I've written code for encrpting files, but I can't seem to find examples where the password is secure from user input to wiping it from memory after decryption. Is this atually possible in c#? Sorry, but I've tried msdn to google. ...more >>

Hello All I am not sure if this is the right forum or not so, my apologies before hand if I am guilty. I have a C# application that has a property retrieving value (int) from my database. I would like to use this value as the number of images to dispaly in the page. I have two images (image...more >>

I was wondering if it is possible to do the following so my users can user the keyboard for all data entry. 1. I have a listview on a form. 2. I set the focus on this listview after key data is entered. 3. I would like a Hot Key combination like Alt-M to display a Context menu for this List...more >>

When property 'Enabled' is set to 'false', the text back ground color always turn to gray. Can I change this color? From http://developmentnow.com/g/36_2003_7_0_0_0/dotnet-languages-csharp.htm Posted via DevelopmentNow.com Groups http://www.developmentnow.com...more >>

Hi all, I have a few questions on deriving from ScrollableControl that I hope will be relatively easy to answer. I am using Visual Studio 2003, C# and ..Net 1.1. I have this custom control I am making called ResourceView. It is supposed to show a visual overview of resource usage over ti...more >>

Hi, I created a UserControl, and created its UI with the designer. Next, I wanted to create a subclass of that UserControl, with a new UI. But when I open it in the designer, I see the UI components from the parent class. When I step through the code, it looks like the InitializeComponents...more >>

I am trying to solve the following take home assignment problem. I am not sure whether to use Hashtables, events and shared members or could it be done more easily? Also, do I need to implement a Generic Collection for Lights? Any help in terms of pseudo code or implementation would be appreci...more >>

How do you debug the design time behavior of user controls? I have code = in the controls resize event and I've flagged a break point, but the = code never breaks when I play with the control on the form in the test = project at design time. Thoughts? J...more >>

I know two possible ways: 1. Use AppDomain.DomainUnload Event http://msdn.microsoft.com/library/en-us/cpref/html/frlrfSystemAppDomainClassDomainUnloadTopic.asp which is kinda like Turbo Pascal, which the desinger of C# made, did it. 2. Use a hack. Make the class non-static, even though it ...more >>

Is there any way to declare a static variable within a generic type definition and have that variable be shared across all constructed generic types? For example, how can I modify this code: private class C<T> { public static int Counter = 0; } public static void Test() { ...more >>

Hello, I have several jagged arrays which have been sorted. I'm trying to find the median of each array. Any tips appreciated. TIA. Bhads. ...more >>

I am currently reading Murach's C# 2005. I find the first two sections not worth the cost considering I am experienced C/C++/Java programmer. Is there a book that delves into the C#/.NET without talking about trivial things like operators and all that? ...more >>

Hi guys, Does anyone know how to dynamically build a data entry form of the format Label: TextBox Label2: TextBox2 I have a datatable with columns that define the types and names. I guess what I want is to turn a DataGridView sideways and only allow one row :). Any ideas? Thanks,...more >>

I needed to move the row from one table another one, so I read and create a SQL to insert it to the destination table. One of the place I use DateTime.Parse on the date time field. One thing I noticed is for international clients (especially Germany) the last part where I have AM/PM is getting s...more >>

I'm creating a user control where the size always needs to be divisible = by three. In the resize event within the custom control I'm having no problem = maintaining the height to be the same as the width, but as soon as I try = to add some code to make sure that the width is always divisible ...more >>

Hi all, I try to write a small client that can handle some TCP communication message. I was wondering how I could use the TcpClient class to manage it. At the first time, I don't want to play with the async methods. My main issue is related about receiving informations back from the ser...more >>

Hi all My TreeView has unicode and english labels. The treeview shows OK on the screen. When I am trying to get an item's label using TVM_GETITEM API message, the buffer returned by SendMessage always contains single-byte coded labels (ASCII) even though I use SendMessageW entry point. In ...more >>

