createuserwizard nullrefrence exception

Author:cjfeng PostAt:Wed, 26 Nov 2008 07:19:45 GMT Posted In:Security

Q:Hi I am having some trouble adding custom fields to my database using the following code. When CreateUserWizard1_CreatedUser() fires my

CreateUserWizard1.CreateUserStep.ContentTemplateContainer.FindControl("FirstName") function is returning a null and I get an object refrence not set to an instance of an object error.

Please help, thanks in advance.

createaccount.aspx.vb follows

----

Imports System.Data.SqlClient

Partial Class CreateAccount

Inherits System.Web.UI.Page

Protected Sub CreateUserWizard1_CreatedUser(ByVal sender As Object, ByVal e As System.EventArgs) Handles CreateUserWizard1.CreatedUser

Dim UserNameTextBox As TextBox

Dim User As MembershipUser

Dim UserGUID As Object

UserNameTextBox = CreateUserWizardStep1.ContentTemplateContainer.FindControl("UserName")

User = Membership.GetUser(UserNameTextBox.Text)

UserGUID = User.ProviderUserKey

Using conn As SqlConnection = New SqlConnection(ConfigurationManager.ConnectionStrings("ConnectionString").ConnectionString)

Dim cmd As SqlCommand = conn.CreateCommand()

Dim FirstNameTextBox, LastNameTextBox, CityTextBox, PostcodeTextBox As TextBox

Dim SexDDL, DOBDayDDL, DOBMonthDDL, DOBYearDDL, RegionDDL, StateDDL, CountryDDL As DropDownList

FirstNameTextBox = CreateUserWizard1.CreateUserStep.ContentTemplateContainer.FindControl("FirstName")

LastNameTextBox = CreateUserWizard1.CreateUserStep.ContentTemplateContainer.FindControl("LastName")

SexDDL = CreateUserWizard1.CreateUserStep.ContentTemplateContainer.FindControl("SexDropDownList")

PostcodeTextBox = CreateUserWizard1.CreateUserStep.ContentTemplateContainer.FindControl("Postcode")

cmd.CommandText = "INSERT INTO UserInfo(UserID, Administrator, FirstName, LastName, SexMale, DOB, City, RegionID, StateID, CountryID, PostCode) VALUES (@UserID, 0, @FirstName, @LastName, @Sex, @DOB, @City, @Region, @State, @Country, @PostCode)"

cmd.Parameters.AddWithValue("@UserID", UserGUID.ToString())

cmd.Parameters.AddWithValue("@FirstName", FirstNameTextBox.Text)

cmd.Parameters.AddWithValue("@LastName", LastNameTextBox.Text)

cmd.Parameters.AddWithValue("@Sex", If(SexDDL.SelectedValue = "Male", 1, 0))

cmd.Parameters.AddWithValue("@PostCode", PostcodeTextBox.Text)

cmd.ExecuteNonQuery()

End Using

End Sub

End Class

----

createaccount.aspx follows

----

<%@ Page Language="VB" MasterPageFile="~/Site.master" AutoEventWireup="false" CodeFile="CreateAccount.aspx.vb" Inherits="CreateAccount" title="Untitled Page" EnableSessionState="False" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<title>Untitled Page</title>

</head>

<body>

<div>

Create a New Account</p>

In order to fully use this site, you'll need to first create a new user account.

Fill out the following form to create a new account.</p>

<asp:CreateUserWizard ID="CreateUserWizard1" runat="server" BackColor="#F7F6F3"

BorderColor="#E6E2D8" BorderStyle="Solid" BorderWidth="1px"

CancelDestinationPageUrl="~/Default.aspx"

ContinueDestinationPageUrl="~/Default.aspx" DisplayCancelButton="True"

Font-Names="Verdana" Font-Size="0.8em" style="font-size: medium"

EnableViewState="False">

<SideBarStyle BackColor="#5D7B9D" BorderWidth="0px" Font-Size="0.9em"

VerticalAlign="Top" />

<ContinueButtonStyle BackColor="#FFFBFF" BorderColor="#CCCCCC"

BorderStyle="Solid" BorderWidth="1px" Font-Names="Verdana"

ForeColor="#284775" />

<NavigationButtonStyle BackColor="#FFFBFF" BorderColor="#CCCCCC"

BorderStyle="Solid" BorderWidth="1px" Font-Names="Verdana"

ForeColor="#284775" />

<HeaderStyle BackColor="#5D7B9D" BorderStyle="Solid" Font-Bold="True"

Font-Size="0.9em" ForeColor="White" HorizontalAlign="Center" />

<CreateUserButtonStyle BackColor="#FFFBFF" BorderColor="#CCCCCC"

