Ok, I'm not sure this is a C# question but here goes anyhow... I used this walkthru to create a windows service: ms-help://MS.VSCC.2003/MS.MSDNQTR.2003FEB.1033/vbcon/html/vbwlkwalkthroughcreatingwindowsserviceapplication.htm It appears to install ok but when I try to start it I get this mes...more >>

I followed some simple steps in a magazine to create a Form with a split view, but it doesn't look right. First I added a ListView control and docked it to the left, then I added the Splitter control, then I added a TreeView and docked it with fill. When I run the window, it shows a big gre...more >>

Here's the Scenario I am facing: I've got a winform managed c++ client which connects to my managed COM+ server application (by making createinstance, then typecasting the object to an interface, then calling methods over it). This COM+ server application is from a C# dll that has references to ...more >>

Hi, I have an OCX I need to use in an implementation and always gets a protection level error saying: I get an error message saying: OCXReference.InterfaceClass is inaccessible due to its protection level The OCX module has basically the following structure: Namespace OCXmodule { ...more >>

Hi, I've read most of the discussions about "calculation of string width in pixels or points" - they mostly talk about MeasureString (and that it's not exact width) or more presize but requiring much more code MeasureCharacterRanges - and no one answered this guy's question (I had the same) ...more >>

Hi, Can we invoque a .lib file that is made in c++ from a c# project? Thanks Marty...more >>

I'm testing the waters of n-tier development and I ran into a scenario that I'm not sure what the best solution would be. I have a Company object which contains a collection of contacts retrieved from a database. In the presentation layer, the user will be able to add/delete/modify this co...more >>

Hi, Hope I have the right forum here - apologies if I don't. I'm trying to access a ArrayList collection via an indexer inside a class called "collExample" What I want to be able to do is to store and retrieve *any* type of object to the ArrayList. However I am getting conversion errors -...more >>

I know that string/char enum is not possible in c# (.NET2.0) I need to create the equivalent of this: public enum HOW_GOOD { AWESOME = "A", GREAT= "G", NOT_TOO_BAD = "N", TERRIBLE="T" } i wanted to use this enum as a parameter/ return type for methods Eg public HOW_GOOD HowAreYouFee...more >>

I have an application in which I need to obtain a list of valid domain users like one can obtain when adding a new login in Enterprise Manager. My application is written in C# (.NET 2.0 Beta). I looked through the help, but could not find the .NET way to do it. Can anyone give me any pointe...more >>

If you're using a standard 3-tiered architecture, i.e. Data Layer-> Business Layer->Presentation Layer, where is the recommended place to put data validations? Specifically, data validations such as "Please enter a name." It seems like the best place to put them, from the programmer's point ...more >>

Dear all, I'm trying to program a IE Toolbar similar to the Google Bar in C# using Band Objects. Everything works fine but my TextBox (which I use to search the Internet) is not responding the accelerated keys like "backspace". I do not even get the KeyDown/KeyPress event for this keys for...more >>

hi I create a System DSN which connect to the Pervasive database located on a computer in the network. How can I write the code to connect to the database by using that system DSN? Thanks a lot ...more >>

Dear all, I've got a video capture device. Device manager shows "nVidia WDM Video Capture (universal)" driver in "Sound, video and game controllers" category. Also, Windows Movie Maker, and other standard video capture tools can record video from the device. But, I've got no idea how to rea...more >>

I create a user control with width = 200 pixels and height = 200 pixels. I create a paint event handler to draw a rectangle around its edges. I define a Rectangle as follows: Rectangle r = new Rectangle(0,0,200,200); I then draw it in my event handler as follows: dc = e.Graphics; dc.D...more >>

Hi, I am learning C# and basically using a .asp net app I wrote in VB and converting to C#. in VB code : If Context.User.Identity.IsAuthenticated Then obj = Session.Item(SESSION_NAVIGATION_DATA) Else obj = Page.Cache.Get(CACHE_NAVIGATION_DATA) ...more >>

