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Hi , i have used the asp.net membership wizzard to create new users for my website. I have attempted to customised the wizzard by adding a dropdown list which allows for the user role to be selected before creating the new user. The error message i get is

Server Error in '/Project' Application.
--------------------------------------------------------------------------------

Object reference not set to an instance of an object.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:


Line 22: //TextBox UserNameTextBox = (TextBox)CreateUserWizard1.FindControl("UserName");
Line 23:
Line 24: Roles.AddUserToRole(CreateUserWizard1.UserName, ddl.SelectedValue.ToString());
Line 25: }
Line 26:


This makes me think the findcontrol method is not working for the drop downlist. I have attatched the cs and aspx code below

Here is my code

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Security;


public partial class Accounts_Admin_adduser : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
   
    protected void CreateUserWizard1_CreatedUser1(object sender, EventArgs e)
    {
       
       DropDownList ddl = (DropDownList)CreateUserWizard1.FindControl("ddl_roles");
     

        Roles.AddUserToRole(CreateUserWizard1.UserName, ddl.SelectedValue.ToString());
     }   
        
    
    protected void ContinueButton_Click(object sender, EventArgs e)
    {
        Response.Redirect("~/Accounts/User/menu.aspx");
    }
    

   
}

aspx code

<%@ Page Title="" Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="adduser.aspx.cs" Inherits="Accounts_Admin_adduser" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
    <asp:CreateUserWizard ID="CreateUserWizard1" runat="server" 
        oncreateduser="CreateUserWizard1_CreatedUser1">
        <StartNavigationTemplate>
            <asp:Button ID="StartNextButton" runat="server" CommandName="MoveNext" 
                Text="Next" />
        </StartNavigationTemplate>
        <WizardSteps>
            <asp:CreateUserWizardStep runat="server">
                <ContentTemplate>
                    <table border="0">
                        <tr>
                            <td align="center" colspan="2">
                                Sign Up for Your New Account</td>
                        </tr>
                        <tr>
                            <td align="right">
                                <asp:Label ID="UserNameLabel" runat="server" AssociatedControlID="UserName">User Name:</asp:Label>
                            </td>
                            <td>
                                <asp:TextBox ID="UserName" runat="server"></asp:TextBox>
                                <asp:RequiredFieldValidator ID="UserNameRequired" runat="server" 
                                    ControlToValidate="UserName" ErrorMessage="User Name is required." 
                                    ToolTip="User Name is required." ValidationGroup="CreateUserWizard1">*</asp:RequiredFieldValidator>
                            </td>
                        </tr>
                        <tr>
                            <td align="right">
                                <asp:Label ID="PasswordLabel" runat="server" AssociatedControlID="Password">Password:</asp:Label>
                            </td>
                            <td>
                                <asp:TextBox ID="Password" runat="server" TextMode="Password"></asp:TextBox>
                                <asp:RequiredFieldValidator ID="PasswordRequired" runat="server" 
                                    ControlToValidate="Password" ErrorMessage="Password is required." 
                                    ToolTip="Password is required." ValidationGroup="CreateUserWizard1">*</asp:RequiredFieldValidator>
                            </td>
                        </tr>
                        <tr>
                            <td align="right">
                                <asp:Label ID="ConfirmPasswordLabel" runat="server" 
                                    AssociatedControlID="ConfirmPassword">Confirm Password:</asp:Label>
                            </td>
                            <td>
                                <asp:TextBox ID="ConfirmPassword" runat="server" TextMode="Password"></asp:TextBox>
                                <asp:RequiredFieldValidator ID="ConfirmPasswordRequired" runat="server" 
                                    ControlToValidate="ConfirmPassword" 
                                    ErrorMessage="Confirm Password is required." 
                                    ToolTip="Confirm Password is required." ValidationGroup="CreateUserWizard1">*</asp:RequiredFieldValidator>
                            </td>
                        </tr>
                        <tr>
                            <td align="right">
                                <asp:Label ID="EmailLabel" runat="server" AssociatedControlID="Email">E-mail:</asp:Label>
                            </td>
                            <td>
                                <asp:TextBox ID="Email" runat="server"></asp:TextBox>
                                <asp:RequiredFieldValidator ID="EmailRequired" runat="server" 
                                    ControlToValidate="Email" ErrorMessage="E-mail is required." 
                                    ToolTip="E-mail is required." ValidationGroup="CreateUserWizard1">*</asp:RequiredFieldValidator>
                            </td>
                        </tr>
                        <tr>
                            <td align="right">
                                <asp:Label ID="QuestionLabel" runat="server" AssociatedControlID="Question">Security Question:</asp:Label>
                            </td>
                            <td>
                                <asp:TextBox ID="Question" runat="server"></asp:TextBox>
                                <asp:RequiredFieldValidator ID="QuestionRequired" runat="server" 
                                    ControlToValidate="Question" ErrorMessage="Security question is required." 
                                    ToolTip="Security question is required." ValidationGroup="CreateUserWizard1">*</asp:RequiredFieldValidator>
                            </td>
                        </tr>
                        <tr>
                            <td align="right">
                                <asp:Label ID="AnswerLabel" runat="server" AssociatedControlID="Answer">Security Answer:</asp:Label>
                            </td>
                            <td>
                                <asp:TextBox ID="Answer" runat="server"></asp:TextBox>
                                <asp:RequiredFieldValidator ID="AnswerRequired" runat="server" 
                                    ControlToValidate="Answer" ErrorMessage="Security answer is required." 
                                    ToolTip="Security answer is required." ValidationGroup="CreateUserWizard1">*</asp:RequiredFieldValidator>
                            </td>
                        </tr>
                        <tr>
                            <td align="center" colspan="2">
                                <asp:CompareValidator ID="PasswordCompare" runat="server" 
                                    ControlToCompare="Password" ControlToValidate="ConfirmPassword" 
                                    Display="Dynamic" 
                                    ErrorMessage="The Password and Confirmation Password must match." 
                                    ValidationGroup="CreateUserWizard1"></asp:CompareValidator>
                            </td>
                        </tr>
                    <tr>
                   <td align="right">
                                <asp:Label ID="lbl_role" runat="server" >Select a role</asp:Label>
                            </td>
                            
                        <td>
                            <asp:DropDownList ID="ddl_roles" runat="server">
                                <asp:ListItem>User</asp:ListItem>
                                <asp:ListItem>Technician</asp:ListItem>
                                <asp:ListItem>Admin</asp:ListItem>
                            </asp:DropDownList>
                           
                        </td>
                   
                        <tr>
                            <td align="center" colspan="2" style="color:Red;">
                                <asp:Literal ID="ErrorMessage" runat="server" EnableViewState="False"></asp:Literal>
                            </td>
                        </tr>
                    </table>
                </ContentTemplate>
            </asp:CreateUserWizardStep>
            <asp:CompleteWizardStep runat="server" />
        </WizardSteps>
    </asp:CreateUserWizard>
</asp:Content>
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7 Years
Discussion Span
Last Post by textbox
0

Most likely the find control statement as I have a code example in front of me right now doing the same thing although our role is hardcoded into the add role function. Have you tried stepping through the code and seeing if the dropdownlist has a value?

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