I have a toolbar control in my main form. I thread out a an instance of a watcher class (just looking for new processes and raising an event when one arises) as a background thread. my main form receives events from the watcher thread. Now, within the event handler on the main thread (which ...more >>

I have added a chapter on dynamically loading classes (plug ins) using Reflection. Code comments welcome from Jon Skeet or anyone else interested in this. http://www.geocities.com/jeff_louie/OOP/oop13.htm In this chapter I am going to demonstrate the use of encapsulation and polymorphism...more >>

After a dataset has been populated from a text file, is it possible to update a text file from a dataset once changes are made? TB ...more >>

Given the C# code below, can anyone think of a better class design? What really gets my goat is that the code within derived classes D1 and D2 is identical and in my mind should be refactored into a base class, but how can I move this particular 'shared functionality' into a base class? If ...more >>

Hello all I have a project that I have to read the file - which I have done I can see the file output. I then need to read the line - parse the line into three separate values (there are 3 = name age and gender) static void DoPartD() { FileInfo theSourceFile = new FileInfo(@"c:\\Doc...more >>

Hi, My user types 7 digit numbers into one of my datacolumns like this: 9999999 I want that to be formatted like this: 999-9999 How could I use the DataColumn->Format property so as to add the '-' in between? Or should I use some other property? Thanks in advance, Rakesh ...more >>

I have written an WindowApplication (in C# with VS7) . It target file is MyApp.exe. It's default icon (display in Windows Explorer) is not pretty. I replaced file app.ico in project directory with my icon. However, the default icon is not changed . Can anyone help me to change the icon of my app...more >>

Ok, I'm working on a program that is supposed to compare each letter of a string that is put into a stack and a queue. It is supposed to tell whether or not a word is a palindrome or not. (a palindrome is a word that spells the same thing backwards/forewards). I have gotten this much so far: ...more >>

Hi Does anyone know of a snippet of c# code that will allow me to send hex to com port 1 Appreciate your help in advance Cheer Steve...more >>

Does anyone know how to transfer information from Visual C#.net to a mysql database? Thanks in advance! ...more >>

Hello, I am new to Visual C#.net and would like to read some tutorials. Does anyone know some good ones? Also does anyone know a recourse site like php has (php.net)? Thanks in advance! ...more >>

I have a byte array buffer that is of a static size. byte[] buffer = new byte[512]; Data is being read into it using NetworkStream.Read int countBytes = netStream.Read(buffer, 0, buffer.Length); For my applicaion, I need to output exactly the number of bytes that were read in, not the e...more >>

Hello Can anyone provide advice/links on somewhere to get a definitive explanation with Examples of how "protected internal" differs from "protected", "internal" and the other access modifiers For "protected internal" some places appear to say it means a union of protected AND internal, other pl...more >>

Is it possible to do an automation object accessible from vbscript in c#? -- Johnny ...more >>

Hi all, 1. I have a problem with cell selection in a table in a DataGrid. I dont want that anybody writes in the cells. That was not a problem I changed them to "read only", but if I am going to scroll the table up and down or from right to the left the content of the active cell will be...more >>

Hello all, OK, first of all I have known about properties since VB6, which I have and have used extensively. It seems that property get and set are basically the same concept in C# and VB.NET, so no problem there. In programming with VB6, I never wrote any program that used properties, and to...more >>

In the Win32 API there's a function called PathFindOnPath. This searches the Path for the specified file. Does an equivalent exist in C#? I guess I could use Environment.GetEnvironmentVariable("path"), then split the returning string in separate directories and then check if the file I'm loo...more >>

Is the SystemParametersInfo function incorporated into the .Net class libraries? Say, perhaps in System.Management? Also, I've been looking for a .Net method to find the currently active window. Anybody care to shed some clues? Mr B ...more >>

[ using C# with WindowsForms ] Hi, I think I've read everything there is to read about localization in dotNET and I still don't get it. I understand the concepts and I understand the code, but there's no way that the scenarios described can be translated(!) to a real world application. ...more >>

How can i compare 2 strings and extract the difference? string1="abc zxy" string2="abc 123 zxy 234" extractedString ={"123", "234"} thanks Aaron ...more >>

I have an existing application that has 3 different Projects inside of it. The projects are: Administration, DataAccessComponents, and Utilities. I have added a fourth, a console applications. Inside of the console app references, I have added a reference to one of the other projects so tha...more >>

Hi, I would like to create some mechanism to handle all the exceptions which will happen in my application. I have one form which is the base form while all the other forms inherit from it. I try to find a way to "register" the base form to the Error handling , but I don't know how…. ...more >>

