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Haven't tried it myself, but these might help:
Complete Guide on How To Turn A Monitor On/Off/Standby[^]
Multi-monitor programming in C#[^]
If nothing else works, there is always the simple solution: have a neutral background to your desktop (an image of the presentation name, and your contact details perhaps) and then show a form on the second monitor (maximized) when you want the projector to display. Minimize it when you don't.
The universe is composed of electrons, neutrons, protons and......morons. (ThePhantomUpvoter)
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Hi can you please help me a number slider puzzle solver code is developed with c # is a 3 * 3 and 4 * 4 with 4 types of algorithms that can be compared with each other (in the discussion of artificial intelligence). Thank you, Jebreil644
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You have chosen quite a question to pose here. Looking at Neural NEtworrks might be one solution, other might be looking at simular articles posted here on the codeproject site.
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So, what's the actual question?
By the way, sliding puzzles are conventionally solved with A*[^], with various different heuristics, such as "sum of manhattan distances".
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Hi
I want to simulate Windows Explorer by C# and I write the code,and now I want to add Back and Forward button,the project see the path but I do not know how to go Back or Forward?
thanks for your help
Baharan20
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Thanks
I have seen this code Before
But I don't Understand the code
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baharan20 wrote: I want to simulate Windows Explorer by C# and I write the code,and now I want to add Back and Forward button,the project see the path but I do not know how to go Back or Forward?
Your application will have a "current directory" that it's showing?
Add it to a List every time it changes. Implement the "Back" button by fetching the path from that list and displaying that. That concept should make implementing the "Forward" button easy 
Bastard Programmer from Hell 
If you can't read my code, try converting it here[^]
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Hi everybody!
I'm learning about FEC for WSN. If you have OSPF code or FEC code (ex: RS code, CRC,...)in WSN, you can send to me . Thanks!
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Wow, so many acronyms, all saying the same thing. Can you please do my work for me?
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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
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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
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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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