I'm running this code to open a stream as pdf file: Response.ContentType = "application/pdf"; try { mystream = someStream....; byte[] myfile = mystream.ReadBytes((int)someStreamLenght); myfile.Length.ToString(); Response.BinaryWrite(my...more >>

I noticed that System.Windows.Forms.Form constructor treats his parameters as though they are passed by reference even if I omit the "ref" keyword. Why's (and how does he do) that? Shouldn't objects be passed by value if I don't explicitly put "ref" in parameter list? -- "Now the storm ha...more >>

Hi i am stuck up in a part of project where i have to inherit the VC++ template classes into C#.net. Please provide me the solution for this . ...more >>

Hi, I am using the Enterprise Application Blocks (Data Access Application Block 2005) and all I want to do is pass in a date as a parameter to a Stored procedure. e.g [Begin C# code] private void testMe(DateTime startDate) { // Create a database object Database db = Database...more >>

Hi, I need to do some graphics work from my ASP.NET 2.0 Website (can upgrade to 3.0 if really needed). Actually, I need the user to be able to draw some things in a rectangle. Some years ago I would have do it using ActiveX, but now I know MS has a new philosophy about this, probably driven t...more >>

In VC++ you can preassign a default value to an argument passed to a function. CString GetLastName(BOOL bUpper = TRUE, CString sName) { // if the flag is omitted the return string is upper case by default. } Can you do the same thing in C# methods? Thanks, Mark ...more >>

Hi, I'm wrapping a 3rd party .NET 2.0 CF library which mandates Dispose be called. So, I mandate Dispose be called on my library...I follow the Disposable pattern described on MSDN...and I Dispose of the wrapped 3rd party library in there. My library is meant to be used in Forms. My q...more >>

Does anyone know if an analogue to the "swap()" function found in C++ exists in C#. For those not familiar, let's say you have a function that loads some collection passed in by reference. If an error occurs while loading then the collection will be in an indeterminate state. The work-around i...more >>

Hello, is there any possibility to prevent a ListView from selecting an item starting with a certain letter when pressing the corresponding key? Thanks, Ferdinand...more >>

Hello, I have put a simple form together with a lable and a textbox. I want to be able to trap the ENTER key when is pressed. So I can check the texted enetered. If correct, call up the main program, if not re-prompt for the user ID. Thanks, Jerry ...more >>

Hi, I have included a PDF file in my project, when the user clicks a button I want that file to display, is this simple? How can I go about this? Thank you ...more >>

I am on WinXP but have downloaded .NET Framework 3.0. Isn't System.ServiceModel supposed ot be in there? It's not showing up in my list of .NET references within VS2005. Thanks, Ron ...more >>

I have a program written in C which I need to convert it to C#. This program includes about six header files and it makes calls to functions which havee been defined in other C programs . How can I convert only this program to C# without bothering about other C programs used by this program? D...more >>

hi, the following implementations work: public class NullSafeCollection: System.Collections.CollectionBase, System.ICloneable { object System.IClonable.Clone() { NullSafeCollection clone = new NullSafeCollection(); for (in...more >>

Hello, I have a MasterPage with a Label that I want to display a custom description of the page and when the user clicks to different links on my website I would like that description to change. Anyone have any examples of how to do this or a site with an example? Thanks ...more >>

Hi, How do i refresh windows destop in c#? currently with my c# app, it deletes an existing desktop icon and recreates a new one base on the new informations the user provided. All seems to work except the deleted icon just sitting there and disappeared as soon as i pressed F5 (or refresh)...more >>

Im using C#, ASP.NET v1.1. My class contains intrinsic types, ArrayList, and XmlDocument types. Some variables have the value NULL. After usng XmlSerializer and the information on: http://www.phdcc.com/xml2json.htm I'm having issue fully converitng my class object to a javascript readable st...more >>

Hi. I'm developing application for compact framework (windows mobile 2003) in C# and have one problem. From application, I'm connecting to FTP server and downloading some files. The problem is that I can connect to ftp only when internet connection is already established on device. If there...more >>

Hey guys Using Random(), how random is it, is it possible to be predicted? I have a requirement for a very good random number generator. I was doing something such as: Random randomSeed = new Random((int)_seedTimer.ElapsedTicks); _random = new Random(randomSeed.Next(...more >>

Hi, I have a project that loads a splash screen while initialization takes place. On the splash form is a label that I want to update with messages on what is happening with the initialization. Before the main form is loaded I show the splash screen and then try to update the splash label to ...more >>

Ok, it is easy enough to set a binary to be LARGEADDRESSAWARE. But how can I find out whether the binary has been set to LARGEADDRESSAWARE or not? Thanks....more >>

hi, as i'm farely new to C#, i have some problem of creating a shallow copy of a class inherited of CollectionBase. As far as i see, i just need to copy the CollectionBase.List using the CopyTo method. Here i'm stuck: public class myCollection : System.Collections.CollectionBase {...more >>

