I am trying the db4o object databse and so far I quite like what I am seeing, but I also read this post on stackoverflow http://stackoverflow.com/questions/21207/db4o-experiences/24499#24499 indicating that not everything that seems so easy is easy. Right now, I have some questions regarding on how db4o is used in real world apps. So i...
Hi all, I need to replace all system. environment.newline (s) in the string returned by my function with "System.Environment.Newline + \t" (i'm trying to apply indenting) and I need to do this several times . now my question is which one is the fastest way to do this ? I know that stringbuilder is faster than string.replace but I dont k...
I have the following datatemplate: <DataTemplate x:Key="ColoringLabels"> <TextBlock Padding="0" Margin="0" Name="Username" Text="{Binding Username}" Foreground="Gray" FontStyle="Italic" /> <DataTemplate.Triggers> <D...
Let's say i have a 2d linear grid and a point in said grid. How do i map the point from that grid into a related non-linear grid? The red dot is the point in the regular grid and i want to know how to figure out where the point would go in a similar deformed grid (an example one is shown). I'm thinking of using the difference between ...
Why doesn't link simply use the == operator in joins if t can use it in a 'where' clause? ...
I just upgraded my operating system to Windows 7. Visual Studio 2008 also seems to work perfect. Next step is to upgrade my .NET application to use the new Windows 7 features. A quick seach with Google returned the following links: Windows API Code Pack for Microsoft .NET Framework Microsoft Windows SDK for Windows 7 and .NET Framework...
Here is the scenario. I'm having a List in my view model and I want to generate a toolbar - each button representing a CustomObject which will have the tooltip, icon etc. I'm defining a template to display CustomObject in a toolbar button and also define the toolbar button ItemSource to the viewmodel collection and ItemTemplate to the o...
I have this LINQ query. The date is stored as a string in the database, but I need to order by it. So I convert it to a DateTime, but it doesn't order. (from m in dbDataContext.TimeCards where m.TIMECARDDATE != "" && m.TIMECARDDATE != null orderby Convert.ToDateTime(m.TIMECARDDATE) descending select Convert.ToDateTi...
Hi I've DataGridView that bound a List<myClass> and i sort it by "Priority" property in "myClass". So I want to drag an "DataGridViewRow" to certain position to change it's "Priority" property. How could I "Drag & Drop" DataGridView Rows ?. And how to handle this ?. ...
The string length can change, height is the same. The font is large for visibility. But how do I do this? I know painting on the control directly. But how do I do this without creating an image file, but all in memory. Because the string image will change with user interaction. ...
What's the reason for this? I override OnPaintBackground and draw a string. It doesn't show up until I call this in the constructor: this.SetStyle ( ControlStyles.UserPaint, true ); But then I don't see the items in the listview. Why and how to solve this? EDIT: code protected override void OnPaintBackground ( PaintEventArgs peve...
Hi, I've tried to use Subsonic 2.2 & System.Data.Sqlite.Dll latest version (1.65.0), in my project. and recevied an error message, which gave me the idea subsonic got a problem with the sqilte provider. I've switched to it's previous version, 1.60.0 and it seems like the problem was solved. any info regarding this issue? does subsoni...
CPAN is a really helpful resource for Perl. Why isn't there a CPAN for .NET? Should there be one? Are there other programming or platform technologies that have a CPAN-like infrastructure? EDIT No one mentioned this: isn't the Comprehensive base-class library included in .NET one of the key reasons you would NOT expect to see a CP...
I am using Grammarian's ObjectListView. I changed my old listviews to that, but all I do is to fill in items. But when the app starts up and my mouse is over the listview, it immediately throws an exception for: System.InvalidCastException was unhandled Message="Unable to cast object of type 'System.Windows.Forms.ListViewItem' to type...
I'm trying to process Feedback Loop (FBL) messages to unsubscribe people that mark an email as spam (yes it's opt-in, and there is a one-click opt-out mechanism). My first attempt is to use Advanced MIME Parser/Creator/Editor. However, FBL messages from major ISPs such as AOL and Yahoo are not correctly parsed. I posted that particular...
I have made a program that has two threads, soon to be three, that is trying to get an image from a web cam from both threads at the same time. Is there a way to do this or is there a better way to do this? (using openCV 1.1) ...
I'm experimenting with C# using Visual Studio 2010 Beta 2. What I'd like to do is display data in a similar format as Windows Defragmenter does, i.e. in a grid consisting of many small rectangular elements. These elements should be turned off and on depending on data (i.e. having different colours) and customizable in number of elements ...
I am trying to add a task dialog-style button control to my .NET application (C#). It is labeled "Custom Button" in the screenshot below. What is the name of this control for .NET, or how can I get it in my .NET form? I need compatibility with XP (and other non-Vista, non-7 OS's). I do not need to create the entire dialog. I just ...
What are the differences between HasOne() and References() in nhibernate? ...