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i have 2 pages reg.aspx and home.aspx where in home.aspx page i have reg and signin link buttons and reg.aspx has a wizard control(consists of registration form, login form and forgot password form).

when i click on signin button it has to redirect to reg.aspx and in the wizard control step to has to be displayed. similarly with the register button.

i am trying to use previouspage property but i am getting error
System.NullReferenceException: Object reference not set to an instance of an object

please help me out.

thanks in advance

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Last Post by anupama96
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Hi

You should post some of your code, you're refering to an object that the code does not know exists or understands. Posting code samples inside the "CODE" "/CODE" tags will help others see what you are doing and maybe identify where it is going wrong. Have you tried going through the code in a step by step debug?

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You are contributing the following post:
reg.aspx

<asp:Wizard ID="Wizard1" runat="server" CancelButtonText="" CancelButtonType="Link"
DisplaySideBar="False" FinishCompleteButtonText="" FinishCompleteButtonType="Link"
FinishPreviousButtonText="" FinishPreviousButtonType="Link" StartNextButtonText=""
StartNextButtonType="Link" StepNextButtonText="" StepNextButtonType="Link" StepPreviousButtonText=""
StepPreviousButtonType="Link"
Style="width: 100%; vertical-align: top; text-align: center;" Visible="False"
Width="1000px" ActiveStepIndex="0">
<WizardSteps>
<asp:WizardStep ID="WizardStep1" runat="server" Title="Registration">
&nbsp;
<table align="center" cellpadding="0" cellspacing="0" style="width: 700px">
<tr>
<td>
<table align="center" style="width: 600px">
<tr>
<td colspan="3" align="left">
<asp:Label ID="Label12" runat="server" BackColor="#999999" Font-Bold="True"
Font-Names="Calibri" ForeColor="White" Text="LOGIN DETAILS"></asp:Label>
</td>

</tr>
<tr>
<td align="right" width="200">
<asp:Label ID="Label13" runat="server" Font-Bold="True" Font-Names="Calibri"
Text="UserName" Width="150px"></asp:Label>
</td>
<td width="15">
<strong>:</strong></td>
<td align="left" width="400">
<asp:TextBox ID="TextBox1" runat="server" Width="200px"></asp:TextBox>
</td>
</tr>
<tr>
<td align="right">
<asp:Label ID="Label14" runat="server" Font-Bold="True" Font-Names="Calibri"
Text="Password" Width="150px"></asp:Label>
</td>
<td style="width: 14px">
<strong>:</strong></td>
<td align="left">
<asp:TextBox ID="TextBox2" runat="server" Width="200px" TextMode="Password"></asp:TextBox>
</td>
</tr>
<tr>
<td align="right">
<asp:Label ID="Label15" runat="server" Font-Bold="True" Font-Names="Calibri"
Text="Confirm Password" Width="150px"></asp:Label>
</td>
<td style="width: 14px">
<strong>:</strong></td>
<td align="left">
<asp:TextBox ID="TextBox3" runat="server" Width="200px" TextMode="Password"></asp:TextBox>
</td>
</tr>
<tr>
<td align="left" colspan="3">
<asp:Label ID="Label16" runat="server" BackColor="Gray" Font-Bold="True"
Font-Names="Calibri" ForeColor="White" Text="PERSONAL INFORMATION"></asp:Label>
</td>

