Hi, I am searching for a data structure that stores key-value pairs in it. This data structure is to hold large amounts of key-value pairs, and so needs to be efficient both in insertion and deletion. Does anybody know of ready data structures that can be freely used under the .Net framwork...more >>

How to fix the height size of Panel1 on SplitContainer? ...more >>

What I am trying to do is that have a psyodo file in memory rather physical media so that I can do open/create/save/read etc on it rather on a physical media. Is it possible? ...more >>

Hi all i have just begin csharp have a problem in saving time in database I have to comboboxex in form one containing hours from 0 to 23 and another containig minutes from 0 to 59 the problem is saving it in to the database I want to save only the time in to the database but i dont know ho...more >>

Hello, Does anyone have any idea that how can I store extra information in an image. such as text, as a part of image. I don't want to show the text in an image but I want to store this information in it. Actual I have to design an application which can embed and retrieve text messages from an ...more >>

Hi, I am developing an application and need to make it so the application data is stored in some manner. I am thinking of an XML file as the data source. I would like to setup 2 way data binding & also make it so the xml file is encrypted. I'm using .NET 2.0. Thanks! Chad ...more >>

Hi,everyone, I met a trouble,could you give me some useful hints,thank you very much! ===========error message: Unable to cast object of type 'System.Object[]' to type 'System.Data.OleDb.OleDbParameter[]'. ==========source code like follow: StringBuilder sbSQL = new StringBuilder(); ...more >>

Hello i would like to create a custom list view with draw custom graphics elements i try to override OnDrawItem, but it doesn't work could you help me please? ...more >>

Have you seen any NNTP classes that I may use or build upon to build a simple newsreader/downloader? Is there such a class in the .Net framework that I have overlooked? If not, inclusion of RFC documented protocols would certainly be a good idea for a class hierarchy in the .Net classes. Y...more >>

My application is written in C#.NET and will run on XP machines. I would like to programmatically change the desktop wallpaper. Reading and writing registry values is no problem but I'm having difficulty figuring out what the proper message is and how to send it to the system message queue s...more >>

I have an EXE and DLL in the same solution. Each one uses the same abstract class in their respective code. How can I set up the build so that I don't get the "X is defined in multiple places" warning message....more >>

Greetings, I'm trying to have an application resume after a reboot, by making an entry into the Run registry key ("SOFTWARE\Microsoft\Windows\CurrentVersion\Run") . This works great, and my application starts up after a successfull reboot. However, my application needs to read a text file...more >>

So I have an ArrayList that gets populated with objects like: myAL.Add(new CustomObject(parm1,parm2)); I'm consuming this ArrayList from an ObjectDataSource and would like to have this support sorting (because it's ultimately being consumed in a GridView). I can't simply sort the ArrayList...more >>

It's probably simple but I can't find a way how to copy number of bytes from one byte array to another? Just like Array.Copy(SourceArray, SourceIndex, DestArray, DestIndex, Length) does but in my case the arrays have different length. Of course I can copy byte by byte but I guess there shoul...more >>

hi, I am having a little problem passing in reference of my calling class (in my ..exe)into a DLL. Both programs are C# and what I am trying to do is pass a reference to my one class into a DLL function. When I try and compile the DLL I get "The type or namespace name "MyForm" could not be ...more >>

Hi, I am wondering why use the DataTableMapping in SqlDataAdapter when Updating data. Would someone give me some advice? Thanks for help. Jason ...more >>

All or Anyone: I am developing an Internet application where pictures are dragged and dropped into place. I am doing the drag and drop on the client side with javascript(unless anyone can suggest a better approach). When the picture (or actually diagram) is finished I want to store informat...more >>

Hello, I have Form1 - the main form with some controls including a button. I have Form2 - the properties form with a combobox and button. The user can select the colors of a button in the combobox in Form2 and press "OK". What code should I add to "OK" so that the user can change the color...more >>

Alright, I'm sure your tired to hearing this but...does anyone know of any GOOD tutorial's for learning c#. The more basic the better, I have NO experience with programing before this other than what a friend taught me (which is very little). I searched around for a while but every tutorial I fo...more >>

I'm trying to learn C#, and I came across the following: bool isClickInCell = hti.Column == this._columnNum && hti.Row > -1; What exactly is going on here? As a Foxpro dude, this totally confounds me ;) Thanks! Steven...more >>

