C# Discussion Boards - CodeProject

ali69929-Mar-13 4:43

29-Mar-13 4:43

Hi Arif_Khan

You are here: Microsoft .Net > C# - Image Processing > Histogram Equalization

this up location folder not found, please again update this folder project for download

HEKP

ali69929-Mar-13 4:43

ali699

29-Mar-13 4:43

Hi Arif_Khan

You are here: Microsoft .Net > C# - Image Processing > Histogram Equalization

this up location folder not found, please again update this folder project for download

Re: HEKP

Dave Kreskowiak29-Mar-13 5:04

Dave Kreskowiak

29-Mar-13 5:04

If you have a problem or question with an aritcle, post it in the forum at the bottom of that article.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

List View Shift Selection behaves indifferently

rakeshkava29-Mar-13 0:13

rakeshkava

29-Mar-13 0:13

Hi

I have a WPF list View and It has some contents say.

Row1, Row 2 , Row 3, Row 4, Row 5..

Also I have 2 arrows in application which moves the item in the list view Next and Previous.

When I shift select Row 3 to Row 5 all 3 gets selected
Now I click Next and the selection selects Row 4, as we consider first click as the recent item and Next should move the selection to Row 4..

Until this all works fine.

But now when I do shift selection from Row 4 to Row 5...

Row 3, Row 4, Row 5 are getting selected..actual result should have been only Row 4 and Row 5..

I have tried many different ways ...but could not find a proper solution..Looks like items are not cleared from selection set of ListView..Any help would be really appreciated

Re: List View Shift Selection behaves indifferently

Richard MacCutchan29-Mar-13 1:55

Richard MacCutchan

29-Mar-13 1:55

Are you clearing the selection set on the click of your button?

Use the best guess

Re: List View Shift Selection behaves indifferently

rakeshkava29-Mar-13 2:02

rakeshkava

29-Mar-13 2:02

Thanks Richard

But I am not clearing Selection set on click of Next/Previous button.

But when I click Next the UI shows one item highlighted and after that when I do shift selection ...It also selects the previous one along with the current ones...

How can it remember the selection of Previous action when on Next click the SelectedItems count is One..and after shift selection It gets the old one back again?

Re: List View Shift Selection behaves indifferently

Richard MacCutchan29-Mar-13 2:11

Richard MacCutchan

29-Mar-13 2:11

Since we have no idea what your Next button does, it is impossible to say what is happening.

Use the best guess

Re: List View Shift Selection behaves indifferently

rakeshkava29-Mar-13 3:06

rakeshkava

29-Mar-13 3:06

Hi Richard,

I think selection is behaving indifferently after Next/Previous operation ...Let me Dig more into it and get back to you.

Thanks
Rakesh

Re: List View Shift Selection behaves indifferently

rakeshkava31-Mar-13 22:51

rakeshkava

31-Mar-13 22:51

Hi Richard,

I just tried a sample where I have a ListView and Two Buttons Next and Previous....

public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
lvw1.Items.Add("Row1");
lvw1.Items.Add("Row2");
lvw1.Items.Add("Row3");
lvw1.Items.Add("Row4");
lvw1.Items.Add("Row5");
lvw1.Items.Add("Row6");
lvw1.Items.Add("Row7");
lvw1.SelectedIndex = 0;
}

private void Next_Click(object sender, RoutedEventArgs e)
{
lvw1.SelectedIndex = lvw1.SelectedIndex + 1;
}

private void Previous_Click(object sender, RoutedEventArgs e)
{
lvw1.SelectedIndex = lvw1.SelectedIndex - 1;
}
}

I make first item as selected by default.

And then on Next and Previous I just move the selected index according to the action.

Here also we can observe that when I do Mouse down and select an item and then do shift select..everything is good. for example ..Mouse down on Row2 and then Shift select Row 4.

Row2,Row3,Row4 gets selected..All good.

Now I do click on Next Row3 gets selected...Now when I do Shift Select Row 5

Row2,Row3,Row4,Row5 gets selected. which is wrong as the expected selection should have been Row3,Row4,Row5.

Now I am confused whether this is the existing behavior of WPF listview or is there a workaround for the above...

Also if we keep doing Next and then do shift selection after several Next operation I find that shift selection keeps all the selections in memory and selects bunch of rows..

Any help would be appreciated.Need this feature shipped in a week Frown | :-(

Thanks
Rakesh

Re: List View Shift Selection behaves indifferently

rakeshkava31-Mar-13 23:50

rakeshkava

31-Mar-13 23:50

Hi Richard,

As a workaround...

looks like I found the solution @

http://stackoverflow.com/questions/11950021/wpf-listview-shift-selecting-multiple-items-wrong-start-item

Need to change the SelectionMode on Next and Previous Operation and set it back

private void Next_Click(object sender, RoutedEventArgs e)
{
lvw1.SelectionMode = SelectionMode.Single;
lvw1.SelectedIndex = lvw1.SelectedIndex + 1;
lvw1.SelectionMode = SelectionMode.Extended;
}

private void Previous_Click(object sender, RoutedEventArgs e)
{
lvw1.SelectionMode = SelectionMode.Single;
lvw1.SelectedIndex = lvw1.SelectedIndex - 1;
lvw1.SelectionMode = SelectionMode.Extended;
}

Thanks
Rakesh

Re: List View Shift Selection behaves indifferently

Richard MacCutchan1-Apr-13 0:02

Richard MacCutchan

1-Apr-13 0:02

Well that is the obvious answer, but you also need to check that you are not falling off either end of your list. If your selected item in the above is the last or first in the list then your index could be set to -1, or 1 beyond the end, which would be incorrect.

