Hi, I am new to C#, after recently converting from JAVA. I am looking for a util or the proper way to store app settings for configuration, such a s DB connection strings etc. In JAVA there is a Properties object that manages all the load/save functionality for us, giving access to a Map of n...more >>

I'm in the market for an obfuscator. Any recommendations and rationalle for chosing one would be greatly appreciated. Along these lines, some obfuscators reduce the size of the assembly. The claimed benefit is faster application startup times. Others brag that they do not reduce size - as the ...more >>

hi what is the use of boxing i understand that it is converting from value types to reference types.. but why would i want to do that? can anyone explain? ...more >>

How could I change the code below for the constructor to make use out int X and out int Y parameters? Could someone please show me? using System; namespace PRL001 { public class Locate { public int loc,location,x,y; private int [, ] mat= new int [6,20];...more >>

Does anything like this exist in c# to evaluate a portion of a statement prior to using it in a larger statement? http://msdn.microsoft.com/library/en-us/jscript7/html/jsmtheval.asp?frame=true...more >>

I have a server (NT service) that listens on multiple ports, some use asynchronous methods and some synchronous methods for reading and writing to and from the sockets. I could really benefit from timed server events. For example, say I wanted to disconnect a user who has idled at a login prom...more >>

C# allows to have public array properties, but is there a way to make that array property private, with a get/set method using the get/set syntax that c# introduced? If not, what is the cleanest way to accomplish that? Perhaps just create get_arrayname(index) and set_arrayname(index, value) met...more >>

I need to compare two dates which one date is 4 days earlier than other = date or I can customise the dates comparison difference. How to do it in = C#?? Million Thanks...more >>

Hello I was wondering if there is a way to populate a listview with a dataset? i cant find any DataSource on the listview control /Lasse ...more >>

Realistically, how efficient is the using() statement (not the directive)? If I do this using (SolidBrush test = new SolidBrush(Color.Black)) (... is it more efficient (performance and memory wise) than this Solidbrush test = new SolidBrush(Color.Black) test.Dispose() test = null Do...more >>

I need to verify that files users copy to a server are of a specific file type (.jpg, gif, mpeg, or wav) - and I don't want to assume that the file extension correctly represents the actual file type. How can this be done? Thanks in advance. ...more >>

I'd like to obtain the bit layout of a single-precision, floating point value. ie. I'd like to convert the 32bit float to a 32bit [unsigned] integer, not the value but the binary contents. For those familiar with C++, I'd like something similar to: unsigned int ExtractBits( float value ) { ...more >>

Can anyone suggest me some searching technique in C# such as binary = searching as I am a newcomer of C# Million Thanks......more >>

Hi~. I make an ActiveX Control with MFC library. Source code of this control is from default Visual C++ wizard. It run well in MFC container and other(VB, DELPHI, ...) and .Net winform. But!... It has some different behavior in .Net MDI child form. The function OnCreate of ActiveX C...more >>

I am trying to read a string of bytes out of a file and convert them into an int. I can make it work in Visual Fox (see below), but I can't seem to get the same code to work in c# (see below the fox sample). Does anyone recognize this or can anyone let me know what I am doing wrong? Is there a...more >>

Hello I was wondering if its possible to highlight a selected row in a datagrid as in default for a listbox? and disable that textcursor when clicking on a row? /Lasse ...more >>

I am using the following to display the month. Convert.ToDateTime(my_date).ToString("MMMM") It works by showing the correct month name in english. How do I display the date in French and German? I don't want to set the whole site globalization to be French/German, only part of it needs to ...more >>

Hello Experts, I have wrote a search method that accepts a string argument from the search keyword text box. Everything goes fine except when I enter " ` " in the text box and search, it display me back with: <INPUT id=txtFind onblur="this.style.color='Black';" style="WIDTH: 150px" onfocu...more >>

Is there a way to not show the title bar at all in a win form? I tried setting the text property to an empty string (another post mentioned that it happened to him when he set the text to an empty string), but the title bar is still there. thanks gv ...more >>

Can anyone tell me how to align a windows form to the bottom right? ...more >>

Hello I'm trying to change the icon for an exe - I thought it would be as simple as changing the App.ico. However the problem appears to be that when I open the App.ico with paint, I see one image, but when I open it up with IE, I see another (this is the image that the exe uses). I don't know why...more >>

Is there limitation of ImageList to 256 px? While trying to change the size to more then 256 I recieve the exception of "value out of range". While trying to change the size on run-time I'm recieveing error " is not a valid value for 'value'. 'value' should be between 1 and 256" How to rid ov...more >>

Hi, The code shown below is going to be a part of some tests I'm doing. I'm trying to check how many threads are created and started (threads does not do anything and exits soon after creation) i a certain amount of time, i ex. 30 seconds. I'm trying to optimize it as much as possible. I wonder...more >>

