I did not try running the code, but my thought is: When you use a solid color, the updated values can be written straight to memory without any checks. Once you alpha blend then each pixel will have to be merged with whatever is in the current image. So each pixel goes from a single write to read, calculate, then write. Sure they could have optimized even further and simply not do anything if the alpha channel is 0, but apparently they did not. But you can do this easily yourself -one you have the CellColor you can check if it has a 0 alpha channel and skip setting up the brush and drawing when this is the case.

I'm sorry for the confusion. There are 2 files to a UserControl when created from the application: In this case UserControl1.cs UserControl1.Designer.cs The latter file contains the standard Dispose() code which I did not supply since it's just standard code. For arguments sake, I started with the code you referenced 'as is'.. That means I copied and pasted the whole sample into a project file, built it, and tried it by loading it into a from from the toolbox; it did not function as described... 1. When the mouse moves into the control, the control does not show the highlight the border as the MouseEnter() method should do. 2. The property that is added in the designer "OutlineColor" does not show in the grid properties. I've managed to get the debugger to work in DesignMode and set a break points in the MouseEnter() method and the OutLineColor.Set property and the OnPaintAdornments() method. None of the break points are hit when the control is loaded into the form. thanks

mo1492 wrote: I Knew if I asked the question I would get it to work. That's the way if goes, sometimes - it's known as Rubber Duck Debugging[^] :laugh: "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt AntiTwitter: @DalekDave is now a follower!

Thank you for your help :)

Actually that's basically my hack except that the dataArray comes from my own xml class that loads the xmlfile data into variables (ie an array). The xml class formats the data and my custom DataGridView class loads from the xml class in the way you suggest. Thanks for you suggestion. :)

Wow, I knew that. I wrote some code some 'years' ago in c++ to manipulate bitmaps with rotation and flipping. Forgot all about it. Thanks for pointing that out. It's starting to come back to me. :-D :-D

You beat me. I just created a test app in Mfc myself and found that out. I was confused because Explorer somehow displays 3 lines. Must be custom control because Spy does not show what kind of control it is. Thanks a for your help. ;)

speedbump99 wrote: s = "c:\Users\public\public documents" ' Error - Could not find part of the path. "C:\Users\Public\Documents" Not "public documents" onder "public", that's redundant. Bastard Programmer from Hell :suss: If you can't read my code, try converting it here[^] "If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.

You just need a constraint on your generic type parameter: Class ColumnList(Of T As New) ... Public Sub New() Me._Column = New T() End Sub ... Generic Types in Visual Basic (Visual Basic) | Microsoft Docs[^] "These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer

Thanks Dave, This app is for my personal use only and I am 'infinitely' sure that this control will never, ever, ever be used anywhere else. But I do appreciate your input. Best regards.

I'm not a Reg Exp expert, but I recall that '.' matches anything EXCEPT newline so try replacing (.*$) with ((.|\n)*$). You may also need to switch on multiline matching

Stupid, Stupid, Stupid me. I can't believe I worked for hours on this and it turns out to be a data error. "12:00" verses "12:00:00" Thanks to a test program I found, XPath Visualizer, I found the problem immediately Sorry for my Stupidness :( :( :( Thanks