Question

I have a common function(custom control’s function) that is called from various webpages in the application.
In the common function,I call a javascript like this(Sample Code)-

public void ShowMessage(string strMessage)
{
   string s=String.Empty;
   s="<script type='text/javascript'>\n";
   s = s + "alert('+strMessage+');";
   s = s + "</script>";
   Page.ClientScript.RegisterStartupScript(typeof(Page), this.ClientID, s);
}

When I called this function from a page that is using UpdatePanel,Page.RegisterStartUpScript didn’t work.
So, I have to use
ScriptManager.RegisterClientScriptBlock(Page, Page.GetType(), this.ClientID, s, false);
Now,I have to pass one more parameter to determine the function was called from UpdatePanel.
Like this-

public void ShowMessage(string strMessage,bool isFromUpdatePanel){..}

My Question is ,In the common function,can I know whether the function is called from UpdatePanel or not(without using parameter)?

Answer 1

I found an answer and I will use this(got from Here)-

string args= Page.Request.Params.Get("__EVENTTARGET");
if (!String.IsNullOrEmpty(args))
{
    //Called From Update Panel(or) UpdatePanel is posting back
}
else
{
    //Called From a page with no Update Panel
}

If there is a better solution,please teach me.