Hi all, Does anybody have any experience of running .Net windows forms controls from a html page on any other IIS port than 80 ? If so can anyone tell me why i cant get even the simplest control to display correctly. When IIS is on port 80 then everything is fine. rgds Dave. ...more >>

I'm having trouble updating from a datagrid. It's says "Concurrency violation: the UpdateCommand affected 0 records", though I can't see how it's related to "concurrency". I can insert and delete with no problem. Here's the code that's causing the problem: public void UpdateDataSource(Dancers....more >>

How do I make the bool column "unchecked" by default instead of "greyed out" (indeterminate)? Here's the code for the bool column: BoolColFinished = new DataGridBoolColumn(); BoolColFinished.MappingName = "finished"; BoolColFinished.HeaderText = "done"; BoolColFinished.FalseValue = false; Bo...more >>

I'm trying to figure out a way to catch when a file has been written to a directory. I currently have it where I can catch when the file begins writing, but this isn't helpful as I need to know when its done. Does anyone know the right combination of flags to use to catch when the file has bee...more >>

Hi This is Baskar here I have explained our problem below, please read this and help us to get it done We are developing a statistical project. Development environment specification is given belo Hardware : · Pentium III with 256 MB Ram, 20 GB H.D Software : · Microsoft W...more >>

Hi, there, I was doing experiment of C# OOP concepts and found a situation I can't figure it out. I have a base class Employee and a derived class Manager. I also have a method away from the two classes, test, which takes one parameter:an instance of Employee. I instantiated an object with Emp...more >>

Is there a difference between a constant like "12.34f" and "(float) 12.34"? In principle, at least, the latter is a double constant being cast to a float; while the two both generate actual constants, does the latter ACTUALLY do a conversion at compile time? That is, are there constants where...more >>

I have next interface: interface I { void F(); } And next class implements this interface: class MyClass : I { void F(){}; } What does the modifier have the method MyClass::F() by default?...more >>

Hello All. I have been doing a lot of .NET coding in VB.NET. I am very familiar with that language and have 2 books that already detail the .NET framework from a VB perspective. I want a C# book but do not want it to cover the .NET framework again. Is there a good book that covers mostly ...more >>

Hello to all the oop guru out there... I've been doing SOME programming in VB 6, and C# and Java.. I know well enough of C# and Java to get the job done. I was able to bounce back and forth depending on situations. But I am having some difficulties with grasping OOP(Object Oriented Programm...more >>

Hi, I have a GUI application that responds to events coming from an externaql application. In the implementing code for the event I need to create a GUI control and "parent" the control into the GUI. Doing this directly fails, it is not allowed to parent a control that was not created on the m...more >>

I was experimenting with implicit typing of integer constants, and found to my surprise that in MS C# 1.1 (VS.2003) you can write code like double Large = 18446744073709551615; This is quite a bit bigger than ulong.MaxValue - in fact, it's ulong.MaxValue * 2 + 1. I'm curious - could someo...more >>

Hi all, I'm trying to convert a string representing a path to Dos 8.3 notation. The code that I have works fine if the path exists, but it will not work if the path does not exist. I am looking for a way to convert a string representing a long file path (whether or not it exists) to short (dos ...more >>

Dear, I have a problem : I have a database which contains my data of hardware. The Id is a varchar and I want at my filling form that my user know which is the last one. So I made a store procedure in SQL Server with a input parameter (to select the right hardware e.g. PC for a computer, CD fo...more >>

Can anyone say definitively whether it is possible to draw in the title bar of a System.Windows.Form object and, if so, how? Thanks in advance, Chris Hough ...more >>

Can someone point me to a sample of a floating toolbar for a C# System.Windows.Form. Thanks in advance Chris Hough ...more >>

Hello, The methods Read() of the class StreamReader don't read the accentuated characters. When an accentuated character is present in a file, Read() skip it and read the following character. Missing something? Thanks for help P. Cloup ...more >>

I am trying to save a location to a database using the registry...I've been successful in this, but is there another way I can save this. I have searched on the net and have found that saving the info to an xml file is a good idea. My question is whether or not I can save this in a config file in C...more >>

i am a VB.NET beginner. i want to know how to show chinese character on VB.NET thanks...more >>

Hello All, Apologies to everyone, I posted this before but received no response. I feel someone must have come accross this problem before, and I need a solution desparately. I have written a C# program which downloads a file from a webserver on a daily basis. (http://www.myserver.com/my...more >>

Hi, How can I convert a String to a byte * pointer? I am using a third-party component that has functions that take byte * parameters. regards Tobias ...more >>

