I tried to port from VB to C# and now I'm stuck. I couldn't convert the VB line readdata = dt.Rows(0)(data) as C#: return dt.Rows[0][data]; Error detail: Error 1 Cannot implicitly convert type 'object' to 'string'. An explicit conversion exists (are you missing ...more >>

Hello, I want to build a custom reporting engine in .NET. Wht are the consideration and I need to provide the user design facilty at run time. Thanks, ...more >>

I am trying to send email using this fucntion can you guys help me please find the mistake I am using my Gmail Credentials and the only exception error I get is Failure sending email Any help is greatly appreciated ===================== MailMessage mailMessage = new MailMessage(); ...more >>

Hi, I have an XmlNodeList and I need to reverse it. Just like Array.Reverse(), but it has to stay as an XmlNodeList. Any ideas? ...more >>

Hi all, What is, in general, the preferred practice to transfer data between business objects and the data layer? To be more specific, I have a couple of business objects with state data that are stored in external storage. The data layer take care of communicating with the storage and return...more >>

is it possible to implement some safe way of performing two or more instructions in a kind of "atomic" way? consider this: we have two queues (implemented on top of an List<T>). now we need to move an element from one queue to another, so we need to do something like this: queue2.Enqueue(queu...more >>

Hi, could you tell me what is the equivalent under .NET of TRACE macro used under VC++ ? I would like to display some status of my program in output window for an easier debugging. thanks a lot, Al....more >>

After I remove all items from a combobox, the last selected item remains in the display area. I've tried: mycbox.SelectedText = string.Empty; and mycbox.refresh(); How do I clear the display area of a combobox after removing all of its items? Thanks, Brett ...more >>

Hi there, I have to integrate a previewer into a desktop application, that retains some links to resources (local files, internet-links, personal mails - this is not of certain concern). This window should be able to give a preview of the document: be it an office (word, excel), an image f...more >>

Hi, How do you set a datetimepicker (set to time only) to 00:00 programatically ? -- rgds, Wilfried [MapPoint MVP] http://www.mestdagh.biz...more >>

hi, as in subject - how can i do that? when my service starts up it performs some tests within OnStart method. i would like it to refuse to start if some of these tests fail. there is simply no point in running my service if certain criteria is not met. in that case i would like to log test r...more >>

Hi, I'm using a modal dialog box to input data. I have created properties on the dialog form to capture the data so that it might be read from the main form via the dialog form. This approach encapsulates the data & I can implement the business logic in the dialog form. This leaves me wi...more >>

what is best way to talk to https webpages within .net? any good librarys for talking to https websites? ...more >>

When using Delphi, In order to create connection strings, there was a method to show Data Source creation page, string ConnStr = PromptDataSource(); What is the C# equivalent of this method ? Thanks ...more >>

Hi, I learned a little about the model view presenter pattern at a conference this last week and am experimenting with it. It's working pretty well but I have a question. I am trying to use it to reset info in a combo box. Below is some sample code for my view interface and the presenter:...more >>

Hi there, Is there a way to achieve flicker free drawing on a Panel? I know it is possible on a form using the double buffered property. However, I do not know how to achieve the same using a Panel. Please can somebody help. Regards, James ...more >>

In c#, How can I get the "accountExpires" without having to register the ACTIVEDS COM object on the client? DirectoryEntry returns almost all value with the COM object except for dates. Why MS designed .NET object returning COM object? I hoped we got rid of the complexity of COM in .NE...more >>

Hi, I have an object that manages a kind of Variant type. For comfort reasons I want to have the possibility to do this: MyPropclass prop = new MyPropclass(); string m = "blabla"; prop = m; How can I do this? Is there a way to overwrite "="? Or must I extend "string"? Than...more >>

Hey All, I have created an application and an installer for it using Visual Studios "Setup and Deployment" project template. It works great (for the simplicity that I require) except that it doesn't allow multiple instances. The user needs to be able to install 1 or more copies of the progr...more >>

Does anyone know what objects to use to query a SQL database to get back all of the tables and then be able to get information on the tables and column information (name, datatype, max length etc...) *** Sent via Developersdex http://www.developersdex.com ***...more >>

What is the easiest way to convert C# to C++? And more specifically, how to convert a C# / WinForms (.NET 2) to a C++ / Qt solution? ...more >>

Hi, I have written several pieces of software and would like to hear any thoughts anyone has on what measures i should take to ensure(!) its stability and security at the hands of the *users*. I have obviously put error handling in :O) but have heard of loads of other things i could do like obf...more >>

I'm trying to use Overlapped I/O from C#, and utterly failing. I've tried to boil down my code to as simple an example as possible, in hopes that you people can point to where I'm going wrong. I've included my test program. The behavior I'm seeing is that the callback routine is never called,...more >>

I am invoking a file download using the following code: Response.Clear(); Response.AddHeader("Content-Disposition", "attachment; filename=" + downloadFile.Name); Response.AddHeader("Content-Length", downloadFile.Length.ToString()); Response.ContentType = "application/octet-stream"; Res...more >>