Hi guys. I have posted a question before but I came up with another one and I just wanted to get an opinion of as many people as possible. Today is a first for me developing in C#. I am looking for some guidance.What would be logical topics to look at and what things I should consider? I am VB.NE...more >>

I have a method called InsertUpdate which I want to use to handle both insert's and update's. The GUI has a 2 textboxes: First Name and Last Name. This is what my InsertUpdate method looks like right now. InsertUpdate method: SqlConnection cn = new SqlConnection("Initial Catalog=TEST;Data ...more >>

I cant get this to work in C#. It works in VB.NET. OleDbConnection Conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + FilePath + ";Extended Properties=""text;HDR=NO;FMT=Delimited"""); FilePath = "C:\\ftproot\\TOG\\" ...more >>

Hi I'm trying to write a service. It's a pretty simple thing at the moment that just writes to the EventLog, just so I can get my head around the basics of writing Services. It's compiled fine in Visual Studio, but I'm having a bit of bother getting it to run Visual Studio says to use InstallU...more >>

Is it possible to programmatically disable/enable menus of Microsoft Word2002 from a COM Add-in developed using C# .NET? Thanx. B *** Sent via Developersdex http://www.developersdex.com *** Don't just participate in USENET...get rewarded for it!...more >>

Hi, Is there an event I can listen for in WndProc so I know when the screen saver is active and insactive? Thanks ...more >>

Hello ! I have extended DataGrid Control as per my requirements. My questions is how to add this Custom Data Grid to the Form (that I want this customized grid to appear). Following are the blocks of code. public class CustomDataGrid : DataGrid { public CustomDataGrid() { /...more >>

Dear All, I am new to this Topic Tell some site names? Pls help me learn LDAP? Thanx Gopal Prabhakaran ...more >>

Hello, If I have some XML in the following format: <Foods> <Food Name="Pizza"> <Ingredient Amount="500g">Flour</Ingredient> <Ingredient Amount="100g">Cheese</Ingredient> </Food> <Food Name="Pasta"> <Ingredient Amount="500g">Pasta</Ingredient> ...more >>

Can anyone tell me how to to create a control instance dynamicly. Example: When I have a string value with the value 'TextBox'. I want to create a TextBox instance. I know that i can do the folowing: TextBox tb = new TextBox(); Now i've created a method that translates the string value: ...more >>

Hi all, I'm trying to set rights on a file or a directory with a C# program. I have tried with WMI, Win32 classes, etc, but I didn't manage to do it. Could anyone help me? Does anyone have a website, a free sourcecode, a sample, or anything that could help me changing access rights on a file ?...more >>

Using reflection, I'm trying to get the value for a constant in an enum. Getting the contant name works fine using: FieldInfo[] fieldInfos = TYPE.GetFields(); foreach(FieldInfo fi in fieldInfos ) { Console.WriteLine("Name: {0}" fi.Name); Console.WriteLine("Value: {0} " fi.GetValue(null)....more >>

Does anybody know if there's way to do this in C#? Jelle van Baardewijk ...more >>

Not sure if this is the proper group to post this but its worth a shot: Is there a project property setting that gives hyperlinks and linkButtons the "rollover" effect with underlining? Right now, it is somehow defaulted to an automatic underline which I only want displayed when the user mov...more >>

Dear all I want to know that how to use ToArray function in ArrayList. I have an = ArrayList which is storing string, Actually, I want to use the Join = method, so I think I need to convert the arraylist to array first. The = question is do I need to convert the arraylist to array in order to ...more >>

Hi, What libraries does C# have for UUEncoding a file? Thanks ...more >>

Hey, I just started out using Visual C# (Visual Studio .NET 2003), but am having a little problem figuring out where to place my datastructure. I've worked with programming alot before, but this is my first real object oriented project. To describe my problem, I'll just outline the project I'm...more >>

Hi all, I am beginner in C#. I am currently migrating a system which was written in VB .NET to C#. In the VB program, the programmer is able to choose the DBMS between SQL Server 2000 and Oracle, according to a configuration string stored on the Web.config file. This way, when th...more >>

I am curious what others use for maintaining versions of projects. Currently, I just save the builds in folders with a date on them. I do have Visual Source Safe which came with .Net Enterprise however I currently have not had the time to use it. What do others use or do? Thanks ...more >>

Hi, I'm trying to post XMl to a URl but when I test it the text in the = request stream doesn't appear to get sent: // Configure secure certificate & credentials req.ClientCertificates.Add(myCert); req.Credentials =3D myCache; =20 ...more >>

Hi all If I have to read just one or two columns from my SQL server table, is data reader the only option? or is there a more efficient way? Thanks a lot in advance for your replies....more >>

This is really a design question.. I'm writing a HTTP server as a little TCP exercise.. The way of handling the connections i've drempt up involves invoking a new thread each time a tcp client wants to connect. Since theres a 25 thread limit on the framework this doesn't sound a clever idea...more >>

