Hi, Can anyone please explain to me how it's possible to make an object from an Interface. I thought Interfaces was just for inheritance, but in the following code I have made an instance of a Interface, myEnumerator. The code unchecks all checked items in a checkedListBox. IEnumerator myE...more >>

Dear NG, I have Crystal Reports working to a file and directly to the printer with the following: private void mnuInvRep1301_Click(object sender, System.EventArgs e) { ReportDocument report = new ReportDocument(); report.Load("C:\\database\\MCS-3-SQL\\MCS-3inC#\\INV\\Reports\\rpt13...more >>

hi, i have two datagrid control with binded records.i need to restrict the user from multiselection whether using mouse or keyboard. To be consize. user can select only one record(row) from any of the datagrid. if he is trying to select a record from scond datagrid while keeping first ...more >>

I have this parameter: public string Title { get{return m_sTitle;} set{m_sTitle = value;} } I want to do this: Object foo = new Object; foo.Title.IsRequired(); ...more >>

Hello... I have added a brief section on the challenges of interface design at: http://www.geocities.com/jeff_louie/OOP/oop13.htm#Interfaces Comments appreciated. Regards, Jeff *** Sent via Developersdex http://www.developersdex.com *** Don't just participate in USENET...get rewarded fo...more >>

Does this cause boxing to occur? class Test { void myFunc(ref int theInt) { theInt = 10; } Test() { int x = 0; myFunc(ref x); } } So is x being boxed into an Object instance and passed by reference that way and then unboxed back into an int? Or is it like ...more >>

hello........ I'm developing a client software. i'm now actually using an absolute path for my connection string in my program abd this will be a problem when i want to deploy it into another computer. how do i solve this? Thank you...more >>

Is there a way in 2.0 to say that a generic can not be applied to a value type? public class Unique<T> where T: new() { private static T cache = default(T); public static T Instance { get { if (cache == null) ...more >>

VB .NET I would like to know how to loop through each row in a data set and get a value from a colum in the data set. My data set has multiple columns. I know I have to use the datarow class but I'm not sure how to do this. I would like to use a for each loop. Any help would be appreciated....more >>

Hi, I was trying to create a new class derived from System.Net.Sockets.Socket and it seemed to be working until I tried to use the accept method. The accept method returns a Socket object and for some reason you can't typecast it as the derived class. Everything else worked fine, I was able to ...more >>

I select a row(Row A) on a DataGrid controller. Row A is highlighting. And then I make the current record jumping to another row(Row B) by programming, for example, calling MoveLast. However, although Row B gets focus now, the highlighting is still on Row A. I want Row B to get highlighting a...more >>

PLEASE HELP, I already seat on it a vouple of days, but no solution yet. Someone, Please help!!! I have to manage some device, working with RS422 (have a converter). From one place it working form my program it does not! Architecture: ----------- device |RX]-------RS422------|converter]---...more >>

I have a set of data within my application and I'd like to use a pseudo HTML Table in the reports. Is there a way of creating an HTML file, rendering this to a Bitmap, placing the bitmap on the page and then continuing with the printing - adding various other graphics etc. I've not seen thi...more >>

Hi Does someone have already integrated that application block in a project. Is the design of that block good or not ? Usable or not ? I'm just wondering if I go with it or with my own (It's for a c# winform project). Thanks for any advice. Alexandre ...more >>

Hi, I´m trying to create a list control that needs to be binded to a generic ArrayList. But I have a problem on updating my control when the list is changed outside my control. Can anyone help me with this matter ? Can I attach some sort of Event when the list is changed ? Than...more >>

Hi All, I've got a problem where my application loads an assembly in the running AppDomain when it shouldn't. Ok, I've got a RemotingHost application that configs the remoting stuff and then... asks the user for a list of .net DLLs. the app then copies a these assemblies to a cache folder...more >>

Hi, Is there a way to read Component Services /IIS settings values using c# ? I am specifically interested in the COM Transaction timeout value and the IIS connection timeout value. Are these in any Registry keys or config files that I can read ? Thanks in advance Aniket ...more >>

I have an application written in C# using VS 2003 with MSDE as the database. The reports use Crystal as provided with VS. The application and reports work correctly under WinXP, but the reports do not work under Win98. I have read the info re dbghelp.dll and CRQE.dll under Win98 ad have ...more >>

