Hi Vanessa,
Use the formnovalidate attribute for Dashboard button.
The formnovalidate attribute is a boolean attribute.
It specifies that the form-data should not be validated on submission.
This attribute overrides the form's novalidate attribute.
'Dashboard Button
<td class="auto-style39">
<asp:Button ID="btnDashboard" runat="server" Height="37px" Text="Dashboard" Width="192px" Class="btn btn-info" formnovalidate />
</td>
'Text Field that required user iinput
<td class="auto-style50">Name:</td>
<td class="auto-style56">
<asp:TextBox ID="txtName" runat="server" CssClass="form-control" placeholder="Enter Fullname" required="required" Width="183px" />
'Submit Button
<asp:Button ID="btnSubmit" runat="server" Height="37px" Text="Submit" Width="117px" Class="btn btn-primary" />