Chandradev's Blog

Hi

There are so many approaches to display alert message from code behind file i.e by vb.net and C#. But one of the easiest ways to display alert message using Ajax ScriptManager like this

Write code on buttonclick event like this

 protected void Button1_Click(object sender, EventArgs e)
    {
        // Here will be your some conditional code
        ScriptManager.RegisterStartupScript(this, GetType(), "showalert", "alert('Data has been added Sucessfully');", true);
    }