C# Discussion Boards - CodeProject

Re: How To Get Activate Event And Fire some Code

Expert Coming3-Jun-07 21:10

Expert Coming

3-Jun-07 21:10

Use the forms OnClose event to call the updating code for the datagrid.

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

Re: How To Get Activate Event And Fire some Code

Pankaj - Joshi3-Jun-07 22:43

Pankaj - Joshi

3-Jun-07 22:43

sir ,
how i can call the winform1's fillgrid method from the winform2...?
i have to make it public..?
and also make an object of winform1 for accessing its method...?

hi
i am pankaj

Re: How To Get Activate Event And Fire some Code

Pankaj - Joshi3-Jun-07 22:56

Pankaj - Joshi

3-Jun-07 22:56

Sorry To Say Sir,
I Can't Find the OnClose Event of Form in C#.net 2005...?

Regards
Pankaj Joshi

Re: How To Get Activate Event And Fire some Code

blakey4044-Jun-07 1:11

blakey404

4-Jun-07 1:11

i would definately take a different approach.

in Winfrm2 create an event. called something like "DataSaved". you'll need to do this...

public delegate void DataSavedEventHandler(object sender, System.EventArgs e);<br />
public event DataSavedEventHandler DataSaved;

when you create an instance of Winfrm2 from within Winfrm1, you need to subscribe to the event with "+="...

Winfrm2.DataSaved += new DataSavedEventHandler(Winfrm2_DataSaved);<br />
private void Winfrm2_DataSaved(object sender, System.EventArgs e)<br />
{<br />
 //code to update screen...<br />
}

you then trigger the event whenever you add something in Winfrm2, by using something like...

if (this.DataSaved != null) this.DataSaved(this, new EventArgs());

Re: How To Get Activate Event And Fire some Code

Hesham Yassin4-Jun-07 23:01

Hesham Yassin

4-Jun-07 23:01

What u need is using asynchronous invokes:
the problem u have is because of the GUI background multitasking:

the solution:

if(Button1.InvokeRequired == true)
{
Button1.Invoke(method1);
}

private void method1()
{
Thread Call to Method2
}

private void Method2()
{
// Here You need to show the form;P

}

Hesham

Re: How To Get Activate Event And Fire some Code

Pankaj - Joshi6-Jun-07 20:40

Pankaj - Joshi

6-Jun-07 20:40

Hey Hey hey,

I Got The Simplest Code

one winfrm1's button click event i write this

1. winfrm2.showdialogue();
2. filllist();

From very first line the C# moves its all control to the winfrm2 and whenever we exit from that showdialogue from the controlls back to the filllist(); and data refreshed
Smile | :)

Regards
Pankaj Joshi

How to communicate between two Dot Net application

devesh_code3-Jun-07 20:24

devesh_code

3-Jun-07 20:24

Hello

I want to know that how to communicate between two same dot net application running on two different systems. This application is not a client - server application.

And also tell me, how would i know that application is running on another system or not ???

Thanks

Devesh Mishra

Re: How to communicate between two Dot Net application

KKrista3-Jun-07 20:42

KKrista

3-Jun-07 20:42

Hi Devesh,
One of the easiest way is to use a common file between the applications.
The other way would be to use the config file and have some keys specific to each process.

To know if ur application is running, u can search for ur application name in the Processes list of the machine where u have to search at.

Regards,
Murali

Re: How to communicate between two Dot Net application

devesh_code3-Jun-07 20:57

devesh_code

3-Jun-07 20:57

Hi Murali

Thanks for ur reply.
Would you tell me please, how to use config file between the applications and keys specific to each proces.

Thanks

Devesh Mishra

Re: How to communicate between two Dot Net application

KKrista3-Jun-07 21:03

KKrista

3-Jun-07 21:03

While developing ur application, in the app.config file, create a key (say 'instancenumber').

Then at runtime, set the key to a value (say '1','2',etc.) based on the instance of the application running.

This will enable you to associate information specific to each instance.

Regards,
Murali

Re: How to communicate between two Dot Net application

Ilya Verbitskiy3-Jun-07 23:03

Ilya Verbitskiy

3-Jun-07 23:03

Hello,

Why don’t you want to use .Net Remoting. I think that this solution will be easy. Or you can use Global Shared Memory, but if you choose this solution, you’ll work with P/Invoke (DllImport).

