What am I missing? I am trying to dynamically create a button... Button myButton = new Button(); myButton.Name="ButtonX"; ...more >>

Hi all i am having problem in c# class. I have two classes one nexted inside another. What i want is to have one command function to be defined in outerlevel class and to be accessiable in nested class. Is it possible. Because my function is public but i am not able to access it in nested cla...more >>

Hi! I have a form containing a listbox control. The control is configured to autopostback. When I manually select a new item in the list I'm getting properties for the selected item displayed in various textboxes and labels. My problem is that I'd like to automatically display the propertie...more >>

I am currently calling a windows form from my vb6 app. I need to know the best practice for handling the gui thread. I wish to call the form and have it behave as a modal dialog and obtain a notification/return value when the form is disposed. Is this possible? If so how? Many thanks ...more >>

This is probably common knowledge to .Net gurus, but please bear with me while I share a discovery with the group... I needed to create a public lock on a class, as follows... class Locked { ..... public object lockObject = new object(); } Next I wanted to consider hiding the loc...more >>

Well, this doesn't seem to work at all now :-( I've created a new user control. I've added a few labels to it. I've compiled, and it's appeared in my toolbox. Drag it onto a form, and I get "Failed to load toolbox item 'player'. It will be removed from the toolbox". It happened in my la...more >>

Im am writing an application that will looks similar to Outlook or a help file, i.e tree structure on left with right hand side pane showing data. It is split into two panes.The Left pane has a treeview. When the nodes in the tree are selected data is shown in the right pane. I am using a tree...more >>

Hi World, We have been developing Engineering software in Delphi 3,4,5,6,7 for a few years now. This morning we had a discussion about OOP and re-programming the software to which the question came up, should we stay with Delphi and go with Delphi 2005 or not. I'm interested to here everyone'...more >>

I would like to store some nodes & child nodes in the app.config file and was wondering if there is a way to read these values in as a config file rather than an xml. Thanks, Joe ...more >>

I am executing OSQL using System.Diagnostic.Process with the following parameters: -S <servername> -E -Q "BACKUP DATABASE <databasename> to DISK='E:\Temp\Now.bak'" This works from command line but when I execute this from my ASP.Net app it shows this error: [Shared Memory]SSL Security er...more >>

Recently I have had to use a value type for a complex structure because I don't know how to override the = operator. Can the operator ever be overloaded? Or can inheritance be used with value types? ...more >>

I want to allow the user to upload a file to a server from my windows form and then display that file name in a grid. When the user clicks on the file name i want the user to be able to open the file. I can I do that? I've done something similiar to this in asp.net but not windows form. I'm ...more >>

Hi, I am looking at a way in C# to change the permissions of a file to localmachine\Users (Modify). Thanks Eric...more >>

Hi, I have a window based program. One of the form has several textboxes and a datagrid. The textboxes are bind to the same dataset table as the datagrid and the text changes to reflect different row selected in the datagrid. I want to save the changes that user make in the textboxes when...more >>

Here's my problem. I've created a windows service using the Win32 app instead of the .NET framework's System.ServiceProcess.ServiceBase and I'm trying to use the RegisterServiceCtrlHandler win32 API call. It works just fine when I compile all my code and classes in a normal executable. However, ...more >>

I'm using late binding to automate to Outlook and I'm getting an ArgumentException when I create a delegate. The arguments I pass seem valid. This is my code: [CODE] Type oType = Type.GetTypeFromProgID("Outlook.Application"); oApp = Activator.CreateInstance(oType); oInspectors = oApp.GetT...more >>

I have a C# windows forms app where I am using a FolderBrowserControl. It works great much of the time, BUT... When users try to browse/select a folder that contains MANY (thousands and thousands) subdirectories and files, it just sits there, sometimes for as much as thirty minutes, before it ...more >>

I haven't come across an elegant way to do this yet, and would like to know what other people have come up with. There are two tables: CREATE TABLE EmployeeStatus ( pkId int not null primary key identity, status varchar( 50 ) not null ) CREATE TABLE Employees ( pkId int not nul...more >>

I've looked through all the event members of a datagrid but I can't find one that's for when user selects a different row in the datagrid. How does one catch this type of event? Thanks, Alpha...more >>

I am writing an installer for our application. The installer places the application .exe in the install directory and then creates a \bin subfolder and places all .dlls in the \bin subfolder. When we run the application it throws a "file not found" exception upon attempted loading of the...more >>