I'm trying to insert a new Row within an existing Table within an existing DataSet using the following: DataRow NewTaskRow = dsTaskActivities.Tables["Tasks"].NewRow(); dsTaskActivities.Tables["Tasks"].Rows.Add(NewTaskRow); I'm using the code from the help text to remove the constraints with...more >>

My goal is to open Form2 from Form1 and have Form2 pass back an integer to Form 1. In VB, this is rather simple: Form 1 (vanilla form with a button): Dim WithEvents x As Form2 Dim i As Integer Sub form2Event(ByVal num As Integer) Handles x.RouteNumber i = num En...more >>

Hi I am looking at some code which in many places performs string comparison using == instead of Equals. Am I right in assuming that this will in fact work "as expected" when it is strings involved? By "as expected" I mean that as long as the strings are instantiated using string literal...more >>

Basically, how can I execute a command line executable from within C#. I'm looking for something similar to C++'s exec command. Say for example I wanted to execute foo.exe with some command line paramaters and capture it's output. Any hints? Thanks, Nathan...more >>

Suppose I have a windows service, with a FileWatcher class. A file appears, and an event is raised -- but then the server is rebooted or crashes. When the server is rebooted, I want that event state to be where it was. So, can an event be serialized? And can it then be 're-raised' on...more >>

Hi, using a setup-project : I add an exe that uses a component so I add the component to the setup-project as well but how can I specify that the component must be installed in GAC when the client runs the setup for the application ? (so far is it only installed in the directory of the client...more >>

I have a C# service (running as Network Service account) that needs to access a fileshare: \\machinename\some\path This file share requires me to login with certain credentials. How can I specify these from the context of my application? Thanks! -- Adam Clauss ...more >>

Sorry, I attempted to tab in the previous post and accidentally posted prematurely. I am trying to use the WebBrowser control from Visual Studio 2005 to load a web page and display its HTML content in a text box on a Form of a Windows Application. I have a button on the Form that invokes t...more >>

How do you make a ComboBox force casing to uppercase? With a TextBox, I do this: TextBox txtName; this.txtName.CharacterCasing = CharacterCasing.Upper; And it makes whatever the user types appear in upper case, which is what I want. But with a ComboBox, if I do this: ...more >>

Hi, I kind of got thrown into C# without any real programming experience, so I know this is probably an easy question, but it's driving me crazy. In my Tabs class, as I'm leaving a tabpage, I'm trying to capture the screen as a bitmap. I'm trying to tell it to call the CaptureTab method fro...more >>

Here's the Scenario I am facing: I've got a winform managed c++ client which connects to my managed COM+ server application (by making createinstance, then typecasting the object to an interface, then calling methods over it). This COM+ server application is from a C# dll that has references to ...more >>

I've created a strongly typed DataSet (Customers.xsd) using the xsd.exe tool. I want to be able to access fields using ds.Customer[0].CompanyName. The problem is when I return this DataSet from a Web Service it adds another Table to the DataSet that contains the data. I have to access the dat...more >>

Hi, I need to call an external C-function that accept an array of void pointers (void **). Each item can either be a single float,int,char or a C-array of these types. Is that possible and if so how to do it most elegantly? I found a lot of samples and stuff in MSDN that got me some ideas but...more >>

I want my c# webforms to be all that is in the ie window and not show the toolbars and menus. Is that possible? Thanks, Trint ...more >>

Hi All, I hvae worker class to manage the application inside worker : worker creates (n) number of threads to do IO operations. The Problem Is: to handle all threads : [create new] , [process finished] , [clean all] I have to keep worker process inside while statement: while (true) ... ...more >>

Hi, With the data grid I have set the allow sort to true. I aslo know with hittest which column was last sorted. Even thought I sort the dataview with that field but. But then How can I get the currently selected row. there is one column in datagird "id". I want to get that Id to sho...more >>

Hi, I have a tree view, when I check/uncheck the node checkbox the TreeView_AfterCheck event (function) occure and I go inside this function. In this function I trying to fegure which node has been checked , using the (System.Windows.Forms.TreeView)sender).SelectedNode don't return the...more >>