Re: How to communicate between two Dot Net application

Hesham Yassin6-Jun-07 8:26

Hesham Yassin

6-Jun-07 8:26

you need to use a kind of connection to send or get protocols or packages.
i give u some tips to learn about that:

Search for the classes of the library System.NetWork

Upgrading an application using Installer without uninstalling

Praveen Raghuvanshi3-Jun-07 19:59

Praveen Raghuvanshi

3-Jun-07 19:59

Hi all,

I have created a windows installer for my application using VS2005 setup and deployment project. Everything is OK. Whenever there is a change in my project that is associated with installer project, I need to remove my service/ application first then it allows to install.

My question is how can i provide an option to install my application if any new version is available without uninstalling it. Currently, i am doing by manually copying the exe to the insalle path.

Thanks in advance.

Praveen Raghuvanshi
Software Engineer,
Wins Infotek Pvt. LTd.
India.

How to deal with reference variable in C#?

Ron.S3-Jun-07 19:55

Ron.S

3-Jun-07 19:55

Hello,

I have created a DLL for COM using VB 6.0. the fucntion has a reference variable which returns some value back.
I am accessing this fuction in C# when i am passing the ref variable it is giving me an error.
Please help.

Thanks in Advance.

Bharath.S Ron

Re: How to deal with reference variable in C#?

Sathesh Sakthivel3-Jun-07 20:20

Sathesh Sakthivel

3-Jun-07 20:20

bharath.s.r wrote:
I am accessing this fuction in C# when i am passing the ref variable it is giving me an error.

What error?

Regards,

Satips. Rose | [Rose]

Re: How to deal with reference variable in C#?

Ron.S3-Jun-07 20:33

Ron.S

3-Jun-07 20:33

i am passing a variable as (ref var)
error :- ref object is not declared.

Thanks in Advance.

Bharath.S Ron

Re: How to deal with reference variable in C#?

KKrista3-Jun-07 20:47

KKrista

3-Jun-07 20:47

Reference variables are surely supported in C#.

I think the problem under this case might be the use of variable without declaration.

Regards,
Murali

Re: How to deal with reference variable in C#?

Ron.S3-Jun-07 20:57

Ron.S

3-Jun-07 20:57

can u please explain me how i have to rectify it.

i Have learn't C# on my own, i was working on VB Before now has been shifted to C#.
Thanks in Advance.

bharath.s

Re: How to deal with reference variable in C#?

KKrista3-Jun-07 21:07

KKrista

3-Jun-07 21:07

While calling the method, pass the 'reference' variables as

SomeMethod(ref varInput);

Then in the definition of the Method u have to use the same reference variable as,

public void SomeMethod(ref varInput)
{
//Give ur implementation here.
}

Regards,
Murali

Re: How to deal with reference variable in C#?

Ron.S3-Jun-07 21:15

Ron.S

3-Jun-07 21:15

the method has allready being deployed in vb6.o

in vb 6.0:-
public function somefunc(ref variable as string)
variable = "XYZ"
end function
in C# i have given reference to this class and function and created a Runtime callable wrapper.

IN c#

object.somefunc(ref csharpvar)

bharath.s

Re: How to deal with reference variable in C#?

jayart4-Jun-07 5:53

jayart

4-Jun-07 5:53

Make sure you are using the correct namespace.

Re: How to deal with reference variable in C#?

jimpalmer4-Jun-07 8:08

jimpalmer

4-Jun-07 8:08

maybe this?

IN c#

string csharpvar; //var must be declared first
object.somefunc(ref csharpvar)

Getting The Difference Between Months

zoroyster3-Jun-07 19:12

zoroyster

3-Jun-07 19:12

Hi, Im trying to create a C# program that will compute the exact number of months between two durations.

This is my code

TimeSpan duration = startTime - stopTime;

//to compute the difference between days, I use this code

int result = (duration.Days);

unfortunately it stops with duration.Days.. there are no available methods that will compute the months or years (eg. duration.Months , duration.Years)

i tried to compute the days and divide it by 30, but this approach is highly innacurate.

Hope you guys can help

tnx

Re: Getting The Difference Between Months

Harini N K3-Jun-07 19:25

Harini N K

3-Jun-07 19:25

Hi
Check this link

http://www.c-sharpcorner.com/UploadFile/DipalChoksi/DateDiff_CS_DC09132006172429PM/DateDiff_CS_DC.aspx[^]

Harini

Re: Getting The Difference Between Months

zoroyster3-Jun-07 21:30

zoroyster

3-Jun-07 21:30

Hi harini. Thanks for the reply. Ive read the link, but it doesn't mention anything about getting the difference between two dates in months :c

Hope you have other references..

tnx!

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