Hello: I have a C# app that has a class called DataAccess that handles the SqlClient based connection to a MSDE instance on my laptop (MSDE Release A). I can access the database that I created from a Foxpro app, but when I try to access it from the C# app, I get an error "Sql Server doesn't ...more >>

I am working on a project where I have to take a binary file and convert it to a PDF file. The binary file is stored in a database as a Varbinary. What is the best way to store the binary file. Like is an object, array, interger, etc.. Also can you point me in the right direction to viewing t...more >>

Hi, I want to know if this is the most efficient method of fixing my problem: I have a custom class and I need to maintain an array of these items. Initially I used MyCustom[] a = new MyCustom[someSize]; However, a new requirement has popped up which means this array might change size (a...more >>

Disappointed, this is not the first time I'm posting this kind of a request for help, but no helpful answer was posted yet. I'll try make my question as clear as I can: (1) I wish to write an XML file. this file will contain any number of parameters to be used in my C# code as database. (...more >>

In the .NET Framework 2.0 SDK I create a file TestApp.cs - mixed case. Does anyone know why, when I compile entering a csc command from the Visual Studio 2005 Command Prompt, I need to enter the file as "testapp.cs" lower case?...more >>

I have a vbscript (below) I want to rewrite in C# but I cannot get it to work (unless there is a better way to do it). The script will combine 2 lines if the (next) line contains a "+", otherwise just write the line. #### vbscript: Do While Not InputFile.AtEndofStream Line = Input...more >>

I'm trying to add a chile node to a document that looks like the following: <Configuration> <Main> <one> ONE </One> <Two> TWO </Two> </Main> <Multiples> <Entry> <Name> TEST </Name> <Date> DATE </Date> <Other> OTHER </Other> ...more >>

Hello, I am trying to capture empty lines, for example : 1. ABCDEF 2. 3. abcdef I would like to capture line number 2. I am using the following regex - new Regex("^$",RegexOptions.Multiline); RegexBuddy captures the empty lines correctly why doesn't the regex engine of .net manages to...more >>

I'm new to c#. I am trying to insert or update data to my tables, and in the debug mode everithig looks ok. when i exit and look in the database all the update or insert did not take effect. i'm using Visual c# 2005 express and SQl 2005 express. I tried to insert a button with this code : ...more >>

Hi all, I've got a SQL Server database that contains zipped information stored in (binary) image fields. To complicate things, this zipped data is combined with plain-text data. I've verified the zipped data to be readable by SharpZipLib by writing the field contents to a file and using a b...more >>

Hello, Can someone help me with this: I have taken string frm an html source, and it looks like this: <a class="v11" href=Sweden-232433.html>Sweden</a> (30millions) Now I am trying to take out name of the state(in this case "Sweden"). What is best way to do this? Using RegEx validator? ...more >>

Hi, I need to create an application in C# that will be fairly simple from a UI prospective and that will be able to retrieve some information from a db. The overall look and feel should be nice but not too sophisticated. There are two areas that will need to shine though: first a datagrid which...more >>

We can view MSIL code with reflector or ILDASM, but how can we view native code generated by JIT compiler at runtime? ...more >>

Hi, Does anyone know how to cancel the selection of a block that has been copied programmatically using C# and Excel Interop. This is my current code: rng=XLApp.get_Range("OrigRows",m); //selects the row named OrigRows XLApp.CutCopy...more >>

How does one access dynamic controls by name (or wahtever other means)? I have the following: Dim newbtnPick As New Button newbtnPick.Name = "SliceButton" & CurSliceNum newbtnPick.Location = New Point(SILoc.SIPickbtn, SILoc.SIY3) newbtnPick.Size = New Size(SILoc.btnW, SILoc.btnH) new...more >>

hello, i want to use win32 dll in my c# application.i copied that dll in my bin/debug folder and then i used one of its function like this...... [DllImport("XCENLogInterface.dll")] public static extern void SetPatientLogFileName(string pPatientLogFileName); if i call this method it is gi...more >>

Hi, I'll be working on mail merge in the coming few days, is there any pointer to the tutorials or help please? ...more >>

I'm porting code from VS 2003 to VS 2005, and can't get column sorting to work as before. This is code I found somewhere and used without acctually understanding it. I still don't fully understand it, which makes it hard to see what's wrong now. In VS 2003, it allowed me to click on a ListVi...more >>

Hello , i had one VC++ dll . and i need to use that functions in my c# code. it is logger dll. i want to use that logger functions from my c# and log the details. how to use that VC++ dll in my C# through interoperabilty service.. can u please explain? ...more >>

I wrote tiny sample of smart client using Win32 API and get parent IE's handle as follow [DllImport("User32.dll")] public static extern IntPtr GetParent(IntPtr hWnd); IntPtr cHandle = this.Handle; // this is smart client IntPtr pHandle = GetParent(cHandle); // oHandle will be IE'...more >>