Hi I've previously constucted my .NET 1.1 data access, via a Data Access Layer (DAL), that was all in code. Now that I have access to the DataSet control in .NET 2.0, I'm looking for opinions or pointers into how to implement a DAL under .NET 2.0. Is it best to use controls or code?? Are ther...more >>

I am writing a shared object (Dll in Windows) and I am making extensive use of the STL. I am getting lots of warnings like this: ClassA.h(139): warning C4251: 'ClassA::indexarray' : class 'std::vector<_Ty>' needs to have dll-interface to be used by clients of class 'ClassA' wit...more >>

While running this code "Invalid token 'try' in class, struct, or interface member declaration" error is comming. Please advice me...... I am new to asp.net. try { string connString = "Server=server04;Database=Northwind;Integrated Security=SSPI"; string sql = "SELECT * FROM EmployeeD...more >>

I need to get some data into "perfmon" format. I'm using DateTime.Now(). How do I convert "3/16/2006 10:43:29 PM" to "03/16/2006 22:43:239.123" Thanks in advance! -mj ...more >>

i want to display a message box when the user click the submit buttone, but some fields are not filled(those fields are which can not be validated using available validators) i know in C#.net, the asp doesnot support messagebox class and I also cannot add the System.Windows.Forms namespace can ...more >>

Hi I've previously constucted my .NET 1.1 data access, via a Data Access Layer (DAL), that was all in code. Now that I have access to the DataSet control in .NET 2.0, I'm looking for opinions or pointers into how to implement a DAL under .NET 2.0. Is it best to use controls or code?? Are t...more >>

G'Day. Anybodey got an idea on this problem. Say I have a function object doCast(object obj, Type t); It's job is to cast the obect (obj) to a new type (t) and return it. Sounds so simple, but I cant seem to find a way to do it without some prety extravigant hacks. Can anybodey think...more >>

Hi all, Can any one explain the relationship between real & transparent proxy? I couldn't fully understand it from the explanation at MSDN. Thanks, Sharon. ...more >>

Hi, I am using .NET 1.1 with professional 2000. What are the steps we have to follow to make set up to C# console application. My application is having one dll. Example: Application Name is : tc200 (This is console application) My Dll name is : installer (This is Class Library file) A...more >>

Is it possible that I can have a c# window service run under different display name? ...more >>

hi all, I would like to copy the contents of a text file to clipboard using C#. The program should do the job of Ctrl+A & Ctrl + C. How do i go about? Arun ...more >>

Hi, I am using .NET 1.1 along with 2K Professional Operating System. How to create a new drive in a system which is not available in my system. Example: My System is having the A,B,C,D,E these drives.. I need to create another drive like F which is not available. I have the code for ...more >>

Hi ! How can I play "standard system sounds" in C# ? ( "standard system sounds" =3D The kind of sound you hear when you use = MessageBox.Show() ) Thanks ! steph....more >>

Hi. I have a window app. After clicking a button i need to display another window ( Options window ) in such a way that "getting back" to previous one is blocked, unless "OK" is pressed. How to do this? Thanks PK -- Pozdrawiam Piotr Kolodziej http://piotrkolodziej.waikru.info ...more >>

Hi, I am having few .net source files(.cs or .vb) and I want to dynamically = generate the corresponding .net project file(.csproj or .vbproj) for = them without using visual studio.So that I could be able to generate and = compile the project on the enviroments where Visual Studio.Net is not...more >>

I'm trying to understand C# type casting. The following code will not compile unless I Cast item to a String. private static String myData; foreach (DataRow row in MyTable.Rows) { foreach (Object item in row.ItemArray) { myData = item; } } However when I use plus-equ...more >>

In my .aspx page, I am trying to read file that is on a different on the company network. When I map a drive to it and call from within my .aspx page, I get this error: Could not find a part of the path 'Z:\Events.nss'. Description: An unhandled exception occurred during the exe...more >>