Everything I've read so far states you can't inherit or extend these dialogs because they're "sealed". I considered building my own custom control, but I haven't been able to find: 1) How to add a "Places Bar" to a form 2) How to hook a Combo Box into System locations like the existing Ope...more >>

Hello, I'm trying to get the current date/time from a (S)NTP server. It works with UdpClient class, but not with TcpClient class. I want to use TcpClient because i can set timeout values for reading/writing operations. The connect method generate a SocketException (10060 : timeout error) :...more >>

I am draggin an object into a user control that contains a tree view and want to insert the object into the tree. The problem I have is that the X, Y(coordinates for the form that contains the user control) are not within the underlying treeview control. Isn't there a calculation that I can...more >>

I have several textboxes that I need to chang the text when the selection row is changed in a datagrid. I have the following code. This textbox displayes the initial selection but when I click on different rows in the datagrid, the textbox content doesn't change to reflect the change. How c...more >>

Hello All, As a VB6/C/C++ (and some Java) developer, I've been toying with c# for the last couple of weeks. I'm currently trying to create a grid of 3x3 with each cell containing numbers from 1 to 9. The idea is that if you push one of the numbers, it gets 'blown up' to the full size of the c...more >>

Hi, I have a program which performs some calculations and then updates a table. I tested my program on a few thousand rows, worked good, no issues, update worked. When I test on larger data - up into the millions of rows the calculation part is fine and fairly quick but the table update is ver,...more >>

How can I have a box (maybe a picture box or a panel or something?) that will display all of the contents of a particular folder and show the picture files as thumbnails along with the name of the file right below them? I then need to be able to drag each item onto another picture box (or s...more >>

Hello! Everytime I recompile a program with csc, I have to go to ".NET Framework 2.0 Configuration" / Runtime Security Policy and increase the assembly trust to make it run properly. How can I automate this process, or even disable the security restrictions for, let's say - a whole directory...more >>

I have a gui app in which i have various forms. I would like to make it so these forms become sort of "add on" featuers. so you necessarily don t have to iinclude the forms with the original exe but you can put them in the same directory later on and have them loaded etc. how can i accomplis...more >>

Sorry this might really a very basic question.. not hitting me now...What am I doing wrong??? public class Textbox2 : Textbox1 { public Textbox2() --> gives a error No overload for method 'Textbox1' takes '0' arguments { } } public class Textbox1 : System.Wi...more >>

Is there any easy way to read into a dataset a file that was created from a BCP command. The file is in a fixed length format. I would also like to be able to write out a dataset to the same type of file structure. The obvious solution would be to use XML file processing however that is n...more >>

Hi All, How do I know what Service Pack's are installed on my Production Machines...I have just the .net Framework installed on it no Visual Studio on them. TIA ...more >>

I have a form to generate a report. On the form are several textboxes and a "Generate" button. I would like to have the button grayed (not enabled), unless the data in each of the dependant textboxes is valid. What is the proper procedure for doing this? It seems the Validating and Validated...more >>

I've got an app that plays video using the ActiveMovie COM stuff. I'm using the FilgraphManagerClass to play the movie and I'm trying to get an image from the currently displayed scene. The call to do it is FilgraphManagerClass.GetCurrentImage(ref int bufferSize, out int dibImage) Now, ...more >>

This is my code: FileStream fs = new FileStream(@"C:\Documents and Settings\Berdoues\Mes documents\VisualStudioProjects\Application_Test_WindowsForm\LoadAssembly\CaptureControl.exe",FileMode.Open); BinaryReader br = new BinaryReader(fs); byte[] byteload = br.ReadBytes(Convert.ToInt32(fs.Length))...more >>

I'm doig a test using XP English with LocalSettings set to Russian. When trying to open an XML file with ANSI encoding, I get errors. When I change the encoding to UTF8, I can read the file successfully. I'm wondering why this happens. Any help is appreciated. thanks Sunit ...more >>

My WinForm application is activating menus based on the user's roles in AD. I've created the groups to use the same 3 letter abbreviation. Is there a way to do something like this: mnuPlanning.Enabled = wp.IsInRole(@"domain\ibb*"); or mnuPlanning.Enabled = wp.IsInRole(@"domain\ibb%"); I'm...more >>

Hi, I am using asp.net to make a web application. IE 6 has the best display. Firefox reports server error – can not display at all. Netscape displays all 3 columns in one column (one by one). Any idea? Thanks. -Dale ...more >>

Hi, I am using StreamWriter to write text files now. What is the easiest way to write a word table to a file? XML + style? Thanks. -Dale ...more >>

