DaniWeb Forum Index > Software Development > C#

C# RSS

click events for rutime generated controls

Please support our C# advertiser: Intel Parallel Studio Home

•

Join Date: Oct 2009

Posts: 22

Reputation: bk_bhupendra is an unknown quantity at this point

Solved Threads: 1

bk_bhupendra bk_bhupendra is offline

Offline

Newbie Poster

click events for rutime generated controls

-2

19 Days Ago

hi,
Can any1 help me...

problem:
I hav 2 create some buttons and labels during runtime...(already done)..
nw i wnt to fire sm events for each such generated controls...

main objective is to pass argumnts to a function that create a new form n pass the value to it,,,
just like generating a form with friends name when we click frinds name on another page(eg: Gtalk)

Last edited by peter_budo; 17 Days Ago at 4:56 am. Reason: Removing quote, not necessary

•

Join Date: Oct 2008

Posts: 2,560

Reputation: adatapost has much to be proud of

Solved Threads: 454

adatapost

Online

Posting Maven

19 Days Ago

Try it,

 Help with Code Tags 
 C# Syntax (Toggle Plain Text) 
   private void Form1_Load(object sender, EventArgs e)
        {
            Button b = new Button();
            b.Click += new EventHandler(b_Click);
        }
 
        void b_Click(object sender, EventArgs e)
        {
            // put your code
        }
   private void Form1_Load(object sender, EventArgs e)
        {
            Button b = new Button();
            b.Click += new EventHandler(b_Click);
        }

        void b_Click(object sender, EventArgs e)
        {
            // put your code
        }

Failure is not fatal, but failure to change might be. - John Wooden

•

Join Date: Oct 2009

Posts: 22

Reputation: bk_bhupendra is an unknown quantity at this point

Solved Threads: 1

bk_bhupendra bk_bhupendra is offline

Offline

Newbie Poster

click events for rutime generated controls

-1

19 Days Ago

sry sir, bt i hav generated 10 button and for each one i hav to fire event..
i need to pass some values too in case of each button...
hew is it possible wit ur reply

Last edited by peter_budo; 17 Days Ago at 4:57 am. Reason: Removing quote

•

Join Date: Aug 2009

Posts: 306

Reputation: Ryshad has a spectacular aura about

Solved Threads: 55

Ryshad

Online

Posting Whiz

19 Days Ago

What values do you need to pass? Unless you right a custom event handler, the click event has a defined argument list.
You can check which button was clicked inside the event handler by converting Sender back to a button:

 Help with Code Tags 
 C# Syntax (Toggle Plain Text) 
Button btnClicked = (Button)sender;
if(btnClicked.Name=="Button1")
     //do something
Button btnClicked = (Button)sender;
if(btnClicked.Name=="Button1")
     //do something

Alternaively, if each button has different behaviour then give each one a different handler:

 Help with Code Tags 
 C# Syntax (Toggle Plain Text) 
   private void Form1_Load(object sender, EventArgs e)
        {
            Button b1 = new Button();
            b1.Click += new EventHandler(b1_Click);
            Button b2 = new Button();
            b2.Click += new EventHandler(b2_Click);
        }
         void b1_Click(object sender, EventArgs e)
        {
            // put your code
        }
         void b2_Click(object sender, EventArgs e)
        {
            // put your code
        }
   private void Form1_Load(object sender, EventArgs e)
        {
            Button b1 = new Button();
            b1.Click += new EventHandler(b1_Click);
            Button b2 = new Button();
            b2.Click += new EventHandler(b2_Click);
        }
         void b1_Click(object sender, EventArgs e)
        {
            // put your code
        }
         void b2_Click(object sender, EventArgs e)
        {
            // put your code
        }

Please don't take for granted the work that solvers do for you. Take the time to fully understand the code they give you so that you might adapt it to future problems.

