What are the Differences between Debug & Release? Is the byte code the same and there is only difference in JIT compilation? And is there a great impact to Performance? In c++, there where checks in generated code that verified in debug mode that objects are valid, checks to verify the integri...more >>

Hello...Maybe I am not understanding how object arrays are created - but this problem has bothered me for some time now - Take a quick look at the code and then my 'problem' below: #CODE# Public Class CustomerInfo Dim _billto() As BillTo Public Overloads ReadOnly Property Billing()...more >>

I have an application that need to launch acrobat reader. But before I open acrobat reader, I want to check there is any existing acrobat reader opening and kill them first. What can I do? Can anyone kindly sugguest some idea? Thanks *** Sent via Developersdex http://www.developersdex.com *...more >>

Hello Just a quick question.. I have a MDI app that allows the user to open several child forms.. Nothing special. However, what I would like to know is how to prevent a user for opening the same form twice. I don't want to use the myfrm.ShowDialog method, but rather be able to check & see if ...more >>

Hi all, I am trying to install the .NET framework 1.1 runtime package on Windows 2000 SP4. While the installation starts well, I get the following message box during the installation process : Please insert the disk : Microsoft .NET Framework (English) : OK Cancel Pressing the OK but...more >>

I've made a report with Cristal wich I use in a webform and it worked great but when I made the copy to the production server it didn't work. Does anybody know wich could be the problem? ...more >>

How can i asign permissions for an existing group to a particular folder only (so that no one else besides the group members could read, write or delete the files contained in the selected folder) programatically with c# or by command line using a .bat ?? regards Marcelo López Infocorp Ur...more >>

I came across this link on the MS site as a refrence for the hardware requirements for .NET Enterprise Architect. Are MS Smoking Something, I have been developing in .Net for a while and I honestly cant see how such under-specked hardware can be used. Anyone know where I can get a REAL WORLD ref...more >>

Hello all, I was considering ordering the 60 day trial of VS.NET, then I saw the specs for install which stated a Pentium II class machine @ 450 Mhz. I meet all of the other requirements with ease, but mine is a PII-400, so I am now wondering if this is just a recommendation, or if the insta...more >>

How can I do this in one line foreach((string answer in myansList) && (string qKey in qKeyList)) { //do something } Thanks ...more >>

Is there a simple way to accomplish the following without importing vb6 into a .net project? If IsNumeric(txtTextBox1.Text) Then.......more >>

The tooltips when appeared on rollover a variable name or an expression have gone away. Does anyone know where to get them back? Thanks Jack ...more >>

Is there a simple way to access the serial RS232 ports com1: and com2: without using mscomm32.ocx (i.e. is there a file stream within .NET) I've being going through the documentation and can't get any hits on anything reasonable (like com1, rs232, com ports). .NET has intrinsic support f...more >>

Hi i have this error with this code: An unhandled exception of type 'System.IO.FileNotFoundException' please help.... //--------------------------- #include "stdafx.h" #using <mscorlib.dll> #using <system.dll> using namespace System; #using <TestDLL.dll> using namespace Ing; int _tmain(...more >>

Is the webcontrol used to drive msdn and other microsoft content available as a downloadable webcontrol for ActiveX or .NET? Or has anyone seen user versions on codeproject or the like? Erik...more >>

Hello Is it a part of the Web servece standard that the web servece always wil return a spesification file? (the Service1.wsdl) We have a company that are ofering a web service to us, but I can't connect to it with Visual Studio.net becace it does not return the wsdl file at its URL Is it...more >>

Hi I'm currently developing a simple VB.NET Windows Service that shall receive files (including data) as an input and write these data into a Access database. For this, I use the OleDbCommand and - Database objects, provided by the framework, and the follwing functions: OleDbCommand.Exe...more >>

I want to have a splash screen come up before the app. loads, I am using mdi...more >>

Does anyone have an example of querying Active Directory using ADO.NET from C#? I am trying to populate a DataTable with first name, last name and email address but whenever I try to do this using DirectoryServices I get an error "Object reference not set to an instance of an object". Co...more >>

Hi All I have a problem with getting a DataTable to submit changes back to the database when calling AcceptChanges. What I do is simplyfied this : 1) I set up a SqlDataAdapter with SelectCommand, InsertCommand, UpdateCommand and DeleteCommand pointing to each a stored procedure. Di...more >>

I'm creating a Web service and a Windows Forms application to consume it. My question is about throwing a custom exception inside the WebService. Can that be done, and can the custom web service be handled in the Windows Forms app? For example, suppose in my WebService, I have the following ex...more >>