Say I have a class called TabManager, which has an array of Tab objects? There is no inheritance or other relationship between them apart from the TabManager instantiating the tab objects and holding them in an array. How can the Tab objects call the methods and access the properties of its TabM...more >>

Hello All can any one help me where is the windows atom table and how to navigate it, and how to add and delete values from it thx ...more >>

How do you execute a DTS package from C#? I have some code that doesn't work because the structured storage file cannot be found : [MTAThread] static void Main(string[] args) { // TODO: Add code to start application here Package2Class package = new Package2Class(); object p...more >>

Need some help! I have a nested collection like so: Grandparent .Parent .Child Which is going to be bound to a datagrid in a flat view: Grandparent1 | Parent1 | Child1 Grandparent1 | Parent1 | Child2 Grandparent1 | Parent2 | Child3 Grandparent1 | Parent2 | Child4 Grandparent2 | Pare...more >>

Hi, If I have an abstract class with variables in it, for example: public abstract class A { private int A; private int B; public abstract void DoSomething(); } Do I create the Property methods in the abstract class or the inheriting class, for example public class B ...more >>

Hi, I need have a base class that enforces the derived class to have a constructor with a string parameter in it. If there is no constructor of that type then it should ideally give me a compilation error. Is there a way to do this. public class Base { //some methods. } public cla...more >>

All I would like is one example of working code that does nothing more than submit a search criteria to Google and print to console the resulting page of found items. To make it easier, below is my code. Simply correct it in place so that I may copy/paste it back into the IDE and run it. Pl...more >>

I am brand new to this programming especially C#. I am confused (at the moment). I have bought two books to get started to learn C# language and Visual C#.net 2003 in 24 hours. Which is the best to learn the straight language or the VS techniques??? I am using VS2005 team suite, but have come ...more >>

This is where my OO skills aren't quite honed yet. Some of you might remember the little game program I was working on for fun. I had several methods written to determine a character's class, race, etc. My question is, should I put all those questions in a Character base class (so that all s...more >>

Hi All, I've written a console app, which sends and recieves data across a NetworkStream and displays output to the console. All is great. I'm now modifying it to be a windows app, but the thing blocks while waiting to recieve data. So, I want to run it in a thread. However, the object t...more >>

Wondering how difficult this will be to do. The principle being that the application will load a URL from a configuration file at runtime and then add a reference to the web service. Only having ever added a Web Reference from Visual Studio at buildtime i'm unsure of how to perform this task. ...more >>

Hi, In my ASP.Net 1.1, C#, I have two windows forms, one is frmContactPerson, another is frmContactAddress. These two forms has many same Controls, except in one GroupBox they have different TextBoxes showing different data from datatable ContactPerson and ContactAddress respectively. Now...more >>

Hi all, How can I import a csv file and display as a datagrid directly. Now, I am using datatable to bind to datagrid, but I got the problem for sorting and paging, i don't know how to make a sorting and paging. Do I need to store data into dataset and sqldataadapter? I am using c#. Than...more >>

Sorry if this is already in the FAQ or elsewhere. Looking for a book/books recommendation for c#/.net specifically for building multi-tier web applications. Im a mid-level J2EE developer and would like to get up to speed with .NET. Thanks in advance! ...more >>

Hello, I'm looking for a control that can display rows and columns similar to a table but highlight the entire row during selection? Listbox highlights the entire row but doesn't support multiple columns. DataGrid on the other hand supports multiple columns but I can't able to highlight the e...more >>

Hi all, I wonder how we can convert or getting a date in ISO 8601 Format!? Regards, FF ...more >>

I haven't had much experience with it, so I'm wondering, is VWD something you can use to create a personal website, or would Dreamweaver, etc. be better for that sort of thing?...more >>

Buongiorno a tutti, ho un problema che mi fa impazzire :-( Ho creato un WebService per sincronizzare una cartella nel mio PC locale con il mio sito internet. La cartella contiene dei file PDF. Premetto che nei test nel mio PC tutto funziona, quando sincronizzo la cartella remota tutto OK...more >>

Hi all, in my WinForm app I use a TreeView as left menu. In the last months I made several modification to the nodes (added, removed, renamed, etc, etc). When I install the app (using a VS.NET 2003 install project) on some PCs the most uptodate treevire is shown while on other th...more >>

Hi! I have written a simple validating event for a couple of textbox's on a form. They validate just fine when leaving the form, now for the problem. If i click a button to begin execution, i want to validate all the textforms before it can proceed. I have tried to send validate to the f...more >>