I want to create a scrollable window using GDI+ where the origin is located in the bottom-left corner rather than the default top-left corner. Currently I have found several examples on how to scroll the window and even how to set the drawing origin at the bottom-left corner. What I have not ...more >>

if I have a property something like : [DefaultValue(0)] public int Width { get {return m_width} set {m_width = value} } As a calling program/routine how can I set m_width back to it's default value 0 without knowing that it is 0 i.e. something like this.Width = Widt...more >>

Hi, I want to save the form position when the user close it. I tried to place the coordinate saving code in my destructor, but it is not triggered when I assign the form to null. Where should I place my code to save the coord. when the form close? Thanks Marty...more >>

Hi all, I have a datagrid which is populated by a dataset, I have some code to update the database etc... If I enter a value into the datagrid and hit the save button it saves the old value not the one just entered, I have to make sure I take the focus from the cell and wait a few seconds b...more >>

I'm adding a field with no value into table. In table I'm allowing null value. Then, I'm doing an update and I put a value into that field, but I get an error: System.Data Concurency Violation : the Update Command affected 0 records. Why? Then, when I close a program and call it again...more >>

DataRow[] UGrows = db.dataSetUsers.UsersGroups.Select("UserID ='" + UserID.ToString() + "'" ); foreach ( DataSetUsers.UsersGroupsRow row in UGrows ) { DataSetUsers.GroupsRow group = db.dataSetUsers.Groups.FindByGroupID( row.GroupID ); if ( group != null ) { *** sF...more >>

RicercatoreSbadatoI have some big problems with the StreamWriter and MediaDet. I have read that StreamWriter isn't threadsafe from the MSDN.. I have used a lock() but nothing......more >>

Hi, private void SetFocus(Control ctrl) // SetFocus to a particular control { string focusScript = "<script language='javascript' id='FocusScript'> " + "document.getElementById('" + ctrl.ClientID + "').focus();</script>"; Page.RegisterStartupScript("FocusScript", focusS...more >>

I have some big problems with the StreamWriter and MediaDet. I have read that StreamWriter isn't threadsafe from the MSDN.. I have used a lock() but nothing... -- RicercatoreSbadato...more >>

The file I would like to access in located in C drive and the application which reads the file is located in E drive. When it trys to read the file, it generates an error Error: Request for the permission of type System.Security.Permissions.FileIOPermission, mscorlib, Version=1.0.5000.0, Cu ...more >>

Hi, I'm having trouble trying to define the difference between declaring a field in a class const or static. i've noted that when referencing them from the class that a const is symbolized with a field symbol & a static has a blue box. What is the difference? What is the blue box? Has it go...more >>

Why would you not want to use checked on any type of mathematical operation? Or use unchecked for that matter? Thanks, Brett ...more >>

Hello, I'm having problems to open a project that I made in VS 2005 in my laptop. I have an older version installed in my laptop (VS 2000 or 2002, I'm not sure right now). Is there a way so I could open and run it in an older version of VS ..NET? Cheers! Claudi *** Sent via D...more >>

Hi, Hope that you can help me please. I'm trying to implement a simple collection property using ArrayList as an indexer. i want this to be pretty generic However I'm having difficulty with the conversions. I know that System.Collection.ArrayList accepts and returns most of it's members a...more >>

Hi, Can somebody please tell me how to keep application running even though user logs out ? scenario is, user logs in, starts an exe and logs out, exe need to run for couple of hours. One solution is to use service instead of exe. Any other ideas ...? and also user logs-in using Remote Deskt...more >>

before I start filling up the first page of perhaps many pages of code with if/then or switch:case buckets, I wanted to step back and see if there is a better way... I will have a table with up to 300 rules in it. Maybe more... In each Score table there is a column which will refer to a domai...more >>

I have Visual C# .net at home and am starting to develop a project in order to learn this .net stuff. I just came to realize that Crystal Reports does not come with the standard edition of Visual C# .net. So... I can't seem to find out, even in my Murach manual how to setup and print reports....more >>