Hi, I have the following PInvoke problem: I want to call the Win32 API SystemParametersInfo() which has the following signature: BOOL SystemParametersInfo( UINT uiAction, UINT uiParam, PVOID pvParam, UINT fWinIni ); the pinvoke.net site suggests the following declaration: ...more >>

Is there a time fuction in C# similar to ctime in C that can convert to a calendar date and time from seconds from January 1, 1970. Thanks. Nick ...more >>

Hi, How can I split a stringbuilder into arrays? Let's say I have a stringbuilder with this value "test1234567". Now I want an array with size 6. The value of the array have to be on index 0 "234567" and on index 1 "test1". How can I do this? Thanks! ...more >>

Hi! Is it possible to wait for the callback method to finish? When using a WaitHandle only the call of EndInvoke is awaited. I would like to do some calculations in the callback-method. But I don't know how to inform the main thread that the calculations are done, besides defining an even...more >>

Hi All, I want to write a Search Engine (Full text) for a content repository that has content in XML | HTML format. My plan is to use SQL full text seach, how is the perfomance here, if I have 1000 book, each have 10 MB of text data? I need my search responce to send 10 replies at a time,...more >>

Hello. How can I generate some fixed length unique number (for example 6 character) based on some number like 1, 2, .. 45, 46, 47 (Generally I will use unique ID of the database record as base number)? Thank you. ...more >>

Hello, I am trying to read a binary file generated from Ethereal. I need a structure to hold my frame and one of my variables which stores source/destination address has to be of type char[6]. In my structure i cannot figure out how to declare this. Trying char[] dest_addr = new char[6] bu...more >>

I understand delegates do not need to be pinned, but its the class object itself I need pinned. Take this code: [StructLayout(LayoutKind.Sequential)] public class TestObject { [MarshalAs(UnmanagedType.FunctionPtr)] public AddDelegate Add; [MarshalAs(U...more >>

Is it possible using .NET (or any other language) to sniff/analyze data that travels between other computers in the network? If it is possible how it is done? Because I have some VoIP Phones linked to a switch that have it's own IP and how do I analyze the data that travels between each phone?...more >>

Hello, Beginner here reading through murach's c# book and come to a point where the book doesn't give a good example of what they want you to do in the exercise. I've created an array with 5 elements that all start with their default value 0. I need to replace those 0's with values i enter in...more >>

limiting access to files with asp.net is there any way i can make a file only accessible to certain users of my website? my files are to large to copy to a temp directory and they are of many types, .exe .xsl .xml etc. i want an href to each file but only allow users who have the right login-i...more >>

Hi Everyone, If I'm posting to the wrong group, please let me know. I have an application that I am writing to communicate from a Windows host to a UNIX server via SSH. What I would like to do, is send one command at a time, but without having to re-authenticate for each command. I am cu...more >>

This is a Window based application. How do I get my combox listing to display in sorted order by DataMember? I inserted a blank row to the dataset table which is the datasrouce for the comboBox with valuemember wet to -1. This is showing up at the bottom of the list. I want it to show at t...more >>

Should I buy the MSDN Professional Subscription for Visual Studio 2005 from microsft or can I buy a 7.0 subscription and transfer it? I want to get Profession Premium subscription and Microsoft wants $2499. What 7.0 subscription can I buy to get Premium Professional? Thanks ...more >>

When you send an email programatically throgh Microsoft Outlook it goes into the Outbox and stays there. I have an application that opens the email window and allows the user to type a message and then hit the Send button. After that the window closes but the message isn't sent like in Outlook Ex...more >>

i have a need to load image from URL. the image is really small (gif) and i use the following code. but the code is too slow any1 have any alternative way(S)? here is the url http://phone.avioninc.com/asterisk/wami/graphics/phoneringing.gif -----------------------here is the performance co...more >>

this is related to an earlier question i had. i'm trying to figure out visual studio 2003 and c#. i started a simple app to try to learn the basics and used many of the wizards to set up things like my database connection strings, etc. once i had the basic form set up, i went to hand edit the c...more >>

Hi all, Probably the first thing most of you learn, but I don't know the newline character for C#. Thanks, James ...more >>

I have found myself being a bad programmer. I know I should trap errors and exceptions and log them, but I'm not.... everywhere. I DO when the error happens in my Form class because that is where I initially setup my error log. I find now, after adding 30+ classes that when an error happens in...more >>

I'm writing some code in a KeyUp handler and can't find the Keys enumeration member for the semicolon ';'. I found Keys.OemSemicolon, but that doesn't get what I'm after. Anyone out there know how to trap it?...more >>

