Re: Control Box Close Button Event - C# Discussion Boards

Martin#23-Jul-07 2:41

23-Jul-07 2:41

Hello Luc,

Luc Pattyn wrote:
I dont think it will work your way

Luc Pattyn wrote:
Windows already sets DialogResult to Cancel on
hitting the Close box.

Have you tested it?
I did, with VS2003 .Net1.1!

Luc Pattyn wrote:
And, we have had a difference of opinion on this before: one should not go against
such conventions.

Really?
Help me with long-term memory, when was that.

All the best,

Martin

Luc Pattyn23-Jul-07 3:07

23-Jul-07 3:07

Martin# wrote:
Have you tested it?

Yes.

Martin# wrote:
Help me with long-term memory, when was that

IIRC it was about changing the behavior of a group of radio buttons; my point was and is
if it looks like standard controls, it should behave like them too.

Smile | :)

Luc Pattyn

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Martin#23-Jul-07 3:09

23-Jul-07 3:09

Luc Pattyn wrote:
Yes.

So why do we have different results than?

Luc Pattyn wrote:
IIRC it was about changing the behavior of a group of radio buttons;

Ahh, now I remember!

Luc Pattyn wrote:
my point was and is
if it looks like standard controls, it should behave like them too.

That's also what I think, but I think the point was to modify the behavior in combination with the style.

All the best,

Martin

Luc Pattyn23-Jul-07 3:30

23-Jul-07 3:30

Martin# wrote:
So why do we have different results than?

I see three possibilities:
- we have different systems
- there is a misunderstanding somewhere
- one of us is wrong (but who then?)

The last post from the OP seems to hint towards the third possibility, doesnt it ?
Smile | :)

Luc Pattyn

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Martin#23-Jul-07 3:43

23-Jul-07 3:43

Luc Pattyn wrote:
we have different systems

XP; VS2003; .Net1.1

Luc Pattyn wrote:
there is a misunderstanding somewhere

If I test following code at my Form, it does what I wrote in the comments of the code:

private void CancelButton_Click(object sender, System.EventArgs e)
{
    this.DialogResult = DialogResult.Cancel;
    this.Close();
}

protected override void OnClosing(CancelEventArgs e)
{
    if(this.DialogResult == DialogResult.None)
    {
        //'X' was pressed
    }
    else if(this.DialogResult == DialogResult.Cancel)
    {
        //CancelButton was Pressed
    }

    base.OnClosing (e);
}

Luc Pattyn wrote:
one of us is wrong (but who then?)

It's maybe a lack of self confidence, but I would assume it's me who missed something!

Luc Pattyn wrote:
The last post from the OP seems to hint towards the third possibility, doesnt it ?

I haven't understood this one!

Smile | :)

All the best,

Martin

Luc Pattyn23-Jul-07 4:02

23-Jul-07 4:02

Hi Martin,

the OP posted: "everytime getting DialogResult as Cancel if i click on X button also"
hence he gets DialogResult.Cancel both for the Cancel button and for the Close Box,
so that does not help him.

Maybe/probably the "Close Box implies Cancel result" only applies to dialogs (forms shown with
ShowDialog) where it matters most, and not to regular forms, shown with Show() ?
If so, you probably did the wrong experiment...

Smile | :)

Luc Pattyn

try { [Search CP Articles] [Search CP Forums] [Forum Guidelines] [My Articles] }
catch { [Google] }

Martin#23-Jul-07 4:13

23-Jul-07 4:13

Luc Pattyn wrote:
Maybe/probably the "Close Box implies Cancel result" only applies to dialogs (forms shown with
ShowDialog) where it matters most, and not to regular forms, shown with Show() ?

Bingo!
Just tested it!

Luc Pattyn wrote:
If so, you probably did the wrong experiment

Did I?
I think he was never speaking of ShowDialog!

But anyway, you found the problem!
Got my '5' for that!

Smile | :)

All the best,

Martin

Luc Pattyn23-Jul-07 4:13

23-Jul-07 4:13

Furthermore, MSDN on Form.DialogResult says:
"clicking the Close button (the button with an X in the top-right corner of the form) causes the form to be hidden and the DialogResult property to be set to DialogResult.Cancel."

