How to execute click event on dynamically created button in C # .net
I am trying to create an application where the user can select a category and according to it displays their subcategories, these subcategories are buttons that are dynamically created.
Now when the buttons are dynamically created, I am confused how to write code on the button_click event as I don't know how many subcategories there are.
So, is there any way I can execute a click event on a specific button so that I can execute specific commands?
EDITED
This is the code I tried
Button btnDynamicButton = new Button();
private void btnclick_Click(object sender, EventArgs e)
{
label2.Text = btnDynamicButton.Text;
}
private void btnappetizer_Click(object sender, EventArgs e)
{
groupBox2.Visible =false;
DataTable dt = new DataTable();
dt = itemmasterbl.SelectallrecordFromtblItem(btnappetizer.Text);
for (int i = 0; i < dt.Rows.Count; i++)
{
string name = "Appetizer" + DynamicButtonCount;
Button btnDynamicButton1 = new Button();
btnDynamicButton1.Name = name;
btnDynamicButton1.Text = name;
btnDynamicButton1.Size =
new System.Drawing.Size(150, 30);
btnDynamicButton1.Location =
new System.Drawing.Point(180, DynamicButtonCount * 30);
btnDynamicButton1.Click +=new EventHandler(btnclick_Click);<br>
Controls.Add(btnDynamicButton1);
DynamicButtonCount++;
btnDynamicButton = btnDynamicButton1;
}
}
Once I do that, it creates three buttons according to the number of values in the DB of the itemmaster under appetite, but as soon as I click on any of the three buttons, only the last button text is shown on the label, because on the last line I have:
btnDynamicButton = btnDynamicButton1;
Which information will be displayed last, but I want whatever button I click should display the appropriate text. How can I achieve this.
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you can put all your logic in one handler:
System.Windows.Forms.Button b = new System.Windows.Forms.Button();
b.Click += new EventHandler(b_Click);
//finally insert the button where it needs to be inserted.
...
void b_Click(object sender, EventArgs e)
{
MessageBox.Show(((System.Windows.Forms.Button)sender).Name + " clicked");
}
To your edit:
You keep the link for your button (s) inside the box btnDynamicButton
. Hence, it is always overwritten with the last button you created. You shouldn't link to a button using a field. The sender
click handler parameter contains the button element that was clicked. See the above code: Simple drop sender
before Button
and you know which button was pressed:
private void btnclick_Click(object sender, EventArgs e)
{
Button btn = (Button)sender
label2.Text = btn.Text;
}
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