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 | About the source code
Cisily | 0:30 13 May '09 |
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i am a new c# learner, and now i am did something about the thumbnails,and i think your project was good ,i'd like learn something from it . So i hope the source code .
thanks .
Mailto: nichoish@sohu.com
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| Still inconsistency with the thumbnail and the filename
martinmoesbypetersen | 1:24 10 Jan '09 |
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Really usefull control - I love it, thax.
But I still see some inconsistencies between the thumbnail and the file it represents....
Try this one for size :
1) Add the control and a trackbar slider to a form.
2) Set the foldername to a folder with +50 images
3) Sync the trackbar control value to the ThumbnailSize property
4) Make the control reload everytime the Thumbnail size is changed...
Result :
On every refresh of the Thumbnail list, the image index doesn't seem to be reset resulting in items getting the false images index of the ImageList.... and it seems to fit with the index which was the active index, before the reload was called....
I cannot seem to find the problem as everything checks out - could someone pls give me a hint?
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| Thumbnail Generation
Member 3525863 | 23:09 17 Dec '08 |
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Thanks for the sample given.
I need a structure like showing "n" number of folders(which contain images) in one panel and selecting one among those, would show you the images as thumbnails in another panel.
I have done usingImagelist and picturebox controls, but it is time consuming while loading.
How to reduce loading thumbnails and folders.
Thanks In Advance
Vijay
vbr_dotnet@yahoo.co.in
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| My vote of 1
Wertugo555 | 22:53 8 Dec '08 |
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Коновалы вы господа. Look at Adobe Photo Stoke. Bad
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| Great Work!!
Richard Blythe | 20:11 10 Oct '08 |
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I've been looking for a good article that addresses this issue.
Super job! 5 from me.
I've used up all my sick days, so today I'm calling in dead.
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| full version of the application
Member 3682548 | 20:55 3 Aug '08 |
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Hi Sreejai,
I would like to get full version of the application. Mainly I am interested on how to write a windows Explorer like form with thumbnail view.
Thanks
Dush
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| Error
mfmanca | 10:57 30 Oct '07 |
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I've used this nice control on a pc with VS2005 and VS2008 installed and everything worked fine.
When I moved the EXE and the DLL files onto another pc I got an error when launching the EXE
EventType : clr20r3 P1 : jthumbnaildemo.exe P2 : 1.0.0.0
P3 : 464ec32f P4 : jaicontrols P5 : 1.0.2695.24022 P6 : 464ec16c
P7 : c P8 : 10 P9 : system.io.directorynotfound
What's missing on that pc?
Does this control need a certain .NET framework installed?
Thanks
Maurizio
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Very Rare Error I just create a folder [ProgramFiles]\Microsoft Visual Studio 9.0\Common7\IDEImages
Works Fine!!!!
?????
Edward Ceballos
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| getting filename of selected items
Elsys | 19:05 19 Oct '07 |
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im having trouble getting the filename of the selected items in the contorl while the normal listview control seems to work. How might I do this?
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| Stop BackGroundWorker
fracasado | 8:56 31 Aug '07 |
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Hi I need to stop BackGroundWorker.
I use your code in my app, but I allow the user to edit an image.
When it happend I open with a Process my paint App.
So I set the Process.WaitForExit.
When I return to my app, I want to reload all the images but it only reload the images that haven't load yet.
Could you help me?
Thanks
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1. Do you edit an image after all of them have been loaded?
2. It would be better if you could modify the component so that only the edited picture is re-loaded. If you want my help, please send me your source. I can try it out.
3. For the time being, you can explicitly call the 'ReloadItems()' method after returning to the program.
Thanks
Sreejai
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| can this be modded to work for mpeg thumbnails ?
UltraWhack | 8:09 31 May '07 |
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Great stuff. I would be interested to see your amended project Michael. Please can you email it to me ultrawhack @ yahoo.ca
I am very interested to see this work for mpegs by showing me thumbnails of all avis/mpegs/movs/qt in a given directory.
Another feature that would be great would be to be able to set the frame from the mpeg that the thumbnail is taken from...
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Hi UltraWhack,
Most of the modifications which Mike had pointed out (including a function to load from a string array) has already been included in the latest uploaded version. However, I will try to work on the mpeg option.
Thanks
Sreejai
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There is a commercial activex out there that does mpeg thumbnails with choice of frame that is displayed on thumbnail.
http://www.viscomsoft.com/products/mithumbnail/
Its functionality can perhaps be imitated/improved on.
