I am unable to get the connection to work with using the app.config file. the connection works when I use 'in line' connection as below: ------------------------------------------------------------------ I have a declaration in the class private OleDbConnection con; Then code in a procedure ...more >>

I want to get the address of a c# object,and store that address in a IntPtr value, like we use handle in VC6.How can i achieve it?...more >>

If I setup a simple remote example with a Server object that creates a RemoteObject which is then accessed by a Client object, is there any way I could give the RemoteObject access to the Client object? I basically need the Client to access the RemoteObject's methods and vice versa. Many ...more >>

Hi, i have a very irriting problem that i have written a short piece of code to demonstrate. The problem is that my aspx page is not fully refreshed after an event, which is delegated to an ImageButton during runtime, is fired. Any suggestions would be great. This code is the c# behind a webfor...more >>

I'm trying to parse a directory, but am not sure of the best way of doing it. Preferably using only .net instructions. Can anyone give me an idea of how to do this? Thanks in advance for any help that anyone can give me... John ...more >>

I'm puzzled by this, code clarified from working code IToolboxService GetToolboxService(IDesignerHost AnyDesigner) { return (IToolboxService) AnyDesigner.RootComponent.Site. GetService( typeof(IToolboxService) ); } Now, RootComponent is an IComponent, and Site is...more >>

Hello, I hope these questions aren't too terribly dumb. I'm using a AxWebBrowser control in a C# app to display html to the user. I create the html on the fly. Is it possible to pass AxWebBrowser a string of html to display instead of a filename? One other question. I will have links...more >>

I add the MSComm control in my C# program, but I can't get byte [] data, only to get string data; there are some problem when char >126 or <32 How to access NO ASCII char (for examples: like UNICODE Chinese, Japanese...) like a [0..255] char ? ...more >>

Hello, I was wondering if anyone knows about a free tool which can build graphical diagrams of C-sharp classes from CS code... When I programmed in C++, I used doxygen to create my code documentation together with graphical representations of classes with their relations using graphviz. Now I use...more >>

Hi All, I have just downloaded the Boralnd C#Builder, .NetSDK, .NetRedistributable etc etc. I know want to learn C#, can anyone point me to a good resource on the web and perhaps recommend some books. On the book front, I have been using Wrox books for Classic ASP 3.0 development and fou...more >>

Hi to all, i have a form with 2 System.Windows.Forms.Timer objects. One fire every 5 seconds and the other every 10 seconds, the both take actions in two hashtables declared in same form. When timers fire, main form is somewhat blocking until timers finish their job, (socket operations). (I...more >>

I need to draw a dot where ever the user clicks (which will be on either the form or a couple dynamically placed picture boxes). I thought the following code should work: //--- [DllImport("user32.dll", EntryPoint = "WindowFromPoint")] static public extern IntPtr WindowFromPoint(System.Drawi...more >>

I have a web application which has a WebUI.PlaceHolder on it. I have a single custom Output rendering control that has a bunch of WebUI.Table controls (the number is determined at run time) that I add using Controls.Add during CreateChildControls of the renderer. Everything works fine with tha...more >>

I am trying to parse a string of RTF pulled from the RTF property of a textbox, going through it character by character <example> string s = textBox1.Rtf; for (int iii = 0; iii < s.Length; iii++) { char c = s[iii]; DoSomething(c); } however, the RTF code contains a ton of backslash c...more >>

Hi, Can somebody explain the following, from the MSDN documentation for the "System.Convert.ToInt32(double)" function <quote> Return Value value rounded to the nearest 32-bit signed integer. If value is halfway between two whole numbers, the even number is returned; that is, 4.5 is conv...more >>

Hi, i want to persist a few properties of a form ...how do i do it ? any leads is greatly appriciated regards, .... ...more >>

I got object reference not set, is the connection string wrong? Indeed, I know int values should be pass to Open() and Execute() method, but don't know the parameter variable given by .net. Any help? // dsn: system dsn // database: is the database instance used string connectionString = "d...more >>

In my application I need a way to distiguish between the following events: 1. When a user closes an MDI child window. 2. When the user closes the MDI parent window which subsequently closes the MDI child window. My application does certain logic when the user actually closes the MDI ...more >>

I'm trying to get a DateTime object out of different strings containing unknown datetimeformat. An example would be "Mon, 24 Nov 2003 15:23:13 +0100" DateTime.Parse() does not work and I'm not sure how to use the IFormatProvider or DateTimeStyles Any ideas? (NB! currentculture is not Eng...more >>

Hi all, I've been searching the way to achieve the following task. But no luck so far. I have a web site(main site), which requires authentication. This authentication is set at Windows directory level, so user will see the pop up gray box in order to log in rather than custom web page. T...more >>

I have done the first walkthrough of creating a basic web forms page where you use a webcontrol button to display text inside a htmlcontrol. When I build and browse the form, the button isn't displayed. The next tutorial uses a web control data grid and that doesn't display. Any suggestion...more >>

I don't know whether this is the appropriate place to give product feedback, but here goes: I would love to see some kind of diagnostic to let me know when implicit boxing has occurred. We have had a few instances where one developer or another was working on code, and did not realize that ...more >>