"Learning is more than absorbing facts, it is acquiring understanding.” - William Arthur Ward

•

Join Date: Oct 2009

Posts: 22

Reputation: bk_bhupendra is an unknown quantity at this point

Solved Threads: 1

bk_bhupendra bk_bhupendra is offline

Offline

Newbie Poster

click events for rutime generated controls

-2

19 Days Ago

im building windows application
it generate buttons during run time

code:

 Help with Code Tags 
 C# Syntax (Toggle Plain Text) 
int x=50,y=50;
                    for(int i=0;i<10;i++)
                    {
 
                        Button field = new Button();
                        ActiveForm.Controls.Add(field);
 
                        field.Name = "button"+i.ToString();
                        field.Text = i.ToString();
                        field.Size = new Size(100,23);
                        field.Location = new Point(x, y);
 
 
                        y = y +30;
 
 
                    }
int x=50,y=50;
                    for(int i=0;i<10;i++)
                    {
                       
                        Button field = new Button();
                        ActiveForm.Controls.Add(field);
                        
                        field.Name = "button"+i.ToString();
                        field.Text = i.ToString();
                        field.Size = new Size(100,23);
                        field.Location = new Point(x, y);

                        
                        y = y +30;
                        
                           
                    }

nw hw can i write click events b4 runtime....
it will show error since no such buttons are defined???

Last edited by peter_budo; 17 Days Ago at 4:58 am. Reason: Removing quote tags

•

Join Date: Oct 2009

Posts: 22

Reputation: bk_bhupendra is an unknown quantity at this point

Solved Threads: 1

bk_bhupendra bk_bhupendra is offline

Offline

Newbie Poster

click events for rutime generated controls

-2

19 Days Ago

these no of buttons depends on d value of 'i'....
i cnt define a particular no of bttns....

Last edited by peter_budo; 17 Days Ago at 4:59 am. Reason: Keep It Clean - We strongly encourage all posts to be in full-sentence English.

•

Join Date: Aug 2009

Posts: 306

Reputation: Ryshad has a spectacular aura about

Solved Threads: 55

Ryshad

Online

Posting Whiz

19 Days Ago

I think we have some thread crossing going on here cos that code you posted came from another thread i've replied to :p

I'm not entirely sure what you are asking though. You said you create 10 buttons, but now you say you dont know how many buttons will be created. My response to the other thread shows how to create a runtime-determined number of buttons. The code here shows how to add event handlers.

Can you please be more specific about what you need clarifying?

•

Join Date: Oct 2009

Posts: 22

Reputation: bk_bhupendra is an unknown quantity at this point

Solved Threads: 1

bk_bhupendra bk_bhupendra is offline

Offline

Newbie Poster

click events for rutime generated controls

-2

18 Days Ago

k... here it is wat i wnt to do...

im working on a lan chatting system..
there r 10 systems on a LAN
i detect all computers on the Lan....
if they are available(on) i wil create corresponding button...

on clicking that i wil connected to that particular system...
so there sud be events to check which button is clicked...
and so wil b the corresponding action..

these buttons r created dynamically(based on no of computers available)... co i cnt name thm in advnce... thats y used a loop....

nw if the no of comp in Lan incrases i wil create more buttons n the same process for each one...

hav u got wat i mean...
pls help....

Last edited by peter_budo; 17 Days Ago at 5:02 am. Reason: Removing quote tag

•

Join Date: Aug 2009

Posts: 306

Reputation: Ryshad has a spectacular aura about

Solved Threads: 55

Ryshad

Online

Posting Whiz

18 Days Ago

I posted this in a similar thread:

 Help with Code Tags 
 C# Syntax (Toggle Plain Text) 
            string[] Descriptions = { "One", "Two", "Another Description", "Desc." };
 
            for( int i = 1; i<=Descriptions.Length;i++)
            {
                Button btn = new Button();
                btn.Name = "btn" + i.ToString(); //btn1, btn2, etc
                btn.Text = Descriptions[i - 1];
                panel1.Controls.Add(btn);
            }
            string[] Descriptions = { "One", "Two", "Another Description", "Desc." };

            for( int i = 1; i<=Descriptions.Length;i++)
            {
                Button btn = new Button();
                btn.Name = "btn" + i.ToString(); //btn1, btn2, etc
                btn.Text = Descriptions[i - 1];
                panel1.Controls.Add(btn);
            }

You can adapt this to your requirements. Load the currently active clients into an array/collection then use the length of the collection to determine the number iterations in the loop