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how to avoid a leave event after it is called

eyalle18-Nov-09 19:30

18-Nov-09 19:30

hello,
im looking for a solution with a slight problem that im sure it is possible, but i cant find anything about it on the web.
In my code, im calling a leave event out of a control that check's if the control has made any changes (txtBox, combo Box...) raising a question telling the user that changes weren't saved.
if the user click's on Cancel button, i want him to stay in the control and not actually leave like he initially did.
How can i do it ?
Thanks

private void TabControlChars_Leave(object sender, EventArgs e)
        {
            DataTable charChanges = null;

            if (charsTypeDT != null)
            {
                charChanges = charsTypeDT.GetChanges();
            }
            else if (charsDT != null)
            {
                charChanges = charsDT.GetChanges();
            }

            if (charChanges != null)
            {
                DialogResult result;
                result = MessageBox.Show("Changes were made without saving !!\n"
                               + "All Changes will be lost ...", "Warning", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning);
                if (result == DialogResult.Cancel)
                {
                    ???
                }
            }
        }

Re: how to avoid a leave event after it is called

dan!sh 18-Nov-09 19:48

dan!sh

18-Nov-09 19:48

Try setting focus back to the textbox.

You can also place the code in the Validating event and then use Cancel property of the CancelEventArgs there to remain in the textbox.

50-50-90 rule: Anytime I have a 50-50 chance of getting something right, there's a 90% probability I'll get it wrong...!!

Re: how to avoid a leave event after it is called

Shameel18-Nov-09 21:29

Shameel

18-Nov-09 21:29

Your logic should ideally be placed in Cancel button's Click event.

Re: how to avoid a leave event after it is called

eyalle18-Nov-09 21:32

eyalle

18-Nov-09 21:32

Sorry, but i didnt get you..
the message Box is created inside the Leave event so how can i put the event in the cancel button click event ?

Re: how to avoid a leave event after it is called

Shameel18-Nov-09 22:51

Shameel

18-Nov-09 22:51

I'm sorry, I got your question wrong.

In your case, instead of using the Leave event, use the Validating event and if the user chooses cancel, set e.Cancel = true (e is the ValidatingEventArgs passed to the method).

grid to database

Member 59031018-Nov-09 19:20

Member 590310

18-Nov-09 19:20

i have some data in grid which i want to write to database table on clicking a comand button...tell me esay way to do that?

Re: grid to database

Abhijit Jana18-Nov-09 19:27

Abhijit Jana

18-Nov-09 19:27

Member 590310 wrote:
i have some data in grid which i want to write to database table on clicking a comand button...tell me esay way to do that

What is the source of data that you are showing in gridview ? Read those data and put into the database. Or your problem is something else ?

Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
Don't forget to click "Good Answer" on the post(s) that helped you.

Re: grid to database

Member 59031018-Nov-09 19:33

Member 590310

18-Nov-09 19:33

reading data from table and showing it in grid...nw after making some changes in data i want to put that data back to table...

Re: grid to database

Amit Patel198518-Nov-09 20:08

Amit Patel1985

18-Nov-09 20:08

read the data from the grid

by using this code

gridname.row[index].cell[i].text

and make a query and insert into the table.

Thanks and regads,

Amit Patel

Re: grid to database

Member 59031018-Nov-09 20:12

Member 590310

18-Nov-09 20:12

thanx...

How to add new line in cell gridview in desktop application

Rajesh_K_Sharma18-Nov-09 19:05

Rajesh_K_Sharma

18-Nov-09 19:05

Hi,
I have gridview which contains Column type DataGridViewButtonColumn. I want to set caption of button in two line like
Save
Close.

I have tried to set caption using "Save\nClose" ,"Save\r\nClose" and "Save\f\nClose", but not worked .Please tell me how to set caption using new line?

Regards,
rajesh

rajesh

Re: How to add new line in cell gridview in desktop application

Abhijit Jana18-Nov-09 19:25

Abhijit Jana

18-Nov-09 19:25

Rajesh_K_Sharma wrote:
Subject: How to add new line in cell gridview in desktop application

~~Then why are you asking in ASP.NET Forum ?~~
Sorry My BAD. I thought I am on ASP.NET Forum. Sorry Again !!!

Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
Don't forget to click "Good Answer" on the post(s) that helped you.

Reducing avi file size

kjsl2k918-Nov-09 14:39

kjsl2k9

18-Nov-09 14:39

Hi,

I am new to how to recording video using DirectX in windows application.How can the size of avi be reduced while recording video using DirectShow Library.