Hi all, How would you go about creating a .lnk file programmatically? I can't seem to find an appropriate class. TIA, John ...more >>

Hi I am writing text to a fileusing the streamwriter writeline method. When creating the streamwriter it can be opened to append text to a file. Is there a way, not necessarily with streamwriter, that I can open a file and prepend text, so that the newly added data appears at the head of the ...more >>

Everyone: I want to use a DLL(FileName:PubFunction.Dll) built with VS.Net(C#) in a unmanaged Program .But there was a Dll just has the same filename,it was built with VC++(6.0).The unmanaged was loaded by LoadLibrary function firstly,and it would be free until the Program's end.How can I Loa...more >>

Hi I would like to export a dataset to xml, but not simply writing the XML equivalent of the dataset. so perhaps call it the true excel file. by writing the XML equivalent, excel is able to read the file, but not like proper excel files Thanks Jason ...more >>

I have tried the following, which draws the border but clears the Text when the control does not have focus. Please help. ---------------------------------------------------------- 1. Set the ControlStyle to "UserPaint" in the constructor: public MyTextBox() { // This call is required by t...more >>

In a winform application, I use worker threads to perform asynchronous tasks (e.g., mail merge with Word). The thread procs need to gather some user options from controls in the UI, and I know that must be done using a delegate that's running on the main UI thread. (Can't safely access a windo...more >>

I have a problem with one of the classes in my project; when I step through the code the IDE appears to be stepping through lines that do not "exist" such as blank lines and random lines within comment blocks! I fixed the problem by pasting the code into Notepad, deleting the class and recreat...more >>

I am making interop calls to an object in a .NET component from a C++ program and am leaking memory... the following is some sample code: //////////////////////////////////////// // .NET component (Test) //////////////////////////////////////// // interface [InterfaceType(ComInterfaceType....more >>

how to customize the serialization of a collection that inherited form CollectionBase i.e making the class implementing ISerializable interface because when deserializing using the desrializing constructor(the one that has the parametr list as GetObjectData method) i can't using assiment to Li...more >>

in the following code: object obj = this.ViewState["currentCreditLimit"]; string s = obj.GetType().ToString(); currentCreditLimit = (double) this.ViewState["currentCreditLimit"]; ViewState is a StateBag object (dictionary type object) the String s shows me that the type is System.Int32, the...more >>

using mshtml, when i move the document to another i get an annoying prompt informing me the document has changed (if it has) how can i get rid of it? ...more >>

How do you use a stored procedure as the datasource for a report in Crystal Reports .NET for C#? ...more >>

I have an interesting regular expression challenge for someone more experienced with them than I for a data layer class... I need an expression to search a SQL statement (any type, SELECT INSERT UPDATE OR DELETE) and find all single apostrophes which should be replaced with a double apostrophe...more >>

Hi all, Does anyone know how to send an email from a Windows form? On an ASP.NET form you can use the System.Web.Mail namespace and create a MailMessage object. I get an error message when I try a "Using System.Web.Mail;" in a Windows form. There must be an easy way to do this. Any...more >>

I just submitted a request for help with a regex and it appeared and then vanished with a "Message no longer avialable'... I don't suppose anyone else can see it? ...more >>

I have an interesting regular expression challenge for someone more experienced with them than I for a data layer class... I need an expression to search a SQL statement (any type, SELECT INSERT UPDATE OR DELETE) and find all single apostrophes which should be replaced with a double apostrophe...more >>

Hi to all, i have a treeview that i put some nodes in it with their repsective images. If i try to change the image and set it to some other ImageList index, nothing happens. The code i use is: private void ChangeServantStatus(string servant, ServantStatus status) { foreach (TreeNod...more >>

Is there a way to do this without looping through all the nodes using read() I need to return the contents of the reader as a string Thanks S ...more >>

Hi , Does any one know how to create a window similar to the Build window in ..VS.NET using C#. We have used a text box, but, this does no seem to be scrolling down as in the Build window in VS.NET. Thanks Amendra. ...more >>

I tried searching the newsgroups to see how do you draw a dotted line but I was unable to find an answer, drawing a straight line is very easy but not a dotted one. So the question is, how do I draw a dotted line? Thank you. ...more >>

I am trying to convert some vb code calling COM oboject methods to C#. Example shown as follows Dim Stream As New ADODB.Stream Call Stream.Open() Stream.Open has three optional parameters. I am trying to convert it to C# as shown as follows ADODB.Stream Stream = null; ...more >>

I have to write a program to pass data through a web service, Ill use two strongly typed dataset enbedded in a library class, a "request" and an "answer" dataset. I've wrote the program and the web service and placed in the references the library class, but when I tried to use the web method, I ...more >>

Hi, I have a context menu, which is used for each of 6 labels on my form. That is, right-clicking any of the labels will bring up the same context menu. Once the user clicks the menu, the clicked MenuItem fires an event: menuItem1_Click(object sender, System.EventArgs e) How can tell whic...more >>

