Hello ! First excuse me for my not very well English ! My question is : Can I use WebServices from WindowsForms Application ? Application will run in LAN and WebServices will be on the local server... If I can do this - can you tell me some guide-lines ? Thank you ! ...more >>

When I trace through a csharp program I came to a situation where a certain values has an "undefined value" as shown in the debugger DbgClr. I want to check this but the following statements did not recognize this "non"-value if (type.Particle != Undefined.Value) { .... or if (type.Part...more >>

Hi! I've created a webform with a dropdown to which I've added some static items. I'm adding some extra items in my code. I'd like to sort the items after I've finished adding my new items. Can someone provide an example of how to do this? Thanks in advance for your help. Morten ...more >>

I've been making programs in c# from a few month, but I still don't fully understand what are ASP.NET and ADO.NET. I know that they run on the framework, that ASP.NET is necessary to build Web Applications and ADO.NET deals with databases, but I would like to know something more about them. ...more >>

If I don't want to map the drive, can I access the network share by a given login and password. Thank you....more >>

Hi, If I have code like int i = 10; string s = "Number is " + i.ToString(); FxCop wants me to put an IFormatProvider to ToString(). If I have: int i = 10; string s = "Number is " + i; What is going on there? ToString() must be called implicitly, right? So what IFormatProvider is bei...more >>

Hi, I've got a base/super class with just a default constructor. I want another constructor, but I can't modify the base class, so I created a sub class with a constructor like so: public class MySub:MyBase { public MySub(string val):base() { base.public1="String"; ...more >>

what is the difference between FCL and BCL? ...more >>

Hi all, I would like to get people's opinion about executing SQL statements in C# (or any other .NET language really). I used to create my SQL statement by building a string and replacing single quote with two single quotes. Sometimes, I used SqlParameter. Maybe, I'm a bit lazy when I build th...more >>

Hi, What books or periodicals to follow to keep abreast with latest in .Net. Apologies for throwing a non-tech stuff. Cheers, Akhil ...more >>

I have a windows service that spawns multiple threads running a thing that does a bunch of processing. Here's the code that spawns the threads: m_totalThreads=Convert.ToInt32(Settings.GetSetting("ProcessorThreads")); m_executingThreads=new Thread[m_totalThreads]; for (int i=0;i < m_totalT...more >>

greetings I need to develop an aplication that needs a database. The application is small and the use of SQL Server is not a choice. Can anyone give me hists about *free* database engines with ado.net support? TIA Lum...more >>

I've written a Windows service which uses some code I want to share with a WinForms app. The code works fine if it is included in the service project. If I move the code into a new project in the solution, then the service fails as soon as the method that uses the new assembly is entered. The ...more >>

I'm writing simulator to help with testing out problems with deadlocking on a database. I have a function which I call from a delegate BeginInvoke call, and depending on the simulation I might have from three to 20 threads running. here's the function... void DoTest() { for(int jj=0...more >>

Is it possible to install DotNet Framework 1.1 and the newest 2.0 beta 1 together on the same system? Depending on which Framework I would like to use for the next command line compilation I would prepend the valid environment directory (e.g. C:\WINNT\Microsoft.NET\Framework\v1.1.4322;) to the ...more >>

I basically have 3 .cpp files and 3 .h files, in a visual studio project. Is there anyway to compile this into an assembly? Or do I have to write a wrapper in C#? Or do I convert to code to C#? the files are not that large and have functions like: void CBlowFish::Decrypt(SBlock& block) wha...more >>

Is there an easy way to calculate the number of bytes that a UTF8 encoded string will occupy within a file in advance of writing? I am writing records to a complex file. These records contain variable length strings and I need to be able to work out in advance whether to overwrite the old rec...more >>

Using C#, I need to change the summary and description of a file. These are the properties that are visible in Windows explorer when the user right clicks on the file an choose properties tab. How can this be done in C#? -- Thanks, Gilgamesh ...more >>