BorderStyle="Solid" BorderWidth="1px" Font-Names="Verdana"

ForeColor="#284775" />

<asp:WizardStep ID="WizardStep1" runat="server" Title="Your Details">

<tr>

<td align="center" colspan="2"

style="color:White;background-color:#5D7B9D;font-weight:bold;">

</tr>

<tr>

<asp:Label ID="FirstNameLabel" runat="server" AssociatedControlID="FirstName">First

Name:</asp:Label>

</td>

<td>

<asp:TextBox ID="FirstName" runat="server" Width="270px"></asp:TextBox>

<asp:RequiredFieldValidator ID="FirstNameRequired" runat="server"

ControlToValidate="FirstName" ErrorMessage="First Name is required."

ToolTip="First Name is required.">*</asp:RequiredFieldValidator>

</td>

</tr>

<tr>

<asp:Label ID="LastNameLabel" runat="server" AssociatedControlID="LastName">Last

Name:</asp:Label>

</td>

<td>

<asp:TextBox ID="LastName" runat="server" Width="270px"></asp:TextBox>

<asp:RequiredFieldValidator ID="LastNameRequired" runat="server"

ControlToValidate="LastName" ErrorMessage="Last Name is required."

ToolTip="Last Name is required.">*</asp:RequiredFieldValidator>

</td>

</tr>

<tr>

<asp:Label ID="SexLabel" runat="server" AssociatedControlID="SexDropDownList">Sex:</asp:Label>

</td>

<td>

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

<asp:ListItem>Select One</asp:ListItem>

<asp:ListItem>Male</asp:ListItem>

<asp:ListItem>Female</asp:ListItem>

</asp:DropDownList>

<asp:CompareValidator ID="SexCompareValidator" runat="server"

ControlToValidate="SexDropDownList" ErrorMessage="Sex is required." Operator="NotEqual"

ValueToCompare="Select One">*</asp:CompareValidator>

</td>

</tr>

<asp:Label ID="PostcodeLabel" runat="server" AssociatedControlID="Postcode">Post/ZipCode:</asp:Label>

</td>

<td>

<asp:TextBox ID="Postcode" runat="server" Width="80px"></asp:TextBox>

<asp:RequiredFieldValidator ID="PostcodeRequired" runat="server"

ControlToValidate="Postcode" ErrorMessage="Post/Zipcode is required."

ToolTip="Postcode is required.">*</asp:RequiredFieldValidator>

</td>

</tr>

</table>

</asp:WizardStep>

<asp:CreateUserWizardStep ID="CreateUserWizardStep1" runat="server" >

<tr>

<td align="center" colspan="2"

style="color:White;background-color:#5D7B9D;font-weight:bold;">

</tr>

<tr>

<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>

<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>

<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>

<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>

<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>

<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>

<asp:Label ID="ValidateLabel" runat="server" AssociatedControlID="Answer">Validate:</asp:Label>

</td>

</tr>

<tr>

<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>

<asp:Literal ID="ErrorMessage" runat="server" EnableViewState="False"></asp:Literal>

</td>

</tr>

<tr>

<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server"

ErrorMessage="Invalid E-mail address." ControlToValidate="Email"

ValidationExpression="\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*"

Display="Dynamic"></asp:RegularExpressionValidator>

</td>

</tr>

</table>

</ContentTemplate>

</asp:CreateUserWizardStep>

<asp:CompleteWizardStep ID="CompleteWizardStep1" runat="server" />

</WizardSteps>

</asp:CreateUserWizard>

</p>

</div>

</form>

</body>

</html>

Here is an example about how to dynamicly get FirstName of CreateUserWizard control, Hope it helps

Dim FirstNameTextBox As TextBox = WizardStep1.FindControl("FirstName")

Response.Write(FirstNameTextBox.Text)

Thanks XiaoYongDai, I have already tried that and although it returns a textbox control for 'FirstNameTextbox' the 'FirstNameTextbox.text' is = "".

I should mention that I am using the following for my web.config in case it effects anything.

---

<add name="AspNetSqlMembershipProvider"

connectionStringName="ConnectionString"

applicationName="/"

type="System.Web.Security.SqlMembershipProvider" />

</providers>

</membership>

<add name="AspNetSqlRoleProvider"

connectionStringName="ConnectionString"

applicationName="/"

type="System.Web.Security.SqlRoleProvider"/>

</providers>

</roleManager>

Step value cannot pass to the next step, for exampe, you can test the same code in CreateUserWizard1_ActiveStepChanged event, only the first step will return "FirstName".

My work around is store those information temporary in session, or change the order of wizard steps. Hope it helps

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