How to call javascript function in C#.net?

Call the javascript function on button click event...

<script type="text/javascript">
function Call()
{
     alert("Call Function");
}
</script>


protected void Page_Load(object sender, EventArgs e)
{
     Button btn= new Button();
     btn.ID = "Button1";
     btn.Attributes.Add("runat", "server");
    btn.Attributes.Add("onclick", "Call()");
     btn.Text = "Check";
     this.form1.Controls.Add(btn);
}