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If you have a problem or question with an aritcle, post it in the forum at the bottom of that article.
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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
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Are you clearing the selection set on the click of your button?
Use the best guess
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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?
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Since we have no idea what your Next button does, it is impossible to say what is happening.
Use the best guess
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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
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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
Thanks
Rakesh
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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
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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
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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..
Thanks
Rakesh
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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.
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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 |
Thanks
Rakesh
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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
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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
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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
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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:
-------------------------
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??
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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
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Thank you very much!!
Your solution it works !!!
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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!
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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!
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It's called a "slideshow".
There are many products out there (freeware and for $10+) that will take "pictures" and make a "movie".
If you're not particular about the final format, you can even use "Windows MovieMaker" (and use a MP4 converter after-the-fact if necessary).
Odds are, you may alread have other "movie maker" software on your PC if you use HP or Canon products.
Just Google: slideshow mp4
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I don't want to buy one or to get one. I want to develop one.
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