问题
I am trying to edit and update a selected users details, following the tutorial http://www.4guysfromrolla.com/articles/052307-1.aspx
I get the following errors in the Error List in VS 2010:
Error 6 'Comment' is not a member of 'System.Security.Principal.IPrincipal'. C:\projects\FPOS_v2\FamilyAdmin\edit_user.aspx.vb 21 9 C:\projects\FPOS_v2\
Error 5 'Email' is not a member of 'System.Security.Principal.IPrincipal'. C:\projects\FPOS_v2\FamilyAdmin\edit_user.aspx.vb 20 9 C:\projects\FPOS_v2\
Error 2 'FamilyAdmin_edit_user.Private Sub DeleteUser(sender As Object, e As System.EventArgs)' is not accessible in this context because it is 'Private'. C:\projects\FPOS_v2\FamilyAdmin\edit_user.aspx 140
Error 1 'FamilyAdmin_edit_user.Private Sub UnlockUser(sender As Object, e As System.EventArgs)' is not accessible in this context because it is 'Private'. C:\projects\FPOS_v2\FamilyAdmin\edit_user.aspx 138
Error 7 'IsApproved' is not a member of 'System.Security.Principal.IPrincipal'. C:\projects\FPOS_v2\FamilyAdmin\edit_user.aspx.vb 22 9 C:\projects\FPOS_v2\
Error 8 'UnlockUser' is not a member of 'System.Security.Principal.IPrincipal'. C:\projects\FPOS_v2\FamilyAdmin\edit_user.aspx.vb 88 9 C:\projects\FPOS_v2\
Error 4 Property 'User' is 'ReadOnly'. C:\projects\FPOS_v2\FamilyAdmin\edit_user.aspx.vb 11 9 C:\projects\FPOS_v2\
The code for the edit_user.aspx is:
<table class="webparts">
<tr>
<th>User Information</th>
</tr>
<tr>
<td class="details" valign="top">
<h3>Roles:</h3>
<asp:CheckBoxList ID="UserRoles" runat="server" />
<h3>Main Info:</h3>
<asp:DetailsView AutoGenerateRows="False" DataSourceID="MemberData"
ID="UserInfo" runat="server" OnItemUpdating="UserInfo_ItemUpdating"
>
<Fields>
<asp:BoundField DataField="UserName" HeaderText="User Name" ReadOnly="True" HeaderStyle-CssClass="detailheader" ItemStyle-CssClass="detailitem">
</asp:BoundField>
<asp:BoundField DataField="Email" HeaderText="Email" HeaderStyle-CssClass="detailheader" ItemStyle-CssClass="detailitem"></asp:BoundField>
<asp:BoundField DataField="Comment" HeaderText="Comment" HeaderStyle-CssClass="detailheader" ItemStyle-CssClass="detailitem"></asp:BoundField>
<asp:CheckBoxField DataField="IsApproved" HeaderText="Active User" HeaderStyle-CssClass="detailheader" ItemStyle-CssClass="detailitem" />
<asp:CheckBoxField DataField="IsLockedOut" HeaderText="Is Locked Out" ReadOnly="true" HeaderStyle-CssClass="detailheader" ItemStyle-CssClass="detailitem" />
<asp:CheckBoxField DataField="IsOnline" HeaderText="Is Online" ReadOnly="True" HeaderStyle-CssClass="detailheader" ItemStyle-CssClass="detailitem" />
<asp:BoundField DataField="CreationDate" HeaderText="CreationDate" ReadOnly="True"
HeaderStyle-CssClass="detailheader" ItemStyle-CssClass="detailitem"></asp:BoundField>
<asp:BoundField DataField="LastActivityDate" HeaderText="LastActivityDate" ReadOnly="True" HeaderStyle-CssClass="detailheader" ItemStyle-CssClass="detailitem">
</asp:BoundField>
<asp:BoundField DataField="LastLoginDate" HeaderText="LastLoginDate" ReadOnly="True" HeaderStyle-CssClass="detailheader" ItemStyle-CssClass="detailitem">
</asp:BoundField>
<asp:BoundField DataField="LastLockoutDate" HeaderText="LastLockoutDate" ReadOnly="True" HeaderStyle-CssClass="detailheader" ItemStyle-CssClass="detailitem"></asp:BoundField>
<asp:BoundField DataField="LastPasswordChangedDate" HeaderText="LastPasswordChangedDate"
ReadOnly="True" HeaderStyle-CssClass="detailheader" ItemStyle-CssClass="detailitem"></asp:BoundField>
<asp:CommandField ButtonType="button" ShowEditButton="true" EditText="Edit User Info" />
</Fields>
</asp:DetailsView>
<div class="alert" style="padding: 5px;">
<asp:Literal ID="UserUpdateMessage" runat="server"> </asp:Literal>
</div>