I would like to load a library at runtime to do some work for the main application that calls it. I would also like the main application to be notified when the library is done the work. Is this possible? What kind of events should I look into. A link to some sample code or a site would be helpfu...more >>

Is an assembly file a dll file or can it also be an executable file? ...more >>

A friend is developing a Access 2003 database. I am developing a simple installer package using C#Net. We are looking for best methods, suggestions and definately code examples for: 1. Setting a 'version number' type property of the Access .MDB/.MDE file within Access/VBA 2. Then how...more >>

Hello, I recently wrote an application that is used for testing units in a burn-in chamber. It uses two external library that require the use of P\Invoke in order to work with them. There is a primary thread and a secondary polling thread. Every once in a while the process will consume clos...more >>

Hello, I've been struggling to learn C#.NET for a while now. I've made some progress, but I'm easily stumped. :( What's stumping me today is this: I've got a stored procedure (SQL) that returns one row from a table, and up to 3 rows from another table. I want to read the values of the t...more >>

I made a class library which I want to load when something happens. How can I load this library and then pass in a paramter? I tried: Assembly asm = Assembly.Load("mylibrary"); Type t = asm.GetType("MyClass"); Object obj = Activator.CreateInstance(t, new object[] {myargument}); and I get...more >>

i'm getting an error when trying set my dataAdapter's selectCommand. the sqlStatement is a storedProc which takes parameters, so it's constructed as: sqlSelectCommand1.CommandText = "[uspProjectListUser]"; sqlSelectCommand1.CommandType = System.Data.CommandType.StoredProcedure; sqlSelectCo...more >>

I'd like my collections to contain specific types of objects. Most of the topics i read on this involves creating a custom collection class that extends DictionaryBase or IEnumerable. But this means for every object type i care about, i must create a custom collection class for. Isn't there a ...more >>

The string test = 'Exp'. I verified in Debug mode that test has 'Exp' in the first line and the 2nd line of code. Showing that dsVehicle.Tables["VehDetail"].Rows[prevRow]["Model"] has the proper changed text from null string to 'Exp'. However, the numOfRows shows 0 after execution. I exi...more >>

I've been chasing this problem around for a few days now and its driving me nuts. We keep getting these errors in our web application intermittently. I can't cause the problem myself to attempt to reproduce. From the reading I've done, people run into this when urlencoding and urldecoding im...more >>

Hi all, I hava a strange problem. After the system perform "DirectoryInfo.MoveTo", all the session and viewstate has reseted.. it make my application auto logout.... is it a known bug in .net framework1.1? anyone can help? Thanks in advanced. steambun ...more >>

Hi Guys, I want to build a font like so: headerFont = new Font("Times New Roman", 10, FontStyle.Underline | FontStyle.Bold); It is going to be built dynamically from the DB. How do I build the styles dynamically. In the above example it has underline and bold, it could also have italics...more >>

Hi, Somebody can exlpain me how to use the attribute [NotifyParentPropertyAttribute(true)] At the moment I use [RefreshPropertiesAttribute(RefreshProperties.Repaint)] to ensure that the parent of this property is redrawed. Thank's in advance Polo ...more >>

I'm trying to find an equivilent function to VB's DatePart function. I have a Year, Month, the Day of week (Sunday, monday etc.) and the week (week 1, week 2) and I need to find the date of that month. Can anyone help me with this? /RT ...more >>

Hi, I am learning object oriented programming. I am always running into scope issues in my C# ASP.NET applications. example: a public void methods: My intellisense does not does up for all lot of methods for instance. and I believe (not positive) that it gets even worse inside try bl...more >>

i need to create a clock object which is apparently in the clock class under System.Windows.Media.Animation. i've tried adding a reference to this assembly, but the closest thing i can find is System.Windows.Forms. where can i find/install this assembly? tks ...more >>

First attempt at importing a DLL Here is my class <code> public class TIGangProg { public TIGangProg(){} [DllImport("GANG430.dll")] public static extern int InitCom(string lpszComPort, int IBaudRate); } </code> When I attempt to make a call to InitCom I get a DLLNotFound exce...more >>

Hi all, I have a form which has a TabControl and a Button. At runtime, on the TabControl, I create a TabPage with a TextBoxes. Now, when I click the button after entering some text in the textbox, I want to show the text in a messagebox. I tried the following code but get an error. foreach...more >>

Hi guys, I'm a newbie to C#. My Visual Studio 2005 failed to compile the following code with error as 'HelloWorld.A' does not implement interface member 'System.Collections.IEnumerable.GetEnumerator()'. 'HelloWorld.A.GetEnumerator()' is either static, not public, or has the wrong return ty...more >>

this is reza testing... ...more >>

Hi, How is a static method different from a normal method (apart from the obvious -- ie. you don't need to initialise the class to call the method). thank you, coderazor ...more >>

