Calling JavaScript alert from a static method in C#

Question

How to call a JavaScript alert from a static method in C#?

I have tried the following code but the method does not get called.

 public static void WriteToErrorLog()
 {   
     Page mypage = new Page();
     ErrorMessage(mypage);                
 }
 public static void ErrorMessage(Page page)
 {
     page.ClientScript.RegisterStartupScript(typeof(Page), "alert", "<script type='text/javascript'>alert('Oops something went wrong, please try later...!!');</script>");
 }

Answer 1

you can use the following code to get a reference to the current ScriptManager:

var currentScriptManager = System.Web.UI.ScriptManager.GetCurrent(page);

and then use it as per the following example:

currentScriptManager.RegisterClientScriptBlock(page.GetType(), "pagename", " ", "alert('ERROR')", true);