Thanks

Re: Reducing avi file size

Eduard Keilholz18-Nov-09 22:06

Eduard Keilholz

18-Nov-09 22:06

What size, the video size (dimensions) or the filesize?

.: I love it when a plan comes together :.
http://www.zonderpunt.nl

Re: Reducing avi file size

kjsl2k919-Nov-09 0:37

kjsl2k9

19-Nov-09 0:37

Hi,

By Size I mean the size of the File like recording 1 minute video produces AVI file of 1GB .I want to compress the File Size.

Thanks

Any Software tool available for generating UML ACTIVITY DIAGRAM from C# Code ?

Nadia Monalisa18-Nov-09 14:07

Nadia Monalisa

18-Nov-09 14:07

Hello,
I am looking for a software that can generate Activity diagram from an existing C# source code. I found many solution which can only do round trip engineering with Class Diagram. But I need an Activity Diagram generator. Would anyone please tell me if there is one ?

Regards

Re: Any Software tool available for generating UML ACTIVITY DIAGRAM from C# Code ?

Abhijit Jana18-Nov-09 16:36

Abhijit Jana

18-Nov-09 16:36

Have you checked with EA ?

Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
Don't forget to click "Good Answer" on the post(s) that helped you.

Re: Any Software tool available for generating UML ACTIVITY DIAGRAM from C# Code ?

RC nathan19-Nov-09 20:53

RC nathan

19-Nov-09 20:53

Rational rose is a software used to generate the UML activity Diagram based on your coding sturcture

asynchronous write file problem

hande5418-Nov-09 11:45

hande54

18-Nov-09 11:45

I tried to write a file asynchronously but I can not do it. Could you help me on this issue ?
any recommendations are strongly appreciated Smile | :)

Re: asynchronous write file problem

Bassam Saoud18-Nov-09 12:30

Bassam Saoud

18-Nov-09 12:30

What is the error you are getting?

Re: asynchronous write file problem

Dave Kreskowiak18-Nov-09 17:27

Dave Kreskowiak

18-Nov-09 17:27

Not without seeing your code and getting an explanation of the problem you're having.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008
But no longer in 2009...

Re: asynchronous write file problem

hande5419-Nov-09 6:38

hande54

19-Nov-09 6:38

sorry for unclear explanation of my problem.
the code that I have try is below:

delegateGetInputReportData getInputReportDelegate = null;
getInputReportDelegate = new delegateGetInputReportData(myAccessForm);
base.Invoke(getInputReportDelegate,/*args*/value);

a new delegate method is created on each data receive event.

in myccessForm I try

TextWriter tx = new StreamWriter("Data.txt");
tx.WriteLine(index +" " + s1.ToString() + "0" + s2.ToString() + "\t\t" + str + "\t\t" + p.ToString());

but it causes an exception that file is used by another program I tried to solve problem by using mutex but It does not work.

Hide Black Console Window later in program

LimitedAtonement18-Nov-09 7:33

LimitedAtonement

18-Nov-09 7:33

Dear Sirs,

I searched online and the forums and can't find the answer to my question. I would like my program to hide its console window in a managed way, but only AFTER allowing the program to output there. Basically, it goes like this:

public .ctor()
{
    _Init();
    _Open_SS();
    System.Console.Hide();/*believe it or not, this doesn't work!*/
}

So, if anyone knows how to do this in a MANAGED-ONLY context (I don't want to use DllImport("Kernel32.dll")]extern int FreeConsole();). Thanks in advance for your help!!

In Christ,
Aaron Laws

http://ProCure.com

Re: Hide Black Console Window later in program

The Man from U.N.C.L.E.18-Nov-09 7:57

The Man from U.N.C.L.E.

18-Nov-09 7:57

I know you said Managed code, however I don't see any way of avoiding it as the console is an unmanaged host for the application output. However I would recommend

[DllImport("user32.dll")]static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);

rather than FreeConsole as you don't really want to detach the process from the console, just hide the console. Well, having said that, maybe you do, but I wouldn't.

If you have knowledge, let others light their candles at it.
Margaret Fuller (1810 - 1850)
www.JacksonSoft.co.uk

Re: Hide Black Console Window later in program

PIEBALDconsult18-Nov-09 9:23

PIEBALDconsult

18-Nov-09 9:23

I use FreeConsole for applications than can be run in either console or GUI mode.

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