<div style="text-align: right; width: 100%; margin: 20px 0px;">
<asp:Button ID="Button1" runat="server" Text="Unlock User" OnClick="UnlockUser" OnClientClick="return confirm('Click OK to unlock this user.')" />
<asp:Button ID="Button2" runat="server" Text="Delete User" OnClick="DeleteUser" OnClientClick="return confirm('Are Your Sure?')" />
</div>
<asp:ObjectDataSource ID="MemberData" runat="server" DataObjectTypeName="System.Web.Security.MembershipUser" SelectMethod="GetUser" UpdateMethod="UpdateUser" TypeName="System.Web.Security.Membership">
<SelectParameters>
<asp:QueryStringParameter Name="username" QueryStringField="username" DefaultValue="zora" />
</SelectParameters>
</asp:ObjectDataSource>
</td>
</tr></table>
The code for the edit_user.aspx.vb is which is where I am getting the error:
Partial Class FamilyAdmin_edit_user
Inherits System.Web.UI.Page
Private username As String
Private Sub Page_Load()
username = Request.QueryString("username")
If username Is Nothing OrElse username = "" Then
Response.Redirect("users.aspx")
End If
User = Membership.GetUser(username)
UserUpdateMessage.Text = ""
End Sub
Protected Sub UserInfo_ItemUpdating(ByVal sender As Object, ByVal e As DetailsViewUpdateEventArgs)
'Need to handle the update manually because MembershipUser does not have a
'parameterless constructor
User.Email = DirectCast(e.NewValues(0), String)
User.Comment = DirectCast(e.NewValues(1), String)
User.IsApproved = CBool(e.NewValues(2))
Try
' Update user info:
Membership.UpdateUser(User)
' Update user roles:
UpdateUserRoles()
UserUpdateMessage.Text = "Update Successful."
e.Cancel = True
UserInfo.ChangeMode(DetailsViewMode.[ReadOnly])
Catch ex As Exception
UserUpdateMessage.Text = "Update Failed: " + ex.Message
e.Cancel = True
UserInfo.ChangeMode(DetailsViewMode.[ReadOnly])
End Try
End Sub
Private Sub Page_PreRender()
' Load the User Roles into checkboxes.
UserRoles.DataSource = Roles.GetAllRoles()
UserRoles.DataBind()
' Disable checkboxes if appropriate:
If UserInfo.CurrentMode <> DetailsViewMode.Edit Then
For Each checkbox As ListItem In UserRoles.Items
checkbox.Enabled = False
Next
End If
' Bind these checkboxes to the User's own set of roles.
Dim userRoles__1 As String() = Roles.GetRolesForUser(username)
For Each role As String In userRoles__1
Dim checkbox As ListItem = UserRoles.Items.FindByValue(role)
checkbox.Selected = True
Next
End Sub
Private Sub UpdateUserRoles()
For Each rolebox As ListItem In UserRoles.Items
If rolebox.Selected Then
If Not Roles.IsUserInRole(username, rolebox.Text) Then
Roles.AddUserToRole(username, rolebox.Text)
End If
Else
If Roles.IsUserInRole(username, rolebox.Text) Then
Roles.RemoveUserFromRole(username, rolebox.Text)
End If
End If
Next
End Sub
Private Sub DeleteUser(ByVal sender As Object, ByVal e As EventArgs)
'Membership.DeleteUser(username, false); // DC: My apps will NEVER delete the related data.
Membership.DeleteUser(username, True)
' DC: except during testing, of course!
Response.Redirect("manage_members.aspx")
End Sub
Private Sub UnlockUser(ByVal sender As Object, ByVal e As EventArgs)
' Dan Clem, added 5/30/2007 post-live upgrade.
' Unlock the user.
User.UnlockUser()
' DataBind the GridView to reflect same.
UserInfo.DataBind()
End Sub
End Class
The problem is with the User. But I don't know how to sort this as im new to all this.
Any help would be greatly appreciated..
Thanks
回答1:
Because you forgot to define MembershipUser i.e.
Partial Class FamilyAdmin_edit_user
Inherits System.Web.UI.Page
Private username As String
Dim User As MembershipUser
Private Sub Page_Load()
.....
Currently it is considering User as in 'System.Security.Principal.IPrincipal' and not MembershipUser.
来源：https://stackoverflow.com/questions/5059125/getting-error-when-editing-the-user-details