I am writing a win form application in C#, I want to be able to retrieve web pages using different useragent strings and render the results in a web browser to see how my app responds to different browsers. I can retrieve the page and render the results fine. The problem I am having is changing...more >>

Hi group, I'm having a strange problem with event handling. My project has a form with a textbox that creates 25 instances of class A when a button is clicked. Class A raises the event without error, I have proved this by having it use a streamwriter to create and write to a simple text file a...more >>

When I try to compile a source code which should normally run I got this error message error CS0246: The type or namespace name 'XmlSchemaSet' could not be found (are you missing a using directive or an assembly reference Platform SDK 1.1 is successfuly installed (under Win2000...more >>

Hey all, I wrote a Windows Service. When I test it on my developement machine (winXP) it works fine. It starts ok, never crashes, etc. When I install the service on another machine (win2000) it *sometimes* crashes upon starting. The progressbar you get when you manually start the server wi...more >>

i'm trying to call an excel macro from C#, but i have never done it before, and advice? can you pass an argument to a macro.. if so how? Thanks in advance...more >>

Hi, I have a compiling problem. Please take a look at the code below. I have an application that is built upon three tiers: one data tier (Foo.DataManager), one business tier (Foo.Kernel) and one web presentation tier (Foo.WebFiles). The data tier shall only be accessible thru the business ti...more >>

Does .Net use quick sort or bubble sort for Sorting??? Cheers, Akhil ...more >>

Has anyone typed up an index for the O'Reilly book "C# and VB.NET Conversion?" I'm just learning C#, and often using this little book to see which VB.NET terms translate directly to some term in C#. However, it's a real hassle that the book has no index, just a table of contents. For exa...more >>

Hello. Can anybody tell me do I open any web page from my code in Internet Explorer? Or how can I just run any program from my code? ...more >>

How do I create power point style text box Thanks Vijay ...more >>

What do you believe? Is it possible to program a c# plugin(dll) and use it with a c++ (native) program, without having the sourcecode ...more >>

Hi all, If I read a file by StreamReader and Encoding is Unicode, than all the contant read from the file will be change into Unicode string . And how can I make this Unicode string return the real text of that file? ...more >>

Hi, all! Is there a control that can view html pages in a windows application? Thanks! --A ...more >>

I'm trying to install windows service with created for it user account with debugging previledges. But following error occurs: An exception occurred during the Install phase. System.ComponentModel.Win32Exception: No mapping between account names and secur ity IDs was done. User account is ...more >>

Hi All, Is there a way by which I can autopad contents of a DataTable. For e.g I have created a data table with data columns of fixed length. When I insert data into these columns I automatically want to pad them (left/right) with 'X' if they are less than the max length. Do I have to do with ma...more >>

I'd like to retrieve items directly from a DataGrid rather than from the source (data table). The goal is to retrieve a field in the Datagrid's current sort order. Is there an easy way to do this? ...more >>

I am trying to create a collection object that contains an internal hashtable to help in retrieving data, but what I have relized is that I am adding the object multiple times is there a way to add a key that points to the reference of the object or do I not understand the hashtable? Here is ...more >>

I'm having a tought time wrapping ym head around implementing EM_STRAMOUT It requires a callback function which is repeadely called and passed a buffer which is a portion of the richedit's complete contents. However, the message itself is supposed to send a structure (which contains the ca...more >>

I have a Static DataSet in a class file that I am using globally between a few forms. The main form populates the dataset through a menu option which invokes ReadXML in the class file to populate the DataSet. The ReadXML is a rather lengthy operation with >5mb xml files (I am reading in the schem...more >>

When doing a foreach statement like the following why is the variable read-only? foreach (e in theArray) What if I have an array of objects and I need to create a new instance of the object. If the e is read-only then I have to use a for statement to accomplish this. ...more >>

What is the philosophy of putting transaction code in the middle tier vs DB stored proc? ...more >>

