Hello, I've read conflicting posts about [MethodImpl(MethodImplOptions.Synchronized)]. Does it or does it not lock the entire object? In my simple test it appears to block just the method but I wouldn't exactly call my meager test conclusive... thanks, Scott ...more >>

Hi, If I have the code line "DateTime d1 = DateTime.Now;" and look at d1 in the watch window, I thought I'd only see the properties of the DateTime object variable d1. However I seem to be seeing lots of other properties and objects - can anyone explain what these are and where they c...more >>

Hi, This may sound simple, here is my problem. I have a couple classes, Class1, Class2, Class3. Class1 has a collection of Class2 and Class3. Right now those collections are defined as ArrayLists. This is a problem because when you reference them eg: Class1.Class2s[index] you just get a...more >>

pardon my ignorance as I am a self-taught hobbyist programmer. I am curious after reading up on SharpZipLib. Can I embed a zipped txt file in my program? Then either read from within the zip file or unzip and read it? I currently have an embedded text file that contains a list that is rea...more >>

Hi Gurus, In C# why struct can't be inherited from another struct, just like a class can be inherited from another class? another question is all struct by default are inherited from System.Object class, how this is possible when it is not allowed to derive a struct from a class? and System.Obje...more >>

Hi All, How apply Session[""] to .ascx files? Thx. ...more >>

Hi, I want to parse a string char by char... This is the I do it with VB For i=1 To Len(strCadena) strResultado = Replace(strResultado,Mid(strCadena),1) Next i TIA...more >>

Hi, I am using Asynchronously Delegates,and I wonder Can I call EndInvoke to end the processing before THE Asynchronously action ended? Thanks. ...more >>

This doubt is regarding synchronisation question in Singleton pattern code of C# I had created a class as public sealed class SecuriteManager { private static volatile SecurityManager instance; private static object syncRoot = new Object(); private SecurityManager() { } ...more >>

Hello Group, I am trying retreive a string with error information from the RASAPI using C#. Currently I am always getting blank string returned from the call to RasGetErrorString, even though the command returns success indicating success. From the msdn doco the RasGetErrorString API (v...more >>

Hello. I need to include help to a C# Windows Application. How do I start in Visual Studio 2003? Regards, Diego F. ...more >>

I come from the land of Java and C++** where it is relatively easy to create a pool of threads, send them off to a task, then call the join method and await all of their completion. However, I cannot for the life of me figure out how to get this relatively simple concept working in .net - spe...more >>

I've read a basic tutorial on delegates but am still unclear about them. Can someone explain what the point of using them is. I don't completely understand them yet nor the reason for their use. Thanks...more >>

I hate to be a newbie but I am trying to write an C# web application with multiple Web Forms. Once a user selects a row from a datagrid, the primary key is passed to the next window and so on. The sqlConnections on all the windows point to a SQL 2000 Test database. How do I go about creating...more >>

Hi all, I wrote some generator of classes from XSD files but encountred = unexpected (for me) values in parsed DOM. First I load XSD with XmlSchema.Read() method, then iterate through = XmlSchemaElements. I have a function IsComplex() which return bool value if it has simple content (e.g. typ...more >>

How do you go about calling a constructor in the same class from another constructor? (see below) - Roger ie. public class1() { Does some general initialization } public class1(string Thing1) { /// Call class1() for general initialization /// set a property to Thing1 } ...more >>

Is there any way to specify some other XML file for this command? This is my case: I'm planning to use a program that generates an XML documentation file FOR VB6 projects in pretty the same way VS does. (The program is VBDOX). But I need to transform that xml information in HTML format, ideal...more >>

Hi all, I have written some code that invokes a method a few hundred times and then it immediately finishes. I would like it to instead: 1. start the hundreds of threads (asynchronously) 2. Then block until all threads have finished executing Currently I have something like the following: ...more >>

I have a ListBox built of a simple custom object for the ListItems used to be able to hold a Data Value, and a Display Value, with accessors for each. I have overridden the ToString method to display the Display value. (Two examples that I have seen, including an MS example, suggest ...more >>

We have this huge application that's based on storing tons of data on a dataTable. The only problem we're having is that storing LOTS of data (1 million records) into a datatable will slow down the system since all this data will be stored in memory. The performance is really affected with this. ...more >>

and how to fix it ?...more >>

I have developed a PHP web service that runs on a linux machine. I have also developed a windows forms client to the web service in C#. The only problem that I'm having is that the data that I send to the web service is too large. For one, the server denies any post greater than 8 MB. It also...more >>

Assume that this is running on a multiprocessor machine and multiple threads are invoking both methods of the class below. Since I lock access to the _value member, there should be no reason for me to mark _value as volitle. Though, by marking it as volatile i will know that the program never ...more >>

