重複の可能性:
CreateUserWizard の使用時にオブジェクト参照がオブジェクトのインスタンスに設定されていないというエラーが発生する
CreateUserWizard コントロールの [次へ] ボタンをクリックすると、「オブジェクト参照がオブジェクトのインスタンスに設定されていません」というエラーが発生しました。変数を null のままにしていないことをコードで確認しましたが、それでも問題ありません。このエラーを解決しないでください。
これがエラーの原因です: 行 31: DataSource.InsertParameters.Add("UserId", UserGUID.ToString());
Source Error:
Line 29: object UserGUID = User.ProviderUserKey;
Line 30:
Line 31: DataSource.InsertParameters.Add("UserId", UserGUID.ToString());
Line 32:
Line 33: DataSource.Insert();
This is my html code file:
<form id="form1" runat="server">
<div>
<asp:CreateUserWizard ID="CreateUserWizard1" runat="server"
OnCreatedUser="CreateUserWizard1_CreatedUser" CreateUserButtonText="Next"
FinishCompleteButtonText="Create User" Height="330px"
Width="512px">
<WizardSteps>
<asp:CreateUserWizardStep ID="CreateUserWizardStep2" runat="server" >
<ContentTemplate>
<table>
<tr>
<th>User Information</th>
</tr>
<tr>
<td>Username:</td>
<td class="style2">
<asp:TextBox runat="server" ID="UserName" />
<asp:RequiredFieldValidator runat="server" ID="RequiredFieldValidator9" ControlToValidate="UserName"
ErrorMessage="Username is required." />
</td>
</tr>
<tr>
<td>Password:</td>
<td class="style2">
<asp:TextBox runat="server" ID="Password" TextMode="Password" />
<asp:RequiredFieldValidator runat="server" ID="RequiredFieldValidator10" ControlToValidate="Password"
ErrorMessage="Password is required." />
</td>
</tr>
<tr>
<td>Confirm Password:</td>
<td class="style2">
<asp:TextBox runat="server" ID="ConfirmPassword" TextMode="Password" />
<asp:RequiredFieldValidator runat="server" ID="RequiredFieldValidator13" ControlToValidate="ConfirmPassword"
ErrorMessage="Confirm Password is required." />
</td>
</tr>
<tr>
<td>
Email:</td>
<td class="style2">
<asp:TextBox runat="server" ID="Email" />
<asp:RequiredFieldValidator ID="RequiredFieldValidator16" runat="server" ControlToValidate="Email"
ErrorMessage="Email required."></asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td>Question:</td>
<td class="style2">
<asp:TextBox runat="server" ID="Question" />
<asp:RequiredFieldValidator runat="server" ID="RequiredFieldValidator12" ControlToValidate="Question"
ErrorMessage="Question is required." />
</td>
</tr>
<tr>
<td>Answer:</td>
<td class="style2">
<asp:TextBox runat="server" ID="Answer" />
<asp:RequiredFieldValidator runat="server" ID="RequiredFieldValidator14" ControlToValidate="Answer"
ErrorMessage="Answer is required." />
</td>
</tr>
<tr>
<td colspan="2">
<asp:CompareValidator ID="PasswordCompare" runat="server" ControlToCompare="Password"
ControlToValidate="ConfirmPassword" Display="Dynamic" ErrorMessage="The Password and Confirmation Password must match."></asp:CompareValidator>
</td>
</tr>
<tr>
<td colspan="2">
<asp:Literal ID="ErrorMessage" runat="server" EnableViewState="False"></asp:Literal>
</td>
</tr>
</table>
</ContentTemplate>
</asp:CreateUserWizardStep>
<asp:WizardStep ID="CreateUserWizardStep0" runat="server" Title="User Details">
<table>
<tr>
<th>Billing Information</th>
</tr>
<tr>
<td>Name:</td>
<td class="style1">
<asp:TextBox runat="server" ID="CustName" />
<asp:RequiredFieldValidator runat="server" ID="RequiredFieldValidator18" ControlToValidate="CustName"
ErrorMessage="Name is required." />
</td>
</tr>
<tr>
<td>Contact Number:</td>
<td class="style1">
<asp:TextBox runat="server" ID="CustNum" />
<asp:RequiredFieldValidator runat="server" ID="RequiredFieldValidator19" ControlToValidate="CustNum"
ErrorMessage="Contact num is required." />
</td>
</tr>
<tr>
<td>Role:</td>
<td class="style1">
<asp:DropDownList ID="CustRole" runat="server" AutoPostBack="True" Height="16px"
Width="123px">
<asp:ListItem></asp:ListItem>
<asp:ListItem>Bride</asp:ListItem>
<asp:ListItem>Groom</asp:ListItem>
</asp:DropDownList>
<asp:RequiredFieldValidator runat="server" ID="RequiredFieldValidator20" ControlToValidate="CustRole"
ErrorMessage="Role is required." />
</td>
</tr>
<tr>
<td>
Status:</td>
<td class="style1">