Hello Im wondering if there is some control in VS similar to listbox, im getting data from a database and i would like to present it like this: Col1 Col2 Col3 1 A B 2 C D 3 E F were each "row" is ...more >>

when a reference type is stored in say hashtable. is it converted to an object type and is it also considered boxing although the object was not a value type? 10x. ...more >>

Please, My corp. is moving through .NET (C#) is there any programming best practices documents around the web? Style, Format, setup and so.... tks in adv Fabiano ...more >>

Hi, I am currently in the process of designing a C# database application. I am wondering if there is a way I could create the front end to be run by an application server and have the client point to it. I am looking of having between 3 to 5 concurrent users. It will be using MSDE as the ba...more >>

I have a dataset that includes data adapters for two tables, Company and User, and one for the intersection table, Company_User. I've set up DataRelations between the tables within the dataset .xsd file. How do I now apply a filter that restricts the Company to only display those records acce...more >>

I converted a C-style struct into C# but when I call a dll function with it as parm, I get "can not marshal field stack of type ZM7.ZIP4_PARM: This type can not be marshaled as a structure field.". The dll function was working great at accessing and reading the struct but then I noticed that I h...more >>

Hi, I want to ask all of you if anyone knows how I can use Assembly.LoadFrom(dllFullPath) with different dlls? After it runs for two times, the third time it will give exception, saying that the assembly is already loaded. thanks in advance! ...more >>

Hi group, I have an xml file as: <AAA> <BCC> <BBB/> <data>'Test'</data> <BBB/> <BackGroundColor>'Test'</BackGroundColor> <BBB/> </BCC> <DDB> <BBB/> <BBB/> ...more >>

Hello i've selected data from a table and put it into a dataset, now how do i populate a combobox the easiest way? OleDbDataAdapter DA = new OleDbDataAdapter(); OleDbCommand SQL = new OleDbCommand("SELECT * FROM Products", conn); DataSet DS = new DataSet(); DA.SelectCommand = SQL; ...more >>

From the Object.GetHashCode doc: "The default implementation of GetHashCode does not guarantee uniqueness or consistency; therefore, it must not be used as a unique object identifier for hashing purposes." I'm blown away by this statement. Translation: the default implementation of ...more >>

Hello I get the following error: Fill: SelectCommand.Connection property has not been initialized. what's wrong? connection works but it refuses to fill the dataset. using System.Data; using System.Data.OleDb; /* CODE....... */ OleDbConnection conn = new OleDbConnection(...more >>

Hi All, I have never worked with C#, I am just going to ask a simple question, Are system.drawing classes suppored in Web(ASP.NET) applications, or say can you draw line or text in a Web application? Thanks. WJ ...more >>

dear all expert, My programme is as follows: try { conn = new SqlCeConnection ("Data Source = POS.sdf"); conn.Open(); cmd = conn.CreateCommand(); cmd.CommandText = "INSERT INTO tbl_Check (A,B) VALUES (?,?) "; cmd.Parameters.Add("A", SqlDbType.Int).Value = chec...more >>

I tried to convert this VB function to C#: VB------------------------------------------------ Function GetSelectedIndex(CID as String) as Integer Dim iLoop as Integer Dim dt as DataTable = ddlDataSet.Tables("Categories") For iLoop = 0 to dt.Rows.Count - 1 If Int32.P...more >>

Hi, I have a Web Service with a WebMethod called getRepaymentSchedule which returns an array. Internally, the array is built up using a struct, as follows: public struct RepaymentSchedule { public int nPeriod; public double dRepaymentAmt; public double dInterestAmt; } ...more >>

how would set up a regular expression that is 10 digits in length and can not start with 1948, 9903, and 5631? thx. ...more >>

I want to write an application that has no form, but uses toolbox components, i.e. notify icon, context menu, timer. I notice that I can drop these items onto a component class, but is that how I should be approaching this problem? I have ended up tying myself in knots trying to get Applic...more >>

The following code outputs the following: True True Cannot access a disposed object (ObjectDisposedException) Why does WaitAll differ in behavior from WaitOne? Mutex mutex = new Mutex(); bool bLocked = mutex.WaitOne(); Console.WriteLine( "bLocked = {0}", bLocked ); IDisposable i = mute...more >>

I was designing a software with plugin function using C#. Let's say, that I wanna upgrade this software just by downloading dlls from the network and copying them into a special directory. I may add dlls or replace the old ones. But as you know, C# programs treat objects in dll as newbies if thi...more >>

Hi All, Does anybody know how I can extend the automatically generated xml tags that are generated when I entre three slashes /// <summary> /// My Summary /// </summary> /// <param name="sender"></param> /// <param name="e"></param> I want to add a few comments when I put in...more >>

I store the value that returns the ExecuteScalar method of the SqlConnection object in a variable (object type). The problem is that if I close the connection object, I can't read the content of the variable. Why occurs this? Thank you. .. ...more >>

Hi, I've got an array with string elements in it, and i also have a combo box with items statically added at design time into the list collection. The array is going to have data such as "Business","Hospital","Government","Unknown" The Combo box has items with similar names. I want to be ...more >>

