Hi, I have my data stored in a set of classes (or structs, doesn't matter), which I am trying to serialize. These classes are stored in an ArrayList, which serializes ok when all the objects in the list are of the same type. For example, if i have public class A { string A1; ...more >>

Couple questions: 1) I have an application using TCP sockets. When I make a call to BeginReceive(), is the callback I specify called in the current thread or from a new thread? 2) Similar to the first, with regards to events. When I actually call an event (with some number of delegates a...more >>

I'm about to rip out what little hair I have left; I have a class that uses a BinaryReader, and the data is getting munged. A subset of the code follows; I've removed the parts that aren't relevant. What's really strange is that it reads the file just fine until the 272nd call to the Read ...more >>

Hi, I would like to know if is possible to "know" which is the comboBox.SelectedIndex without "clicking any button". I used this int selectedIndex = comboBox2.SelectedIndex; to get the index, but it only works if this code is inside a button1_Click. What I would like to do is when...more >>

My Error is " Cannot implicitly convert type 'object' to'CIODMLib.CatAdmClass' " The code segment is as follows; public class Indexing { protected CIODMLib.AdminIndexServerClass admNew; protected CIODMLib.CatAdmClass catNew; public Indexing() { admNew = new CIODMLib.AdminI...more >>

This may sound stupid but I am having trouble figuring out this one. Any help would be appreciated. I have 3 classes ClassA & ClassB and ClassC From ClassC I would instantiate ClassA ClassA inturn uses/ instantiates ClassB I would like to create a variable in ClassA that can be accessed ...more >>

I'm trying to imprort an AVL Tree written in C++ to C# and I have a problem translating this statement: root_parent = (Node *) &this->_Root I'm using classes for my Nodes and so I can't use '&' with classes. So how do I write this in C#?...more >>

Hi, I have a comboBox and a textbox in my form. I already can display in a comboBox the department names; what I would like to do is display in a textbox the department ID related to the department name I chose from comboBox. below is the extract of the code: OleDbCommand myCommand...more >>

Hello all, I am trying to get all 'active' user details (username, firstname, lastname) from win 2003 AD server using System.DirectoryServices. It works fine. But it is too slow for getting all the 400 users. The following is the code i have written. I found that its doing s pretty quick ...more >>

I'd like the default text to show up in designer, and allow it to be changed to something else. I was able to change some of the other properties, but for some reason I'm having trouble with the text. Here's the code from my latest attempt. I initially tried just setting this.Text = "E&xit" ...more >>

I am using VS 2005 Beta and I have a Treeview UserControl that I built for a menu. I added an imageList to the control and added some icons that I want to associate with the control. When I build the solution and view the UserControl placed on a form in the designer, I can see the icons. ...more >>

int k = 8; elsewhere in the code, I need to k to be -8. I could do this: int negativeVal = 0 - k; is there a better way? Thanks! ...more >>

Is there a way using DateTime.Parse to validate a date in the following format? mm/dd/yyyy Thanks...more >>

hi there, in VB LoadXML(str) returns true or false so that you can do different coding when the str is XML or not, but in C# LoadXML doesn't have return but only throw exception if str is not XML document. How would I do if I want to do my own code if str is not an XML? thanks!...more >>

Is there a way, using stock .net framework functionality, to open a tcp connection over an SSL channel? I'd rather not get into buying libraries, etc. Java has the javax.net.ssl.* objects, and I'm not finding an equivalent in c#. Note this is a socket connection, not an HTTPS connection. ...more >>

Say I open an IE window and call the Navigate() method. A web page opens. I use a delegate to capture the DocumentComplete and NavigateComplete2 events. However, they fire slightly before the page completely loads. This article addresses the above issues for OnBeforeNavigate2 event: http:...more >>

I've created a TableStyle in the collection of TableStyles. Now, how do I get it to apply to the DataGrid? ...more >>

I have an application that uses a timer. I've created a function called TickEvent that I "assigned" to the timer1.Tick event: this.timer1.Interval = 1000; this.timer1.Tick += new System.EventHandler(this.TickEvent); .... private void TickEvent(object sender, System.EventArgs e) { liSecond...more >>

