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I am using an edit box to filter strings I have populated in a single column gridview. It works - and I love it, but its slow.
Based on the code I'm using which I believe I found elsewhere here - is there a way to make it run faster? I am pulling in a list of GPO's, and there are probably 500 items...
You ignored the most basic issue. Use a DataTable and filter that. Your code is not very good, and I do not know of any programmer that would try to code a filter like that. A Listbox can be data bound to a DataTable object and the table object can be directly filters.
I recommend learning a bit about PowerShell beyond just old batch or Basic language methods. Remember that you are using and advanced hi-tech coding system. Old ideas won't work well, and things get worse when you apply that to WinForms.
Here is a PSF with a demo of how to use data bound listboxes. Two files. Put both in the same folder.
Yes. Use a DataBound Listbox and filter the underlying DataTable. It takes only one line of code to do that, and it is almost instantaneous for less than a thousand strings.
Another simple method if you have a small number of rows is disable updates before the loop and re-enable them after the loop. In a loop each time you make a row hidden the whole DGV will be redrawn. That may be the most time consuming issue.
To disable layout updates: $form1.SuspendLayout()
To re-enable layout updates: $form1.ResumeLayout()
welp.. I did give it a go converting my initial "textchanged" input box event to work on a listbox - the issue I had there was the "visible" property is not valid for a listbox.
So I'm assuming simply reverse engineering what I'm using right now isn't going to work with a listbox.
Any further pointers, or even a spoiler would be delightful.
You ignored the most basic issue. Use a DataTable and filter that. Your code is not very good, and I do not know of any programmer that would try to code a filter like that. A Listbox can be data bound to a DataTable object and the table object can be directly filters.
I recommend learning a bit about PowerShell beyond just old batch or Basic language methods. Remember that you are using and advanced hi-tech coding system. Old ideas won't work well, and things get worse when you apply that to WinForms.
Here is a PSF with a demo of how to use data bound listboxes. Two files. Put both in the same folder.
Oh I do not disagree with anything you said. Its been about a 31 year long learning process but with very little time to dedicate to it because I'm tasked with so many other duties. And yes, I did misunderstand your initial reply - the second one got through my head a bit better.
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