How to "generally" detect click events?

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I have several buttons on a TableLayoutPanel that have certain tags assigned to them to distinguish them from one another.
Like for instance, if a button is a cake icon, then its tag is "cake", so on and so forth.

What I'm trying to achieve is that if the user clicks on the correct button/item, there will be some sort of a popup message, etc.

Here's what I have so far:

C#

private void Buttons_Click(System.Object sender, System.EventArgs e)
        {
            Button btn = sender as Button;
            string tag = Convert.ToString(btn.Tag);

        //if the problem is cake, and the button has "cake" as its tag, then it's correct
            if (tag.Equals(problem))
            {
                //Add Score\
                MessageBox.Show("Correct!");
            }

            else
            {
                MessageBox.Show("Error");
                second -= 2;
            }
        }

The message boxes don't pop up though. (I'm not that sure of this code as I just ran across this while searching for a possible solution)

Posted 13-Sep-14 5:55am

kmllev

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Arun Banik 13-Sep-14 12:08pm

Message boxes from code behind does not work with certain browsers. You can validate the same at client side using JavaScript or JQuery. It will be simple. You can create a custom popup window to show the message or using DIV element to the message.

You can create a floating DIV shown in this page ... http://www.encodedna.com/2012/12/floating-div-using-css.htm

BillWoodruff 13-Sep-14 23:55pm

This question is about WinForms programming with C#: it has nothing do to with HTML, JavaScript, jQuery, etc.

BillWoodruff 13-Sep-14 12:44pm

Show us the code where you assign the Click EventHandler to the Buttons.

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OriginalGriff · Accepted Answer · 2014-09-13T06:15:00

Since you don't get any MessageBox, and there is one on each side of the if...else, there are two obvious possible causes:
1) The button Tag property is null: you will get a null reference exception on the if statement as Convert.ToString will return null for a null input. (I'd check as a standard action anyway)
2) The click method is not getting executed at all.

The second is probably the one you are meeting. So check that the event handler is hooked up to each and every Button.Click event...because I'm guessing you didn't do that bit, and it's not automatic.