Hi, I am trying to write a program that includes a webbrowser ( System.Windows.Forms.WebBrowser ) , it works good. I have two question about that 1 - how can i make this webbrowser to use proxy using WebProxy object or something like this 2 - popup windows doesnt get session's , what ...more >>

Hi, My ASPX code is trying to read a file on a mapped drive. But I get the error below. Any help would be greatly appreciated. Could not find a part of the path 'Z:\Events.nss'. Description: An unhandled exception occurred during the execution of the current web request. Please review...more >>

hi guys. I need to clone multiple times an object and I am succesfully cloning using the regular serialization process, using a MemoryStream. My problem is that after cloning the object more that 7 or 10 times then my computer's memory gets flooded and every time I call the Clone() method the...more >>

Hello! I use VS 2003. I have a control for example System.Windows.Forms.TextBox(); I drag this System.Windows.Forms.TextBox() control into a form. Now assume I want to add more functionality to this System.Windows.Forms.TextBox() which mean I want to create a subclass to this System.Window...more >>

Hello, Can anyone please give me any referencese or links related to database handling in windows forms using C#.Net. ...more >>

I am trying to do some P/Invoke custom marshaling and am looking for a little help on custom marshaling a value type. I am working based on Kate Gregory's "Arranging Custom Marshaling With P/Invoke", which is unfortunately in C++ with managed extensions; I am working in C#. As with Kate's e...more >>

Hello, Can someone please explain the load order of different .net document types? Situation, I have a masterpage that has a few usercontrols on it, and an aspx page that uses the masterpage. I have noticed that the contenPlaceHolder on the aspx page runs before the masterpages PAGE_LOAD a...more >>

I'm new to this and was wondering what the options are for interpreting the command line using a CLI program. Specifically methods for interpreting the parameters passed to the program on the command line. I noticed that visual studio adds the following for you when creating a new CLI program:...more >>

I want to connec to oracle database via ado.net 2.0. the statement OracleConnection ocn = new OracleConnection(); throws an exception: The type initializer for 'System.Data.OracleClient.OracleConnection' threw a.... It seems that i need ODP.NET , How to move forwa...more >>

I have several classes that are Ienumerable and we use them to populate datagrids and Listboxes. Now however I need the actual column (ie property name) thus in pesdo-code For each Property in myObject dynamicallycreatedCheckbox.text = property.tostring next ...more >>

I have a bit of C code, that creates an instance of a .Net class that has been built as a type library. Everything is working as expected, I can pass strings to methods in the object. What I would like to also do is pass a pointer to C function to one method to store it as a callback, then...more >>

I've been programming as a hobbyist for well over 20 years and I've finally decided to go back to school and get certified (MCPD). But what are my chances of finding employment? Are all the good programming jobs going to India? ...more >>

This is probably a simple FAQ I missed in my reading & googling. I've been using C# for over a year but I don't know the best way to handle a simple class that will be called many times from many objects. The class doesn't have to save state, it is really a simple function. IIRC VB6's "modu...more >>

In OOP literature we read frequently about "interface" - a term which is apparently used to mean different things depending on context and possibly language. ..NET however provides for the Interface type - as a specific and unique type (amongst the class, struct, enum, etc types). There is ...more >>

Hi, I've created a Person-Object which implemts INotifyPropertyChanged. This Person-Object contains an Address-Object which implements INotifyPropertyChanged too. Then I create a BindingList<Person> which is the DataSource for my BindingSource. I created some TextBoxes bound to this Bind...more >>

Hi. I have a Queue<T> that I need to serialize, but when I try, I get the error: "You must implement a default accessor on System.Collections.Generic.Queue" It is my understanding that the default accessor has the form, "function (int index)". But, that doesn't make any sense for a queue. Th...more >>

I have C API just like this: enum void getinfor(const struct inputinfor *a, const struct outputinfor ** b) i use p/invok to translate it to [DllImport("fmd_access.dll", CallingConvention = CallingConvention.StdCall)] internal static extern void getinfor(ref inputinfor a, ...more >>