'System.ExecutionEngineException' $B$N%O%s%I%k$5$l$F$$$J$$Nc30$,(B mscorlib.dll $B$GH/@8$7$^$7$?!#(B I can't find the reason of this strange exception, help me , thank you! --shi ...more >>

Hello all, I want to create a List of TreeViews in either a ListView or ListBox component. The result would be a list object that for the first row has a tree like: com -foo -goo -blue and then another row that has another tree, and so on and so forth. What woul...more >>

Hi, I want to include a different app.config in the release vs. the debug build. How can this be done?...more >>

I am currently using this to get data from an .xls file:string conn = "Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=" + file + ";" + "Extended Properties=Excel 8.0;"; System.Data.OleDb.OleDbDataAdapter adapter = new System.Data.OleDb.OleDbDataAdapter("SELECT * FROM [...more >>

I am writing a program that gets event logs from remote machines and stores them in local database. The process runs at night every day. To save time, every time when the process reads event log from remote machine the process should only insert new event logs to the database. Since I have no ri...more >>

Hi All I understand that the .net framework has garbagecollectors which run automatically and release memory. But in my application in C#, i have an object which should never be released. Can I achieve this in .NET ? An urgent response is neede, as I am struck up with my development wo...more >>

Hi why there are 2 diffrenet types in heritence of defining methods 1. one redefining method of base class using new keyword 2.customizing method using virtual and override keywords is any one has more advantage then other or does it help compiler in any way Regards Naveen ...more >>

Hello: I have created a component in which I need to do a timeout operation. What is the equivalent to Application.DoEvents() in a Component. public virtual bool ReceiveResponse( out string aResponseString, int aTimeoutInterval ) { bool aTimeout = false while ( ( Response...more >>

Hello For my first C# program I have an axWebBrowser window. I set it to Navigate to a particular site when the program starts. Works fine. What I would like to do now, once the navigation is complete, is to scroll the window to a particular region. I can trap the NavigateComplete message but ...more >>

Hi , I have developed an Application in visual C#.NET. I want to write html help files. How will I do this? Any suggestions please? Thanks for your help. Regards Anand Ganesh ...more >>

I have been searching newsgroups for solid answers on good printing practices in .net, and have not found an answer. Obviously, .net provides the PrintDocument/PrinterSettings objects, that from the examples are great for printing lines with the graphics object. But this is not very useful- ho...more >>

Hello, I am writing an application that needs to read a file that is already open by another process for writing. When I do the following: FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read); BinaryReader br = new BinaryReader(fs); I get the following exception: ...more >>

This object works great with "files". but I have a Virtual web Site under my main site that points to my file share. Since this is secure, I'd like to open the file via its url. I tried this but .net failed. Said URI formats are not supported! string sFile = "https://myServer/Reports//1...more >>

This object wokrs great with file and file shares. But I have a virtual web site created that points to my file share where my files are located. Since this virtual web site is protected, I'd like to use the web site's file instead of the file share. Is it possible to open a file (StreamRead...more >>

Hi, to all... I have a project that have 5 reference to com objects... How could generate an exe file that have all the dlls inside? Thanks in advance. Owatona....more >>

How can I compile two classes from the command line that reference each other? Class A referenced Class B and Class B references Class A. Regards...more >>

How can I compile two classes from the command line that reference each other? Class A referenced Class B and Class B references Class A. Regards...more >>

Hi to all What is the best way call methods with parameters or create properties to store values? Thanks in advance. Josema....more >>

Hi, What its the event that shows to me that the user has choose a color in a color dialog?? for example in the openfiledialog there is one that is File_Ok, but the color dialog class i dont see an event like this... Thanks in advance. Josema....more >>

I have a problem transfering files using sockets from pocket pc(.net compact c#) to desktop(not using .net just mfc and sockets 2 API). The socket communication is not a issue and I am able to transfer data across.On the serve I am using Socket 2 API (recv function to read bytes)and not using ...more >>

Hello All, I have a coding structure question. I my attempt to get upto speed with creating C# applications. I taken one of our excel sheets and written it as a C# app. It is a mortgage calc type program and performs numerous calculations based on user input, I am experiencing a minor pe...more >>

Hi I am having a problem with the SQL server connected in VC#.net I am using the SQLDataAdaptors to access and fill the data to the DataSets. There are certain pages in sequence which run one after the another as a process based on the user interaction. All the pages (even pages before ...more >>

can a method return multiple values? pseudo code public string method1() { //db pull select col1, col2, from tb1 s1 = col1; s2 = col2; return s1, s2? } string1 = method1[s1] string2 = method1[s2] ...more >>