Dynamically adding controls to web form and their event handling in ASP.NET using C#

Add control dynamically using code on web form

Sometimes in web form we need to add controls using code. Following C# code can be used to add button control dynamically to web form.

Button btn1 = new Button();     btn1.Text = "New Button";     this.Controls.Add(btn1);

To add the dynamically created button control to a Panel control use following code -

Panel1.Controls.Add(btn1);

Event Handler for dynamically added control

We can use following code to declare click event for dynamically added button code-

btn1.Click += new EventHandler(btnClick);

After declaring the click event, define the event handler using C# -

private void btnClick(object sender, EventArgs e) {       Button btn = (Button)sender;  //get the button which is                                       clicked       // write your code }

So, the complete code becomes -

{     Button btn1 = new Button();     btn1.Text = "New Button";     this.Controls.Add(btn1);     btn1.Click += new EventHandler(btnClick);  } private void btnClick(object sender, EventArgs e) {       Button btn = (Button)sender;  //get the button which is                                       clicked       // write your code }

Similarly you can add label, linkbutton and many other controls dynamically and invoke their event handler in ASP.NET.

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