My form has two buttons. One should call post back event (call server side OnClick method) without validating the form with jquery validate plug-in and other is basically submit sort of button which calls server side method only if the form is validated. To acheive this i have two buttons as mentioned below.

The following button checks for validation and only if the form is valid it calls the server side method.

<asp:button id="btnSubmit" runat="server" text="Submit" onclick="btnSubmit_Click" class="btn btn-primary"></asp:button>

The following should call post back event irrespective of form is valid or not. My intension this should not check if the form is valid or not.

<asp:button id="btnSave" runat="server" text="Save To Drafts" usesubmitbehavior="false" onclientclick="saveDraft" onclick="btnSave_Click" class="btn btn-primary"></asp:button>

Now the behavior of the form is if i fill some details and leave out some compulsory fields or all compulsory fields and click on my "Save To Drafts" button which i intend to cause post back  regardles of form validation, It works well and calls post back event. 

However, once I hit submit button and form is invalidated, if i click "Save To Drafts" button it doesn't work means it doesn't raise post back event.

Any help is much appreciated. I couldn't get solution to this though i have spent couple of days on this. I can post you the jquery form validation code if you need