Adding roles to the 'CreateUserWizard'

Add this to create user table

<tr>

<td align="right">

 <asp:Label ID="RolesLabel" runat="server" Text="Roles" AssociatedControlID="DropDownListRoles"></asp:Label>

 </td>

 <td>

 <asp:DropDownList ID="DropDownListRoles" runat="server">

 </asp:DropDownList>

 </td>

 </tr>

And then this to code

protected void Page_Load(object sender, EventArgs e)

    {

        DropDownList roleDropDownList = (DropDownList)CreateUserWizard1.CreateUserStep.ContentTemplateContainer.FindControl("DropDownListRoles");

        roleDropDownList.DataSource = Roles.GetAllRoles();

        roleDropDownList.DataBind();

    }

    protected void CreateUserWizard1_CreatedUser(object sender, EventArgs e)

    {

        DropDownList roleDropDownList = (DropDownList)CreateUserWizard1.CreateUserStep.ContentTemplateContainer.FindControl("DropDownListRoles");

        Roles.AddUserToRole(CreateUserWizard1.UserName, roleDropDownList.SelectedValue);

    }

Disable Automatic Login After Registration

The CreateUserWizard has a property called LoginCreatedUser. Just change that to false (Default=true).

ASP.net - Validation of viewstate MAC failed

This error is caused when your server is shared

<system.web> 

<machineKey validationKey="{generatedkey}" validation="SHA1" decryption="AES" />

</system.web>

you this url to generate a machineKey

http://www.dcense.com/ASPNETMachineKey.aspx

WebResource.axd Error - "handler must be registered"

In some cases in appears due to corrupt installation of asp.net 4. Just add this

<system.webServer>
   <handlers>
      <add name="WebResource.axd" type="System.Web.Handlers.AssemblyResourceLoader" path="WebResource.axd" verb="GET,HEAD,POST,DEBUG" />
   </handlers>
</system.webServer>

Off you go!

How to check a Constraint Exception in ASP.net (C#)

try

            {

                //statements

            }

            catch (ConstraintException cex)

            {

                throw;

            }

            catch (Exception ex)

            {

                throw;

            }

            /*

             * order matters

            */