It does not say explicitly WHEN it does that, so I guess it is in base.OnClosing (e);

It does say "You can override the value assigned to the DialogResult property when the user clicks the Close button by setting the DialogResult property in an event handler for the Closing event of the form"

So I guess the base.OnClosing() does something like
if (DialogResult==None) DialogResult=Cancel

and hence your tip does not work, whereas setting it to something else
such as DialogResult=Yes; would work

(but it would then violate the GUI conventions, as I keep telling you).

Smile | :)

Luc Pattyn

try { [Search CP Articles] [Search CP Forums] [Forum Guidelines] [My Articles] }
catch { [Google] }

Martin#23-Jul-07 4:20

23-Jul-07 4:20

Luc Pattyn wrote:
and hence your tip does not work, whereas setting it to something else
such as DialogResult=Yes; would work

(but it would then violate the GUI conventions, as I keep telling you).

As it is only the case with ShowDialog and not with Show() and I tested it with show, I think it's not my fault.
I wouldn't have given such a suggestion if I knew that fact!

All the best,

Martin

Luc Pattyn23-Jul-07 4:41

23-Jul-07 4:41

And that's how we keep learning things every day.

"I think it's not my fault" Right, we all have a partial view on the whole thing,
every statement needs a lot of ifs and whens.

And the next question probably will be: when I hit the escape key, I want my form/dialog to
close, and I want to discriminate all three (ESC/CancelButton/CloseBox) ??? Big Grin | :-D

Luc Pattyn

try { [Search CP Articles] [Search CP Forums] [Forum Guidelines] [My Articles] }
catch { [Google] }

Martin#23-Jul-07 4:45

23-Jul-07 4:45

But only on Mondays!

Wait I think there is such a system allready on the market. YEP: "SAP" Laugh | :laugh:

All the best,

Martin

Luc Pattyn23-Jul-07 4:59

Re: dropdown list problem

23-Jul-07 4:59

Indeed, they are the experts as to f*cking up a GUI.
Think thats part of their business model. Cry | :((

Luc Pattyn

try { [Search CP Articles] [Search CP Forums] [Forum Guidelines] [My Articles] }
catch { [Google] }

File Download

AB777122-Jul-07 20:33

AB7771

22-Jul-07 20:33

Hi all,
I have created a Page on which i want the user to be able to download files,
I want to display the name of the files and when the user clicks on the file name the save File dialog should be displayed so that the user can select the location of the file where it has to be saved.

Any sample code or links regarding this will be appreciated.

Thanks & Regards,
Pramod
"Everyone is a genius at least once a year"

Re: File Download

Christian Graus22-Jul-07 20:54

Christian Graus

22-Jul-07 20:54

The anchor tag will do this for you, depending. Where do the files live ? Are they on the server, or in the database ?

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Re: File Download

AB777122-Jul-07 20:59

AB7771

22-Jul-07 20:59

They are on a Sharepoint Server.
I get all the attachments from a list and display the names on the page by creating LinkButton for each of them.
now i want the display the save dialog box when the user clicks on the LinkButton and then the file should be saved on the location given by the user.

Thanks & Regards,
Pramod
"Everyone is a genius at least once a year"

glossary

vimala soujanya22-Jul-07 20:29

vimala soujanya

22-Jul-07 20:29

how to build a glossary in c#.....with person names as hyperlinks.when hyperlink is clicked information regarding that person shoud be displayed.please help me ..its urgent.

Re: glossary

Christian Graus22-Jul-07 20:52

Christian Graus

22-Jul-07 20:52

It's ALWAYS urgent

Most likely, you'd have the data in your database, and you'd link back to a page that shows the details that takes the Id of hte person on the query string, so you can load it from the database.

Are you doing this for school, or for your job ?

