Hi All, In order to implement a timer calculation ( to calculate how long does the user has used this program since first time ) { long CurrTime = DateTime.Now.Ticks; textBox1.Text = CurrTime.ToString(); if ((CurrTime - FirstStartTime) > 10 * 10000000)...more >>

I wrote a windows application in C# (using visual studio 2003) which I am running as an executable on a Windows Server 2003 machine. The application runs smoothly for days. Then out of nowhere, the GUI diappears and there is no way that I can get back to the GUI. If I look at the Task Manage...more >>

Hi, I am using C# as the code-behing language in ASP.NET and trying to put in ActiveX control in the web page. Could you provide me a suggestion on this as good start up ? Trying to get familiar with ActiveX controls. ...more >>

We have created a program in C#. This is server program. We have also created a client program written in DELPHI which is sending continous request to server program. We have used tcpListener.AcceptTcpClient() method to return TcpClient object to connect with CLIENT APPLICATION. After...more >>

I am working with Winforms and writing some general purpose helpers for use with a 3rd party grid (devexpress). I have been using BindingList<T> to bind to the grid. At some point I need to get the object stored at the Nth index of the list. The intent is something like the following... ...more >>

Hello! Help with Regex, Thanks in avance! 1=2E Validation of Name Enable ALL keys on keyboard EXCEPT 0, 1, 2........., 9 Change to uppercase of 1st alphabet of every word and lowercase for the rest of the word. Example: aDa AdA 12DDD 12ddd dd12dd =A8=A4 Ada Ada 12Ddd 12Ddd Dd12dd ...more >>

what happens with the code from the catch block ? is it interrupted by the ThreadAbortException ? void ThreadProc( ) { try { } catch(Exception ex) { // thread.Abort() from another thread on this thread is called at this moment } } ...more >>

Hi, For my own peace of mind, I am trying to finish off a website which uses ASP. Net and C# and I am trying to get the C# programs to compile with Visual Studio 2005. I think the errors are related to the conversion from an older version of ASP.Net. I am new to everything and I am getting t...more >>

I am not having success embedding carriage return and line feed characters into a string and displaying them with an ASP.NET label. Is anyone getting either of the following to work ? StringBuilder message = new StringBuilder(); message.Append("Line 1"); message.Append("\r\n"); message.Ap...more >>

I'm writing a Windows service using C# (VS.NET 2005, .NET framework 2.0) that downloads a binary file from the web once every 15 minutes.The first time it downloads the file it works great. However for some reason it is not closing/releasing the file completely. So in subsequent attempts my co...more >>

Hi. I have a trackbar. I need to set trackbar value depending on where user has clicked on the bar ( mouse_up event for example ). However avent arguments are telling me only about x and y position and so on... If i had hittest method i could try to work it out... Maybe you will know how to do ...more >>

I have a webcontrol that extends from System.Web.UI.WebControls. WebControl. It has 3 drop downlists for day, month, year. The day, month, year then form the property called SelectedDate. The control also has properties for MinimumDate , MaximumDate. During design time while seting property I ha...more >>

hi, i'm using serial port functionality provided by .net framework 2.0 using system.io.ports. Is there anyway that i can set DTR/DSR handshaking? Regards, Bandu ...more >>

Hi- I'm trying to transfer files directly to a PDA via a Csharp program I'm writing. Does anyone know how to do this (I obviously can't use active sync). Ohh yes, I'm running Vista. -Thanks -Dan ...more >>

Hi, I use string sValue = ConfigurationManager.AppSettings["MyKey"] for reading a value in my app.config, section AppSettings. Ho to write in it for example to create a key and assign a value like this ? ConfigurationManager.AppSettings["ANewKey"]="my value in app.config"; Thanks for help....more >>

Hi NG! Is there a way to open the Outlook address book dialog (as in Outlook) using C#? I am using Outlook 2003 (MS Outlook 11.0 Object Library). In Outlook 2007 it can be done with SenderNameDialog. I need to support both versions. Any hints? TIA Alex ...more >>

I have filled generic list with data on one form. When I close form generic list stay in memory waiting GC to collect. I want to implement code on form close to dispose generic list. ...more >>

Just wondering the extent to which some of you are implementing classes as Singletons. I'm working on a brand new project and, early on, identified some obvious candidates. By "obvoius candidates" I mean classes for which terrible problems would clearly arise if more than one instance were to ...more >>

Hi all, I need to write app for telnet client. I saw that there's the Socket class. the point is that I need to implement the protocol. Is there other way\class that I can do it with no need to implement the protocol? thanks, ...more >>

I am begining to code C#... and I am trying to make a ball moving at the screen.(Actually I was trying to make a pong but first I want to make a ball moving at screen) I did it and it worked well, but the ball is blinking while moving. I tried to put the following lines of code inside my Form'...more >>

I have a datagridview that was created by dragging an SQL stored procedure onto the form. The SQL query has fields for Monday, Tuesday, etc. I am trying to set some of the values with the DefaultValuesNeeded event. When I right click on the control and select Edit Columns I can see a column ...more >>

