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Hi, I hope you can help me / give me some hints


What I'm intending to do:
I'm implementing my own GUI-Designer and therefore I need a Table/Grid-Control.

To be more specific:
I want to implement a custom Table/Grid-Control, where I can add a user-defined amount of cells and columns. This Control is in a way comparable to the TableLayoutPanel, where every Cell includes a Label-Control. Every single cell should be clickable (in DesignMode) and have their own properties. In addition every single cell should be able to switch between simple Textfield, Radiobutton, Checkbox.


What I have done so far:
I have implemented my own control ("Table") which extends the TableLayoutPanel, where every Cell gets filled with a custom Label-Control. Furthermore I coded my own Designer (extends ParentControlDesigner) to get the Glyph-Functionality for Resizing Cells etc.


This works fine for very small Tables (e.g. 3x5), but the performace for large Tables (20x50) is really awful. I think the reason is, that the TableLayoutPanel is containing that much Labels. The VisualStudio internal Designer has the same (even slower) problems when creating a large TableLayoutPanel and fill every cell with a panel. It's nearly unusable when resizing the Control.

I have deactivated the refresh of my propertygrid already, but still too slow. In my opinion the performace-lack is due to the resize events of every single lable when Resizing the whole table.


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Are there better approaches to my problem? Is there a better way to implement a simple but big table/grid where the user is able to modify the properties for each single cell at design time?




Thanks a lot in advance for any hints
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1 solution

Plenty of table grids are available here. There's even a very popular one[^] by our esteemed leader.

My bad. Didn't realize it had to be in C#. Here's a C# one called SourceGrid[^]. There's probably others. Just use the CP filtering on the language you want.
 
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akamper 18-Jan-11 8:02am    
Thank you for your answer. I have already found that, but this is a MFC Control and I need a WinForms Control. Obviously the TableLayoutPanel is far too slow for large Tables (as I have found out (google) that a lot of other people facing similar performance problems, but in none of these discussions I could find a solution for this problem)
Bassam Abdul-Baki 18-Jan-11 8:04am    
Did you look at SourceGrid? I updated my answer.
akamper 18-Jan-11 8:12am    
Thanks, not until now. I will have a look at it
thatraja 18-Jan-11 10:12am    
It's a great control(SourceGrid) BAB, 5!
akamper 19-Jan-11 5:12am    
I have tested the grid a little bit now. Its really great and powerful. Unfortunately there is no design time support implemented, which is a big need for my project (where I am trying to implement a small GUI designer).

I will have to try to add some basic design time functionality to the grid, so that the rows and columns get displayed in design time at least. Hope I can handle that.

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