create dynamic button and add in panel or div

Did you try anything at all?

Steps:
1. Create a button

Button myButton = new Button();
myButton.ID = "myButton";
myButton.Text = "Click Me!";

2. Add the event handler to button

myButton.Click += new EventHandler(myButton_Click);

3. Add button to a panel or div

myPanel.Controls.Add(myButton);

4. Define a button handler in code behind from before

protected void myButton_Click(object sender, EventArgs e)
{
   // Open a link or do whatever you like!
}

Try!