Here's some other interesting code snippets on this topic
http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=458385&SiteID=1
http://www.devcity.net/Articles/219/1/article.aspx
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| Bug: Thumbnail image inconsistency with real image
mpgjunky | 7:06 17 May '07 |
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Hi,
First of all, thanks for the control, great job. I wanted to write something identical for a project, but you've saved me the hassle. 
However, unless you are already aware of it, you have a bug in that thumbnails displayed do not correspond to the real images (including in your demo program). To clarify, your thumbnail showed image from b.jpg, but the tag was a.jpg (I hope I have explained myself correctly ).
The problem is with:
foreach (string filter in arExtensions)
{
string[] strFiles = Directory.GetFiles(folderName, filter);
fileList.AddRange(strFiles);
for (int i = 0; i < strFiles.Length; i++)
{
FileInfo fiTemp = new FileInfo(strFiles[i]);
Items.Add(fiTemp.Name, 0).Tag = strFiles[i];
}
}
fileList.Sort();
EndUpdate();
if (myWorker != null)
{
myWorker.RunWorkerAsync(fileList);
}
...you are adding the items from strFile[] which is in a certain order, but the thumnails are generated using fileList which is a sorted list.
The correct logic would be something like:
List fileList = new List();
string[] arExtensions = strFilter.Split(';');
foreach (string filter in arExtensions)
{
string[] strFiles = Directory.GetFiles(folderName, filter);
fileList.AddRange(strFiles);
}
fileList.Sort();
for (int i = 0; i < fileList.Count; i++)
{
FileInfo fiTemp = new FileInfo(fileList[i]);
Items.Add(fiTemp.Name, 0).Tag = fileList[i];
}
EndUpdate();
...basically get files, add files to the List, sort the List, and then add the Items based on the order of the [sorted] List. This will ensure the correct thumbnail will shown for the correct tag name (or filename).
(PS: The above fix may not be necessarily the most efficient, but it works ).
(PS: I have added a new method LoadItems(string[] _filelist) in case you (or anyone else is interested) - which creates thimbnails from an array of filenames).
Cheers,
Michael.
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| Crashes if you make it start loading new thumbnails before it's finished
mrhaan | 8:40 11 Apr '07 |
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You should probably check what's going on with the BackgroundWorker before asking it to RunWorkerAsync.
I easily got the demo project to crash with these steps:
1. Click the browse button.
2. Choose a directory with enough images that it will take some time to load all the thumbnails.
3. Immediately click the browse button again, and quickly choose another directory.
4. If step 3 was completed soon enough after step 2, the application crashes with a "This BackgroundWorker is currently busy and cannot run multiple tasks concurrently" error.
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| BackgroundWorker
BushRob | 13:11 27 Mar '07 |
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Hi,
It appears that the Background worker process continues to run even after the thumbnails are finished being populated. Have you come across this and modified your code since to prevent this from happening?
Thanks.
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Hi,
Could you please explain why you said that the process continues to run? Once all the thumbnails are loaded, it calls the RunWorkerCompleted method correctly.
Regards
Sreejai
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Hi
Well I had a similar problem (well I still do  ).
I'm using your listview in a custom user control. If I dispose of the custom user control while the images are loading, then straight after create a new instance of the custom user control and display it, you get an error.
"This BackgroundWorker is currently busy and cannot run multiple tasks concurrently."
splitContainer1.Panel2.Controls.Remove(objCustomControl);
objCustomControl = null;
objCustomControl = new SlideShowCtrl();
objCustomControl.Dock = DockStyle.Fill;
splitContainer1.Panel2.Controls.Add(objCustomControl);
objCustomControl.thumbList.FolderName = "Some file";
I think the problem is, when the backgroundworker is running it doesn't get disposed or stoped when the listview is destroyed.
I'll try and see if I can fix my problem, but help will definitely be appreciated!!!
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You can fix the problem easily by using:
if(myWorker.IsBusy)
myWorker.CancelAsync();
Obviously, you need to insert the above code before the control is requested to re-run, i.e. myWorker.RunWorkerAsync(fileList), and in the constructor add myWorker.WorkerSupportsCancellation = true.
Regards,
Michael.
-- modified at 12:34 Thursday 17th May, 2007
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| No source code
cykophysh39 | 22:53 24 Feb '07 |
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Hi,
Your solution sounds interesting but sadly no source code is attached.
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Oops...Don't know why it didn't get uploaded to the server. Will do it immediately.
Thanks
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