I have a table with a binary column which stores files of a number of different possible filetypes (PDF, BMP, JPEG, WAV, MP3, DOC, MPEG, AVI etc.), but no columns that store either the name or the type of the original file. Is there any easy way for me to process these rows and determine the type of each file stored in the binary column...
I'm using the following code System::Diagnostics::Process^ p = gcnew System::Diagnostics::Process(); p->StartInfo->FileName = "tnccmd.exe"; p->StartInfo->UseShellExecute = false; p->StartInfo->RedirectStandardInput = true; p->StartInfo->RedirectStandardOutput = true; p->Start(); System::IO::StreamWriter^ tnc_stdin = p->StandardInput; ...
I have a calendar control derived from DataGridView. A custom item hover event is already in place. When handling the event, I have the item that was hovered and the mouse location. What is the best method to show a pop-up window with detailed information about the item? Should I use a stripped down form (no titlebar,controlbox, etc) and...
I am currently building a .Net userform using C# and I am populating it with custom user controls. The controls each have an accessor that gets and sets the object that contains the data that the control will be populated with. At runtime, everything works great, but at design time I will get errors in the form designer. The errors ar...
I have a list of items in a hierarchy, and I'm attempting to parse this list out into an actual hierarchy of objects. I'm using modified pre-order tree traversal to store/iterate through this list, and so what I have is a subset of the tree, including all children, ordered by their "left" value. For example, given the tree: Item A It...
Would someone explain how to get LINQ working with Sqlite. ...
Now that the source code to the .NET Framework has been made available, is there any way to actually view it that doesn't involve using Visual Studio to step into a framework class? Several times now, I've been curious just how something works and wished I could peek at some code, but don't feel like putting together an application and d...
I can start with my own .NET dll. I have a dll I use in all my web projects (around 10) and I have util classes for FTP, zip, imageresizing, extensionmethods and a generic singleton class. I think it is a common practice and I just thought it would be interesting to hear what people put in their 'Utils' dlls EDIT: What small code gems ...
Here's a question for those of you with experience in larger projects and API/framework design. I am working on a framework that will be used by many other projects in the future, so I want to make it nice and extensible, but at the same time it needs to be simple and easy to understand. I know that a lot of people complain that the .N...
I have a simple app that uses an SQL Express 2005 database. When the user closes the app, I want to give the option to back up the database by making a copy in another directory. However, when I try to do it, I get "The process cannot access the file '...\Pricing.MDF' because it is being used by another process." I closed the connecti...
Hi, I hope I don't get flagged for asking this here. Does anyone know of any Purchase Order system written in .net (opensource)? Thanks Edit ~ Web or desktop based is fine. If the source code is available (opensource) I could handle the integration. The backend can be SQL Server or mySQL, I'd prefer SQL Server. ...
I have a csproj that has a reference to the Framework64 version of System.Data. When I try to build using MSBUILD/TFS on another machine it fails as the 64-bit DLL doesn't exist. Should I bind to the Framework version, or will this limit me when running on 64-bit machines? Does .NET redirect the binding to use 64-bit when possible? ...
I have a .NET 2.0 server that seems to be running into scaling problems, probably due to poor design of the socket-handling code, and I am looking for guidance on how I might redesign it to improve performance. Usage scenario: 50 - 150 clients, high rate (up to 100s / second) of small messages (10s of bytes each) to / from each client. ...
Scott Gu just posted about a new set of charting controls being distributed by the .NET team. They look incredible: http://weblogs.asp.net/scottgu/archive/2008/11/24/new-asp-net-charting-control-lt-asp-chart-runat-quot-server-quot-gt.aspx The million dollar question is ... will they work with MVC, and if so, when? ...
I have two strings <EM>is <i>love</i></EM>,<PARTITION /> and <EM>is <i>love</i>,<PARTITION /> I want a regex to match the second string completely but should not match the first one. Please help. Note: Everything can change except the EM and PARTITION tags. ...
This is to all the C# gurus. I have been banging my head on this for some time already, tried all kinds of advice on the net with no avail. The action is happening in Windows Mobile 5.0. I have a DLL named MyDll.dll. In the MyDll.h I have: extern "C" __declspec(dllexport) int MyDllFunction(int one, int two); The definition of MyDllFu...
Context: I have a WPF App that uses certain unmanaged DLLs in the D:\WordAutomation\MyApp_Source\Executables\MyApp folder. I can double click the exe and everything runs. Next I have a Word 2007 code-behind project, that references relevant managed DLLs in the above folder and tries to do the same thing.. bring up the App UI. After ...
How to Connect to PickBasic database using Ole db driver .. I need it badly help me out ...
I have a dll that contains a dot net assembly - common intermediate language. The problem is that it's lacking documentation and I need to figure out the api like available classes, properties and methods, correct parameters to pass etc. Whats the best way to do this. I need some sort of viewer/inspector but I couldn't find any. Thanks...
Hi, I need to determine the number of pages in a specified PDF file using C# code (.NET 2.0). The PDF file will be read from the file system, and not from a URL. Does anyone have any pointers on how this could be done? Note, Adobe Acrobat Reader is installed on the PC where this check will be carried out. Thanks in advance for your ...