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how can i put if condition for button click event ??

Posted on 2011-02-28
Medium Priority
Last Modified: 2012-05-11
i want to know that how can i put if condition for button click event ??

if (this.btnNext.Click += new EventHandler(this.btnNext_Click))
      // some constructor logic here ....

error in above coding ..

what can i do to check whether button is clicked or not ??
Question by:Parth48
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LVL 10

Expert Comment

by:Asim Nazir
ID: 35004419

Once button is clicked, it will go to Event handler body and there you can do further processing.

this.btnNext.Click += new System.EventHandler(this.btnNext_Click);

private void btnNext_Click(object sender, EventArgs e)
  // Code for further processing

Open in new window

Let me know if you need further help.

LVL 10

Expert Comment

by:Asim Nazir
ID: 35004433
Using designer, In order to add event for this button, do following:

1. Go to designer
2. Double click the desired button

This will add event handling code to your form.
LVL 19

Expert Comment

by:Manoj Patil
ID: 35004483
Hi, you can check by following way

bool bBtnClicked = false;

    private void cmdOne_Click(object sender, System.EventArgs e) {
        if ((bBtnClicked == true)) {
            MessageBox.Show("This button is clicked already ....");
        else {
            MessageBox.Show("This button is clicked First time ....");
        bBtnClicked = true;

Expert Comment

ID: 35004485
can u please tell us what exactly you want to do?
LVL 10

Accepted Solution

John Claes earned 2000 total points
ID: 35004913

You have created a button:
using the folowing code you're adding a event handler upon the Button
this.btnNext.Click += new System.EventHandler(this.btnNext_Click);

An Event handler is called when you perform the action upon the Control :
In this case : Click btnNext

So when you click your button the handler is called that is going to perform the set Method

private void btnNext_Click(object sender, EventArgs e)
  // Code for further processing

What is the difference between this and your code ???
==> The if condition is setting the Click_Event handler and can't be used as condition.

poor beggar


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