</tr>
<tr>
<td align="right">
<asp:Label ID="Label17" runat="server" Font-Bold="True" Font-Names="Calibri"
Text="First Name" Width="150px"></asp:Label>
</td>
<td style="width: 14px">
<strong>:</strong></td>
<td align="left">
<asp:TextBox ID="TextBox4" runat="server" Width="200px"></asp:TextBox>
<asp:Label ID="Label18" runat="server" Font-Bold="True" Font-Names="Calibri"
Font-Size="Small" ForeColor="Red" Text="( As Per Passport )"></asp:Label>
</td>
</tr>
<tr>
<td align="right">
<asp:Label ID="Label19" runat="server" Font-Bold="True" Font-Names="Calibri"
Text="Middle Name" Width="150px"></asp:Label>
</td>
<td style="width: 14px">
<strong>:</strong></td>
<td align="left">
<asp:TextBox ID="TextBox5" runat="server" Width="200px"></asp:TextBox>
</td>
</tr>
<tr>
<td align="right">
<asp:Label ID="Label20" runat="server" Font-Bold="True" Font-Names="Calibri"
Text="Last Name" Width="150px"></asp:Label>
</td>
<td style="width: 14px">
<strong>:</strong></td>
<td align="left">
<asp:TextBox ID="TextBox6" runat="server" Width="200px"></asp:TextBox>
</td>
</tr>
<tr>
<td align="right">
<asp:Label ID="Label23" runat="server" Font-Bold="True" Font-Names="Calibri"
Text="Gender" Width="150px"></asp:Label>
</td>
<td style="width: 14px">
<strong>:</strong></td>
<td align="left">
<asp:RadioButtonList ID="RadioButtonList1" runat="server" Font-Bold="True"
Font-Names="Calibri" Width="200px">
<asp:ListItem>Female</asp:ListItem>
<asp:ListItem>Male</asp:ListItem>
</asp:RadioButtonList>
</td>
</tr>
<tr>
<td align="right">
<asp:Label ID="Label21" runat="server" Font-Bold="True" Font-Names="Calibri"
Text="Address" Width="150px"></asp:Label>
</td>
<td style="width: 14px">
<strong>:</strong></td>
<td align="left">
<asp:TextBox ID="TextBox7" runat="server" TextMode="MultiLine" Width="200px"></asp:TextBox>
</td>
</tr>
<tr>
<td align="right">
<asp:Label ID="Label22" runat="server" Font-Bold="True" Font-Names="Calibri"
Text="Email Id" Width="150px"></asp:Label>
</td>
<td style="width: 14px">
<strong>:</strong></td>
<td align="left">
<asp:TextBox ID="TextBox8" runat="server" Width="200px"></asp:TextBox>
</td>
</tr>
<tr>
<td align="right">
<asp:Label ID="Label24" runat="server" Font-Bold="True" Font-Names="Calibri"
Text="Phone No" Width="150px"></asp:Label>
</td>
<td style="width: 14px">
<strong>:</strong></td>
<td align="left">
<asp:TextBox ID="TextBox9" runat="server" Width="200px"></asp:TextBox>
</td>
</tr>
<tr>
<td align="right">
<asp:Label ID="Label25" runat="server" Font-Bold="True" Font-Names="Calibri"
Text="Purpose" Width="150px"></asp:Label>
</td>
<td style="width: 14px">
<strong>:</strong></td>
<td align="left">
<aspropDownList ID="DropDownList1" runat="server" Font-Bold="True"
Font-Names="Calibri" Width="200px">
<asp:ListItem>- Select -</asp:ListItem>
<asp:ListItem>Admissions</asp:ListItem>
<asp:ListItem>Training</asp:ListItem>
<asp:ListItem>Careers</asp:ListItem>
<asp:ListItem>Company Employer</asp:ListItem>
</aspropDownList>
</td>
</tr>
<tr>
<td align="right">
<asp:Button ID="Button4" runat="server" Font-Bold="True" Font-Names="Calibri"
Text="SUBMIT" />
</td>
<td style="width: 14px">
&nbsp;</td>
<td align="left">
<asp:Button ID="Button5" runat="server" Font-Bold="True" Font-Names="Calibri"
Text="CANCEL" />
</td>
</tr>
</table>
</td>
</tr>
</table>
</asp:WizardStep>
<asp:WizardStep ID="WizardStep2" runat="server" Title="Forgot Password">
<table align="center" cellpadding="0" cellspacing="0" style="width: 700px">
<tr>
<td>
&nbsp;</td>
<td>
<aspasswordRecovery ID="PasswordRecovery1" runat="server">
</aspasswordRecovery>
</td>
<td>
&nbsp;</td>
</tr>
</table>
</asp:WizardStep>
<asp:WizardStep ID="WizardStep3" runat="server" Title="Login">
<table border="0" cellpadding="0" cellspacing="0" style="height: 127px;"
width="250">
<tr>
<td align="center" class="style2" colspan="4">
&nbsp;</td>
</tr>
<tr>
<td align="center" class="style2" colspan="4">
&nbsp;
<asp:Label ID="Label5" runat="server" Font-Bold="True" Font-Names="Calibri"
Text="Login" Width="175px"></asp:Label>
</td>
</tr>
<tr>
<td align="right" class="style2" colspan="2" width="75">
<asp:Label ID="Label1" runat="server" Font-Bold="True" Font-Names="Calibri"
Text="UserName" Width="75px"></asp:Label>
</td>
<td width="10">
<b style="width: 10px">:</b>&nbsp;
</td>
<td width="165">
<asp:TextBox ID="uname_txt" runat="server" Font-Names="Comic Sans MS"
Width="100px"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server"
ControlToValidate="uname_txt" ErrorMessage="Enter UserName" Font-Bold="True"
Font-Names="Calibri" Font-Size="XX-Small" Width="65px" ForeColor="Red"></asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td align="right" class="style2" colspan="2">
<asp:Label ID="Label2" runat="server" Font-Bold="True" Font-Names="Calibri"
Text="Password"></asp:Label>
</td>
<td>
<b>:</b></td>
<td>
<asp:TextBox ID="pwd_txt" runat="server" Font-Names="Comic Sans MS"
TextMode="Password" Width="100px"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server"
ControlToValidate="pwd_txt" ErrorMessage="Enter Password" Font-Bold="True"
Font-Names="Calibri" Font-Size="XX-Small" Width="65px" ForeColor="Red"></asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td align="right" class="style2" colspan="2">
&nbsp;
</td>
<td>
&nbsp;
</td>
<td>
&nbsp;
</td>
</tr>
<tr>
<td class="style2">
&nbsp;
</td>
<td class="style2" width="70">
<asp:Button ID="Button1" runat="server" Font-Bold="True" Font-Names="Calibri"
Text="SIGN IN" Width="70px" />
</td>
<td class="style2">
&nbsp;</td>
<td>
<asp:Button ID="Button3" runat="server" Font-Bold="True" Font-Names="Calibri"
PostBackUrl="~/Registration.aspx" Text="REGISTER" />
</td>
</tr>
<tr>
<td align="center" class="style2" colspan="4">
<asp:HyperLink ID="HyperLink1" runat="server" Font-Bold="False"
Font-Names="Calibri" ForeColor="Red">Forgot Password ?</asp:HyperLink>
</td>
</tr>
<tr>
<td align="left" class="style2" colspan="4">
&nbsp;</td>
</tr>
</table>
<br />
</asp:WizardStep>

