Hello, I'm a total newbie to .NET & C# so... When I use Messagebox to show a string & test it, no problems. i then change the string to an integer, save, rebuild & test & it comes up with this error: The best overloaded method match for 'System.Windows.Forms.MessageBox.Show(string)' has so...more >>

What the heck - I can't find it. A bit shocked to see it missing though. So "Does VB.NET have the yield keyword, or any equivalent of it" ? -- - Sahil Malik [MVP] Upcoming ADO.NET 2.0 book - http://tinyurl.com/9bync --------------------------------------------------------------------------...more >>

I was comparing strings, as one does: stringA.CompareTo(stringB) == -1 Then I thought that this was not as easy to read as it could be, wouldn't it be clearer to write: stringA < stringB Of course that doesn't compile since the < operator is not defined between strings. Easy enou...more >>

When I double click on a source file in Solution Explorer it always brings up the design interface for a control. Is there somewhere that I can change it so that it brings up the code instead? Thanks, Steve...more >>

Hi, I've written a custom control that has 6 labels and 3 properties. The properties are of type ENUM so they show up as a drop list when the control is dropped on a form. I choose a value for each property and the labels reflect that (works great during design time). The problem is that ...more >>

I am learning C# .net and am working with Visual C# .net package. I am trying figure out how to create a nonvisual object that can contain functions/methods that would be called to enforce business rules. After reading oh so many posts I am still not sure. Do I create a new class by going...more >>

I'm extending TreeView to build a file/directory chooser like the one in NTBACKUP. I've implemented four-state checkboxes; no problem. And I know how to explore files and directories and populate the tree (including populating branches on demand, when the user first expands them, rather ...more >>

I tried this on another newsgroup but no nibbles -- I'm hoping someone might be able to help on this csharp group -- I'm trying to use SqlCommand.ExecuteXmlReader() to write data to an XML file. Most of the code is below. The result I'm seeing is that the schema file is written and looks go...more >>

Hi I am creating a form for vieweing and editing faxes. I read the fax tiff file into the picturebox. And I have two problems: 1.I want to add a function for the users to be able to select an area in the picture box and clear it. I am using the Graphics.DrawRectangle method but the rectangle...more >>

Does anyone know about this ad-hoc c# compiler? I've heard that there's a c# compiler that's works as a single file you just drop into a directory and use to compile stand-alone .cs files in a very simple manner. It might even automatically recompile whenever the .cs file is saved ... U...more >>

I have an object which contains an object of type ServiceController[]. When I attempt to serialize this object using a binary formatter, I receive the runtime error message, "...is not marked as serializable". Code snippet: [serializable] class MyObject { // One of the properties p...more >>

Hello, doing some profiling work and trying to resolve the memory usage balooning through the roof. Just want to make sure that my reasoning is correct. My question is as follows: Let's say I have 1000 ArrayLists and each of them has quite a bit of data in them. Does .NET framework load 1...more >>

Hi, I'm not sure what happened here, but I had a whole set of tabpages with home-made buttons on them. A shortened version of the class I wrote them in is here: using System; using System.Windows.Forms; using System.Drawing; namespace ToleranceUnits { public class Button3x : CheckBo...more >>

When I execute the following program, I get garbage for the ethiopic character whereas I get the right ones for the arabic characters. I have the ethiopic fonts installed. Any ideas why I am getting garbage instead of the right charcter for the ethiopic character? Do I need to set something in v...more >>

Hi, Can anyone please tell me if there is a difference between the two options described below: public enum PingerID {All, A=240, B, C, D, E, F, G, H, J, K, L, M, N, P, R, T, Unknown}; for (PingerID Pid = PingerID.All; Pid <= PingerID.T; Pid++) if (PingerID.IsDefined(typeof(PingerID), (i...more >>

Hi, I've a c# windows service constantly communicating with an ASP.NET web service. After running for sometime, I am getting the following exception at the windows service (client): Object reference not set to an instance of an object. [Stack Trace: at System.Net.HttpWebRequest.ClearRe...more >>

I am writing a program in c#. I would like to read a binary file to the standard input of a process (it is flac.exe to encode/decode some files). I have tried to use the following code : StandardInputWriter = convertProcess.StandardInput; [...] byteRead = SourceFileStream.Read(buff,0,BUF...more >>

hi all, I've created a windows server that will watch to make sure another process stays running. It looks for the Process and attaches to the Exited event, which works fine. If the program is closed, my service correctly restarts it. The problem is that its working a bit too well, and i...more >>