Being new to C# I wonder if the index of an array can be some other ordinal type than int? Coming from Delphi, I can determine the type of the index as well as the type of the elements, but haven't had any success with C# so far. The following example yields the compiler error: error CS0118: ...more >>

[I posted this in ...dotnet.framework.interop last week, with no luck. The question seems long, but I think that the answer should be easy and quick for someone who knows it.] Hi, I need to consume an unmanaged DLL from managed C#. The DLL is "ae766.dll". I have problems with one function in...more >>

Hey guys Using Random(), how random is it, is it possible to be predicted? I have a requirement for a very good random number generator. I was doing something such as: Random randomSeed = new Random((int)_seedTimer.ElapsedTicks); _random = new Random(randomSeed.Nex...more >>

Hi, I have the source of a HTML file which contains a list of contacts. Now I am looking for a tool/script which can read the file and gives me back all e-mail adresses. Can somebody help me with this? Thanks! Arjen ...more >>

Hi guys In regards to the foreach and for loops. I am trying to avoid this exception:exception: "Collection was modified; enumeration operation may not execute. System.InvalidOperationException" The problem is i have a timer, that checks at an interval for any changes to a list if the...more >>

Hi, I want to be able to create a custom sort order for a Sorted List. Specifically, I have a grid which goes from A1 to H12. The default sort gives me A10, A11, A1, A2 ... I would like to change it so that it first sorts by the alphabetical character and then the number. I have figured o...more >>

I need the data passed in from the textbox to be in a certain format, eg xxx-xxx or empty string. What is the regular expression syntax for that? Thanks ...more >>

I hope you can answer a question. I am writing a poker utility that tracks what windows are open and displays information about opponents that are still playing and their previous history that is stored in a game DB. It is a very cool project with Pattern Recognition (Pixel Screen SCraping to ...more >>

hi dear i am working on .net(1.1) web service and due to delay in response i made it multi threaded but when i passed a object in function which is called on a new thread, it is throwing ObjectNullReference exception... because it is unable to get value from the property of that object.... ...more >>

Hi, I've a vb dll with a function that i want to access from C#. I'm using the following: public class library { [DllImport("myDll.dll", CharSet = CharSet.Auto, EntryPoint = "clsLibrary")] public static extern void create(); } and: library.create(); but i'm getting Sytem...more >>

Hi, I'm writing a custom control that has several class type properties, f.e. ImageList, List<string>, StringFormat. None of these classes seems to provide a 'Change' event. The result of this is that I don't get notified when the user edits the subproperties at design time and am unable to ...more >>

In C#, where do you defined event handlers? In VB.NET you could do something like: Public Sub btnNext_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnNext.Click end sub Is there an equivalant in C#? All code written in notepad. No VStudio / Express to wo...more >>

I need the data passed in from the textbox to be in a certain format, eg xxx-xxx or empty string. What is the regular expression syntax for that? Thanks ...more >>

I've been researching multi-threaded WinForms apps and thread synchronization stuff for a couple days since I'm working on refactoring a multi-threaded GUI app at work and want to be sure it's rock solid/thread-safe. I've seen all the posts about using BeginInvoke to have worker threads interact...more >>

Quickie time! Is indexing using String[i] to get individual characters 'as quick' as converting the String to a Char[] and then using Char[i]? Is the conversion to Char[] worth the processing? In advance, i thank you, James Randle. ...more >>

Hi, I've got 9 RadioButton's in a TableLayoutPanel container They all need to be in the same group, but 2 of them are in FlowLayoutPanel containers within the cells of the TableLayoutPanel, hence i have 1 group of 7 RadioButton's and 2 groups of 1 RadioButton and not 1 group of 9 RadioButto...more >>

Hi, I've been working on local host to create a webform in asp.net. now I'supposed to deploy it on another server how could I do this? Thank you ...more >>

my solution contains xml and text files that the application uses to store and retrieve data. the text file were created automatically in the bin\debug folder and the xml is in the application folder with the ..cs files. when I publish the application using the publish wizard and and then instal...more >>

Hello, Just a quick question concerning signed assemblies: I have developed an application which uses a number of signed assemblies. Now I would like to distribute the source code (ie. the entire project) of the application as an example, but I do not want others to abuse the signed assemli...more >>

Hi, Supposing I had a string made up of a person's name followed by their profession in parentheses e.g. string strText = "Tiger Woods (golfer)"; and I wanted to extract the portion of the string between the parentheses i.e. "golfer" Would a regular expression be the most efficient w...more >>

Hello, from the code below, how do I add/send a parameter to the stored procedure? SqlConnection conn = null; conn = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString); conn.Open(); SqlDataAdapter daProjects = new SqlDataAdapte...more >>

Hi, can an application detect if windows starts the screensaver? So that my application can do some work while the user is afk. Greetings Sonya...more >>