Use the best guess

Re: List View Shift Selection behaves indifferently

rakeshkava1-Apr-13 0:14

rakeshkava

1-Apr-13 0:14

Hi Richard,

Thanks a lot...It was just a sample ...I just wanted to be sure that issue was not specific to my logic in Next/Previous.

Appreciate your help.. Smile | :)

Thanks
Rakesh

Re: List View Shift Selection behaves indifferently

Abhinav S29-Mar-13 3:57

Abhinav S

29-Mar-13 3:57

If you are doing selection manipulation via code, it might be that you are not clearing the local variables you have that hold the selected text.
Check if such a scenario does exist.

WP Apps - Color Search | Arctic | XKCD | Sound Meter | Speed Dial

Re: List View Shift Selection behaves indifferently

rakeshkava31-Mar-13 23:00

rakeshkava

31-Mar-13 23:00

Hi Abhinav,

I just tried a sample where I have a ListView and Two Buttons Next and Previous....

public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
lvw1.Items.Add("Row1");
lvw1.Items.Add("Row2");
lvw1.Items.Add("Row3");
lvw1.Items.Add("Row4");
lvw1.Items.Add("Row5");
lvw1.Items.Add("Row6");
lvw1.Items.Add("Row7");
lvw1.SelectedIndex = 0;
}

private void Next_Click(object sender, RoutedEventArgs e)
{
lvw1.SelectedIndex = lvw1.SelectedIndex + 1;
}

private void Previous_Click(object sender, RoutedEventArgs e)
{
lvw1.SelectedIndex = lvw1.SelectedIndex - 1;
}
}

I make first item as selected by default.

And then on Next and Previous I just move the selected index according to the action.

Here also we can observe that when I do Mouse down and select an item and then do shift select..everything is good. for example ..Mouse down on Row2 and then Shift select Row 4.

Row2,Row3,Row4 gets selected..All good.

Now I do click on Next Row3 gets selected...Now when I do Shift Select Row 5

Row2,Row3,Row4,Row5 gets selected. which is wrong as the expected selection should have been Row3,Row4,Row5.

Now I am confused whether this is the existing behavior of WPF listview or is there a workaround for the above...

Also if we keep doing Next and then do shift selection after several Next operation I find that shift selection keeps all the selections in memory and selects bunch of rows..

Any help would be appreciated.Need this feature shipped in a week Frown | Frown | :-(

Thanks
Rakesh

Re: List View Shift Selection behaves indifferently

rakeshkava31-Mar-13 23:49

rakeshkava

31-Mar-13 23:49

Hi Abhinav,

As a workaround...

looks like I found the solution @

http://stackoverflow.com/questions/11950021/wpf-listview-shift-selecting-multiple-items-wrong-start-item

Need to change the SelectionMode on Next and Previous Operation and set it back

private void Next_Click(object sender, RoutedEventArgs e)
{
lvw1.SelectionMode = SelectionMode.Single;
lvw1.SelectedIndex = lvw1.SelectedIndex + 1;
lvw1.SelectionMode = SelectionMode.Extended;
}

private void Previous_Click(object sender, RoutedEventArgs e)
{
lvw1.SelectionMode = SelectionMode.Single;
lvw1.SelectedIndex = lvw1.SelectedIndex - 1;
lvw1.SelectionMode = SelectionMode.Extended;
}

Thanks
Rakesh

Re: List View Shift Selection behaves indifferently

Abhinav S1-Apr-13 20:22

Abhinav S

1-Apr-13 20:22

Cool.

WP Apps - Color Search | Arctic | XKCD | Sound Meter | Speed Dial

Regarding About Image Url

Member 583355028-Mar-13 23:45

Member 5833550

28-Mar-13 23:45

Hi Everybody Good Afternoon,

i have developed intranet web application the hr person will upload the image i will store the location
"\stplsvr03\photos\" + txtticketno.Text.Trim() + ".jpg"

here txtticketno the photo stote this name

same i have developed apllication intranet using another server
in that server if i give the imageurl=@"\stplsvr03\photos\" + txtticketno.Text.Trim() + ".jpg"
the image only showing in internet explorer non showing fire box
any one give the solution

Re: Regarding About Image Url

Manfred Rudolf Bihy29-Mar-13 1:09

Manfred Rudolf Bihy

29-Mar-13 1:09

The problem you're observing is due to the fact you are using a backslash \ as the path separator and not the forward slash / as written in the specification. IE is being "user friendly" (DAU) and being a child of windows it also accepts backslashes. I will not rant about how MS has done a lot of harm with this irregular behaviour because IE's stupidity doesn't stop there.