Does anyone know how to get the file spec of DLL from within the code? I thought that System.Reflection.GetExecutingAssembly() would work, but it returns the name of the program that called DLL routine, not the DLL file itself. Mike Buchanan ...more >>

does anyone know of an easy way to say how long has a specific system been up and running? I just need to get back the uptime of the servers on our network for a report, they are all in a Active Directory domain... needs to be in C# or VB.NET preferably. thanks! ...more >>

hello, I have a mysql database(which I could not modify) and there is a Field type of blob which exuals to byte[] at mysql. I could not read the data from mysql to get that byte[] values and convert to string. Thanks for your help Esref DURNA esref_durna@mircosoft.com ...more >>

I am really trying to grasp the concept of OOP as it applies to C#. I am looking at trying to set up a simple Employee Class but I am having trouble conceptualizing what this class should look like. I was hoping someone might be able to simply outline what I envision my class to look lik...more >>

What's the easiest way to have two services talk to each other? ...more >>

Hi, I am doing some complex configuration handling, and I have similiar setup: <DataSchema version="1.0"> <modules name="Assets"> <tables> <tables description="" singular="" plural="" name="City" /> </tables> </modules> <modules name="Assets2"> <t...more >>

I'm working on a service for a project that is producing some bizarre behavior. In debug mode while the service is running, the memory usage of the service (watching with process explorer) goes from 18MB to 34MB to 711+MB back down to 51MB then down to 18MB every 1-2 minutes. The service maint...more >>

Running into an issue where the compiler will throw an error... "The type '<BaseClass>' is defined in an assembly that is not referenced. You must add a reference to assembly '<BaseClass>'." .... when using a derived class where the base class and the derived class are compiled into separa...more >>

I'm creating a web app using VS 2005. When I run the app I receive the error, "Failed to access IIS metabase" How do I correct this problem? Thanks for you help....more >>

This is probably a yes/no answer... I have a datasource for a combobox, and my datasource is an IList. This list may be composed of two class types, but all implement an INavItem interface consisting of an ID, and Display field. Can I specify an interface for the Display/ValueMember field...more >>

I am trying to create a custom KeyCollection that will only allow my domain objects to be added to the Collection. I was hoping I could achieve the following implementation. GenericKeyedCollection<int, Person> collection = new GenericKeyedCollection<int, Person>(); ...more >>

Hello. This is a desperated email because I'm in a very desperate situation. Suddenly, 4 days ago, i tried to sign in my 10 years old yahoo account and found it was accepting my password. I went to Forget password section and I can't remember the answer to my secret question... in 10 years I ...more >>

Hello, I have a very fustrating problems while debugging ASP.NET applications. When I am debugging and stepping thru code (with F10 or F11) Visual Studio some times suddenly just stop responding and the only way get it up and running again is to kill the aspnet_wp.exe process. When the de...more >>

I am designing a GUI and I need to split the screen into two parts (one on top of the other) - i.e. I need a "horizontal" splitter. The splitter control that comes out of the box with VC71 appears to cater for only vertical splitting (i.e. screens side by side). Anyone knows how I may split ...more >>

Get the following code to compile using .NET 2.0. You can use VS Team Studio, the command line complier, etc. The restrictions are: 1. Place no code in the APP_CODE folder. 2. Do not create a second project that is referenced by the first. The code is extremely simple: 1. Create a new w...more >>

I use a method that returns either a dataset or a collection depending on the method called. Since no database is involved at the layer I'm working, I can't use a data adapter's fill method to fill these results into my local dataset. How can I get these results into the local dataset? I ne...more >>

Hi, I'm have a datagrid, and I'm trying to have a tooltip pop up if a cell has been hovered on for 2 seconds. I was thinking of using DataGrid.Hover, but then decided to try this instead: static System.Windows.Forms.Timer timer = new System.Windows.Forms.Timer(); private void dg_MouseMove(...more >>

Hi, What would be the best way to check the version of .NET framework (2.0 Beta, or 2.0 Release) ? Thank you, Alan ...more >>

using Team Studio 2005 1. Create a new web site 2. Add a new class to the project 3. In the Page_Load handler of default.aspx.cxs, create a reference to the new class 4. compile solution Result: The type or namespace name 'TestClass' could not be found (are you missing a using directive or ...more >>