</WizardSteps>
</asp:Wizard>

home.aspx

<%@ Page Title="" Language="VB" MasterPageFile="~/site.master" AutoEventWireup="false" CodeFile="Home1.aspx.vb" Inherits="Home1" %>
<%@ PreviousPageType VirtualPath="reg.aspx" %>


<asp:Content ID="Content1" ContentPlaceHolderID="cp3" Runat="Server">

</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="cp2" Runat="Server">
<table align="left" cellpadding="0" cellspacing="0" class="style3" width="1000">

<tr>
<td align="right">
&nbsp;</td>
<td>&nbsp;</td>
<td width="100">&nbsp;</td>
<td align="center" width="100">&nbsp;</td>
<td align="center" width="100">&nbsp;</td>
</tr>

<tr>
<td align="right">
</td>
<td></td>
<td height="25" width="100"></td>
<td align="center" height="20"
style="background-image: url('Images/gallerybuttons_21.jpg'); background-repeat: no-repeat"
width="100">
<asp:LinkButton ID="btn_signin" runat="server" Font-Bold="True"
Font-Names="Calibri" Font-Size="Medium" Font-Underline="False"
ForeColor="White" PostBackUrl="~/Registration.aspx">Sign In</asp:LinkButton>
</td>
<td align="center"
style="background-image: url('Images/gallerybuttons_21.jpg'); background-repeat: no-repeat"
width="100">
<asp:LinkButton ID="btn_register" runat="server" Font-Bold="True"
Font-Names="Calibri" Font-Underline="False" ForeColor="White"
PostBackUrl="~/Registration.aspx">Register</asp:LinkButton>
</td>
</tr>
<tr>
<td class="style4">&nbsp;
</td>
<td align="left" valign="middle">
<asp:Image ID="Image3" runat="server" Height="30px"
ImageUrl="~/Images/ourcompany.gif" Width="250px" />
</td>
<td>&nbsp;</td>
</tr>
<tr>
<td class="style4" width="200">
&nbsp;</td>
<td colspan="2" rowspan="2">
<asp:Label ID="Label8" runat="server" Font-Names="Calibri"

Text="<p>Edutech Systems, Inc. is dedicated to providing its customers with the best possible service in selecting universities, training, recruiting and hiring them to fulfill the customer needs.</p><p>Our recruiting experts understand the intricacies of a correct match, and make sure each candidate fits the needs, expectations, and company culture.</p><p>We are in tune with the current needs of the market and have the expertise to technically screen our candidates to acquire the right jobs in the corporate market.</p>"
Width="550px" ForeColor="White"></asp:Label>
</td>
</tr>
<tr>
<td height="100" class="style4">&nbsp;
</td>
</tr>
</table>
</asp:Content>

home.vb

Public Sub btn_signin_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btn_signin.Click


Dim wz1 As New Wizard
wz1 = PreviousPage.FindControl("Wizard1")
wz1.Visible = True
wz1.ActiveStepIndex = 2



End Sub

Edited by mike_2000_17: Fixed formatting

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