Okay, how I get myself into these situations, I don't know, but I have to design a component to plug into a C# Windows Forms application that allows the user to design a sql query. I'm thinking of something like the view designer in Enterprise Manager. Does anyone have any idea if there are...more >>

Hi, I'm fixing a bug in an application and need to step thru the appl to find where it's occuring. The main project includs 33 other projects each having a .resx file in it. When I step through it would give me message that it can't show me codes because only assembly codes are available. ...more >>

Hi all, I'm developing n-tier applications and I'd like some advice. I have my data layer, business layer, and application layers. The data layer uses a method similar to the one described here: http://www.codeproject.com/cs/database/dal1.asp. Business objects encapsulate the data acces...more >>

I can live with this but I wonder I I'm somehow causing it or can override it. I'd appreciate hearing that this is expect behavior or otherwise. Thanks I have two forms - Form1 and Form2 On each there is a RichTextBox - Box1 and Box2 If Form1's title box is highlighted and I'm typing ...more >>

Hello, I have a text file that contains 5 lines, I want to write to it: removing the first line and replacing it with something else, while keeping the other lines. Can someone tell me how it could be done? Its a silly question but I am a new developer in C#. Thank you....more >>

Hello all! I was wondering if any of you could shed some light on this problem I cant seem to figure out... I try to add an event handler to my SerialPort variable by doing: mySerialPort.DataReceived += new SerialDataReceivedEventHandler(newDataReceived); where "newDataReceived" is ...more >>

Hi all, I'm here to humbly request some "gimme" help from the group. I discovered the infinite wonders of VS.NET 2005 and ASP.NET 2.0 at Tech Ed a couple of weeks ago, and since returning to work I haven't looked back. Unfortunately I still have some critical functions that I originally cre...more >>

Hi All, How are you ? I'm trying to insert null values in my database, but these datas are datatype Int in my C# and it's converting my null values to 0 (zero)! How could i threat that ? -- Please, check my theSpoke: http://www.thespoke.net/MyBlog/dgroh/MyBlog.aspx ...more >>

I have a class: public class ZType : ICustomTypeDescriptor { private ArrayList el = new ArrayList(); [Editor(typeof(MyCustomEditorTypes), typeof(UITypeEditor)), Browsable(true), Category("Data")] public ArrayList Elements { get { return this.el; } se...more >>

Hi I am working on a solution for a web page that can print itself using the browser's printing capabilitiy, but I cannot use javascript on the project. How can I print the web page? Thanks in advance for any help....more >>

Hello all, I am enumerating vb6 process from c# application by name. I need to send message to all processes that has the specified name but for this purpose I need the handle of the main window for each process returned. I once read that vb6 app mainWindowHandle is the handle of the hidd...more >>

I need to embed excel functionality into my app, but can't find a complete solution. The article below shows how to embed it as activeX in a browser control, but the control doesn't support bringing excels menus into the program. Is there annother approach that would allow more complete functi...more >>

Hi, As I am trying to display values from database in labels, literals etc. which is the best way to do it, using the object oriented methodology ?!. Basically, I want to creat a collection of values from the database, store in class vars and access it through an object. Any articles, co...more >>

Hi- I'm looking for C# code sample that will extract the list of websites from the IIS manager. anyone? Thanks! ...more >>

Hi, I found this online: "If the SupportsTransparentBackColor bit is set to true, and the BackColor is set to a color whose alpha component is less than 255, OnPaintBackground will simulate transparency by asking its parent control to paint the background." What I've tried to do is this: ...more >>

Hello All, Does anybody have an example to raise an event that may or may not give feedback to the caller? I am thinking about something roughly like the Cancel property of an CancelEventArgs or the Handled property on the KeyDown events. What I have is a user control that I want to rai...more >>

You have to use something like JNBridgePro....more >>

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I have such one written in VB6. Public Function GetNodeByText(colNodes As Nodes, sText As String) As Node Dim nodEach As Node, nodResult As Node For Each nodEach In colNodes If nodEach.Text = sText Then Set GetNodeByText = nodEach Exit Fun...more >>

This works but I was wondering if there is a better way to write this expression? Input text: multi-word | optional space = optional space | single word | ; optional carriage return --------------------------------- sometext=something; moretext = something; other text = something; E...more >>

Hi, I'm working on a multi-threaded application. I'm using ThreadPools. One of the requirements of the application is, if certain exception occurs all the counters have to be reset. I have noticed that some threads, even after resetting the counters, have the old values. Is ther...more >>

Hi, Maybe is a simple question but I found difficult to find the answer. Context: I am creating a site where designers ONLY touch the ASPX page and I.S. touch the code behind. Task: I have a simple page that list a number of offers based on info from the system (no dabatase, no bound ...more >>

