As I understand it, C# doesn't offer dynamic variable names. Below is my attempted workaround. Is what I'm doing possible? FYI, I already read all the "why in the world do you need dynamic variabale names" comments by other posters, if you are kind enough to post a reply please either say i...more >>

What is the use of using an AS clause in a SQL query something like: SELECT accno AS AccountNumber from Accounts What difference does it make when i use the ExecuteScalar() function and store it in a variable of the name of my own choice..... like: string AccountName=cmd.ExecuteScalar();...more >>

Hi Folks, I am developing an application consisting of a webservice and a Win32 service both written in C#. When the webservice is called it writes a number of records away to a SQL server database. These records require further processing by the Win32 service as soon as they appear in t...more >>

Hi, Which of the following elements can an interface NOT contain? Constants, Constructors, Static Members or all of them? Thanks, Monica ...more >>

Greetings I am new to C# coming from Java / EJB. I have been messing around and in an app i am working on I am trying to get access to the fields of the current row in a table adapeter (current row from binding source). Here it the code I found that works, is there a better way?? code ...more >>

Hello, I've done some research prior to posting this, but I can't seem to resolve an issue when I try to add a Service Reference to my application. I can successfully add a reference for the "GoalService", but nothing I try allows me to add one for the ComboService. Is there something I'm mis...more >>

Hi, An ASP.NET Web application was created in C# and you want to deploy it to a host server on the Internet. The application was configured with code-behind pages which are compiled in the build process. What are the essential Web Application files you should deploy to the host? A: Cop...more >>

Hi, Does someone know the answer? You are building a setup for your application. The application contains a custom control developed by you, which will be shared across multiple applications. How should you package the custom control? A: Package the control in a Merge Module (.msm) and...more >>

http://msdn2.microsoft.com/en-us/library/system.exception.data(VS.80).aspx says: "Avoid key conflicts by adopting a naming convention to generate unique keys for key/value pairs. ... two applications, named Products and Suppliers, each has a method named Sales. The Sales method in the Product...more >>

I'm familiar with the idea of page-scraping - getting data from websites where there's no nice feed to use. Is there a name for the opposite i.e. when your program simulates a human inputting data to a site? I need to do this and I don't know what to search for. So far, my searches have been...more >>

Hi, I have a question that hopefully someone can help me out with. I am trying to use fop to create a pdf report. I have the fop code created but I can't figure out how to recieve data. The data is located here http://localhost:8080/fop/fop?fo=?PATHTOAFILE Any help would be apprecia...more >>

Hey all We are working on a project and have alot of forms with textboxes on. Now we want to put some input validation keypress events on those textboxes. We got a parent class where we putted some event into ex. public void AlfaKeyPress(object sender, KeyPressEventArgs e) { // still ha...more >>

Hi Group, A question about threads and asynchronous TCP sockets. In the attached code, even if the host TCP server is not running my code reports that the connection has been established. With the Server NOT listening I get (Even actually the system powered off) connectHost Started co...more >>

I have a list of file names I need to parse and check if they match a valid expression. I want this to work like you were listing a directory. ie *.doc dhows all doc *.* shows all documents *doc shows all those ending with doc ?abc.doc would show documents aabc.doc, babc.doc etc etc...more >>

Such as this: return base.CalculatePrice() * 0.9M; What data type does the 'M' stand for? I can't find a listing of these shorthand notations anywhere. Thanks, Tom ...more >>

I have created a new form from the main form. When I close the main form with the 'x' close button, its Form.FormClosed event is run, but not the dialog's. Is this normal? It is ok / dangerous? How can I force shutdown code within the dialog's Form.FormClosed event run? Zytan ...more >>

I have a C# winform with accelerator key associated with some menus. If my exe is in unmanaged C++ and the winform is invoked through interop, the accelerator key not working. If I create a new C#.Net project and the same winform is invoked in the C#.Net project, the accelerator key works perfec...more >>

I have a table of keywords (hundreds/thousands of records): KeywordID KeywordName --------- ----------- 1 Apple 2 Orange 3 Pear I then have a table of products (also hundreds/thousands of records): ProductID ProductName ProductDescription -------...more >>

Hi Readers, I am trying to understand threading and or evetns with C#. So I have set myself up a learning challenge. I wish to develop and application that reads information asynchronously using TCP sockets and uses a seperate thread to process data once it has arrived. This second threa...more >>

I have a usercontrol written in C# that exposes a public property of type double. This control is used in a program written in VB.net. If I set the value to 66.6667, it stays fine, I can break into the usercontrol code at various events that can change the values and it's still 66.6667. How...more >>

I have a function that accepts an Exception, and writes out all of its information to a log. This function is called in many places where an exception is caught. In some places, I'd like to add one more bit of information to the log. I could just write it out to the log there, or, I could add...more >>

Hello I'm still what you'd consider to be a newbie to c# Can anyone provide an explanation to reflection, when, why it's used, and benefits or show an example. Thanks ...more >>

I have an application with many user controls and forms which display measurements in whatever the current unit system is. The current unit system is kept in my 'Units' static class as Units.CurrentSystem. I also have an event in the Units class called Units.CurrentSystemChanged. My controls ...more >>

Hi, I'm trying to connect to a Postgres DB from a c# app, but this is the first time with ODBC and am experimenting some troubles. First of all, do I need to manually execute the drivers, or do they start with the server (the file I downloaded and installed is the latest installer package)? I...more >>

Hi, I'm creating an application that will need to use a timer to do a static method call every second. My question, is what would be the best timer to use? I know there are several, but I'd like to use a timer that is probably the most reliable, and hopefully designed with high performance ...more >>

