Why page is refreshing on onclientClick of asp button?

Question

I have a .aspx page and it has one text box and button Like:

Enter Movie Id :<asp:TextBox ID="txtMovieId" runat="server"></asp:TextBox>
<asp:Button ID="btnSubmit" runat="server" Text="Movie Detail" OnClientClick="OnGetMovieDetailByMovieId()" />

OnClientClick i am calling a javacript function

function OnGetMovieDetailByMovieId()
{
var movieId = document.getElementById('<%= txtMovieId.ClientID %>').value;
MovieService.GetMovieDetailByMovieId(movieId, OnGetMovieDetailByMovieIdComplete, OnError)
}

and this function is calling Ajax-enable WCF service method from MovieService.

I have also defiend both callback function but when i click on button its get data from wcf web service and page again refresh and I lost data on page.

So why page is refreshing while i have only onclientclick of button.
Please suggest.

Thanks
Sandeep

Sukesh Marla · Answer

Change it to function OnGetMovieDetailByMovieId() { var movieId = document.getElementById(' ').value; MovieService.GetMovieDetailByMovieId(movieId OnGetMovieDetailByMovieIdComplete OnError) return false; } Check this is correct answer if it helped/

Krishna Garad · Answer

Simply remove runat=server attribute from your button or keep html input type button on the asp.net page.

Sandeep Singh Shekhawat · Answer

Thanks

Sukesh Marla · Answer

See Basically button control make postback to the server onclick if you notice i have written return false in button.onclientClick  which notifies Browser not to postback.

Sandeep Singh Shekhawat · Answer

Thanks Sukesh...Can you please explain how is it working to avoid refreshing on page?

Sandeep Singh Shekhawat · Answer

Thanks Shivanand Arur for response. I have implemented this but its not working means page is refreshing.

Shivanand Arur · Answer

function OnGetMovieDetailByMovieId() { var movieId = document.getElementById(' ').value; MovieService.GetMovieDetailByMovieId(movieId OnGetMovieDetailByMovieIdComplete OnError) return false; } Try adding the script which is bold in your function...