C# Discussion Boards - CodeProject

23-Oct-07 23:03

No event, or no property ?

Christian Graus - Microsoft MVP - C++

"also I don't think "TranslateOneToTwoBillionOneHundredAndFortySevenMillionFourHundredAndEightyThreeThousandSixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it )

Re: property grid

sindhutiwari23-Oct-07 23:07

sindhutiwari

23-Oct-07 23:07

sir there is a property but no event associated with it ..
my aim is to store the address of the image file when the background image is changed.
if u have any idea abt how to find the image address(physical path) of a picture
box's background image which is added dynamically using a property grid not by a
openfile dialog
plz tell me

its me sid

Re: property grid

Christian Graus23-Oct-07 23:28

Use window application in Web Application

23-Oct-07 23:28

OK, then create a class that derives from this control, override the property, and add an event.

Sun Rays23-Oct-07 22:46

Sun Rays

23-Oct-07 22:46

Hi,
I have created window application, now I want to use that window application in my Web application. So how it possible ?
I have get idea that I have to add tag in WebPage named as Object. In that I can assign that window application.

Any idea ??

Thanks,
Sun Rays

Re: Use window application in Web Application

Christian Graus23-Oct-07 22:50

Re: Use window application in Web Application

23-Oct-07 22:50

You can embedd a control in your web site, but it means your clients need to download your code and have .NET installed. There's info on MSDN, but I don't know of many people who do it.

c0ax_lx23-Oct-07 23:19

c0ax_lx

23-Oct-07 23:19

I've tried this once, there are *lots* of security issues you'd have to resolve on each client, depending on what the applications does - network, IO ,alotothersstuff...
if you just want to start the app from the browser look at clickonce deployment. clickclick done Smile | :)

If it' stuck, DO NOT pull harder!

Re: Use window application in Web Application

Paddy Boyd24-Oct-07 1:00

Paddy Boyd

24-Oct-07 1:00

Of course you could just write another UI layer for the web for your application, because of course all your business logic is separated out of the presentation layer....

multiple forms

kabutar23-Oct-07 22:41

23-Oct-07 22:41

hi,
i have two textboxes form1 and form2
in form1 and form2 i have two textboxes....
what ever i enter in textbox in form2 should be updated into textbox in form2...
i dont want to use delegates....
i have an idea ie....whatever is in textbox in form2 has to be called in form1...for that i need to create an object...but where and how and how to make it display....
can anybody give me the structure of the code in both the forms so taht i can try with that.......

thanking you

Passing Values between Forms in .NET 1.x with C# and VB.NET examples[^]

Stefan Troschuetz23-Oct-07 22:44

Stefan Troschuetz

23-Oct-07 22:44

"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning." - Rick Cook

www.troschuetz.de

Christian Graus23-Oct-07 22:51

23-Oct-07 22:51

kabutar wrote:
i dont want to use delegates....

Why not ? Delegates are the best way to do this, why are you setting out to write bad code ?

kabutar23-Oct-07 22:58

23-Oct-07 22:58

yes Christian i understand that but i want to try it this way also.....
just for once so that i know how exactly it works.....
just curious may be......

thanks in advance for your repeated help... Smile | :)

Spunky Coder23-Oct-07 22:52

Spunky Coder

23-Oct-07 22:52

Is the form1 parent of form2 ?

Koushik

kabutar23-Oct-07 22:56

23-Oct-07 22:56

yes Koushik .....
form1 is the parent form and form2 is the child form....
when we click on a button in form1 the form2 will pop up.....

Smile | :)

thanks in advance...

Christian Graus23-Oct-07 23:02

23-Oct-07 23:02

f you want to write nasty code, you can pass a reference to form1 in to form2. Again, why won't you use a delegate ?

kabutar23-Oct-07 23:12

23-Oct-07 23:12

its something like this Christian....
i wrote it with delegates but i was not very clear withy certain things in the code or how they work.....because i got the code form google...
so i wanted to try it again with and without trying delegates....
since u r insisting so much that its a bad practise i think i should stick with delegates and not waste my time the other way round...
thanks Chris..

Christian Graus23-Oct-07 23:33

23-Oct-07 23:33

kabutar wrote:
because i got the code form google...

OK - in that case, I recommend you bookmark the MSDN site. If you find code that works for you via google, then you should read MSDN to learn how the various parts of that code work. Any source of info will do, but MSDN will give you exact definitions of the classes and methods you see being used.

Delegates can be a little confusng at first, but once you get the hang of them, you'll find they are very useful.

N a v a n e e t h23-Oct-07 23:34

N a v a n e e t h

23-Oct-07 23:34

kabutar wrote:
i wrote it with delegates but i was not very clear withy certain things in the code or how they work.....because i got the code form google...

You should not use a code that is not fully understood. Check this example and try you can make it. I presume you created two forms say Form1 and Form2. You are going to declare delegate on Form2 as public. See the below code

public delegate void InformParent();
public InformParent ParentDelegate;

ParentDelegate is an object for InformParent delegate. In this sample I have not passed any parameters. You can pass whatever values you want. Now check the below code to see how this can be invoked.

Form2 frm = new Form2();
frm.ParentDelegate = new WindowsApplication1.Form2.InformParent(this.InformParent);
frm.Show();

In this InformParent() is a private method for Form1. See below

private void InformParent()
{
	//Do your form1 update code
}

When delegate is invoked, this function will be called. When you want to inform the changes to Form1 from Form2, call ParentDelegate(), which will call method in Form1.

Hope this makes it clear

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kabutar24-Oct-07 0:02

24-Oct-07 0:02

frm.ParentDelegate = new WindowsApplication1.Form2.InformParent(this.InformParent);

can you explain this code to me Navneeth.......especially this part.....new WindowsApplication1.Form2.InformParent(this.InformParent);

thanks Smile | :)

N a v a n e e t h24-Oct-07 0:05

N a v a n e e t h

24-Oct-07 0:05

kabutar wrote:
frm.ParentDelegate = new WindowsApplication1.Form2.InformParent(this.InformParent);

It's nothing but initializing delegate and telling where it should call. So when you call ParentDelegate() from Form2, it will call private method InformParent() which is in Form1

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N a v a n e e t h23-Oct-07 23:37

N a v a n e e t h

23-Oct-07 23:37

Christian Graus wrote:
f you want to write nasty code

But how this will be nasty ? Delegates also we are passing the function reference, in this case we are passing object reference. What is the difference ?

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