Re: Disable the system keys (PageUp) in my TreeView - C# Discussion Boards

Binding TreeView Control to an Arraylist

KKrista25-May-07 1:45

25-May-07 1:45

Hi,
I am developing application in which an Arraylist has a list of users. I also have a TreeView to show the users in the list.

Can anyone tell me how to bind the TreeView Control to the Arraylist?

Thanks in advance,
Murali

Re: Binding TreeView Control to an Arraylist

Manoj Kumar Rai25-May-07 2:03

Manoj Kumar Rai

25-May-07 2:03

Murali,

If you want to use a tree view then one way i can suggest is that, you
you populte the tree view like below:

Suppose "tvw" is the tree view.

TreeNode ndRoot = new TreeNode(stringUserName);
tvw.Nodes.Add(ndRoot);

this way you can add all ur users in the tree view.

Manoj

Manoj
Never Gives up

Re: Binding TreeView Control to an Arraylist

KKrista25-May-07 2:18

KKrista

25-May-07 2:18

Hi Manoj,
Thanks for your reply. I am able to add nodes into the tree view without any problem.
However, I want to bind an Arraylist to the TreeView so that the TreeView is controlled whenever the Arraylist is modified (Addition/Deletion of Users).

Is that possible?

Thanks in advance,
Murali

Re: Binding TreeView Control to an Arraylist

zaboboa25-May-07 4:41

zaboboa

25-May-07 4:41

TreeView control does not support databinding.
What you can do, is have an event handler on the ArrayList, and every time you add, or remove an element from the array, you can repopulate the treeview control.
Hope that helps.

Disable the system keys (PageUp) in my TreeView

anderslundsgard25-May-07 1:44

anderslundsgard

25-May-07 1:44

When I press the ‘PageUp’ key and my TreeView has focus I don’t want the selection to be on the top node. How can I override this common behavour?

_____________________________

...and justice for all

APe

Re: Disable the system keys (PageUp) in my TreeView

Muammar©25-May-07 7:58

Muammar©

25-May-07 7:58

private void YourTreeView_KeyDown(object sender, KeyEventArgs e)
{
if(!(e.KeyCode.ToString()=="PageUp"))
{...}
}

Smile: A curve that can set a lot of things straight!
(\ /)
(O.o)
(><)

Re: Disable the system keys (PageUp) in my TreeView

Martin#25-May-07 8:32

Martin#

25-May-07 8:32

Hello Muammar,

Your answer works, but I think it's more save (Fat finger sundrom: "PoagUip" or something like that) to use they System.Windows.Forms.Keys enumeration for the comparison.
Proplem with the string comparison is, that it compiles fine, but it's not working like expected!

if(e.KeyCode == Keys.PageUp)

Just for info!

All the best,

Martin

Re: Disable the system keys (PageUp) in my TreeView

Martin#25-May-07 8:34

Martin#

25-May-07 8:34

Hello,

Muammars answer works, but I think it's more save (Fat finger sundrom: "PoagUip" or something like that) to use they System.Windows.Forms.Keys enumeration for the comparison.
Proplem with the string comparison is, that it compiles fine, but it's not working like expected!

if(e.KeyCode == Keys.PageUp)

All the best,

Martin

Adding a new Cursor file

Gareth H25-May-07 0:58

Gareth H

25-May-07 0:58

Hi,

I've created a new cursor that i want to use in my code and added it to the Resources file. How can i create a new Cursor object but without specifying the full path, since the Cursor constructors wants the path of the .cur file.

Anyone got any ideas?

Regards,
Gareth.

Re: Adding a new Cursor file

JoeSharp25-May-07 1:57

JoeSharp

25-May-07 1:57

hi
try this

Cursor cursor = new Cursor(this.GetType(), "mycursor.cur");

regards

Control + Enter

Rahul.RK24-May-07 23:49

Rahul.RK

24-May-07 23:49

Hello,

i want to do perticular action when user press control + enter key combination.

now ican only find only control or enter key press.

How to check the control + enter key combination.

Thanks in advance.

Rahul Kulkarni

Re: Control + Enter

Martin#24-May-07 23:56

Martin#

24-May-07 23:56

Hello,

If you Handle the KeyDown for example.
You can do this:
(e.Control && (e.KeyCode == Keys.Enter))

All the best,

Martin

Re: Control + Enter

Rahul.RK25-May-07 0:34

Rahul.RK

25-May-07 0:34

Thanks....

automation

s_khan_87624-May-07 23:29

s_khan_876

24-May-07 23:29

try
{

HTMLInputElement ieButton = (HTMLInputElement)myDoc.all.item(ButtonName, 0);
ieButton.click();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
i m doing internet explorer automation.

i do the automation of click event of buttons ,i need same for images ,can any one help me out?