Hi To split a single string we do the following # myString= "bannana, bowling balls, juice" string singleArray[]= myString.split(','); # This gives singleArray[1] = "bannana" etc. But to split a string into a multidemensional array is more complex. The Arraylist() method has been shown ...more >>

Basically, I just need an efficient way to store and retrieve keys from a list. I don't need key/value pairs. I've implemented this with the standard HashTable, but the value column is a waste since every key has the same value, "". Thanks for your advice. - Joe Geretz - ...more >>

hey, I'm using a windows form here,and I need to convert a datagridview (actually its an Inragistics UltraGridView but whatever) to a text file. I want each row to be in a single line. I found plenty of tutorials online, but they are only for ASP, and they use a stringwriter then they call ...more >>

Are there events I can trap on when the user clicks on the Form maximize or minimize header bar "buttons". ...more >>

Hi, One of my post answer was to use WCF and I would like to know, can I distribute WCF enabled application using VS2005 c# .Net Framework 2.0? Thanks. ...more >>

I compile my code, I get a few errors, I go to the 1st error in the editor and start to type in the correct code and I get no where because with each key stroke the caret goes away, then a long pause and then the carey comes back showing one character entered so it's like this:: SomeObject....more >>

i've seen previous posts somewhat related to this, so i apologize if this is redundant. I have a main form with separate threads. When showing a dialog like <dialog>.ShowDialog(), it functions as a non-modal instead of modal. any help is appreciated, thanks. ...more >>

sorry ididn't inclde enough code just trying to avoid the junk thats not releevent. the app startsl ike a normal form app in VS [STAThread] static void Main() { Application.Run(new Form1()); } a user can click on several buttons after a folder/file count is obtained so several parts of th...more >>

Yes I've searched msdn, this must be so simple. I'm new to programming in general. I created a solution with a form1 that creates a new form1 in the Main entry point. (Normal) A user selects a folder and my app counts the files and folders for other parts of the program. Since these counts are us...more >>

I have a log class that makes a synchronized TextWriter like so, in the constructor: StreamWriter sw = new StreamWriter(filename); tw = TextWriter.Synchronized(sw); In the destructor, ~MyLogClass(), I call: tw.WriteLine("some stuff"); tw.Close(); The Close() call throws an exception s...more >>

Hi, I have 2 completly independent programs and they need to talk to each other once in a while. Both are .Net VS2005 c# programs and both reside in the client machine. I have a limitation, I can not use MSMQ or registry. I want this program to run in Standard user mode when moved to Vista as...more >>

I am programmatically starting and ending a local instance of Outlook : //programmatically start local Outlook System.Diagnostics.Process proc = new System.Diagnostics.Process(); proc.StartInfo.FileName = "outlook.exe"; proc.Start(); ...more >>

So we'll have a SelectPens function and associated proc to bring back all pens to the client. Now think about all the variations that might be needed (many). For example, to show the pen feed sequence I'll need a subset of fields and ordered by FeedSequence. Option 1) I've seen some s...more >>

Developers, Is there any way to disable all checkboxes on a form? I have a form with 160 checkboxes and I want to be able to disable all of them. Is there a way I can do something like this: for (int i = 0; i < 160; i++) { string checkbox = "checkBox" + i.toString(); (Cast)che...more >>

I'm stuck with trying to reference an array of datagridviews that i created at runtime. It works fine when I reference them within the function they were created, but now I want to refer to them in another function. They are both public functions so I just was wondering what I need to do to acce...more >>

I am trying to use key value pair list, but I don't want to use sorted list because it messes up my order. I am not sure what other options I have. Can anybody point? Thanks ...more >>

Hi im looking for a Example of getting the table structures back to my app..... TIA Dave P ...more >>

Hello All, I have a question about using an ActiveX control with a Windows Servce in C#. I believe it is not possible to properly setup an ActiveX control in a windows service as the particular ActiveX control we're using (GrFinger for fingerprint reader)implements several event handlers. ...more >>