Hi, What's the easiest method to do that? I need to extract an image from Image type column and then display it. Should I store the image as an image file on a disk and then assign the image URL to this file? Or there is a easier way to do that? Does somebody have a source code for that? Th...more >>

Hi All, I am just wondering if there is a way to compare 2 XML nodes to see if the data between them is the same? The structure of the XML nodes are exactly the same I just want to know if the data between the two is different and I want to do this without using XSLT or anything of that nature,...more >>

Hi, I have 2 webform Webform1 & WebForm2 In Webform1 I have a button that when I click I want to first set a variable in WebForm2 & then open the Page. This is the code I have now which sets the variable but I cannot figure out how to make the page load Webform2 frm = new WebForm2(); ...more >>

Can a DataView be used directly without binding it to another control, such as a DataGrid. I would like to use RowFilter on a DataSet table and extract values from specific columns in rows returned by the filter. Is this possible? ...more >>

Hi, i have this dummy server which i would like to be a shared assembly: using System; using System.Reflection; using System.Runtime.CompilerServices; [assembly: AssemblyKeyFile(@"..\..\key.key")] namespace MySrv { public class MyServer { private long m_lNumber; public MyServe...more >>

Very strange, when I create a project as MOBILE APPLICATION FOR SMALL DEVICES and run this simple code, it fails to compile. int[] arr = new int[5]; for (int i = 0; i < arr.Length; i++) arr[i] = i * i; Is this a bug in .NET COMPACT framework. Please advise ASAP New to asp and .ne...more >>

Hello, Can somebody tell me how to do the following, please? I have written a 'GridReference' class to encapsulate map locations. It has a constructor that takes a couple of doubles, representing latitude and longitude, i.e. public GridReference(double latitude, double longitude) { ... ...more >>

I have a generic class similar to below that is responsible for returning classes as Interfaces, where IBook and ICard are known interfaces. public sealed class StoreManager { private StoreManager() { } public IBook GetBook() { return (IBook) new Book(); } public ICard GetC...more >>

Hi All, Here's the code: HttpWebRequest HttpWReq = (HttpWebRequest)WebRequest.Create("http://www.asdfasdfasdfafsd.com"); HttpWebResponse HttpWResp = (HttpWebResponse)HttpWReq.GetResponse(); Response.Write(HttpWResp.StatusCode); Here's what I would like it to retur...more >>

I want to have a Hashtable whose keys are strings and whose values are delegates. Well, ok, I have that: dels = new Hastable(); dels.Add( "key", new Foo1Delegate(MyFoo1) ); dels.Add( "key", new Foo2Delegate(MyFoo2) ); dels.Add( "key", new Foo3Delegate(MyFoo3) ); This works. BUT! I ...more >>

I Create many new formChat,and how Can I Enum each instance of FormChat,And get the title of each form? ...more >>

Below I've created an interface ... why do all implementations of the methods have to be public? What if I want them to be private or protected? public interface IOisWebPageStandard { void SomeMethod1(); void SomeMethod2(); void SomeMethod3(); } Thanks! Mark ...more >>

How do you determine what the Application Data folder would be in C#? I'm looking for the method that under normal circumstances should return "c:\Documents and Settings\<user>\Application Data\" ...more >>

I am trying to use an HttpWebRequest object to get resource from a website. Now, some of the files that I try to get may not exist. I would like to check for that condition. When I call GetResponse on files that do not exist, I get an exception. What I would like is not to have the exception ...more >>

Hi, I'm writing an application in which a client (C#/WinForms) and server (C#/service) interact with one another. The client establishes a "session" with the server but for scalability reasons there is not a one to one map between a session and a physical TCP connection. A client may disco...more >>

A little problem I am having and its driving me nuts. I have a datatable and I am adding a column to it on the fly. Then based on some other fields i add or not add a value to that column for each row. When I do update statement on DataAdapter I get "Specified cast is not valid". The DB column ...more >>

Mine treeview contains some levels, necessary to look a NODE, and it it can be in such a way in the first level how much in the four level, somebody can help me to make a function? ...more >>

I need to launch an MouseDown event for a control. How can I do that Thanx in advantage......more >>

Anyone else have this problem? (cpp project) Properties, linker, general, output file, edit Show macros, select any and click click insert -- no action. Anyone else see this? -- Bret Pehrson mailto:bret@infowest.com NOSPAM - Include this key in all e-mail correspondence <<38952rglkw...more >>

Hi I created a program using C#, which iterates files and displays these in a listview. However I would like to filter the files, so files won't be displayed if the current user hasn't "read access" any clever way to do that in the .NET Framework using C#? thanks /Dan ...more >>