Hey I have following "problem". int id = (int)SQlHelper.ExecuteScala(...) - it returns object ( which is int ) I get invalid cast. Convert.ToInt32(...) works ok. Why ? Jarod...more >>

Hi, while investigating the Framework dlls via Reflector, I found this code : System.Drawing.Graphics : public void DrawImage(Image image, int x, int y) { if (this == null) throw new ArgumentNullException("this"); ... } I was thinking of a mistake because from a...more >>

Hello. I have to know about file in folder with *.jpg extend. I use this fragment of code. DirectoryInfo directory; ArrayList file = new ArrayList(); directory = new DirectoryInfo(folderPAth); foreach( FileInfo dir in directory.GetFiles("*.jpg") ) { file.Add(dir.FullName); } What...more >>

What does it mean when the watch window shows a value in red? I ransacked the help file but couldn't find any mention of this. Cheers, Andy D ...more >>

Hi There I have a combo box with DropDownStyle = DropDownList The user wants a different string to appear in the display rectangle than from the strings in the list. So for example, the drop down list items might say One Two Three Then when I select 'One' and move focus away from ...more >>

Hello, I need to add a waiting loop to my program so I don't exit right a way. This loop has to be non-blocking (the program has to handle other events), and shouldn't take much resources (not a busy waiting). It is a command line program, so I don't get the event loop of any graphical lib...more >>

Hi all, I'm quite new in C# and have no expirience in sockets. I have no idea how to implement the following app, but for expirienced developer, I suppose it should be very trivial... I have to write any server component very urgent... The component has to synchronize between 3 clients for p...more >>

Suppose class X has some public properties, and class Y inherits from X. Is there a way that some of the public properties of X can be private (hidden) in Y (but still usable by the methods inherited from X that use them)? ...more >>

Its a bit tough to explain why I need this, so I wont. Consider it academic for now. I would like to detect if an exception is currently being thrown, but I cannot use a try statement. This is not what I want to do, but this will demonstrate what I want to do: try throw exception finally...more >>

Why can't switch used for objects, at least for static readonly fields it wold be nice. The Jit could certainly optimize this case because the addresses of static readonly variables are known at jit time. The thing is that is often used my own enum classes because I usually want to assign ...more >>

Hi, I posted a couple of days ago about the possibility of "simulating" in ..NET1.1 the nullable datatypes available in .NET2.0 - I'm nearly there, but require a bit more guidance. Basically, I have a class file which contains the various class definitions, as follows: using System; ...more >>

Hi! I need save data from DataTable to XML file. Is there any standard method do that? Thanks a lot ...more >>

-- Tech Servant James Pang. ...more >>

I am still "playing" with FileSystemWatcher, and have a question regarding FileSystemEventArgs. For example, the following method is called when a file is created: private void OnCreated(object source, FileSystemEventArgs e) { Console.WriteLine("OnCreated: FullPath=" + e.FullPath + "; Nam...more >>

If there are consecutive occurrences of characters from the given delimiter, String.Split() and Regex.Split() produce an empty string as the token that's between such consecutive occurrences. It sounds like making sense, but has anyone ever found this useful? Can this 'feature' be disabled? A...more >>

Hi, I was wondering if there is a method in the XML classes that allows you to encode a string so it is safe to stick in an XML file? I would have thought so, but can't find it. Please tell me I don't have to do a replace for each of the dissallowed characters!! Thanks...more >>

Hi all, I'm having a problem updating a simple change I've made to a Access 2000 table through databinding. The error I get is : An unhandled exception of type 'System.InvalidOperationException' occurred in system.data.dll Additional information: Update requires a valid InsertCom...more >>

Hi, I have a class CustomFileNameEditor that inherits from FileNameEditor I override the method "InitializeDialog" to customize the filter property When I run the application this method is called only one time. The problem is that the filter property can be change for each instance of the ...more >>

Hi Friends I want to make common connection string for database. I can not use Web config file, so please give idea excluding web.config file. Thanks. Alex ...more >>

Hi, Microsoft provided some naming conventions for namespace, classes, properties and etc. However I am looking for naming convention for keys in resource files for multiple languages. Any ideas? Thanks Joey ...more >>

I have add an xml file in my project. I would like to know how to create an xmldocument with it? thanks ...more >>

Hi, I'm fighting with it for a while... How can I change this control's background color (and only background color)? It should be easy and straightforward but I guess it is not... To be precised, I don't want to change TabPage's background :-/ What I mean is the background before any Ta...more >>