CODEWITHSUNDEEP
c#javascriptjqueryasp.net
DotnetSparrow
DotnetSparrow

Reputation: 27996

stop asp.net postback when UseSubmitBehavior="false"

I have an asp.net button with UseSubmitBehavior="false" like this:

  <asp:Button ID="btnLogin" runat="server" UseSubmitBehavior="false"    OnClientClick="if (!LoginPopup()) {return false;}" CssClass="login-button" Text="<%$ Resources: HRGELoggedOutMaster, Login %>"> </asp:Button>

and js function like this:

 function LoginPopup() {       
        var username = $("#<%= UsernameTextBox.ClientID %>").val();
        var password = $("#<%= PasswordTextBox.ClientID %>").val();
        var remMe;
        if ($('#<%= chkRememberMe.ClientID %>').attr('checked') == "checked") {
            remMe = true;
        }
        else {
            remMe = false;
        }

        if (username != '' && password != '')
            CallPageMethod("LoginPopup", ["username", username, "password", password, "rememberMe", remMe], LoginPopupSucceeded, LoginPopupFailed);
        else
            alert("Invalid username/password");
            return false;
    }

and I call it on keypress of textboxes like this:

   $("#<%=this.UsernameTextBox.ClientID%>").keypress(function (event) {
           fireButtonClick($("#<%=this.btnLogin.ClientID%>"), event);
        });



 function fireButtonClick(ctrl, event) {
        if (event.which || event.keyCode) {
            if ((event.which == 13) || (event.keyCode == 13)) {
                ctrl.click();
                return false;
            }

I want to stop postback when input is invalid but It is not working. Please suggest me how to stop postback

Upvotes: 4

Views: 9401

Answers (2)

Phillip Rochester
Phillip Rochester

Reputation: 87

When UseSubmitBehavior="false" is added to ASP.NET button then __doPostback('btnLogin','') is automatically added to onclick event after your OnClientClick definition, so avoid __doPostback side server you must add return like that

<asp:Button ID="btnLogin" runat="server" UseSubmitBehavior="false"
OnClientClick="if (!LoginPopup()) {return false;} return;" CssClass="login-button" Text="<%$ Resources: HRGELoggedOutMaster, Login %>"> </asp:Button>

Upvotes: 0

Diogo Cid
Diogo Cid

Reputation: 3794

I don't know if your problem is the same I have. Inside updatepanel when i put UseSubmitBehavior=false the page makes postback.

So I put one defaultbutton in panel, like:

<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional" defaultbutton="btnDisableEnter"> 
<ContentTemplate> 
    <asp:Button ID="btnDisableEnter" runat="server" Text="fake button" OnClientClick="return false;" style="display:none;"/>
</ContentTemplate></asp:UpdatePanel>

Upvotes: 1

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