Hello Everyone, I have a huge string and I want to get just part of the string and pass it in my stored proc. I am trying to do it through a structure. I am not sure if this is the best way and right way to do it. Below is the sample code String x = "This is a test. Test done by xyz"...more >>

I have a method GetResult that receives 2 string arguments and I want this method to return an array of string. Is it possible? string[ ] GetResult (string s1, string s2); I tried to define like this, but when I called the method it shows me an error cannot convert string [ ] into string ...more >>

Hi All I would like to call the following: OCIAttrGet(ParamHandle, OCI_DTYPE_PARAM, HasDefault, Nil, OCI_ATTR_HAS_DEFAULT, ErrorHandle); from C#. Does anyone have any examples of how you go about calling OCI? I am trying to find out if a stored procedure has a...more >>

Hi folks, You know, the Thread class has got a method named Abort which according to the msdn: "Raises a ThreadAbortException in the thread on which it is invoked, to begin the process of terminating the thread. Calling this method usually terminates the thread." I've had a long discussion...more >>

Is there any possibility to detect if an object is reachable and can be collected by the GarbageCollector? I'm using a cache of weak references to persistent objects. Objects are then accessed using an ObjectID. If the object is still alive, the object is retrieved from the cache, if not, it w...more >>

Hi, I try to use a 3rd party assembly ( basically a layer of managed C++ around a native C++ lib). Unfortunately, it was developped for NET 1.1 and knows only the default AppDomain. When I try to call it from another AppDomain, I get the "Cannot pass a GCHandle across AppDomains" error. ...more >>

Hi, I am populating a dataset from a stored procedure, which returns multiple resultsets. One of the resultset is formed with a join condition from two tables. I am updating the fields of the respective datatable. Then update the first table in the database using DataAdapter.Update(). Thi...more >>

In my windows form I have a comboBox and a textBox. When I try to write something in the textBox it shows me the error message below: Attempting managed execution inside OS Loader lock. Do not attempt to run managed code inside a DllMain or image initialization function since doing so c...more >>

Hello, I have a question on socket programming in C#. I have this code and it doesn't work correctly. It sends the message correctly but it does not get the message that the server sends back ( the program bellow gets blocked ). I know for sure that the server sends back a message ( I'm usin...more >>

Hello, I have a question related to socket programming. I have this code: TcpClient client = new TcpClient(hostName, port); try { Stream s = client.GetStream(); StreamReader sr = new StreamReader(s); Stre...more >>

I have an application I am developing that has a Combo Box that is intended to show a list of available tables in the selected DSN. I have put code in the control's DropDown event handler to clear the item list and reload it from the currently specified DSN (in a Text Box control on the same for...more >>

After migrating from XP to Vista, the following piece of code Process.Start("subst", drive + " " + path); as well as DefineDosDevice(0, drive, path); // importing kernel32.dll simply stopped mapping drives. The funny thing is that running "subst [drive] [path]" from command line performs thi...more >>

hello, i've a 4 character string stored in a 4byte value (lets say an 32 bit integer). the integer holds the value: char[3]*255^3+char[2]*255^2+char[1]*255^1+char[0]*255^0. how can i convert this integer back to string? thx ren=E9 ...more >>

Hey All, Is it possible to draw an image upside down? I am using Microsofts example of "Printing a local report without preview". The only trick is that I want to flip the image upside down. Reason: I need to guarantee that I print a barcode in the exact same location (lower right side...more >>

IMessageFilter interface allows one to capture messages before they are sent to a control or a form. Is there a way, perhaps by implementing another interface, to capture all messages to an exe. In other words, if I add a custom message filter implementing the IMessageFilter interface to my...more >>

Hi I seem to have a bit of trouble understanding one bit of how generics work: In C#, every class automatically derives from object, and inherits a bunch of properties (i.e. ToString()). Thus, (MyClass is object) should always evaluate as true. However, if I have a method with the foll...more >>

Hi, I am writing a game that I want to net enable. So I want to be able to connect to peers over the internet. I will be sending very small packets of data. What is the best way to do this? Do I need a middle man server? Can someone outline how to do it please? rotsey ...more >>

..net 2.0 I'm having trouble implementing printing of a DataGridView. Below is the PrintPage event. The problem is that it doesn't matter how many pages the DataGridView content spans, the code below will print the first page only. I want all pages to be printed. What am I missing here? ...more >>

How can I catch an "invalid page fault". Could you please give example code? Many thanks. Adrian. ...more >>

Hello, I have to ralize a graph with a pair of straight vertical lines that have to be dragged in the left-right direction with the mouse. I've never done something similar so I wonder if someone could tell me the key C# classes to use. Thank you very much. ...more >>

Hi, all: I want to choose a test tool for development. It seems that NUnit is the most popular tool, but I found that Microsoft Visual Studio also provide a built-in tool, so which is the better one? Does it mean that built-in tools will have better integrated supports in future? ...more >>