Hi, I'm writing a client/server app. I want to run my server on "Windows Server 2003" PC. This PC has two network cards. 1 for Internet and other is plugged into a switch. My plan is that I'll connect 2 or 4 PC to the switch and the server PC will give out DHCP IP address. I...more >>

I created a ASP.NET page using C# and I'm using two components to access a MS-Access database, which are: - oleDbConnection - oleDataAdapter The MS-Access database is in the correct directory, IIS has permission to write. Everything seems ok, but IIS says that it can't open the file becau...more >>

I'm got a little problem that I can't figure out. I have a UserControl and I'm trying to detect the Shift key. I'm using KeyUp and KeyDown event handlers to set a flag when the Shift key is pressed. My problem is that the handlers aren't getting called. I have the handlers registered with the ...more >>

Hi I have some problems understanding the properties for the scrollbar class. F.eks. how do I set the Maximum property in comparison to the Height property if I for example want to have the scroller to have half the size of the scrollbar? If the question is formulated a little weird, an explanat...more >>

trying to get a boolean value from DataReader (that is, result from a SQL query); boolean MyBool = MyDataReader.GetBoolean(3); well it works using that number 3 but of course I would like to do something like ... = MyDataReader.GetBoolean["IsLocked"]; since I don't always know the fie...more >>

Under visual basic there used to be a directory tree list box and file = list box controls that could be placed on a form and linked together. Is there anything similar for C# or VB.net, I couldn't find anything......more >>

In a report I have the simbol "ó" but when I print it, the simbol appears as ¾. I'm working in Spain. How can I solve this? Thank you very much ...more >>

Hi, I've got question: How to get any sounds from microphone and play them using the speakers? Thanks in advance...more >>

I'm having problems with the following code: public static void saveEncryptedSession(DataSet ds, string pathToSave) { const string encryptionKey = "base64-string-snipped"; byte[] myKey = Convert.FromBase64String(encryptionKey); XmlTextWriter w = new XmlTextWriter(pathToSave, Encoding.UTF8); ...more >>

How can I preload an image in an application before showing it in a panel? -pnp...more >>

Hi All, Can someone convert the following vb code into c# for me ReadOnly Property IEnumerator_Current() As Object Implements IEnumerator.Current Get Return baseEnumerator.Current End Get End Property Thanks, Jesse ...more >>

I am a developer in C# When I use Reverse engineering function in C# to export to Visio diagram then I received a message follow: Exporting UML model to Visio... Reverse engineering failed. Couldn't load the UML model into the Visio diagram. Error number 42. Could you help me? ...more >>

Hi Have a method that builds and returns a of specfic accounting codes to a datagrid textbox field. eg, if a user types in "200" the method builds & returns the code "200.00.00". also if a user types in "51" the method should return " 51.00.00" but I am finding difficulty adding a whit...more >>

All, I'm struggling with an OOP concept. Let me try to define what I'm wanting by using some classic examples. Let's say that I have classes called Square & Circle that derive from class Shape. Within class Shape, it has a method called Save to save the object to disk. It's defined in Sh...more >>

Hi guys, I am confused about the usage of "ref". Please see this code: private void button3_Click(object sender, System.EventArgs e) { DataTable dt = new DataTable(); AddColumn(dt); Console.WriteLine(dt.Namespace); RefAddColumn(ref dt); Console.WriteLine(dt.Namespace); ...more >>

What is the best way (or what ways have been successful for you) to notify a user on a website that their session has timed out? I've seen various sites around the internet (my bank, for example) which, when the browser is left untouched for an extended period of time, forward the user to a...more >>

Hi all. I'm working with the Tao OpenGL libraries for C# but ran into a problem getting a function to work. What I've done is: // Set current context Wgl.wglMakeCurrent(hDC, hRC); // get entry point of the function IntPtr pfnColorTableEXT = Wgl.wglGetProcAddress("glColorTableEXT"); ...more >>

