I have rather odd problem and I am not sure how to go about debugging it. I have an MDI application that I am deploying on the local intranet to about 20 users using ClickOnce deployment. I am just using the default setting in Visual Studio 2005 to deploy the app to an intranet web server. It ...more >>

Hello, Does anyone know any working Multiselect Dropdownlist that uses Checkboxes? Environment is ASP.NET and language C#. I would be very appreciated if someone would give some links to working solution. Cheers, ...more >>

Hi I have wrote a method in my C# class with the following code, to create an XMl file. The root element is suppose to have 3 attibutes. I can not get attributes to appear correctly. XmlDocument document = new XmlDocument(); XmlElement myxmlfile = document.CreateElement("FirstElement")...more >>

It will show the reference page when I right click a web project and select it's property page. There are some reference types: BIN, GAC What is the difference between these two types? ...more >>

Hello! I'm implementing support for disk based caching of binary resources (blobs) residing in a SQL database. This post is about choosing the right strategy. Because of the web environment, there are potentially many concurrent requests to a resource. I would like to keep the application ...more >>

Hi, I've got an application which is written in .Net 1.1. When I try to write a varbinary(max) field using the SqlCommand and SqlParameter classes I got an exception like this: "The conversion of varchar into varbinary is invalid". When I remove this field from my update statement, ever...more >>

Hi, I have an asp application (C#) including a bunch of RegularExpressionValidators and RequiredFieldValidators. Everything is fine when run locally or in Intranet. When it is Internet, RequiredFieldValidators are ok but RegularExpressionValidators are not. they cause the error message to sho...more >>

I have the following regular expression: (\s+-\s+|\s+\/\s+|\s+\\\s+| \t) Is there a better way to write this? I am looking to capture the following characters - / \ and tab. There can be 0, 1 or more space before and after these seperators. Right now it captures these characters if there is...more >>

Open file from resource as a stream? Or just how to read resource text file line by line?...more >>

Hi, Im a bit confused about when you cast a value type to an object. I have a property grid wich stores the data and the defualt as objects. the data is limited to primitive types, structs and strings. the structs only have primitive types. however once ive set the data to the defualt, if...more >>

In my C++ and VB days, it was easy to put a program on a network drive, and allow each user to shortcut to it. Then, when needed, I could just update the program on the network drive, and each user automatically had it the next time they ran it. Sometimes seems to be happening in CSharp. Now...more >>

I am working with Visual C# window and in my application I need to use a button ( NEXT) . The button should displays one panel with its objects each time it clicked. I already developed the codes for creating panels and their objects which will be questions and their answers. When the NEXT bu...more >>

All, I'm only getting half of an SQL XML result when I view the result in my application. When I serialize the result to an xml file and view it with notepad the first line begins in the middle of an element name that is somewhere in the middle of the result set. What might cause this? I...more >>

Hello Group I've developed an application that i want to secure with some licenses system, can anyone recomend a license system? The application is developed in Visual Studio .NET 2005 C# Kind regards Johnny E. Jensen ...more >>

I'm working on a plug-in architecture whereby my application dynamically loads assemblies based on runtime conditions. I plan to use Activator.CreateInstance to instantiate objects from the dynamically loaded assemblies. Activator.CreateInstance of course returns the created type as 'object...more >>

I have a dropdown combo box where the DataSource is bound to a CSLA BO returned from a WCF call. The dropdown list looks fine, but selecting an item returns "SYSTEM.RUNTIME.SERIALIZATION.EXTENSIONDATAOBJECT" (which seems to be related to WCF somehow) and I am not sure how to debug this. Does ...more >>

..NET 3.5 I have a Windows Service application and it does remoting, but when a client incounters an error the client get the following error message "Server encountered an internal error. For more information, turn off customErrors in the server's .config file." Where do I turn this o...more >>

Hi, I've a number of WCF services and other components (not services). I'm thinking of creating a centralized logging system. One possibility is to create a logging service that stores everything in a database table, but I was curieus whether this is the way to go; or are there better alterna...more >>

Hi, how can I add files (e.g. ini-files, xml-files, pdf,..), that should be installed with a ClickOnce deployed applications? Christian...more >>

Hi, I am trying to serialize List<List<string>> . With the following code [XmlArrayItem("DataRow")] [XmlArray("DataRows")] public List<List<string>> DataRows { get; set; } I get the following <DataRows> <DataRow> <string>123</string> <s...more >>

Hi, I have built an application containing a few projects (nothing that I have written)and there are a few compiler warnings (obsolete methods and the like). Does anyone know if these obsolete methods cause any performance issues if not corrected? I would imagine that they do, but would b...more >>

Hello, This is for a WPF (3.5) application. We have a requirement to produce sounds on an internal speaker (in the case that no external sound device is available). I know of Console.Beep(frequency, duration), but I wondered if there is a better, more controllable way. Basically, the u...more >>

Hi there, I have added a database model to my application and dragged a couple of tables on it. Then I wrote a couple of selects using LINQ to SQL and everything works fine. But I can't fingure out how to add new items. For example, I have a table named ServiceLog. I thought I could just go...more >>

Hi, I am writing a windows app in C# and referencing a lib built in J# and which I don't have the code for that requires a method to be overridden that contains a parameter defined as: java.lang.Exception I tried specifying the .net Exception class instead, but then I got an error mes...more >>

I have a 5x5 Matrix. Each cell consists a string value(ex:URL of a website) I want to find out which string value occurs( i.e. repeats ) maximum no. of times in the matrix. I have a hint that BINARY SEARCH TREE will be used here and that NODE class in c# may be used to implement trees. ...more >>

I have an application that is modifying the ENTER key to use this.ProcessTabKey() for data entry screens (replacing a green-screen Telenet app). I would like to do the equivilent of ths.ProcessReverseTab() for ALT-ENTER, but no such animal exists. Does anyone know how this could be done? ...more >>

Necesito que mi aplicacion (ASP NET - C#) envie un net send a determinadas maquinas de la red y no encuentro como hacerlo. Gracias...more >>

I have an application that uses the system.io.ports.serial class to receive data from a serial device. The device is sending a data stream of stx then 15 readable ascii characters then a cr. My datareceived event looks like: int iBytesToRead = com.thePort.BytesToRead; ...more >>

Hello guys........ please tell me ............. I want to do email validation like i have a userid entered by user new user.so problem is that i have to do the validation when i'll click on save button b'coz userid should be unique..... Thanks in advance ...more >>

i am preparing a website through .net technology on xp O.S.can user enter the data to the site even if he does not have the .netframework installed on his P.C. or is having windows 2000 installed...more >>

Hi, i TRY to create a windows apllication that insert in a Access DB name and surname; the Insert istruction Works but the the refresh of DataGridView doesn't works... the code is : public Form1() { InitializeComponent(); } #region Variabili ...more >>

Hi, I have a .NET / COM DLL. On the client the COM object is created by a application using VBScript (Windows Scripting). I try to deploy the .NET / COM DLL using ClickOnce deployment. I know that it is only possible to deploy a Windows Forms - no DLL. Well, my idea is to deploy a "dummy...more >>

Hello, This example: public class BaseC { public int x; public void Invoke() {} } public class DerivedC : BaseC { new public void Invoke() {} } is from here: http://msdn2.microsoft.com/en-us/library/435f1dw2.aspx I can access the original (hidden) method Invoke() by us...more >>