Is there a way to get to a Type definition from a wsdl through c# during runtime? I'd like to load and process the wsdl into its various objects at run time and be able to use a factory to return the appropriate type when that object is returned from a third party web service. Ultimatly the clie...more >>

As an example supposing I have an object: public class myClass { public List<byte[]> listOfBytes; public int X; public int Y; } and a method ("op()") whose signature is: public delegate void ByteOp(byte[] b, int x, int y); How would I go about creating a...more >>

I'm new to Visual Studior C# .Net 2003 on Vista, and have been uable to get my UnhandledExceptionHandler() to fire. I have added these lines to Main() before the Application.Run(): AppDomain adCurrent = AppDomain.CurrentDomain; adCurrent.UnhandledException += new UnhandledExceptionEve...more >>

Hello... I am trying to print a .pdf file using my C# application using: Process myProcess = new Process(); myProcess.StartInfo.FileName = "c:\\Document.pdf"; myProcess.StartInfo.Verb = "Print"; myProcess.StartInfo.CreateNoWindow = true; myProcess.Star...more >>

Hi all, I have a console app that uses AppDomain.CurrentDomain.UnhandledException. However it only seems to catch exceptions in the current thread. Exceptions in other threads (like from a timer) don't seem to get reported at all (and my application keeps running). How do I catch unhandled...more >>

My task is to read html files from disk and save them onto SQL Server database field. I have created an nvarchar(max) field to hold them. The problem is that some characters, particularly html entities, and French/German special characters are lost and/or replaced by a question mark. This is re...more >>

I have a partial class of a UserControl coded as follows: public partial class Login : System.Windows.Controls.UserControl { public delegate void StartingLoginHandler(string message); public event StartingLoginHandler StartingLogin; public Login() { ...more >>

Hi there, I have the following class hierarchy that isn't compiling correctly, and I don't understand why: public abstract class A<T> where T : System.IComparable<T> { } public abstract class B : System.IComparable<B> { public abstract int CompareTo(B other); } public abstract class ...more >>

How often have you seen this kind a of construct in a .NET class: class A { private string b; public string B { get { return b; } set { b = value; } } } Wouldn't it be nice to have an attribute you could place on the member data that would automatically generat...more >>

Hi all, We have one product. It is client/server based application. We have developed client application in VC++ 6.0. Our client is desktop based application like dialog based application. Client application will connect to server according to user requests. This is current scen...more >>

I am using the PrintPreviewControl on a custom form to display a report. The report is multiple pages. I have a NumericUpDown control on the form to navigate the pages of the report. In the ValueChanged event of the UpDown control I change the StartPage property like this: private v...more >>

Is it possible to check a datetime value as in which culture format? My program is written for international customers. I have a function which converts the date and time to en-US format and is working. But I want to check before converting to see if the date and time is already in en-US format?...more >>

I have this code: DataRow row = docAttachTable.NewRow(); docAttachTable.Rows.Add(row); What I want to know is the primary key number (it's auto-generated). Is there anyway to do that? thanks in advance, chance. ...more >>

Hello, After getting some posts on forums.microsoft.com but no solution I was asked to post over here. Hopefully someone here can help with my problem. I have a Windows Forms application written in C# via VS 2003. It does 100% of what it should while in Debug mode (running in the debugge...more >>

Hello, It may be a repeated question but I don't find the solution to the situation that I encounter in it. My application is monitoring another application that is built in VB6. The application monitors all the textboxes and other input & display controls on that application. The data fr...more >>

I have a binary file created using C++ that contains an object of the structure: struct student { int roll_no; char name[20]; char qualification[50]; }; the following code is used to create and write to the file: void WriteToFile() { student s; s.roll_no=1; ...more >>

Hi! i am working on a hospital data base. i have two tables Administration and knowlege base. in Administration i have columns ID, NumberOfDoctors etc, and in KnowlegeBase i have some similar columns but ofcourse differnet data. Administration ID Date HospitalName ...more >>

Hi, I have an xsd which contains two tables, for the sake of this example I'll call them Person and Salutation. Person contains personal details, plus a key reference to the salutation table which contains salutations i.e. Mr Ms Mrs etc. So, I have filled the two tables in the xsd and would...more >>

Hi, I'm new to web services using XML. I'm developing application using c#. Could anybody explain me the difference between [WebMethod(TransactionOption=TransactionOption.RequiresNew)] [WebMethod(TransactionOption=TransactionOption.Required)]. I'm unable to understand the difference between ...more >>

Hi , I've read this a long time ago , read it again: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/shell/programmersguide/shell_basics/shell_basics_extending/context.asp I know how to make file associations and then add an option to the shell context menu ...more >>

Hi I have 2 audio cards and want my first mediaplayer object to play through soundcard 1 and the other object on card 2. I can't find any properties to set, so i fear this will not be possible. Any hints or workarounds ? J. ...more >>

Folks, I am facing a problem. I am trying to manipulate the HTML data (thru the Document and DocumentText properties) of the WebBrowser object (System.Windows.Forms). The problem is that the application enters in a loop state and my changes don't apply. Have somebody faced the same pr...more >>

I have been working with serialization in some places for a while and have now begun to run into version issues. Unfortunately my company is still working with .Net 1.1, so using the VTS of 2.0 was not an option. So I decided to have my classes implement ISerializable and wrote a set of functio...more >>

Sometimes, I need to do some time-consuming operations based on whether a specific keyword was contained in a lengthy string. Then, for a better performance, I wrapped that lengthy string into a StringBuilder. But after doing that, it seems there's no proper methods defined in StringBuilder f...more >>

in .net 3.0 i have created bindingsource, dataset and tableadapters in code. how can i bind specific column from specific table to listbox....more >>