Hello! I have a serializationEception. Impossible to deserialize the object. I have try with app.AssemblyResolve but i have not found the solution. My purpose is to launch my program directly from the memory. // Bhe bytes in the assembly. byte[] byteload = null; // Open the file stream...more >>

Hello, I have a question about the correctness of the language grammar for the C# 2.0 specification. I am working with the grammar specified in the June 2005 ECMA-334 standard. Basically, a using-namespace-directive is defined as follows: using-namespace-directive: using namespac...more >>

Is there any way to intercept system calls to windows such as TextOut and DrawText? what kinds of system calls can be intercepted, and what is the mechanism to accomplish this? ...more >>

Hello, Ok, don't laugh, but I have a panel control on a form and it has lots of other controls on it. I can't find it in the designer in VS.NET! I can go to the properties window and select it. All the controls it houses are there too. Yes, I did move all the controls on the form all ov...more >>

Hello, I am wondering if it is possible to create a networked application with C# that is seen as a windows user. For example, if Bob logged onto windows and then started the application, any access to the network made through the application would be seen as 'C# application user' and not ...more >>

Hello, I need to create a IE Extension in C#. I want to add a button to IE standard toolbar and then make IE call the DLL when button is clicked. I have started with the following code -------------------------------- code -------------------------------- [StructLayout(LayoutKind.Sequentia...more >>

Hi, I want to create a file and write into it. how can i set that the files will be created where the program i'm creating was installed in a folder named files? for example if i installed me program in d:\program i want to save my file in d:\program\files. Thanks, Gidi....more >>

I have a class "clsABC" which is created by VB.NET. I am trying use it in the C# program. Although I can add it in the project reference, I can't browse the methods and properties in the coding. Please see the following coding: using clsABC clsABC tmpClass = new clsABC(); tmpClass. <----...more >>

I i am calling a window apllcation by making that window application Control Dll. i have used list box in side that control when i tried to populated that listbox i got this error.... ///// The application attempted to perform an operation not allowed by the security policy. the operation ...more >>

Hi People, I'm implementing one of those typed collection thing that we all love so much :) anyhows.. Problem is this I want make it use generics. So I implement ICollection<T>, IList<T> and I think "hell yeah thats the stuff!" So then I think "well lets add some neat data binding stuff" So I...more >>

Hi, I am developing my very first Windows Service. I want to query AD every 5 minutes to generate a Report which I will use in a website. I use the following testcode, but the service won't start in a timely fashion. What am I doing wrong? using System; using System.IO; using System.Coll...more >>

Hi all I get the following error: 'A first chance exception of type 'System.InvalidOperationException' occurred in system.dll Additional information: The requested Performance Counter is not a custom counter, it has to be initialized as ReadOnly.' My code c#: using Microsoft.Practices...more >>

Hi, I have a class that has some fields. One of the fields is of type DateTime. From the constructor of the class, I am passing DateTime.Now; The value being stored is the following: 01/01/0001 00:00:00 Thats not the correct date and time. Then when I try Console.WriteLine(DateTime.No...more >>

Hi, I need to update my data based on the textboxes input on my windows form. But I feel the following sql requery is to long and cumbersome. Is there some more convient way to do the Update thing? Thanks for help. Jason Here are some of my codes: public void UpdateData(string strU...more >>

I added the following declaration withing a namespace but not within a class [DllImport("user32.dll", EntryPoint="SendMessage", CharSet=CharSet.Auto )] public static extern int SendCharFmtMsg( IntPtr hWnd, int Msg, int wParam, ref CHARFORMAT2 cf2 ); And UI get the following compiler er...more >>

How can I make a "ModalObject" that will react like a ModalForm ? I = mean an object that will run in it's own message loop and return a value = (a string value) when closed. =20 Example : =20 private void SomeFunction() { ModalObject modalObject =3D new ModalObje...more >>

Hey guys ! Can someone pls help me and tell me how it is possible to Select a Node = in = 2nd row? I got a treeview which is build like follows: node2.Nodes.Add("blah", "blubb"); node1.Nodes.Add(node2); treeview.Nodes.Add(node1); now I want "blubb"-node to be selected. How can I...more >>

Hello I have a main form that has a tab control. Each tab will host a form So after creating each child form, I run the following code to attach it to a tab frm.Owner = this; frm.TopLevel = false; frm.WindowState = FormWindowState.Maximized; frm.FormBorderStyle = FormBorderStyle.None; ...more >>

Is there a .NET class or function to dump the contents of a variable/array/object/whatever to the console? Console.WriteLine( dump_variable( my_var ) ); Thanks....more >>