I know this sounds strange but I am at a loss. I am calling a simple funtion that opens a connection to a SQL Server 2000 database and executes an Insert Statement. private void AddMinimunWageStipen(string payrollid,double amount) { System.Data.SqlClient.SqlConnection cn = null; System....more >>

I wish to reference call a method contained in my Windows Applications "main" form, from another class in the same namespace. Can anyone tell em how to do this please? TIA Bisley ...more >>

Hello, I tried to add menuitems to the systemmenu of my application, but I don't know how I can do this with C#. Can anythink help me? With C++ the systemmenu was available about the method "m_pMainWnd->GetSystemMenu()". And how is it with C#? Thanks in advance, Hubert ...more >>

Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Registeresd JIT debugger is not avaialble: After executing an application I get the Error: Registered JIT debugger is not available..An attempt to launch a jit debugger with the following command re...more >>

hello, I want to check to see if a certain registry key exists on the registry. What's the easiest way to do this. Here is what I am currently doing. private string registryKey = @"HKEY_LOCAL_MACHINE\Software\Techtracker" if(registryKey.Equals(Registry.Localmachine.CreateKey("Software").CreateK...more >>

My HttpModule is only executing on the first run of the application? What would cause this to happen? This is a module that I am using to Authenticate requests instead of a Global.asax. This is really baffling to me. I also tried Global.asax and got the same results, anybody else experience this...more >>

I'm trying to create an elevator sim, but I'm a newbie and I don't where to start. Could someone point me to the right direct? This program is just like one of those 2D games in the early 90's, boxes moving up and down with some music in the background ... Should I stick with C# system.drawing...more >>

Hi, Ok using Typed Datasets and using a table in that dataset that I am working on. What do I use in order to find a particular row and be able to update db with row changes? Do I use a dataview thats tied to datatable and have it find it that way or is their something else in or...more >>

Hi Everybod I want to update some controls in a form from another threads. I did it by passing the form to that thread and calling a delegate with Form1.Invoke, I want to have just one delegeate for all of my controls in the Form and dont define one delegate for each control. Some thing like to ha...more >>

Hey there. Does anyone know of a way (hack or not) to embed a DOS window in a c# windows form (like embedding a user control for example). The DOS window must give full command line access and be able to run console applications that interact with a user. Any help appreciated. Dave....more >>

Hi All, I would like to put a method for copy, cut and paste into my application and this seems to be easy enough except that it's not working the way i would like it to, I thought someone might be able to give me a bit of insight and for that I say Thank You in advance! this is what I have s...more >>

hello everybody is it possible to ask the user to write a math function (ie : y = ax + b) in a textbox, and use this function to plot the curve in a window (how do Mathematica guys manage this, since its possible in their program ??? thanks for your kind help philippe mordellet -))...more >>

Hi I am making a new listbox which will give me the ability to put in a title on one line, a number on the side for each item, and a description that would textwrap if the string length is bigger then the width of the listbox. I am having the problem when it comes to measuring the itemheight. I ha...more >>

Please check out our newest C# Training Video on C# OOP Inheritance and Polymorphism. Please rate it and leave us comments. http://www.vtmag.com Thanks, Wade Beasley Visual Training Magazine www.vtmag.com ...more >>

Pleas In ASP.NET applicatio 1.How can I add dropdownlist into datagrid when I press edit button? Is there any way to put dropdownlist in datagridcolumn instead textbox 2. I put paging to my datagrid but I don't know what code and where I need to write that when I press, lets say 2nd page, datas s...more >>

Hi, I am trying to implement a ping client that is multithreading. The approach I have used is to create a ping class which I instantiate from the main thread and which contains a method "SendPingAsync" that calls the Send method using an asynchronous delegate, so as to queue the send method ...more >>

Hi, I've got this code (which have beeb giving me lots of trouble...). It's a .NET webapplikation project, written in C# - and now with some Javescript written in to it: -------------------- protected override void Render(HtmlTextWriter w) { if (helpString!=null) { w.Write("<span class='to...more >>

hi all, i first posted this on http://msdn.microsoft.com/vcsharp/team/language/ask/default.aspx (ask a c# language designer) a couple of days ago, but no response so far... therefore, i am pasting it here as well... enjoy! (you can skip to the source at the end of the message if you like...) ...more >>

Hi to all I'm trying to read an old MS-DOS text file, using a StreamReader, but I can't retrieve the original text, I have used all the possible encoding UTF-7,UTF-8, Unicode and ASCII. How I can do it Thanks Abel...more >>