How can i test if a certain font is installed? Thanks. ...more >>

I want inherit a new Groupbox , that is resizeable by the user with the mouse at runtime What I have to do ?? Peter ...more >>

hi again, If i create ex. an array with the "new()" operator - am i responsible for cleaning it up again just like in C++ ? ive seen examples where no cleanup is done, and ive seen examples where people set the pointer's to NULL - but ? Thanks. ...more >>

Some small things about ico make me very confused. I want give my winform app a new icon. I designed it but visual studio insisted to use the default one. Isn't the icon's format 32 x 32? 2nd, I try to display a small icon for my app at taskbar like the following codes: ...more >>

Alright, as much as I've done CSharp, I've done very little with databases with it. So I'm just kind of messing around with, learning how it works. I am using the ADO.NET adapter provided with MySQL in a very simple web application. I have the connection, data adapter, and typed datasets create...more >>

Hi, I don't know how I can search in a dataset. I can trace the table by DataRow and foreach loop. but you may know a better way. I have a datagrid and a textbox. when user type a string in textbox, I need to search in datagird and change the current record to the found record. thanks ...more >>

Hello everyone, does somebody knows how I can extract Bitmaps from a Powerpoint file (one per slide)? I found some ressources which opens Powerpoint as application and controls it programmatically. But I am looking for a way to do this without the help of Powerpoint itself. Would I need a kind...more >>

Is there a way in C# to get the DNS records for a domain? - Roger ...more >>

Hi, I have an two classes derived from ICommand interface for example SubscribeCommand,and RetryCommand i want to do the following ICommand command1=new SubscribeCommand() ICommand command2=new RetryCommand() Now i want to Serialize both command1 and command2 to a string is ...more >>

I create HtmlInputRadionButton objects dynamically in codebihind. The buttons have the same name. Now I need the value of the checked button. Is there a way to get this? Thanks for help! Fabian ...more >>

Hi There! How do I manipulate folders in Outlook Express (Not Outlook)? I need to read messages in the mail folders as well as newsgroups. I've search on the net but all I found is how to send mails using Outlook Express. But what I need is to read messages :P Please provide some pointers...more >>

Hi Why can't i assign the following value to a integer constant? private const int WM_KEYDOWN = &H100 ; the error message i am getting is C:\Dev\Cls.cs(99): The name 'H100' does not exist in the class or namespace 'MyDLL.MyClass' Regards Darryn ...more >>

I am using (trying) dynamic properties to store a database connection. However, I don't have a connection object on the form. I just do a OdbcConnection in my code. So I can't use the VS IDE to set up my Dynamic Properties. Can I still use Dynamic Properties? Or am I required to set up obje...more >>

Hi There! How do I manipulate folders in Outlook Express (Not Outlook)? I need to read messages in the mail folders as well as newsgroups. I've search on the net but all I found is how to send mails using Outlook Express. But what I need is to read messages :P Please provide some pointe...more >>

Hi. How to write to network share located on another computer from windows service? Service runs under LocalService account. Thanx. ...more >>

Hi, I'm trying to update a sql database from a web form using text boxes. I'm trying to learn C# on my own so I am at a complete loss. I created my sql connection, data adapter, dataset and data view in the visual studio designer. I'm trying to keep a history of the record so instead of editi...more >>

I want to include ManagementObjectSearcher class in my code. According to MSND I need to add using System.Management to my C# file. But I dont have a Management name space in system. I'm using VS.NET2003 with Framework 1.1. What namespace am I suppose to use to get the use ManagementObjec...more >>

this writes the dataset to a file --> ds.WriteXmlSchema("c:\\mySchema.xsd"); how do i instead write it to the winform, say in a text box? then once its on the screen i want the user to be able to click saveas and everything in the textbox can get written to a xsd file. how do i do that? ...more >>

Hello everyone, let me explain the situation. We have an old application written in C++ (embedded visual c), and I wrote a new component for it (communication component with a custom protocol) in .NET. Now we need to make the program and the component work together, which of course is a proble...more >>

hy to all, I'm accessing a function from a managed-c++-dll within my c#-application. Therefore I encountered following troubles: In my c#-app I have got a byte[]-array, which should somehow be mapped to a char* in my managed-c++-function. Here is the prototype: ---------------------- managed...more >>

Dear Group Gurus, If I use a COM class in my C# code, will the memory used by COM object be garbage collected, or do I have to manually collect it. Thanks, John ...more >>

hi, i have a form linked to a microsoft SQl Server db (a Hospital System), i have bind the controls on the form, i have written the update command, created navigation buttons,i have included form validation so that user inputs the must fields, now when i run the application its runs properly b...more >>