Hi all I would appreciate some help with a program I have written from the Sams teach your self c# book. I have checked my code several times and even rewritten it. when I compile (Sharp develop) I get the following error : ------ Build started: Project: Pic view 2 Configuration: Debug ---...more >>

Does anyone know how a component can be cached server side. I know how to cache a component and it works, but I think this is client side caching, because it works with the current HttpContext. .... Cache cache = HttpContext.Current.Cache; Table table; // Get the table from the cache table ...more >>

I have a variety of console application (written with C++ 6) that I decided to unite under 1 GUI written in C#. On the press of the button the app collects the information from the textboxes and then passes that to what I thought would be a system() call, except that there's apparently no sy...more >>

Hello all, I'm led to believe that the .Net framework offers intelligent string comparison such that é follows e in an alphabetic sort rather than appearing after z, for example. Does this mean that there is a mechanism for comparing strings that may or may not have accents and having them shown...more >>

Can anyone tell me what the difference is? Where I might need one over the other? I know in VB there was a panel and no groupBox in MFC there was a groupBox and no panel But in C# they are both available and seem identical Just curious Vin ...more >>

I am a bit confused as to why conversion from float/double to int is handled in c# in the way that it is. It differs from my implementation of C and C++ in a suprising way (to me). Here is a code snippet to reproduce my suprise: // c# int max = int.MaxValue; Console.Out.WriteLine("max = " ...more >>

Hi I need to perform simple comunication towards my Windows.Forms clients. Service running on server needs to contact/notify client apps running in the network if certain event accurs. Upon this notification client would contact the server (this is not within the scope of this question). ...more >>

I have a problem using the samples that have "using System.WinForms;" Changing it to System.Windows.Forms does not work. Somehow in such projects System does not have ".Forms" . Is there a way to fix the problem? Thanks, Dave....more >>

Hello, Well, I don't know if this is the right forum to post this query, but I didn't find any other suitable one. I am developing a program to access mails from a pop3 server's mailbox. For this I am using System.Net.Sockets namespace. I am able to get all the messages from the ser...more >>

Hello, The .NET application I have just installed at a client web site is throwing a strange error. At first the applications works without any problems, but after 10 mins or so Access denied error messages are thrown. The application, web based, late binds to a series of assemblies, none o...more >>

I like some of the auto-formatting features of VB.NET (god help me) but I really prefer to use CSharp (C#) is there any way to get the features of auto-indenting, auto-capitalization, and advanced intellisense like VB does? ...more >>

Hi, I intherited Button and I created new class (myButton) public class myButton: System.Windows.Button { .... } I want declare new event. (BeforeClick) This event runs before Buttons click event. In some case in this event, click event doesn't run. For example; (in BeforeClick even...more >>

Hello, Can someone could help me with the following: I have a directory (e.g.: C:\myTest) and I want to retrieve the UNC share name that has been assigned to it (or null if no share is defined for this particular directory). My first guess was to look at the DirectoryInfo Class. However, ...more >>

How can data be stored in comboboxes similar to html pulldowns? I know I can access the data of the combobox either by the items text or by its index. However, I would like to have a pulldown representing something like: Text: 1 minute; Value: 1 Text: 5 minutes; Value: 5 Text: 1 hour; Value...more >>

Hi, What is the best way to show a 'form' inside another form. Or could I better use a user-control? I currently don't want MDI, rather a wizard-style interface... - Joris ...more >>

hi; i fill my dataset from sql server by adaptor automatically... i want to retrive any element in my data row by colom name... let say i have a datatable like ID NAME SURNAME 1 sadun sevingen 2 cem sevingen this code is not valid but lets say i want to take ...more >>

Hi there We have a CAD application written in C# that consists of a series of shapes. We need to product a range of reports for a range of different paper sizes (letter size to 36" paper). Each report contains a Table of Data together with a scaled picture of the shapes, filled in different...more >>

I am using MailMessage (CDOSYS) to send emails. I would like to turn off the SMTP service (it's on the local machine) and look at the emails in the pickup folder before they get sent out. However, since it is connecting using the port, I will get an error if I turn off the SMTP service. I need t...more >>

I'm new to C# and so far I'm pretty happy with the language and the design behind it. My only real concern is about performance. I wanted to ask a question about how a program you build in Visual studio gets handled. After it is built you have what looks like an normal win32 exe. And at lea...more >>

