__doPostBack and hit function

I want my javascript to fire the postback event. I ha开发者_如何学编程ve put the javascript call in the onClientClick:

<asp:Button ID="submit_btn" runat="server" 
            OnClientClick="javascript:doSubmit();" Text="Update" Width="75px" 
            Height="26px" PostBackUrl="#"  />

I am verifying some values and then submitting:

        __doPostBack('submit_btn', '');

The problem is that the 'click event submit_btn_Click is not being hit. I thought this would be the case! Is this wrong?

Your <asp:Button> will always generate a post-back event, and flow into your Page_OnLoad() and other initialization events. You won't need to specifically call the JavaScript method __doPostBack().