Does anyone know how to clear the window so it's easier to see the stuff you have listed with Debug.Write(xyz)? I need to know how to do this in code...I know how to manually do it with the mouse. Bob Sweeney ...more >>

Hi, exist in C# any support for MDI applications to notify the views (MDIChild) automatically like in C++ MFC? Thanks Christian...more >>

Hello, I'm a "expert of beginner" in C#. I have a dll - in C. And in this dll is this struct: typedef struct msg_s { /* please make duplicates of strings before next call to emi_read() ! */ int op_type; /* of "op_t" type: operation type; submit (>0), response (<0) */ union { struct...more >>

Hi, I have an application (written in C#.NET with the 2.0 framework and OpenGL) that runs several display lists. It's currently a little slow, so thought it would be a good idea to initialise the most important display lists first and display them. Then while the user is able to play with t...more >>

Does anyone know how to clear the window so it's easier to see the stuff you have listed with Debug.Write(xyz)? Bob Sweeney ...more >>

Hi, Environment: VS2005 standard, programming app/service for WinCE 5.0 I'm trying to use the Win32 DeviceIoControl(...) from C# with P/ Invoke. In my managed C# code the inbuffer of DeviceIoControl is defined as int[], but the data (type of buffer) I want to use is not. Actullay is an array...more >>

I am using the following to connect to a Sybase server. OleDbConnection Conn= new OleDbConnection(); string connstr = "Provider=Sybase ASE OLE DB Provider;Data Source=SERVER;User ID=USER;Password=password;database=DB"; Conn.Open(); I get the following error. What could be the problem ? ...more >>

hello! I have a question on how I can replace all occurences of one special character within a matching string? for example string: key = 'som#ething#something' OR anotherkey <= 'anot#her' AND somekey = 'some#' would have to replace the character # within any string between the two qu...more >>

Hello all, I am trying to write the code for the drag and drop feature for moving items in treeView. I have looked in several places but didnt quite managed to code it. Just wandered if anyone can direct to some good place for some code example (looked at code project site) or short explanation...more >>

i wrote a c# webservice to call matlab functions. add is the function written in matlab,and then make it dll to use in c#; //add.m function result=add(left,right) result=left + right; //end of add.m //calling add in c# [webmethod] public double add(double left,double right) { ...more >>

Hi I have a customcontrol that has a boolean state variable. The control is placed over a picturebox. Depending on the value i assign a new Region to the control. The region is simple and contructed from a graphicpath containing 1 ellipse. (size no more then 100 pixels) if (state) thi...more >>

hi all, how can I copy directory c:\test to a directory c:\backup with all files, folders and subfolders that are contained within test. please advice! thanks ...more >>

Hi, can anybody tell me if it is possible to detect whether a process = has some AppDomain(s) hosted, and how to get the list of all the hosted = AppDomains within that process?...more >>

i called function show() in a c# webservice //show.m function ans=show(x) ans=x; it works; but when i try to call add(),it breaks; //add.m function ans=add(a,b) ans=a+b; code in c# as follows: [WebMethod] public int show() { mat.matClass st=new mat.matClass(); object ...more >>

I need to develop a application which will replace Windows Task Manager function of displaying and ending applications which are running for the currently logged on user. This is for use in a school environment where if an application the student is running hangs they can kill it off but th...more >>

I have a form (sizeable border, shows in taskbar, nothing unusual), which is the main form of my application (called MainForm). During an operation progress is shown in another form, that is shown from within the main form with: pf.Show(this); When I have to show a messagebox, the messagebox i...more >>

I have a form (sizeable border, shows in taskbar, nothing unusual), which is the main form of my application (called MainForm). During an operation progress is shown in another form, that is shown from within the main form with: pf.Show(this); I have set the StartupPosition of the form pf to C...more >>