Hi, I have a simple Problem. I want to center a dialog on a panel of an application. I do the following: public class MyDialog : System.Windows.Forms.Form { private Panel m_ParentPanel; public MyDialog(Panel panel) { this.m_ParentPanel = panel; // some controls } ...more >>

I have strings returned from a config file that contain zero or more name/value pairs using a pattern like "name = value;" I want to extract the value of a given name (passwords, etc.). I want this to ignore whitespace in the pattern match and not be case sensitive. Anyone have a pattern tha...more >>

How can I access form with handle? SetFormCaption(System.IntPtr FormHandle, string FormCaption) { //set form caption here } ...more >>

I am trying to read the memory being used by a process but I can't quite figure out how to do it (or if it's even possible). I can get a reference to the process using Process.GetProcessesByName and I can get the base address using Process.MainModule.BaseAddress (which returns a IntPtr). I ...more >>

Hi, I have code from a previous project that I've packaged into a dll in c++. I'm now trying to call functions within that c++ dll from my c# code. I've managed to get it to work for ints and other basic types but now I'm trying to pass a pointer to a function but I can't figure out a way...more >>

Hi, I have a C++ console application and I need to integrate it with a C#.NET application. Could you refer me to a resource or link that shows me what kins of options do I have to integrate a C# application with a C++ console app? Thanks, Alan ...more >>

Hi, Can someone please send me an example or a link related to the topic ... Thanx, Neven ...more >>

Hi all I am trying to contvert a message from my server to unicode. I initially got a base64 endoced byte[] message. After some debugging I saw the base64 string had "\0" in the end wich resulted in an error when converting from base64. So I cut it away and can now see my string in byte[]. I ...more >>

Hello everyone, I have had a look at some newsgroup articles but cannot seem to find anything to hekp me so please bear with me if this is a simple question. I am using Regular expressions for the first time and am trying out a simnple expression which is not working properly. The phras...more >>

Hello, In my appliction I try to pop up a progress dialog box while an analysis is being run: //method progress window public void Run(IWin32Window parent) { Thread analysisThread = new Thread(new ThreadStart(runAnalysis)); analysisThread.Start(); ShowDialog(parent); } so you see...more >>

I have a C# app that sends an excel file as an attachment. The only problem is that it prompts the user with a dailog box asking if really necessary to send it - saying it could possibly be a virus if not intended for email... I have Windows 2000 and would really want to disable this manual inte...more >>

Is there anyway to share a image list between multiple forms at design time? I am a former Delphi user and it seems odd that this is not possible with C#. I have been able to do it at run time, but it is clunky at best. Thanks, -- Tony Caduto Inexpensive Corporate Messaging AM Softwa...more >>

Hi, I want show all components names on form when I press button. I wrote this code button's.onclick event: for (int i = 0; i<=this.components.Components.count - 1; i++) MessageBox.Show(this.components.Components[i].ToString()); But when I click button, system show error message. How...more >>

In Visual C++ I Can do This //------------------- //Name: myMethod() //Desc: This Method Does Somthing Cool And Returns True Or False //------------------- bool Obj::myMethod() {} When I went to use this method and typed: obj.m The little intellisense window thing would show my method ...more >>

I have a worker thread, and the thread needs to listen to WinForms Control's SizeChanged event. Here's my code. Control c = ...; if (c.InvokeRequired) { c.BeginInvoke(===don't know how to write here===); } else { c.SizeChanged += new EventHandler(this.OnOwnerSizeChanged); } I know I...more >>

Hy everyone... How can I do to add a link to a program when the user clicks with the right button on a file at the windows explorer?? Thank's -- André Almeida Maldonado - Brazilian - Com orgulho!...more >>

All, I have a byte[] array that I save as a file to disk, is there anyway of saving the file as a transaction. For example I save the file to disk and virus scan it, if no virus is found I commit the transaction, if a virus is found I abort the transaction and the file is never written. ...more >>

I am trying to display a number of images and have them scale when the window is resized. I have all the code to draw the window in an OnPaint() override. However, it only draws correctly the first time it is displayed. When I resize the window, it keeps the remnants of the first window and...more >>

Hello, I have imported an ActiveX control and I'm trying to use it inside a C# class. The problem is that since the event handlers are required to be "static" functions, I can't reference the instance members of my class from inside them. As of now, it gives me compile errors...more >>