I'd like to implement QueueUserWorkItem for some parts of the app; specifically for DB related caching and file i/o. Example: When the user finishes work on a file, I'd like to process the file persistence (some data to db + file system as zip) in the background. I haven't worked with ThreadPoo...more >>

Ok, Someone tell me what I'm doing wrong. The statement below is returning 527.0 in v, instead of the expected 215. Am I missing something? double v; if (Double.TryParse("0d7", NumberStyles.HexNumber, NumberFormatInfo.InvariantInfo, out v)) { ...... } Thanks, Greg...more >>

I'm coming from a 3 year C background with some basic knowlegde on the Win32 API. I just started learning C# a day ago and I have a couple questions that I need cleared up that just have me very confused. [quesitons] 1.) Whenever you declare a class - MyClass - is the class alive in memor...more >>

Hi!! we are working on a project to receive IR(infrared). we currently busy with the receiving part. We get data true are com2: port. but we can't detect the 0 part of a rc5 signal Because readfile doesn't read a zero. it reads zero but we don't have start bit. so it doesn't se...more >>

I've nearly finished my personal auto updater and the only thing left to implement is a hash check against the downloaded file to make sure it's good before extracting it. Right now I havn't released it so I've tested that the selected update components download correctly and extract and th...more >>

We need to get the correct error message from the .NET Remoting server on the another computer. When we use .NET Remoting the client does not receive correct SQL Server error message if the client is on the another computer. For example, if the client deleted a record in SQL Server and th...more >>

Hello, I'm dynamically loading a child form saved in a DLL. I have this code working and it's pretty straightforward. What I'd like to do is pass an object type to an invoked method in the child form as soon as it's loaded. It seems I can get the invoke working just fine, but I can't...more >>

I have this console app that runs 24/7. When it first starts up it's around 14 megs. I come in today and the app is hung and is at around 1 meg. I know this is a broad question but I'm looking to brainstorm any ideas of what might of caused this. No messages in the event log. The ap...more >>

Hi, I have a little trouble trying to assign a Toolbar control to another toolbar variable control. I am getting my forms controls with this: for (int j = 0; j <= frmChild.Controls.Count - 1; j++) { // Some operations if (ctrl.GetType().ToString() == "System.Windows.F...more >>

Hi all, Can somebody explain to me why VS 2005 has been available in the US for a few weeks now, but seems to be nowhere available in Europe yet (based on amazon.co.uk / amazon.de listings) ? Is it to give the US developers a jump-start on us Olde Worlde code-serfs out here in the sticks? O...more >>

I have a DataGrid control with two columns. I want to prevent the user getting into the first (left) column by the Tab key, meaning; I need the cells of the left column to be set to TabStop = fasle. I found a small sample showing how to that (http://msdn.microsoft.com/library/default.asp?u...more >>

Hello! We have a database and several forms that access the database. When we access the database from all the different forms we only want to have one OleDbConnection that all the forms use. I assume that must be possible because creating a OleDbConnection for each form takes a lot of time. ...more >>

Hi, I am trying to put some XXL comde in a database column, and I am using a dataset to edit it... let's imagine this scenario <?xml version = "1.0"?> <root> <class> <student studentID="13429" name = "John"/> <student studentID="13430" name = "Mary"/> </class> </root> ...more >>

I'm trying to use an SoapFormatter with a generic List (List<int>) (.NET 2.0) When I use it I get an exception that states that the collections from Generic-namespace cannot be used with the SoapFormatter. Why does the SoapFormatter not support generics? ...more >>

Hi I have converted a string into a uuencode format, but i wish to change the spaces in the string into the char ' , does anyone have any ideas on how i can do this? Thanks ...more >>

I haven't played much with Reflection before, so I'm hoping I'm missing something simple with this problem I'm having. Trying to follow the online examples for resizing a DataGrid row height, and the following is the snippet: ------ MethodInfo mi = dataGrid.GetType().GetMethod( "get_DataG...more >>

Hi all, let be focus on sigle processor machine 32 bits. 1. with multi-threaded on single processor machine 32bit do i have to sync access to atomic get/set properties of type less then 32 bits ? 2. for those properties is it enough to use volatile on single processor machine ? 3 does vol...more >>