Can anyone tell me either a) how to find the user of a process or, failing that b) how to find the currently logged in user with .NET1.1 under Windows 98 without WMI. -- Dave...more >>

I'm having a very frustrating time with the .NET installer project. I can't make it uninstall a previous installation succsessfully. I also need to create an uninstall icon in the program group and can't figure out how to do that. Do any of you know a site where I might find some tips on ...more >>

Hi I'm getting an error while deserializing an xml into object. [FormatException: Input string was not in a correct format.] System.Number.ParseDouble(String s, NumberStyles style, NumberFormatInfo info) +0 System.Double.Parse(String s, NumberStyles style, IFormatProvider provider)...more >>

Thanks Robert ...more >>

I have written a little application which copies files from one location to another location. Before it copies the file, it ensure the directory for both the from and to locations is valid. It also ensures that the from file exists. All that being successful, it attempts to copy the file, b...more >>

I need to use some pointer-based "unsafe" code, I'm not sure if this option is still available. I selected "Always show solution" after I read Peter Bromberg's tips, but I don't see the option to "Allow unsafe code" from the project property screen. Thanks a lot if someone with in-depth kno...more >>

Hello everybody, I have a problem towards the following topic. There is a class like MyColor and a class like MyRectangle that has a property called FillColor which is of type MyColor. Now it should be able to say MyRectangle rect1 = new MyRectangle(); rect1.FillColor = "Red"; Th...more >>

Am porting a program from .net 1.1 to 2 in which I've done some pretty painful work in order to customise a datagrid. On installing Visual Studio 2005, I can't seem to find the old data grid, only the new data grid view. I understand that this can be quite slow at times, and since I am writing...more >>

hi I'm wondering whether there is a way in C# to be able to see whether a program has been installed or not? I want to create a distributional executeable that will have a few components and show which has been installed already and if it hasn't been installed then allows them to install it...more >>

Hi, When creating an ASP.NET project in VS2005 : where are the project files (.csproj, .sln, ...) ? The only files I can find are the aspx and .code behind-files. thanks Chris *** Sent via Developersdex http://www.developersdex.com ***...more >>

This Library is not Importing.. ADsSecurity 2.5 Type Library *** Sent via Developersdex http://www.developersdex.com ***...more >>

Hi, Does anyone know how to generate class structures from my xml schema from Visual Studio, not by typing "xsd /c <xmlschema.xsd>" in the command prompt Is the "Custom Tool" property the way to go? I have tried to create an external tool entry and set the Custom Tool to the name of the entr...more >>

normally, the IE gets data from Website. then IE deal with the data and show it to user. now, I want to get the data before the web site transmits data to IE. exactly, I wanna intercept data before IE show it to user. I will deal with it , then transmit it to IE. It will be done behind. User c...more >>

Hi Group, In my application I am using "Range Validator", validator is set for a textbox with range 1900 - 9999. and I am also using "Validation Summary" problem is when I run the application i get a run-time exception Compiler Error Message: CS0234: The type or namespace name 'Global' doe...more >>

Hi, How to set File or folder permissons to all users while I am creating the File in administrator. Once I restatt my machine I login into the normal user. There I dont have the permissions to write a content On that file. Need to set the permissions to all users in C#,NET 1.1 version....more >>

I have the following code: Session["CurrentUser"] = new CurrentUser("TEST"); When I postback to the server, the Session["CurrentUser"] is null. My guess is a only the refence to my actual class is stored, rather than the class. Looking on the internet, one solution posted was populating...more >>

Hi, How to set File or folder permissons to all users while I am creating the File in administrator. Once I restatt my machine I login into the normal user. There I dont have the permissions to write a content On that file. Need to set the permissions to all users in C#. Any body h...more >>

I want to pass an object to a dialog box, and have the dialog box work on the object, so that when the dialog box closes, my program now sees the altered object. This turns out to be not as simple as passing a pointer in a native program. How can I pass the object into the dialog box const...more >>