<asp:DropDownList ID="CustStatus" runat="server" AutoPostBack="True"
Height="17px" Width="121px">
<asp:ListItem></asp:ListItem>
<asp:ListItem>Status A</asp:ListItem>
<asp:ListItem>Status B</asp:ListItem>
<asp:ListItem>Status C</asp:ListItem>
</asp:DropDownList>
<asp:RequiredFieldValidator ID="RequiredFieldValidator15" runat="server" ControlToValidate="CustStatus"
ErrorMessage="Status is required."/>
</td>
</tr>
<tr>
<td>
</td>
<td class="style1">
</td>
</tr>
<tr>
<td>
Partner's Name:</td>
<td class="style1">
<asp:TextBox runat="server" ID="PName" />
<asp:RequiredFieldValidator runat="server" ID="RequiredFieldValidator5" ControlToValidate="PName"
ErrorMessage="PName is required." />
</td>
</tr>
<tr>
<td>
Partner Email:</td>
<td class="style1">
<asp:TextBox runat="server" ID="PEmail" />
</td>
</tr>
<tr>
<td>
PRole:
</td>
<td class="style1">
<asp:DropDownList ID="PRole" runat="server" AutoPostBack="True" Height="16px"
Width="123px">
<asp:ListItem></asp:ListItem>
<asp:ListItem>Bride</asp:ListItem>
<asp:ListItem>Groom</asp:ListItem>
</asp:DropDownList>
<asp:RequiredFieldValidator runat="server" ID="RequiredFieldValidator7" ControlToValidate="PRole"
ErrorMessage="PRole is required." />
</td>
</tr>
<tr>
<td>
Wed Date:
</td>
<td class="style1">
<cc1:DatePicker ID="WedDate" runat="server" CalendarDate=""
TextCssClass="" />
<asp:RequiredFieldValidator ID="RequiredFieldValidator17" runat="server" ControlToValidate="WedDate"
ErrorMessage="Wedding date required"/>
</td>
</tr>
</table>
</asp:WizardStep>
<asp:CompleteWizardStep ID="CompleteWizardStep1" runat="server">
<ContentTemplate>
<table>
<tr>
<td align="center" colspan="2">
Complete</td>
</tr>
<tr>
<td>
Your account has been successfully created.</td>
</tr>
<tr>
<td align="right" colspan="2">
<asp:Button ID="ContinueButton" runat="server" CausesValidation="False"
CommandName="Continue" Text="Continue" ValidationGroup="CreateUserWizard1" />
</td>
</tr>
</table>
<asp:SqlDataSource ID="InsertExtraInfo" runat="server" ConnectionString="<%$ ConnectionStrings:ASPNETDBConnectionString1 %>"
InsertCommand="INSERT INTO [UserDetails] ([UserId], [CustName], [CustNum], [CustRole], [CustStatus], [PName], [PEmail], [PRole], [WedDate]) VALUES (@UserId, @CustName, @CustNum, @CustRole, @CustStatus, @PName, @PEmail, @PRole, @WedDate)"
ProviderName="<%$ ConnectionStrings:ASPNETDBConnectionString1.ProviderName %>">
<InsertParameters>
<asp:ControlParameter Name="CustName" Type="String" ControlID="CustName" PropertyName="Text" />
<asp:ControlParameter Name="CustNum" Type="String" ControlID="CustNum" PropertyName="Text" />
<asp:ControlParameter Name="CustRole" Type="String" ControlID="CustRole" PropertyName="Text" />
<asp:ControlParameter Name="CustStatus" Type="String" ControlID="CustStatus" PropertyName="Text" />
<asp:ControlParameter Name="PName" Type="String" ControlID="PName" PropertyName="Text" />
<asp:ControlParameter Name="PEmail" Type="String" ControlID="PEmail" PropertyName="Text" />
<asp:ControlParameter Name="PRole" Type="String" ControlID="PRole" PropertyName="Text" />
<asp:ControlParameter Name="WedDate" Type="String" ControlID="WedDate" PropertyName="Text" />
</InsertParameters>
</asp:SqlDataSource>
</ContentTemplate>
</asp:CompleteWizardStep>
</WizardSteps>
</asp:CreateUserWizard>
<br />
</div>
This is the code behind:
using System;
using System.Data;
using System.Configuration;
using System.Web.Security;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class Register : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void CreateUserWizard1_CreatedUser(object sender, EventArgs e)
{
TextBox UserName=
(TextBox)CreateUserWizardStep2.ContentTemplateContainer.FindControl("UserName");
SqlDataSource DataSource =
(SqlDataSource)CreateUserWizardStep2.ContentTemplateContainer.FindControl("InsertExtraInfo");
MembershipUser User = Membership.GetUser(UserName.Text);
object UserGUID = User.ProviderUserKey;
DataSource.InsertParameters.Add("UserId", UserGUID.ToString()); //the error lies at here
DataSource.Insert();
}
}