I'm using the next code to get the source code from a web page and save it to disk, all works fine except that the width property is lost: wrRequest = (HttpWebRequest)HttpWebRequest.Create("www.server.com/page.aspx"); wrResponse = (HttpWebResponse)wrRequest.GetResponse(); srReader = new...more >>

Supposing I have a class "UserControl1 : System.Windows.Forms.UserControl" in an Assembly "UI.dll", now I create an Application project and want to use the "UserControl1" in another AppDomain, private void CreateUIInAnotherDomain() { UI.UserControl1 ui = (UI.Cls)domain.CreateInstan...more >>

Hello all: When I run my application in emulation, all of the program are disposed successfully, but the application can not be startup, is that my Dot Net Compiler mistaking? ...more >>

I've built a class and overroad the Equals method. I've gotten the warning below. I'm unfamiliar with the "GetHashCode" method. An explantion of the method and its relation to the warning would be appreciated. warning: 'myClass' overrides Object.Equals(object o) but does not override Objec...more >>

I have a 3rd party DLL with a function that has a return parameter of type object. After I make the call: messagingClass.eGetUnreadMessages(ref myId, ref msgs); when I look at it in the Locals window I get the following: - msgs {System.Array} System.Object [0,0] "AFPSDEV1" string ...more >>

Hi All, I have a dataColumn type of string which has values in form of range like 0-80 or sometimes just 1 value like 100. I want to add another column[numeric] which basically computes the count of the range & displays it. I know the hard way of doing this, but was wondering can Expression Pro...more >>

Hello All I'm using the Type tp = Type.GetTypeFromProgID(progID, machineName) call to get a COM object type from a remote machine. The wierd thing is that, even though the remote machine does not exist, I still get a System.__COMObject for tp. As per doc, I thought it would be null. Can someo...more >>

Is there a way to get the geometry of a HDD? ...more >>

Hello, Is there a known way to replace a pressed key by an other. KeyPressEventArgs.KeyChar is read-only so is there a work arround. I want to change the decimal point of the numeric keypad into CultureInfo.CurrentCulture.NumberFormat.CurrencyDecimalSeparator at anny time. Greet...more >>

I created a report with paramters and set the PromptText property of each parameter at runtime and then used the PrintToPrinter() method. All the parameter fields are blank. Is this the correct property? How do you do a print preview? Thanks again. ...more >>

I am using C#.I want to start my application so that its notify icon is added to the system tray, i don't want to show any starting form. I want user to interact through the notify icon...just like MSN. Is there any way to do this? regards, beenish ...more >>

I want to start my application so that its notify icon is added to the system tray, i don't want to show any starting form. I want user to interact through the notify icon...just like MSN. Is there any way to do this? regards, beenish ...more >>

Hi, I've a UserControl with the property AutoScroll = true. Thus, when child-controls overlap the visible area, the scrollbars are shown. How do I query the size or width of the scrollbars? In my DisplaySettings of windows I can set the width of the scrollbars (currently 17px on my machi...more >>

How does one figure out match.groups for a regex string? Here is the expression, "([12]\d{3}-[A-Z]\d{3})(\d{3})?((-)(\d{4})(\d{2}))?((-)(0\d{2})(\d{2}))?((-)(0\d{2})(\d{2}))?((-)(0\d{2})(\d{2}))?" and here is an example string 1013-A109400-480001-00701-05601-06501 . I've tried searching msdn...more >>

Hi Is there any document management that microsoft provides? A large organization need a tool that gets information and can generate documents based on a pre defined templates. Thanks ...more >>

Hi, I need to pass a structure between C++ DLL and C# client (both ways). Among other elements the strcuture must contain a fixed size array of integers. In C++ I can successfully declare a structure like this: public __gc class MyStructure { public: int* __gc arr; MyStructure(){ar...more >>

I have a winform base class in which I dynamically set a web reference Url: myService.Url = <WebServer> + "MyService.asmx"; where <WebServer> is pulled from my App.config file. There is no problem working with this base class and the solution compiles and runs fine. However, I am unable to...more >>