Re: automation

blackjack215024-May-07 23:52

blackjack2150

24-May-07 23:52

Take the image as a HTMLElement object and use the InvokeMember method, providing the name of the function as a parameter.
I don't know for sure if it'll work, but it's worth a try.

Good luck!

Re: automation

s_khan_87627-May-07 3:08

s_khan_876

27-May-07 3:08

can u plz provide me with the chunk of code for images??

Re: automation

blackjack215027-May-07 21:07

blackjack2150

27-May-07 21:07

Check out this thread.

http://www.codeproject.com/script/comments/forums.asp?msg=2045657&forumid=1649&mode=all&userid=3539989#xx2045657xx[^]

It's not exactly what you're looking for(image clicks), but I think you can make an idea about what you need to do.

I think that for the image clicks, you'll have to load the page to HtmlDocument object and use it's InvokeScript method. The parameter will be the name of the script function which is called when the user clicks the image.

Error handling in debug/run mode. Weird stuff.

blackjack215024-May-07 23:16

blackjack2150

24-May-07 23:16

The main method of a Windows Application:

static void Main(string[] args)<br />
        {<br />
            Application.EnableVisualStyles();<br />
            Application.SetCompatibleTextRenderingDefault(false);<br />
<br />
            try<br />
            {               <br />
                    Application.Run(new MainForm());               <br />
            }<br />
            catch (Exception ex)<br />
            {                <br />
                    MessageBox.Show("Caught exception in Main method.")<br />
            }<br />
        }

I've put the Run method inside a try-catch block.

When an exception is caught inside a method that belongs to the MainForm class, I throw that exception, expecting to see the MessageBox called from the Main method.

Things happen as expected when I run the program in debug mode form VS.

However, if I run the exe file directly from the Debug folder of my project, the program behaves differently, in the sense that the message box does not pop up anymore, and instead the much-hated "Unhandled exception has occured in your application." window shows.

The same happens if I generate a beep on the PC speaker(System.Console.Beep()) instead of showing the message box.

I really don't understand. Why is the exception caught only in Debug mode??

Thanks.

Re: Error handling in debug/run mode. Weird stuff.

MicealG24-May-07 23:26

MicealG

24-May-07 23:26

Did you check Wikipedia?

Freedom is the right to say that 2+2=5 if this is so everything else will follow.

Re: Error handling in debug/run mode. Weird stuff.

Sandeep Akhare25-May-07 1:52

Sandeep Akhare

25-May-07 1:52

MicealG wrote:
Did you check Wikipedia?

Dude don't take things personally Smile | :)

I think his intension was only for fun/kidding perpose

Thanks and Regards
Sandeep

If If you look at what you do not have in life, you don't have anything,
If you look at what you have in life, you have everything... "

Re: Error handling in debug/run mode. Weird stuff.

mav.northwind26-May-07 23:16

mav.northwind

26-May-07 23:16

Hi!
Although I don't understand why this behaviour is like it is in every detail, I think I can tell you how to get consistent behaviour in every case:

Add

Application.ThreadException += new System.Threading.ThreadExceptionEventHandler(Application_ThreadException);

before calling Application.Run(... and the corresponding event handler like this:

static void Application_ThreadException(object sender, System.Threading.ThreadExceptionEventArgs e)
{
    throw e.Exception;
}

Now every exception will be caught by your "top level" try/catch.

Regards,
mav

--
Black holes are the places where God divided by 0...

Re: Error handling in debug/run mode. Weird stuff.

blackjack215027-May-07 23:31

blackjack2150

27-May-07 23:31

Thanks. It does the trick, even though it's a little unorthodox.

PS: I like you signature. Wink | ;)

reporting services

kalyan_241624-May-07 23:08

kalyan_2416

24-May-07 23:08

hi all
while using reports...
in a table sum of one column will appear when there are values in the columns

when there are no values in the column #Error appears...
i wanna remove that #error and display some thing else

i am using aggregate function SUM in the footer...
thanks bye

Unknown Dot Net Error

MicealG24-May-07 23:05

MicealG

24-May-07 23:05

Hey folks,

If someone could shed some light on this error message it would be great.
Error Message

Freedom is the right to say that 2+2=5 if this is so everything else will follow.

Re: Unknown Dot Net Error

Muammar©

24-May-07 23:13

No unhandled exception??

Smile: A curve that can set a lot of things straight!
(\ /)
(O.o)
(><)

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