How to prevent to changing row in DataGridView when user is edit Mode ? - C# Discussion Boards

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Re: Can I find out how many dataset are in a project?

Christian Graus1-Jun-08 15:54

Christian Graus

1-Jun-08 15:54

You'd need to keep that count for yourself.

Christian Graus

Please read this if you don't understand the answer I've given you

"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )

Re: Can I find out how many dataset are in a project?

belzer2-Jun-08 4:21

belzer

2-Jun-08 4:21

Thanks for your reply,

i need to write a foreach loop for datasets, how can i write it?

foreach dataset in what?

Thanks again

Can we declare method with optional parameters ?

Mohammad Dayyan1-Jun-08 9:43

Mohammad Dayyan

1-Jun-08 9:43

Hi there.

I want declare method with optional parameters.
For example I want declare this method :

private void tree (string optional_parameter)
{
...
}

that I could call it like this :

tree();

Id est , I can omit optional_parameter.
Can we do it in C# ?

Sorry for my English. I'm a freshman .

Re: Can we declare method with optional parameters ?

Giorgi Dalakishvili1-Jun-08 9:53

Giorgi Dalakishvili

1-Jun-08 9:53

Here you go: Handling optional parameters in C#[^]

Giorgi Dalakishvili

#region signature
my articles
#endregion

Re: Can we declare method with optional parameters ?

Scott Dorman1-Jun-08 17:05

Scott Dorman

1-Jun-08 17:05

C# doesn't support optional parameters. You achieve this concept by using method overloading.

Scott.

—In just two days, tomorrow will be yesterday.
—Hey, hey, hey. Don't be mean. We don't have to be mean because, remember, no matter where you go, there you are. - Buckaroo Banzai

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Re: Can we declare method with optional parameters ?

Jaime Olivares1-Jun-08 19:21

Jaime Olivares

1-Jun-08 19:21

Just do as:

private void tree(params string[] optional_parameter)
{
    if (optional_parameter.Length > 1)
       throw new Exception("tree(): Invalid parameter count");
    else if (optional_parameter.Length == 1)
    {
           // do something with optional_parameter[0]
    }
    // regular code
}

Best regards,
Jaime.

Re: Can we declare method with optional parameters ?

Mohammad Dayyan1-Jun-08 22:26

Mohammad Dayyan

1-Jun-08 22:26

Thanks , your answer was helpful .

Sorry for my English. I'm a freshman .

How to prevent to changing row in DataGridView when user is edit Mode ?

hdv2121-Jun-08 7:46

hdv212

1-Jun-08 7:46

hi i have a dataGridView and some textBox for each field, i want when i user double click on dataGridView, my controls bind to datasource that my dataGridView bound to, hitherto, it worked correctly and all row information display in appropirate textBox, this is edit mode, i want in this state, user can't change row until click ok or cancel info, but how to prevent row changing in datagridView ?
thanks

ftp treeview

jammmie9991-Jun-08 1:27

jammmie999

1-Jun-08 1:27

How do i dispaly the files and folders of a site in a tree view or simular format to windows explorer

Thanks

Re: ftp treeview

Christian Graus1-Jun-08 4:00

Christian Graus

1-Jun-08 4:00

With a tree view control.

Check Box in grid view

venkat86_ece31-May-08 23:54

venkat86_ece

31-May-08 23:54

Hi,

In grid view Control,How can i represent a check box which is embed in the grid view.

Re: Check Box in grid view

Christian Graus1-Jun-08 4:01

Christian Graus

1-Jun-08 4:01

I am close to certain there's a code project article on how to do this.

CP Ignore

leckey1-Jun-08 10:14

leckey

1-Jun-08 10:14

Cross-post

Shhhhh.....
http://craptasticnation.blogspot.com/[^]

Windows service status checking

George_George31-May-08 22:09

George_George

31-May-08 22:09

Hello everyone,

I am using the following code segment to check the status of a specific Windows service. My question is, if the service name does not exists, when we tries to get the Status property of the Windows service, there is InvalidOperationException. What is the elegant way to solve this issue (I have not found an API to check whether a service exists, and if I can check whether a service exists, I can check the Status property only for the service which exists)?