Using the "volatile" keyword, creates a problem if I intend to use any of the interlocked APIs. The compiler generates an error if I use the following line, for example: Interlocked.Increment(ref count); The error says that a volatile field cannot be used as ref or out, but if I don't u...more >>

Hi there C# experts, I'm building a C# windows applications that loads some OCX (made using VB 6), I'm able to load the OCX and then dispose it (at least apparently), but when I'm exiting my C# application a crash occurs. The error is: The instruction at "0x275abc77" referenced mamory a...more >>

Good Day I am new at this programming thing but I thought I would give Windows Forms a shot. I have a form that has 3 text boxes on it and a button which is Disabled by default in the properties. I want to "enable" the button when there is text in the 3 textboxes. Is there a property...more >>

Is multiple inheritance is possible in C#?...more >>

Hello; I have a text file. Assume that this file has some textual content. I want to append a text into this file at a specific position; not to the end of file. I assume that one way of doing this would be setting the stream length, shifting the characters after the position + lengt to the end...more >>

Hi I'm trying to create an installation application that will install MSDE. However, I'm having trouble in doing that. I have consulted the link http://support.microsoft.com/kb/325004/EN-US/ By following the steps given in the above mentioned link i am able to create the setup(it creates 5 f...more >>

Hi I don't know if it is possible, but I need to create a DLL in C# or VB.Net, that can be invoke by function Loadlibrary from Delphi. Is this possible? How? Thanks a lot Elton...more >>

I have encountered a problem (most certainly a .NET bug), that, for the life of me, I cannot figure out how to work around. Using Visual Studio 2003, with enabled XP Visual Styles. There are two possible scenarios here, the first one works properly, while the 2nd one doesn't. Scenario 1 ...more >>

Hello. How can I write binary data from byte[] to some file on disk? Thank you. ...more >>

I have a windows form that makes a call to my BLL to get some data. The windows form has a progress bar component that I would like updated as the data retrieval takes place. However, strictly speaking, the BLL is not supposed to know anything about the presentation layer. Also, since the ...more >>

Hi, the code below produces the following warning: 'System.Xml.Xsl.XslTransform.Transform(System.Xml.XPath.IXPathNavigable, System.Xml.Xsl.XsltArgumentList)' is obsolete: 'You should pass XmlResolver to Transform() method' Anyone know how to do that? XmlDocument _xmlDocument; XmlDoc...more >>

When you make a textbox control disabled ( txtText1.Enabled = false; ) You're left with grey text on a greyer background, which is not ideal. The Read-Only property is no use to me as I need to prevent complete access, so i've been trying to change the visual display of a control once I have ...more >>

I am trying to include two class files into a web service project. The structure I have is a top level solution and project in a folder and below that, the web service project in it's own folder. In the top level folder I have two class files, classA.cs and classB.cs. In the web service p...more >>

I know how to read from an application configuration file, by using System.Configuration.AppSettingsReader. This object does not allow writing a value back though. Does anybody know how to do this? The application is Windows Forms. Thanks. FireStarter....more >>

How can I call this? This doesn't work: SendReceiveTest4(); public static int SendReceiveTest4(Socket server) { byte[] msg = Encoding.UTF8.GetBytes("This is a test"); byte[] bytes = new byte[256]; try { // Blocks until send returns. int i = server.Send(msg...more >>

I have posted issues lot of times. Initially, some body will respond to that and once i replied there is no proper response after that. What is the way to let the people respond to my old, unsolved issues. Thanks & Regards Vadivel Kumar ...more >>

Hi, I'm using version 5.1, with .net framework 1.1, and I'm trying to create a very, very, simple application, where I would enter a text on a TextBox and when the user clicks on submit, it saves this data on a table. This is just for testing and learning purposes. My problem is that eit...more >>

I have an application that runs full screen on a system and I would like to be able to (at times) switch another program using an ALT-TAB like interface. However the system only has a touchscreen display so doing this from a keyboard is not an option. Is there any way I can instantiate the bui...more >>