Cheers!

"I had the right to remain silent, but I didn't have the ability!"

Ron White, Comedian

visual studio 2010 c# error

User349028-Mar-13 18:05

User3490

28-Mar-13 18:05

i have this error and the solutions that i found don't work.

the error is:
-------------

Error 12 Unable to copy file "obj\x86\Debug\WindowsFormsApplication1.exe" to "bin\Debug\WindowsFormsApplication1.exe". The process cannot access the file 'bin\Debug\WindowsFormsApplication1.exe' because it is being used by another process. WindowsFormsApplication1

Error 11 Could not copy "obj\x86\Debug\WindowsFormsApplication1.exe" to "bin\Debug\WindowsFormsApplication1.exe". Exceeded retry count of

10. Failed. WindowsFormsApplication1

Warning 9 Could not copy "obj\x86\Debug\WindowsFormsApplication1.exe" to "bin\Debug\WindowsFormsApplication1.exe". Beginning retry 9 in 1000ms. The process cannot access the file 'bin\Debug\WindowsFormsApplication1.exe' because it is being used by another process. WindowsFormsApplication1
Warning 8 Could not copy "obj\x86\Debug\WindowsFormsApplication1.exe" to "bin\Debug\WindowsFormsApplication1.exe". Beginning retry 8 in 1000ms. The process cannot access the file 'bin\Debug\WindowsFormsApplication1.exe' because it is being used by another process. WindowsFormsApplication1
Warning 7 Could not copy "obj\x86\Debug\WindowsFormsApplication1.exe" to "bin\Debug\WindowsFormsApplication1.exe". Beginning retry 7 in 1000ms. The process cannot access the file 'bin\Debug\WindowsFormsApplication1.exe' because it is being used by another process. WindowsFormsApplication1
Warning 6 Could not copy "obj\x86\Debug\WindowsFormsApplication1.exe" to "bin\Debug\WindowsFormsApplication1.exe". Beginning retry 6 in 1000ms. The process cannot access the file 'bin\Debug\WindowsFormsApplication1.exe' because it is being used by another process. WindowsFormsApplication1
Warning 5 Could not copy "obj\x86\Debug\WindowsFormsApplication1.exe" to "bin\Debug\WindowsFormsApplication1.exe". Beginning retry 5 in 1000ms. The process cannot access the file 'bin\Debug\WindowsFormsApplication1.exe' because it is being used by another process. WindowsFormsApplication1

...

THE SOLUTION THAT I FIND:
-------------------------

SQL

 add following lines of code to the pre-build event command line of your project.

if exist "$(TargetPath).locked" del "$(TargetPath).locked"
if exist "$(TargetPath)" if not exist "$(TargetPath).locked" move "$(TargetPath)" "$(TargetPath).locked"

SECOND SOLUTION:
--------------

if exist "$(ProjectDir)bin\$(TargetFileName).locked" del "$(ProjectDir)bin\$(TargetFileName).locked"
if exist "$(ProjectDir)bin\$(TargetFileName)" if not exist "$(ProjectDir)bin\$(TargetFileName).locked" move "$(ProjectDir)bin\$(TargetFileName)" "$(ProjectDir)bin\$(TargetFileName).locked"

Can you please help me??

Re: visual studio 2010 c# error

annex4528-Mar-13 21:12

annex45

28-Mar-13 21:12

maybe it is the basic thing to say, but did you make sure the application properly shut down before compiling it?
access the task manager and in it, under processes look for anything associated with your application

also, did you try:

Build>clean solution and then Build>rebuild

Hope this Help
Eyal

Re: visual studio 2010 c# error

User349029-Mar-13 1:30

User3490

29-Mar-13 1:30

Thank you very much!!
Your solution it works !!!

Re: visual studio 2010 c# error

annex4529-Mar-13 1:32

annex45

29-Mar-13 1:32

you are most welcome!

Simulating Mouse Scrolling

annex4528-Mar-13 12:19

annex45

28-Mar-13 12:19

Hello all!

how do I make the computer think the mouse has performed a scroll, thus making him respond and indeed scroll across the screen?

Thanks in advance!

Re: Simulating Mouse Scrolling

Jasmine250128-Mar-13 13:10

Jasmine2501

28-Mar-13 13:10

Put the mouse on the tray of a baby swing, and let it swing.

http://thedailywtf.com/Articles/Fisher_Price_Technology_Integration.aspx[^]

Create MP4 video from images

cabasm28-Mar-13 10:35

cabasm

28-Mar-13 10:35

Hi fellows,
I have to resolve the following problem: how can I create a MP4 video file from a bunch of images (jpg, gif, tiff or bmp)? Can somebody help me?

Thanks!

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.