    ServiceController controller = new ServiceController("not existing service");
    try
    {
        if (controller.Status == ServiceControllerStatus.Running)
        {
            // do something
        }
    }
    catch (InvalidOperationException ex)
    {
        // come here when service name does not exist
    }
}

thanks in advance,
George

Re: Windows service status checking

Zoltan Balazs31-May-08 23:03

Zoltan Balazs

31-May-08 23:03

You could use the ServiceController.GetServices() method to enumerate through all services and check if there is a service with a name that you're interested in. Or you could use WMI.

Re: Windows service status checking

George_George31-May-08 23:23

George_George

31-May-08 23:23

Thanks Zoltan!

Your solution works!

regards,
George

console mode and service mode

George_George31-May-08 21:43

George_George

31-May-08 21:43

Hello everyone,

My application can be started as both console mode from main function and servide mode from OnStart.

My question is, is there any elegant way to detect whether the application is run under console mode or servide mode? Currently, I set a status in main function manually to detect whether it is run under console mode or service mode.

Any more elegent solution or built-in API I could use?

thanks in advance,
George

Re: console mode and service mode

PIEBALDconsult1-Jun-08 5:14

PIEBALDconsult

1-Jun-08 5:14

I use:

if ( System.Environment.UserInteractive )
{
    // Console stuff
}
else
{
    // Run the service(s)
}

Re: console mode and service mode

George_George1-Jun-08 14:36

George_George

1-Jun-08 14:36

Thanks PIEBALDconsult,

Great! I have tested that in console mode, the value is true and in Windows servide mode, the value is false.

Looks like even if my application does not have an user interface, like Windows Form, and my application is a pure console application, the property value is still true.

So the user interactive does not mean GUI?

regards,
George

MouseEventArgs and Screen Position

Expert Coming31-May-08 19:39

Expert Coming

31-May-08 19:39

I have a form with a DataGridView on it. I have an event handler for the MouseUp event. I am trying to make a context menu popup on a right mouse click only, and appear right under the mouse.

Here is what I have so far:

private void PlayList_CellClick(object sender, MouseEventArgs e)
    {
        if(e.Button == MouseButtons.Right)
        {
            Point loc = this.PointToScreen(new Point(e.X, e.Y));

            int index = PlayList.HitTest(e.X, e.Y).RowIndex;

            PlayListMenu.Show(loc.X, loc.Y);
        }
    }

It almost works, the context menu just doesn't popup in the right place. Any ideas?

The best way to accelerate a Macintosh is at 9.8m/sec² - Marcus Dolengo

Re: Better Way

Expert Coming31-May-08 20:17

Expert Coming

31-May-08 20:17

I got it to work like this:

private void PlayList_CellClick(object sender, DataGridViewCellMouseEventArgs e)
    {
        if(e.Button == MouseButtons.Right)
        {
            Point loc = new Point(e.X, e.Y + PlayList.ColumnHeadersHeight + (PlayList.Rows[0].Height * e.RowIndex));

            PlayListMenu.Show(PlayList, loc);
        }
    }

Is there a better way? Know of the right way?

The best way to accelerate a Macintosh is at 9.8m/sec² - Marcus Dolengo

Re: MouseEventArgs and Screen Position

Shree31-May-08 23:13

Shree

31-May-08 23:13

You have achieved what you wanted to do for now. The function Control.PointToScreen() and the corresponding counterpart will be helpful at other times.

VSTO Excel Help

sharp_k31-May-08 15:38

sharp_k

31-May-08 15:38

I have created my own ribbon in Excel and placed a button inside it. How can i invoke say another tab (home tab) using my button? In C++, we are supposed to get the handle of the application first and then call its methods. I do not know how to do it in C# code. Any help will be appreciated.

Re: VSTO Excel Help

jammmie9991-Jun-08 1:41

jammmie999

1-Jun-08 1:41

post the message in the c++ board

Re: VSTO Excel Help

sharp_k1-Jun-08 7:24

sharp_k

1-Jun-08 7:24

I am using C# 2008.

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