identify a clicked button from a dynamically created button array

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how can we identify a button whether it is clicked or not,when those buttons are created as dynamic button array?

Question
there are set of buttons in a column which are created from a for loop(dynamically).
2nd button of the column is clicked.how can we identify that the user has clicked the 2nd button?

{
 x = 30;
 for (int i = 0; i < ar.Length; i++)
 {
     bu[index1] = new Button();
     bu[index1].Location = new Point(50, x);
     bu[index1].Size = new Size(75, 20);
     bu[index1].Text = "1";
     bu[index1].Name = b+ i;
     bu[index1].Click += new EventHandler(button_Click1);
     x = x + 100;
     index1++;
 }
 this.Controls.AddRange(bu);
}

private void button_Click1(object sender, EventArgs e)
{
     if(bu[0].Name=="b0")
     MessageBox.Show("selected rw1");
     else if(bu[1].Name=="b1")
     MessageBox.Show("selected rw2";

}

above code is not working expected as explained in the Question.can any one help me to correct this??

Posted 24-Mar-11 2:23am

Member 7779792

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2 solutions

Solution 1

bu[index1].Name = "b" + i;
Don't forget the quotes! (Your compiler should be picking that mistake up though unless you happen to have a string or numeric variable called b lying around.)

In the handler you need to be checking the name of the button that was actually clicked ((Button)sender). If bu is a global array you could also look for sender in bu in the handler to discover the index of the button that was clicked.

Posted 24-Mar-11 2:27am

BobJanova

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CPallini · Accepted Answer · 2011-03-24T02:30:00

Solution 2

You have the sender argument available, use it. For instance:

C#

private void button_Click1(object sender, EventArgs e)
{
  Button selected = sender as Button;
  MessageBox( selected.Name);
}

Posted 24-Mar-11 2:30am

CPallini

Comments

Olivier Levrey 24-Mar-11 9:06am

My 5.

Member 7779792 24-Mar-11 10:36am

thanx alot!appreciate your help very much!thnx once again.