CODEWITHSUNDEEP
c#eventsbutton
Matrix001
Matrix001

Reputation: 1272

Events and Buttons

I want to get the text of the button whenever I click on it.

The algorithm that I made is where i have a function that is a loop that creates a number of buttons and assigns numbers:

    void ListAllPage()
    {
        if (pageMax < 50)
        {
            //if page max less than 50
            for (int i = 0; i < pageMax; i++)
            {
                Button newBtn = new Button();
                newBtn.Text = i.ToString();
                newBtn.Width = 50;

                newBtn.Click += page_Clicked;

                pageCell.Controls.Add(newBtn);
            }
        }
}

Now buttons will appear on the screen, their events will be triggered and the function page_Click; will be executed:

 public void page_Clicked(object sender, EventArgs e)
    {

  //inside this function I want to obtain the button number that was clicked by the user. How do I do that?
    }

Take note, I must all the functions that I described here,...

My thinking is to feed all the buttons that i created inside the loop to a dictionary.. Dictionary.. it will take variables like this btndic.Add(Button b=new Button,b.text);

But the issue is how to retrieve the buttons,,,

if there is a better way, i would like to hear about it...

Upvotes: 2

Views: 119

Answers (4)

Snowbear
Snowbear

Reputation: 17274

in your ListAllPage method assign Tag to each button: 

newBtn.Tag = i;

In your handler you can obtain button instance from sender: 

var clickedButton = (Button)sender;
int pageIndex = (int)clickedButton.Tag;

Upvotes: 1

ub1k
ub1k

Reputation: 1674

instead of using the Click Event -> Use the Command Event: http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.button.oncommand.aspx then you can distinguish which button has been clicked

Upvotes: 2

danyolgiax
danyolgiax

Reputation: 13086

Try this way

public void page_Clicked(object sender, EventArgs e)
{

   Button btn=(Button)sender;
}

Upvotes: 2

vgru
vgru

Reputation: 51224

You just need to cast the sender object to a Button, or more generally, a Control:

public void page_Clicked(object sender, EventArgs e)
{
     Control c = sender as Control;
     MessageBox.Show("Clicked on " + c.Text);
}

Also, it might be more appropriate to use the Tag property to store your custom information (number). In that case, Text property can be anything you like.

Upvotes: 2

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