How do I use resgen to create a resource file that contains a bunch of wav files? I've seen examples for creating ones with text but not images. Regards...more >>

Has anyone successfull launched a URL into a new browser window from a usercontrol hosted by IE ? I used the Process.Start() method on my Windows Application using the usercontrol which works fine but Process.Start throws a security expcetion when the control is hosted. understandibly. rgds...more >>

I've got 44 different terminals serving four grades of product each, and it's been a bitch referencing them. I have one SQL table I'm pulling out beginning inventory for each location. I've got another stored procedure that pulls out inventory, ultimately I have to subtract by location, by produ...more >>

Hello have problems populating a listbox with data from an accessdb. cant figure it out, have clicked "test connection" and it works but not this: using System.Data; using System.Data.OleDb; /* lots of code here */ private void button1_Click(object sender, System.EventArgs ...more >>

public static void Main() { try { DirectoryInfo di = new DirectoryInfo(@"c:\"); // Get only subdirectories that contain the letter "p." DirectoryInfo[] dirs = di.GetDirectories("*p*"); Console.WriteLine("Number of direc...more >>

can any one tell me abt this attribute or give me a link which gives information abt this attribute Thanks in advance naveen ...more >>

All, Is there a tool available in the MSDN that will allow two programmers to see and work on code together from two workstations that are in different physical locations. Thanks grs ...more >>

If I want to write my own DTOR in C# what method will it be? I know DTOR's are not supported in C# but I want something like DTOR in C++ in my C# Module. How to accomplish that? TIA ...more >>

What build tools are you guys using out there? We were evaluating a couple and the differences in some are staggering. For example, NANT is the "cool" thing right now but it can be somewhat complex. A tool like VisualBuild looks offers a more WYSIWYG approach along with easy, built-in SourceSa...more >>

I have tried putting full permissions for ASPNET account. I wiped all the files in "Temporary ASP.NET Files". Don't know what else to do!!!! ---------------------------------------------------------------------------- ---- Compilation Error Description: An error occurred during the compil...more >>

I have the following code that loads an image, resizes it as a new image and then saves to a new file, the original image file then gets deleted and the new image is renamed to the old filename. Now I get the following exception on the File.Delete line System.IO.IOException: The process cann...more >>

Hi, I have written an Excel addin in C# and have found that everything works fine when I only have v1.0 of the .NET Framework installed on my machine In a normal C# exe built to work with v1.0, I would expect it by default to load v1.0 even if v1.1 is installed, unless config files or policies etc ...more >>

I have the following code in C#, DateTime myDate = new DateTime(2004,4,5,13,0,0); String myString = myDate.ToUniversalTime().ToString(); -- I just realised that I did not provide the TimeZone for the date/time. I would like to supply CET as the paramter, but I donot know where to do thi...more >>

Hi I have a class that finds the matches in a big string take in count a regular expression.. I would like to know how to replace, every time i find a match, this match by another string.. Any help will be gratefu Thanks Josema....more >>

Hi I am trying to print table format text out in C#. The approach I use is to format the string varaible a temp=string.Format("{0,-10}{1,-8}{2,-12}",id,name,cost) Then I keep adding values by useing temp=temp+"\n"+string.fromat... At the end, I put the string variable to a memorystream and send...more >>

here´s my question I´m doing a database program, and when the user type a part of the name of the consumer, i populate a listbox with all the consumers that have these part in their names. If the user click in some name in the listbox, the textboxs are populated with the data from that consumer....more >>

Does anyone known any sample to use java classes from c# ...more >>

Hi perhaps someone can help me. I've been trawling the boards to find a way of starting Excel from C#. So far it seems I need to use using System.Runtime.InteropServices; using Excel; Problem is the 'using Excel' fails to work, with the error. The type or namespace name 'Excel' could ...more >>

anyone come across this problem were the user tries to sort the a Double type column in a datagrid that has some 'NaN' ( not a number ) displayed that causes the frame work to throw a indexOutOfBounds? apart from preventing these columns from being sorted how do you get around it? Ron...more >>

Hi In my application I submit a procedure using another thread, so the user can use the computer while the process is running But, how can I send a messageBox using the main thread to the user when the procedure in the sub thread is over Thank you Fabrizio...more >>

Hi,in one project I use a named pipe in a mixed managed-unmanaged environment. The server end of the pipe is created within an unmanaged code,while the client end is opened within managed code. In order to open the client end,I had imported the Win32 API functions CreteFile(),SetNamedPipeHandleState...more >>

I have this error when I try to launch my Asp.Net page : System.NullReferenceException: Object reference not set to an instance of an object. at calformation.CalForm.Calendar1_DayRender(Object sender, DayRenderEventArgs e) Source COde : protected void Calendar1_DayRender(object sender, Da...more >>

Hi, I'm a newbie in C# and I'm trying to have a splash form before the entire app runs. Any tip what is best way to do that, will be very much appreciated !!!! ...more >>