I am useing "Visual Studion .NET 2003" and writeing my progrram in C#. the problem is with Lithuanian characters. case 1. as i type in design time the special characters are ok - designer and pocket pc device displays them well. some caracters are changed into diferent after i reopen the so...more >>

hi In C#, I am using CrystalRportViewer to show reports made using Crystal Report. Now, I need to export my reports to txt format while CrystalReportViewer allows only doc, pdf, rtf and some other formats only but not txt format. Can anybody tell me how to export to txt format from CrystalRep...more >>

I have an MDI parent form called "MDIParentView" that inherits from the UIP Application Block's WinFormView. The method to start a task using this MDI form is defined as follows: public static void StartTask(Form parentForm, string navigatonGraphName) My code for this is: UIPManag...more >>

I'm looking for a version date property to go allong with the version build information in the Version class of the Reflection namespace. Does anyone know where I might find this property? Thanks -- Dave Veeneman Chicago ...more >>

Hi, I created a byte array --byte[] aByteArray = new byte[64]; and set aByteArray[0] and aByteArray[16] to '1'. Because I want to create a ulong (UInt64) with these values I do: UInt64 bb; bb = BitConverter.ToUInt64(aByteArray,0); Console.WriteLine(bb); I get a 1. So I am only getting ...more >>

How can I set the type of the object added to ArrayList (type of Array List Members) Here is the code: protected ArrayList tabs = new ArrayList(); public ArrayList Tabs { get { return tabs; } set { tabs.Add(value); //The default type is object - how to change it to ...more >>

I was wondering if someone could post some links to some bug pattern detector software for C#. I found this very interesting article about pattern detectors for Java so wanted to investiage one for C#. http://www.javaworld.com/javaworld/jw-11-2003/jw-1121-quality.html? I did a google search ...more >>

I am wondering what other developers think about combining business objects and data access layers components? Here is my design: UI-UIprocess/controller-BO/DACL-DAhelper-DB ...more >>

Hi all, the GetInterfaces() method of the Type class, brings all the interfaces implemented by a Class. The problem is that the method brings also all the interfaces implemented by it base type. Is there any flag to block the inherited interfaces ? thanks again. ...more >>

Ok Guys, I have a dataset and I need to make a treeview out of it. I want checkboxs and icons to show on the tree. What is the easiest way to get this dataset setup for a parent- Child treeview? Thanks, JJ...more >>

In the past public void has worked. But I need to return an XMLDocument, and this class needs a string param for the SP to call. public void makeXML (string lcStatement) wont allow me to return a doc. I guess too many beers last night? XmlDoc = new XmlDataDocument(); XmlDoc.LoadXml(XmlRd...more >>

Okay i have a small app. and i have added the tooltips to two forms one is showen as a showdialog, and the other is just show, but when i start the show form the tooltips on the controls is not working, what is wrong wit my settings !!! I have set the tooltip.showalways = true, but i still ...more >>

Is it possible to modify the menu bar inherited from an inherited form using designer? I keep getting a message stating it can't be modified because it is inherited whenever I try to add menu items. I tried changing the modifer in the parent form to "protected", but that didn't do the trick. ...more >>

Is there any way to send email from a console application? We have a simple console app that runs data updates and we need to be notified when errors occur. Email is the preferred method, though we can write to a file. *** Sent via Developersdex http://www.developersdex.com *** Don't just...more >>

Has anyone been able to use a C# Component in a VB form? I've created a .net class (dll) and am able to implement that from a VB script using the interop. The control does work stand alone. Any help on this is greatly appreciated. ...more >>

Hello, are there somewhere sources for the framework class libraries? Or does MS provide only IL binaries? Ondra. ...more >>

AppDomainSetup has "PrivateBinPath" property. How do I apply something like this for the current AppDomain, so that I can load the dependencies of an assembly I am loading which are in the same directory as the assembly that I'm loading? Jon ...more >>

I'm trying to access my application files for a plug-in I'm building for a third party application. I have an assembly with several dependency assemblies. The dependency assemblies are in the same directory as the assembly. d:\dev\cs\MyApp\bin\Release\MyApp.dll d:\dev\cs\MyApp\bin\R...more >>

Does anyone know how to clear arrays? My C# books talk about creating arrays or talk about using Clear or RemoveAt but these methods don't appear to be available for my array. I have an array of client objects called aClients if I try aClients.RemoveAt I get an error "System.Array" d...more >>

I try to use "\n" as line feed to put text into different lines in textBox of Visual Studio .Net, but it does not work. The text is still in one line. Does anybody know how to put text into different lines in textBox? Any help will be appreciated. Thanks in advance, Fang By the way,...more >>

Last night I had several thought about RAII and want to discuss a bit. Why doesn't CSharp support destructors in structs? Wouldn't that make RAII possible like in C++? When the struct goes out of scope, the dtor could be immediately be called (no GC needed). For that, you don't have to decla...more >>

i have an aray of bites " private byte[] ByteArray = new byte[4000]; " How can i parse this array to read integers, in other words assign first 4 bytes to one integer variable, second 4 bytes to another itneger variable and so on... Thanks... ...more >>