Hi I've been setting the location of a cursor file like this: this.Cursor= new Cursor("HandCur.cur"); I've just found out (the hard way) that if, elsewhere in the application, the user browses for a file using the openFileDialog then the default path is changed and the application looks f...more >>

Hello everyone... Just for the record, I'm a newbie to this data binding thing... In my C# application I need to bind a cell of an Access database table to a multiline TextBox. How should I do it? I've tried to bind the TextBox using the VS IDE (which ended up in binding to a table column)....more >>

hi what class can seize http request in .NET framework or c#? thinks!!...more >>

I'm just wondering if there is any easy solution to change the pop-up display that is shown when a color property is displayed in the properties grid? We've got a property grid in our application and we don't want customers to be able to select System Colors from the list when selecting a col...more >>

Is there a good reason that Decimal does not have Ceiling() method, only Math class has? Thanks! ...more >>

Dear all, I have written a C++ com object: STDMETHOD(myfunc)(INT* array) Now I need to pass an array from c# to com. I generated a COM interop and it the signature of the function is myfunc(ref int) in C# I have an array of ints. If I call myfunc(array[0]) and try to access...more >>

Does anyone have some nice code samples? I need to put some data (confidantial data in a small "database"). I plan to use a xml schema to define the structure and serialize/deserialize to read/store data with the XmlSerializer class. But I need to protect the data with some kind of encryption...more >>

Hi, is there a way in Visual Studio.NET 2005 to start an application without VS to first start the build-process ? Even when the previous compile didn't result in errors or warnings, or the source code hasn't change, he nevertheless executes the build-steps first. I'd like to skip the bu...more >>

hello, i have the following problem. i want to write a code that enables the user to call functions from a unmanaged code .dll at running time . so i have to use the late binding . i tried the following code but it doesn't walk : Assembly assemblyInstance = Assembly.LoadFrom(@"C:\myData\Unma...more >>

Hi, I've just released the book Practical .NET2 and C#2. More info is available on the site http://www.PracticalDOT.NET You can download sample chapters about CLR, Security, Threading/Synchro and some C#2 features here: http://www.practicaldot.net/en2/Sample.htm Here is a link to some ...more >>

I have study a vb codes: Dim Asm As [Assembly] = [Assembly].GetExecutingAssembly() How can I do in C# ...more >>

Hi, how to convert a char array(byte[]) to a string variable? byte[] buffer; string strTest; /*the blow codes all get type of 'buffer': System.Byte[]! strTest = buffer.ToString() strTest = System.Convert.ToString(buffer) */ Thanks. ...more >>

Hi, I need to read/write data from/to binary files that have an already defined. This means I can't define classes with the [Serializable] attribute. The files also have arrays with variable length. This means I can't use the StructLayout attribute like in here: http://www.builderau.com.a...more >>

Hi, I have created a webrequest that is failing at the server because it has Encoding =UTF-16 in the header. The server people want me to remove the entry altogether. I can't see where I have control over that with the WebRequest class. Any ideas on how this is done? Thanks Bob ...more >>

Hi, In my C# Windows Form application, I would like to simulate clicking a hyper link and go to a particular Http://... How do I make that in my C# program? Thanks for help. Jason ...more >>

Hi, When I try to return an object of type "System.Diagnostics.PerformanceCounter" from a web method (written in C#) i got the following error: Cannot serialize member System.ComponentModel.Component.Site of type System.ComponentModel.ISite. The above web service example is given in a t...more >>

If I drag and drop Table from Server Explorer into the WebForm, it will create an DataAdapter including all the Insert,Update, Delete, Select Statement but After the Insert and Update Statement, there is a Select statment. What is the purpose of that Select statement ? What happen if I remove ...more >>

Hi, I have a Webrequest that uses a XML doc for its 'body' I need to know the length of the doc so I can set Webrequest header ContentLength. Currently I am using an XMLTextWriter to a filestream, reading that stream back in to a Byte Array and writing the ByteArray to the Webrequest poststrea...more >>