Set Focus and next Tab when Form is submitted in ASP.Net AJAX TabContainer

Here I have created sample that full-fill your requirement.

HTML

<div>
    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
    <script type="text/javascript">
        $(function () {
            setTimeout(function () {
                $("[id*=txtName]").focus();
            }, 100);
        });
        function ValidatePage() {
            var val = $('.Validator')
            var IsValid = true;
            val.each(function () {
                if ($(this)[0] != undefined && $(this)[0] != null) {
                    ValidatorValidate($(this)[0]);
                    if (!$(this)[0].isvalid) {
                        var tabContainer = $get('<%=TabContainer1.ClientID%>');
                        if (tabContainer != undefined && tabContainer != null) {
                            tabContainer = tabContainer.control;
                            var index = $(this).parent().index();
                            tabContainer.set_activeTabIndex(index);
                            IsValid = false;
                        }
                        return false;
                    }
                }
            });
            if (!IsValid) {
                return IsValid;
            } else {
                alert("All validation succeeded");
                return IsValid;
            }
        }
    </script>
    <ajax:ToolkitScriptManager runat="server">
    </ajax:ToolkitScriptManager>
    <ajax:TabContainer ID="TabContainer1" runat="server" ActiveTabIndex="0">
        <ajax:TabPanel ID="tabPanel1" runat="server" HeaderText="Name Section">
            <ContentTemplate>
                Enter Name:
                <asp:TextBox ID="txtName" runat="server" CssClass="span12">  </asp:TextBox>
                <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="txtName"
                    ErrorMessage="Enter Name" ForeColor="red" SetFocusOnError="true" CssClass="Validator"></asp:RequiredFieldValidator>
            </ContentTemplate>
        </ajax:TabPanel>
        <ajax:TabPanel ID="tabPanel2" runat="server" HeaderText="Password Section">
            <ContentTemplate>
                Enter Password :
                <asp:TextBox ID="password_text" runat="server" TextMode="Password" CssClass="span12">  </asp:TextBox>
                <asp:RequiredFieldValidator ID="RequiredFieldValidator3" runat="server" ControlToValidate="password_text"
                    ErrorMessage="Enter Password" ForeColor="red" SetFocusOnError="true" CssClass="Validator"></asp:RequiredFieldValidator>
            </ContentTemplate>
        </ajax:TabPanel>
        <ajax:TabPanel ID="tabPanel3" runat="server" HeaderText="Address Section">
            <ContentTemplate>
                Enter Address :
                <asp:TextBox ID="txtAddress" runat="server" CssClass="span12">  </asp:TextBox>
                <asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ControlToValidate="txtAddress"
                    ErrorMessage="Enter Address" ForeColor="red" SetFocusOnError="true" CssClass="Validator"></asp:RequiredFieldValidator>
            </ContentTemplate>
        </ajax:TabPanel>
    </ajax:TabContainer>
    <asp:Button ID="submit" Text="Submit" OnClientClick="return ValidatePage();" runat="server" />
</div>

Screenshot