Hi, I'm extending a serializable class I made. The new class adds some features that cannot be serialized automatically, this means that I have to implement the ISerializable interface for my new class. What happens is that I do serialize what I have written within the GetObjectData method, bu...more >>

Has anyone seen a link yet to the DAAB 3? I'm told it's posted _somewhere_ ...more >>

Hi, I have a solution that includes a deployment project. The solution contains a database file (access). Now I'd like to exclude the database and only deploy an updated version of the other files - so far so good. Hence, all the old files, except the database, should be written over and re...more >>

hi, Im new to C# - ive have my background in c/c++ - and somethings are abit new to me, so havent really gotten the total feel of the laguage yet. I have a situation which i really have no idea to solve in c# - what i do, is that i have a MAIN form, which subsequently calls several other for...more >>

Does anyone know of a way to loop through all components of a certain type in a form. Not all of the components are within the same container. They actually are on separate tab pages. Thanks. ...more >>

Hi, I am wondering how i can "1,000.00" displayed in a windows label instead of "1000.00" double i = 1000.00 string str = i.ToString("F2") i understand that the code above will display "1000.00" in the windows label but i need to show "1,000.00" is there a way of formatting this to be d...more >>

I am trying to build a mail client similar to OE for gmail.... Basically I have everything working, but I need some help / suggestions for my Message Grid. I don't think I want to use the .net DataGrid, but not sure what other good options there are. Any suggestions? ...more >>

hi I have an exe on a server, how can I configure this to access certain files/resources on client machines which connect to the server using Code Access Security in an intranet. I will be knowing the machines /users who will be needing this thanks...more >>

Is it possible to show some movement in the screen while copying a file? I tried to use a timer that change the position of an image but when I start the copy of a file from diskette all is stopped until the copy finishes. Any ideas? Thank you ...more >>

Hello, According to my C# book, I can add a .resx file to my project by going to the Project menu, Add New/Assembly Resource File... I want to add 6 icon files, one.ico, two.ico...six.ico. I got as far as adding the Resource1.resx file. I now see a table like thing with the titlel "D...more >>

Hi NG, if there a way to Clear a DataGrid dataGrid1.TableStyles.Clear(); or dataGrid1.TableStyles.Remove(tblStyle); or dataGrid1.TableStyles.RemoveAt(intDG); or not work!? dataGrid1.TableStyles[0].GridColumnStyles.RemoveAt(0); this work fine but i need to remove the rows an after r...more >>

I know it violates alot of design rules but is it possible to have an ADO.NET database query in a constructor? As cheesy as that sounds, it may simplify an otherwise very complex design in a remodel project. thx. -greg ...more >>

I heard a tool named any2icon. What's your favorite? ...more >>

hello, i'm using a dataview to filter my table. how can i get a index (for the original table) of the selected rows (there can be more than 1). please help...more >>

Hi, I know already this is a really stupid question but how do you obtain a handle to an application or a window in C#. Formerly I used Application.Handle in Delphi so I'm looking for the equivalent in C# TIA kim...more >>

I defined some functions in one .cs file, i.e. ShowHelp(). Now I need use them in my other cs files. How to do that? This is a WinForm application. Thanks. ...more >>

I want write a method to send several strings to a webpage using Response.Redirect (I'm trying to find out why my website keeps crashing). If I write a method to do this I can obviously only do a redirect once before the code in the method will finish executing. How can do this? Would I ne...more >>

I use the following method to read a file: static byte[] ReadFile(string path) { FileStream stream = new FileStream(path, FileMode.Open); BinaryReader reader = new BinaryReader(stream); byte[] result = reader.ReadBytes((int)stream.Length); reader.Close(); return result...more >>

Hello! I want to read a large text file (100 mb) and from with in the file i want to take out some lines on a spesific kriteria and make new files. eks. inputfile: 123 hello.. 123 more... 124 text.. 125 text outputfiles 123.txt: 123 hello.. 123 more.. 125.txt: text ca...more >>

Someone here wrote that MS has dropped its commitment to DIME (see link below). I could not find any other info on this from googling around. Has MS made this public anywhere? Links would be appreaciated. And, if DIME is to be dropped, what will be used instead for file attachments with SOAP?...more >>

Please help me, add a button to a new for and copy and paste the simple code below. According to me, the last message box in the Click event of the button should popup a "123" but instead it pops up a "0". Why?? Is this a bug?? Thank you. ---------------- CODE TO COPY ---------------- publ...more >>

Hi All, I am going to use C#.Net to write an application which can let the user to design work flow diagrams within the application. So I think I have to acquire and employ some flow chart controls. Do any those of you have such valuable experience in doing the similar task? Any referal for...more >>