Hi I have lots applications are already written by C++. It 's easy to use PostMessage in one application and catch this message in another application's WndProc Function. Since .net have some powerful library. I use C# to develop new application. But I do not know how to using simlar func...more >>

Can someone tell me the correct method of casting and object at run time. Here is a sample of what I'm trying to do. classA acts as a base for classes that execute code in classes derived from ProBase. How do I property cast the derived classes from ProBase during runtime so that I can acce...more >>

RegEx Help Need RegEx for extracting the XY*13*17*22*90 from the given document. ............ AB*1*1*12*9 XY*13*17*22*90 BS*1*1*4*9 ............ TIA ...more >>

Hello I'm new to this Regular Expression and need some help. I want to restrict what the user types in a text box. The User can type only A-Z, a-z, 0-9, spaces, comma, dash, period, single and double quotes. If it has anything other than that, I need to display message. How would I do th...more >>

I have a subclass of TextBox, and I want to check that whenever the text is changed the information in there is still a valid number. I thought that overriding KeyPress with the following would work: string oldText = this.Text; base.OnKeyPress (e); try { decimal.Parse(this.Text); } ca...more >>

I've been tracking down a memory leak using DevPartner 7.2 and what I am seeing is that calling XmlDocument.Load() leaks A LOT of memory. The following code is called when I click a button on my test form. (this is test code I wrote to confirm the bug, not my actual code) private void butt...more >>

Hello, I've developed a solution with VS2003, which automates Excel XP. I created a setup project featuring install of the Primary Interop Assembly 'microsoft.office.interop.excel.dll' in the GAC. I added a condition: If the dll already exists (correct version) in the GAC then a new install...more >>

First, my question: Should I use Write or BeginWrite (sync or async) to stream data to my clients. Details: On the server I have a custom circular data buffer that receives byte array data representing data structures at a rate of 30ms. On a thread seperate from that which Enqueues data ...more >>

Would anyone know how I might access to the vbCrLf constant. I'd like to use teh following bit of VB code in C#: strFoo.Text.Replace(vbCrLf, chr(10) ) Thanks in advance, Michael McD Ps and what id the C# exuivilent of chr(10) is it (char) 10?...more >>

First, my question: Should I use Write or BeginWrite (sync or async) to stream data to my clients over a TCPClient connection. Details: On the server I have a custom circular data buffer that receives byte array data representing data structures at a rate of 30ms. On a thread seperate fr...more >>

After searching newsgroups and discussions, i came to the following conclusion. Even though PixelFormat.Format16bppGrayScale is defined, it's NOT and will NEVER be supported by the .NET framework. For our business (medical imaging), this is very disappointing. 16 bit gray is most common imagef...more >>

Hi all, My problem is as follows: I have installed the latest NDOC (1.3). I see that some of the XML comments are not getting included in the CHM file. These comments are there in the XML files, but not in the final output. What could be going wrong? Thanks, Ssapthar ...more >>

Hey, I have a string (an document.rtf loaded in a stream and then via streamreader.ReadToEnd i filled the string) Ex. of the string " My name is &replacename& My address is &replaceadress& ... " Now i want just to take out of the names between the & and i want to put then in an arra...more >>

Hi How to convert a string "11022005" to a specific date format-02/11/2005...more >>

HI, I'm trying to connect to a db using ADO.NET in C#, but it generate error.. I want to display in a combobox the values of one of the field. (department name) I'm new in C#, so I don't know what happen to the code below: OleDbConnection objConnection = new OleDbConnection("Pr...more >>

Hi, I have more than one forms in my program, and I would like to for example, in form1, I will call form2 and in form2 it will call form3. But the problem is when I call form2.Show, it does show the form2, but how can I unload form1? If I put form1.close, it will close everything. :(...more >>

