jensbits

Commonly, a login username is the individual’s email address. If you have used the CreateUserWizard in ASP.NET 3.5, you know that the username field and the email field are separate fields. Username is required by the wizard and email is not. If you want to populate the email field in the database with the username field, it is not obvious on the surface how to do it. Fortunately, it’s just some minor mods to the web.config and the aspx page.

web.config

In the web.config file, you will add requiresUniqueEmail=”true” to the membership providers add entry. Below is a stripped down example.

 <membership defaultProvider="MyMembership">
      <providers>
        <add name="MyMembership" type="System.Web.Security.SqlMembershipProvider" connectionStringName="MyConnectionString" requiresUniqueEmail="true" />
        </providers>
 </membership>

aspx page

On the aspx page itself, you will add RequireEmail=”false” so the email textbox is not mandatory, a call to a function in the OnCreatedUser event, and a call to a function in the OnCreatingUser event. Also, some validation is added to the username field to ensure that it is in a valid email format. Finally, you will add an invisible textbox control for the email field since unique email is required in the webconfig.

<asp:CreateUserWizard ID="CreateUserWizard1" OnCreatedUser="CreateUserWizard1_CreatedUser" OnCreatingUser="CreateUserWizard1_CreatingUser" RequireEmail="false" Runat="server">

<asp:TextBox ID="UserName" Width="200" runat="server"></asp:TextBox>

<asp:RequiredFieldValidator ID="UserNameRequired" runat="server" ControlToValidate="UserName" ErrorMessage="E-mail is required."ValidationGroup="CreateUserWizard1" />

<asp:RegularExpressionValidator ID="regEmail" ControlToValidate="UserName" Text="Invalid e-mail" ValidationExpression="\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*" Runat="server" /> 

<asp:TextBox ID="Email" runat="server" Visible="false"></asp:TextBox>

The OnCreatingUser event fires during the creation of the user and sets the invisible email text field in the CreateUserWizard to the username. This ensures that the requireUniqueEmail setting in the webconfig checks to make sure the email is unique in the database.

Protected Sub CreateUserWizard1_CreatingUser(ByVal sender As Object, ByVal e As LoginCancelEventArgs)
        Dim cuw As CreateUserWizard = CType(sender, CreateUserWizard)
        cuw.Email = cuw.UserName
    End Sub

The OnCreatedUser event fires right after the user is created and updates the user object email field with the username.

Protected Sub CreateUserWizard1_CreatedUser(ByVal sender As Object, ByVal e As EventArgs)
        Dim userNameTextBox As TextBox = CType(CreateUserWizardStep1.ContentTemplateContainer.FindControl("UserName"), TextBox)
        Dim user As MembershipUser = Membership.GetUser(userNameTextBox.Text)

        user.Email = user.UserName
        Membership.UpdateUser(user)
    End Sub

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