For currency, which datatype do we need to use? ...more >>

Hi, How would you do this in C#. How would you regenerate (reseed??) a primary key in a table? and What is the difference between primary key and unique key? Regards, Akhil ...more >>

I know there is some Crystal Reports functionality in .NET but I was wondering if it was possible to actually schedule Crystal Reports dynamically using csharp code and/or generate reports dynamically by pulling parameters from the database. I am not that familiar with Crystal but we have 3 repo...more >>

How do you reset a value for an existing key in a hashtable? I need to create a collection and compare the values with another collection: when certain parameters are met then I need to reset the value of certain elelments in the first collection. I would have thought that the Hashtable.Ite...more >>

Hi Everybody, its about my 4th day on C# and all seems to be going smoothly however I've started to get into Datagrids and in particular binding data sources to them. In the documentation it says I can bind all the usual Datasets etc but it also says I can bind the following: Any component tha...more >>

Hi there, Could someone help me out from this situation? I want to write a pattern to search and replace. string pat = "e([\u1780-\u17A2]\u17D2[\u1780-\u17A2])a"; string result = Regex.Replace(instr, pat, "$1\u17CE"); What I want is to make this part \u17D2[\u1780-\u17A2] as optional. I ...more >>

I'm doing a lengthy operation and would like to update a textbox while working, but the tb gets updated AFTER the operation is finished! code: foreach (PDEHeaderItem pi in _pdeHandler._pa) { txtInfile.Text += "X"; txtInfile.Invalidate(); txtInfile.Update(); ... ...more >>

I have a need to convert the names of the members of an enumeration into an array of strings at runtime. I have determined a method using reflection. Type theType = typeof(MyEnumName); MemberInfo[] theMembers = theType.getMembers(); foreach (MemberInfo entry in ...more >>

Hi, Have a symmetric encryption method that returns a base64 string. I then get the hex representation of that string with the code below public static string Base64ToHex(string input) { StringBuilder sb = new StringBuilder(); byte[] inputBytes = Encoding.UTF8.GetBytes(input); ...more >>

Does the default menu control have any styles/properties which can be set to make menus look like the new style menus (as can be seen in the .Net MSDN library)? Failing that, is there a different menu control which does look like these new style menus?...more >>

I saw this article here: http://www.arstdesign.com/articles/interopmarshaling.html But i had some problems doing this. Codes: /* C Structure typdef struct { int avalue; int bvalue; unsigned char cvalue[10]; } TestA; */ // C# Structure [StructLayout(LayoutKind.Sequ...more >>

Please verify that: 1) You are specifying user name in full: DOMAIN\username. 2) You are part of the 'Administrators' or 'Power Users' group. 3) The password you are supplying is correct. I have seen this error come up only when the password I provide is incorrect. Hope that helps. ...more >>

Stuart, I have tried your code and figured out exactly what's going wrong. It's a very subtle threading issue. You see, in your form startup code, you make a call to statusInformationScreen.Show(); This method starts a thread which executes the following code: private static void ShowT...more >>

I read somewhere that if you are concatenating more than 2 or 3 strings you should use StringBuilder as it will use up less resources. Does this apply when you are building up a string (for example an SQL query or some XML)? This is an example of some of my current code : strReturnedXML = ...more >>

Suppose I have a program in C# that has the ability to save images of say a room. Suppose I have a series of these images taken over a period of maybe an hour. How do I detect (apart from using my eyes) which one of these images is different - ie; someone has walked into the room? Is the...more >>

Hi, This is a problem that I've been having for a while now. Basically, I've created a XML Schema in the designer, created a dataset based on this schema, and now when i try to access some of the tables within the dataset, it doesn't enumerate any of the properties, and they aren't access...more >>

Hi I posted a similar question like this to a reply to another thread but it wasn't really relevant to that thread and I don't think anybody read it so I'm posting a new one. I'm trying to think of a use for remoting in the workplace, but can't. I want to look cool by "running commands ove...more >>