ASP.NET Button not triggered inside a Bootstrap 3 Modal - asp.net

Question

Trying to make a login form inside a Bootstrap 3 Modal, but the login button doesn't do any postback.
The most weird thing is that i have used Bootstrap Modal before in similar situations with no problems.
Here's my code:
<div id="modalLogin" class="modal fade" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<h4 class="modal-title">Login</h4>
</div>
<div class="modal-body">
<div class="form-horizontal">
<div class="form-group">
<label for="tbLoginEmail" class="col-sm-2 control-label">Email</label>
<div class="col-sm-9">
<asp:TextBox ID="tbLoginEmail" TextMode="Email" CssClass="form-control" runat="server" placeholder="Email" />
</div>
<div class="col-sm-1 error-message">
<asp:RequiredFieldValidator ID="rfvLoginEmail" ErrorMessage="*" ControlToValidate="tbLoginEmail" runat="server" Display="Dynamic" />
</div>
</div>
<div class="form-group">
<label for="tbLoginPassword" class="col-sm-2 control-label">Password</label>
<div class="col-sm-9">
<asp:TextBox ID="tbLoginPassword" TextMode="Password" CssClass="form-control" runat="server" placeholder="Password" />
</div>
<div class="col-sm-1 error-message">
<asp:RequiredFieldValidator ID="rfvLoginPassword" ErrorMessage="*" ControlToValidate="tbLoginPassword" runat="server" Display="Dynamic" />
</div>
</div>
</div>
</div>
<div class="modal-footer">
<asp:Button ID="btLogin" Text="Login" CssClass="btn btn-standard" runat="server" OnClick="btLogin_Click" />
</div>
</div>
</div>
</div>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
C# Code:
protected void btLogin_Click(object sender, EventArgs e)
{
///validate user credentials in membership
if (Membership.ValidateUser(tbLoginEmail.Text, tbLoginPassword.Text))
{
///login user to application
FormsAuthentication.SetAuthCookie(tbLoginEmail.Text, true);
///redirect to catalog page (TODO: redirect user to profile page)
Response.RedirectToRoute("catalog-page");
}
else
{
lbResult.Text = "error";
}
}
I'm using ASP.NET Web Forms 4.5 and the Modal is in the MasterPage.

Answer 1

I've found out my problem! i'm using validation controls not only in the login form, but in the register form as well. Since both the forms are in the master page if one of them is empty any button in the page will no be submitted.
To resolve my issue (i know, a rookie mistake), i added a validation group to each form - Login and Register.
Sorry for any inconvenience...