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

dropdown list problem

srinivassam22-Jul-07 20:26

srinivassam

22-Jul-07 20:26

hi, my problem is in .aspx page i have 2 dropdown list buttons one is for to select status and one is for to select for usertype.
What i want is in designing phase if i select status as 1 then in second dropdownlist displays only related item how to do this one, any one give me one idea.
for example if i select like below in second dropdownlist displays related item
<pre>
DropDownList1.SelectedItem .Text="1"
</pre>

srinivas

Christian Graus22-Jul-07 20:37

Christian Graus

22-Jul-07 20:37

1 - give your variables real names
2 - handle the selected index changed event on the first list, and when it fires, populate the second list accordingly

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

How to disable right click menu/ context menu of datagrid

Software_Guy_12322-Jul-07 20:03

Software_Guy_123

22-Jul-07 20:03

Hello,

In windows application we are using datagrid in readonly mode. If user right clicks on particular cell then copy/ paste menu is displaying. User is copying content and trying to paste in other cell, as datagrid is in readonly mode so user can't paste, but in first cell it is showing edit icon.
We don't want that edit icon if datagrid is readonly, so I thought we can disable right click menu only.

If any other solution is available for hiding edit icon, please let me know.

Anybody if knows, solution for this, please give URL or sample code.

Thanks & Regards,
Kumar

Re: How to disable right click menu/ context menu of datagrid

Martin#22-Jul-07 20:16

Re: How to disable right click menu/ context menu of datagrid

22-Jul-07 20:16

Hello

You can disable the contextmenu if you path an empty menu to the property of the control:

ContextMenu cm = new ContextMenu();
yourControl.ContextMenu = cm;

Or you modify the existing menu liek you want.

All the best,

Martin

Software_Guy_12322-Jul-07 20:45

Software_Guy_123

22-Jul-07 20:45

Hello Martin,

Thank you for your reply, but it is working for datagrid like column header.
My problem is datagrid populated with few rows and columns, If I select from columns new menu is not displaying, it is displaying default windows right click menu i.e. Undo, Cut, Copy, Paste,Delete and Select All.
I want to disable or hide this menu.

once again thank you for your help.

Thanks & Regards,
Kumar

Re: How to disable right click menu/ context menu of datagrid

Software_Guy_12330-Jul-07 19:54

Software_Guy_123

30-Jul-07 19:54

Hello,

In .Net 2.0 version, windows form, we are using readonly datagrid. for this grid if user selects any cell and right click then windows context menu i.e. cut, copy, paste... is displaying.
Now user is selecting some other cells and try to paste then in rowheader it is dispalying edit icon. We don't want this edit icon should be display at rowheader but context menu should be display.

Your help is greatly appreciated.

Thanks & Regards,
Kumar

Mutlithreading:-Playing Mutiple Video files CPU 100%

leoiser22-Jul-07 19:51

leoiser

22-Jul-07 19:51

Hi,
I am doing an application that is using webservice & displaying data.So every 30 seconds the application will call webservice, I use system.Threading.Timer it is working fine.CPU usage is very less (maximum 30).I got an additional task to play video files.So it will be maximum 8 video in a screen (video files located in local system) & very 30 seconds according to data from ws video file will change.I write the code like this.In timer callback event I am Executing 2 functions

[Code]
System.Threading.ThreadPool.QueueUserWorkItem(new System.Threading.WaitCallback(GetNextPage), state); // going 2 next page, in a page displaying 8 rows
System.Threading.ThreadPool.QueueUserWorkItem(new System.Threading.WaitCallback(GetNextVideo), state); // displaying corresponding video

//in delegate of video I put the below code

wmp = (AxWMPLib.AxWindowsMediaPlayer)Arrctrl[0]; //Find the control bcos adding at runtime
thread = new System.Threading.Thread(new System.Threading.ParameterizedThreadStart(PlayCurrentWMP)); //PlayCurrentWMP is assign the URL & play
thread.Priority = System.Threading.ThreadPriority.Lowest;
thread.IsBackground = true;
thread.Start(wmp);

[/Code]

Please advice what is wrong in my coding. Thanks in advance
Confused | :confused:

Re: Mutlithreading:-Playing Mutiple Video files CPU 100%

Luc Pattyn23-Jul-07 2:25