If I'm doing some reflection on System.Windows.Forms.dll in the System.Windows.Forms.ScrollableControl class one of the methods get_Controls has a return type of System.Windows.Forms.Control+ControlCollection Does anybody know what the "+" represents? get it also on get_Dockpadding get...more >>

Hi, I need to implement simple runtime form designer,and I would like to ask can and should I use the win form form designer? Thanks in advance. ...more >>

Hi, After implementing ICustomTypeDescriptor on my UserControl When ever I drop the control it moved to the none visual area Which properties or attributes should I add to my Descriptors collection in order to make my control Visual again? Thanks in advance ...more >>

Greetings, In my C# project, I'm using a third-party Opensource library... in source code form. I mean no assemblies, just pure source code. It allows me to add new application-specific functionality to that library, finetune it, and see how things work. Well, the problem is that the l...more >>

Hello: I would like to know the best way to spend idle cycles while waiting for a thread to complete. I've seen numerous conversations on this group about how unnatural Application.DoEvents() is, but can't find a good recommendation on what I *should* do. <Background> I have inherited a...more >>

Hello, I am having trouble understanding how to navigate a DataSet table... - maybe someone can steer me in the right direction? Say you've read an XML document into a DataSet ("myDataSet") and then filled a DataTable by doing: myDataSet.Tables["situation"]; and the XML looks this way: ......more >>

Hi I'm writing an asp.net application in delphi 2005. App is secured by the hasp hardware key. On my computer everything works fine but when I put the app on the test computer (without delphi) appliaction cannot connect to the hasp key. Further more I can't even call the Login method - ...more >>

IDE: vs .NET 2003 OS: xp pro sp2 I need to create a class which can hold a x number of objects... Think of the class as ArrayList, it can hold x number of objects... But using the ArrayList doesn't suit entirely here, because I need to add some additional properties / methods to this class...more >>

On running a console app from Windows Server 2003 with Debugger.Break() makes an Abort Retry Ignore popup appear stating that a user defined breakpoint is reached. Works the same in both Release and Debug Builds. How to avoid this ? Thank You rawCoder ...more >>

Hello, I have an Excel spreadsheet do calculate stuff. When I put that sheet on a target machine and access it with C#, do I need an Office/Excel license on that target machine? Thanks Frank ...more >>

CreateProductForm f = new CreateProductForm(); f.Parent = this; f.Show(); I'm trying to show a child form on the smartphone. It works fine when i just call f.Show() but as soon as I set f.Parrent, the form never displays. Can anyone help me. I need to be able to close the parent f...more >>

Hi all, As some special need , I have to make a com component in c#,but I don't know how to make a com object event, I had declared a event interface. Like this: delegate void EventHandler(object sender,EventArgs e); [Guid("xxxxx-xxxx"), public interface Imethod:Ievent { [DispId(1)] v...more >>

Hello, I have an Excel spreadsheet do calculate stuff. When I put that sheet on a target machine and access it with C#, do I need an Office/Excel license on that target machine? Thanks Frank ...more >>

Hi, Which is the default UITypeEditor for Point in PropertyGrid? Should i write my own UITypeEditor? Thanks in advance ...more >>

Hello, I'm new in C# and .net, I'm doing the Walkthrough: Creating a Web User Control that comes with Visual Studio .Net 2003. In this Walkthrough you create a User Control and call it from a WebForm, when executing it I get: Compiler Error Message: CS0234: The type or namespace name 'Globa...more >>

I already posted this in the ASP.NET framework group, but no one could help me there. Maybe someone in here has encountered this problem: I have a very weird problem with an ASP.NET page I developed in Visual Studio .Net 2003: The page has an asp panel which contains a user control (to kee...more >>

I want to build a custom control that will display a signal indicator. Basically I have 4 images and depending on the current state, I will display one of these images on the screen. I want to build it as a custom control so i can add it to multiple pages of the form. The control should also ...more >>

Hi, I have a main application (WinForms). I developed a DLL with some utility classes. The App uses these Utility classes...creates objects of them and then calls their public functions. Now, while typing out the function call (say objUtility.Func1(args) ), there is a tooltip that appears ...more >>