The server block is not well formed

for this you can use show gritter jquery  from github or search on google
I have no more idea about gritter but i know gritter will show message as you want.
search for gritter google.

syntax is like this


 ScriptManager.RegisterClientScriptBlock(Page, this.GetType(), "CallJS", "showGritter('Record Not Found...','No Record For Search','top-center');", true);
                return;

Hi Khargesh,

Thank you so much for helping me all these while! One last thing I hope you can help me with:

Please refer to the below codes. How do I Transfer this block of code to use a response of a Javascript messagebox ?

MessageBox.Show("") is using in windows form
To display message you can use javascript alert

like

string message = "wrong emailid .";

  System.Text.StringBuilder sb = new System.Text.StringBuilder();

  sb.Append("");

  ClientScript.RegisterClientScriptBlock(this.GetType(), "alert", sb.ToString());

Hi Khargesh,

I've managed to fix the earlier errors. Thanks alot! However now I'm facing an error pertaining to the message box in my page. Can you kindly advise on this too? Many thanks!

check your cs page
there should be same name.

and  here why you have write masterpage==
there should be single = operator

Hi Khargesh,

I've changed the text to "Login". However, I'm still facing the same error.

what is your page name you have write  codefile name is Login
and it inherits to Default page
If login is page name then it should inherit login and in cs code name should be same
check it