime.I have to measure this memory comsumption programatically... Plz help me... Thanx in advance... Jacob... ...more >>

How can i write on specifyed sector on a multimedia card? I must go round file system and write/read direct. C# VS2003 Thanks Kruno ...more >>

Hi Can anyone tell me if there is a class in C# similar to the class std::map in C++? I need a way to map enum to double and was hoping to avoid using any "if" code Thanks Torben ...more >>

Is there other way of comparing two byte arrays than iterating through the two and compare individual bytes ? Oleg Subachev ...more >>

How to automaticly add a new int number into table? I use a column ItemInx wich is Int32. ...more >>

Hi I have written a wrapper that encapsulates the Excel object model. As anyone who's done a similar thing knows, its important to release the objects when the app exits otherwise they still remain as a running process within windows. I've done this and so long as the code is called, it ...more >>

Good morning, Here is the objective: monitoring the CPU usage of a given thread in my own C# application. Here is what I do: - on a Form I put a PerformanceCounter - I set e CategoryName = Thread - I set the CounterName = % Processor time - I set the Machine = . (local machine) Then ...more >>

Hi, is there anyone here with exprience in p# (a prolog interpreter for .NET). ...more >>