Hello All, Is it possible to export data directly from MSH Flexgrid to MS Excel? There is some problem in exporting data from HFlex grid populated with Hierarchical recordset.This recordset is created by using Shape..Append commands.The Hierarchical recordset has parent -child and grandchild hi...more >>

Hi! Are there any built in classes (or methods) in the framework that can encrypt to some simple string like the one you enter when registring an Microsoft application (xxxx-xxx-xxxx-xxxx)? I have tried using i.e. DESCryptoServiceProvider (and other) and ConvertToBase64String but these string...more >>

Hi All, I wanted to ask how i can add values from textboxes etc into a specific coloumn and row of a datagrid. I.e does the datagrid have coordinates that i can refernce when i want to add values. e.g if i want to add a value to the second row and second column do i write coordinates su...more >>

Hi.I have a problem. I wrote a DLL File for myProgram that is very important for me but I Lost the source code of my DLL how can I reach the source code of my DLL from the DLL File. Please help me. ...more >>

I am working on a web form that requires me to open a new window. I can do it with just embedding the jscript in the html but is there a way to do by embedding the jscript in the code-behind with the vb code....more >>

I want to know hot to get contents out of datagrid ...more >>

Hi, Does anyone have any example of how i can manage forms in my application?? I want to be able to reference my form instances that are currently open from other forms. why cant i open and close forms as easily as in VB6?? i.e if i have formHomepage open and i click on a link to o...more >>

This probably sounds very strange, but Ive racked my brain for some solution. I have an asp.net page that renders some basic html tables. When I print the page, a 2"x2" block in the upper left corner appears to be white, as if something was blocking the underlying table from printing. It lo...more >>

Can anyone recommend modeling software? The company is using VS.NET for Enterprise Developers, and Visio for Enterprise Architects is only compatible with VS.NET for Enterprise Architects. I mainly want the software to create class diagrams. Thanks, Todd...more >>

What's the difference in using the private variable as opposed to the actual property in a class module? Which is better or more efficient? ( LoginObject.Save (_loginName) or LoginObject.Save (me.LoginName) FOR EXAMPLE: Class MyClass Private _loginName As String Public Property Log...more >>

I have a C++.net user control which has two winform timers in it. When the 'poll' timer ticks, it stops itself, sends out a poll, and starts a 'retry' timer. When the response to the poll (or an independant response) is received, the poll timer and retry timer are stopped and the poll timer is ...more >>

i need to add custom data to the version tab of the dll (in the property pages). in vs 6 i linked to an rc file that contained the needed info (name value pairs) and the build automatically inserted the info. in c# i tried to add custom attributes (for the assembly) but that didn't work. ...more >>

I have an asp.net(2003) form that uses web server controls event architecture. The form has edit, cancel, save, delete buttons on it. When the delete button is clicked the following events fire. PageLoad btnDelete_Click PageLoad btnDelete_Click One of the other buttons executes it's c...more >>

Hi, I am calling COM + dll from VB.net class. When two clients invoke same method of com+ dll concurrently both client requests fail. COM + dll is insatlled in Library package. I got same problem when when I changed packaege from Library to server. Any idea how to resolve this? A...more >>

Hi, Can anyone tell me if it is possible to add link buttons to a datagrid that has its source set to a datatable that i have created? i.e i want the user to be able to select a room from various comboboxes and textboxes on my form. when they are satisfied they press OK. the row is then ...more >>

I have a chance to get a good deal on VS.NET 2002 Professional and hopefully somebody can answer a couple of questions i have on it. 1) It says according to MS it supports Visual C++ .NET. Am i correct in assuming this is C#? 2) Is this IDE a viable platform to create C# and asp.net ap...more >>

Hello, I am new to programming and I am taking a class on programming this semester. I am writing a program but I cannot seem to find out how to copy/paste/cut code to add so that the text from any of my textboxes can be cut/copied/pasted to the clipboard. Any help would be extremely u...more >>

I starting to use Visual Studio .NET 2003 creating C# Windows application with SQL Server and I get problem with method Fill() for which when running ends with System Error even with the most simple cases which I copied from a tutorial. everything else works right for ex Preview Data exc...more >>

I am inheriting from a form that has a tab control on it. The tab control has two pages. I can't seem to access the second page in the designer for the inherited form in order to drop controls on it. Any ideas? Thanks....more >>

I use VS.net 2003 and VSS 6a. Whilst working on the network the integration between VS.net and VSS works perfectly. But when I open a project whilst disconnected from the network I get some problems. When I open a solution VS.net tells me it can't find the VSS database and gives me an o...more >>

System.Web.Mail.SmtpMail appears to rely upon CDO. Such code therefore works fine on my development box which has Outlook 200 installed. But when the application is deployed to the production server (running W2K Server) the code fails. Do I have to install Outlook or an Exchange client on ...more >>