Hi all: I'm using a struct of type Point that is being passed on to a method as a refrence type (boxing), the UpdatePoint method changes the coordinates of this point as such: Point p = new Point(); UpdatePoint( P ); .. .. .. void UpdatePoint( Object oP ) { ((Point) oP).X = 5...more >>

I use DataGrid in my web application for editing data. But the DataGrid can edit one row at a time. How can I let the user edit multiple rows at a time? ...more >>

I have a DateTime type data for my grid column. I want to display it in the cells as MONYR, as MAR05 JAN05 etc. Cannot find it in DateTime format, is there any quick way to do it (instead of convert my column type from DateTime to string and then parse it by myself)? Thanks a lot Chri...more >>

I've just started working with some people that have an odd setup and I'm wondering if someone can point out a better way of doing things (or what I'm doing wrong). They have a base form class, derived from the standard Form, but with the ability to show a list of panels in order. Each of t...more >>

Hi, I am writing a windows form application to send mail. I am using the System.Web.Mail namespace, but the Mail namespace is not being found. Should I install something or what am I doing wrong. Thanks...more >>

When I execute the following code: private void excelButton_Click(object sender, System.EventArgs e) { Response.Clear(); Response.ContentType = "application/vnd.ms-excel"; Response.Charset = ""; this.EnableViewState = false; System.IO.StringWriter tw = new System.IO.St...more >>

Hey everyone, I'm currently writing software for a project that uses a lot of Xml files for configuration. The project is written in C#/.NET. Each such xml file has a schema defined for it (Xsd file). This schema is not used at run-time. What we do is use XPath expressions to query for requ...more >>

Creating a user, setting various parameters ... can't set PROILE path ... anyone have a code snippet, Thanks, James...more >>

Hi, I am writing a windows application. To my form I have added a ToolBar componenet and have created a collection of buttons within it. I have also created an ImageList, where I have loaded the collection of images into this component. In the toolbar component I set the ImageList propert...more >>

Hi: Using the WinForms DataGrid, I would like to have the entire row highlight rather than just the cell that was last clicked. How do you do this? Thanks, Charlie ...more >>

All! Who knows how can I change the form image (left top corner)? I can add bmp and ico images as resources to the Windows Application Project and if I create a link on the desktop I see this icon correctly. But I can't change the left top corner of al forms. Thanks, Just D. ...more >>

Let's say I have a base class BaseClass that defines an event 'ValueChanged' and then I have inherited classes that have specific 'SomeValueChanged', 'SomeOtherValueChanged' events. I want to have 'ValueChanged' fired every time one of the value change event fires in the subclasses. My first tho...more >>

I’m sending mail form my C#/.NET assembly, and for that I’m doing authentication like that: MailMessage MyMail = new MailMessage() MyMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", "1") MyMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/se...more >>

Hi, How can I get a list of all Oracle Servers in my network? It isn't possible by calling NetServerEnum, the matching ServerType does not exist. Any idea? Regards Alexander...more >>

Hi, I have a windows form which can only be resize by height. At the moment, on the Resize event I have the following code to prevent the user changing the width of the form: this.Width = DEFAULT_WIDTH; Its not ideal this method, since the user can still see the window being resized (har...more >>

Hi, I have to send several messages at the same time and wait for the replies, so I use a thread for each message. //Get all the data at the same time. foreach(Thread thread in threads) thread.Start(); //Wait till all the data is retrieved. foreach(Thread thread in threads) thread.Joi...more >>

I wrote an assembly in C#/.NET that includes some personal information. But this information can be revealed by opening the assembly in tools like the ‘Microsoft .NET Framework IL DASM’ and ‘Reflector’. I do not want to expose this code. How do I hide it? -- Regards Sharon G....more >>

Hi, Even I referred Syncfusion.Tools.dll in my project, while I compiling I got the following error message. 'AnimationDelayInMilliSeconds' is declared in project 'Syncfusion.Tools.dll', which is not referenced by project 'Inventory.WinApp.dll'. What could be the problem? kumar ...more >>