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ASP.NET 2.0中保证应用程序的安全 |
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示例
下面的例子演示了在应用程序中如何使用成员 API。
创建新用户
下面的例子演示了如何建立新的MembershipUser。示例使用了Membership.CreateUser重载，它返回一个状态参数。其它的重载也可以使用，他们会抛出异常而不是返回状态代码。请注意，在默认情况下，成员特性要求密码至少有7个字符长度，并且密码至少包含一个非数字字符。
＜script runat="server"＞
Sub btnCreate_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Dim userName As String = txtUserId.Text
"这个值式加密的或散列过，不会显示
Dim password As String = txtPassword.Text
Dim email As String = txtEmail.Text
Dim passwordQuestion As String = ddlPasswordQuestion.SelectedValue
"这个值式加密的或散列过，不会显示
Dim passwordAnswer As String = txtPasswordAnswer.Text
Dim result As MembershipCreateStatus 数据挖掘实验室
Membership.CreateUser(userName, password, email, passwordQuestion, passwordAnswer, True, result)
lblResults.Visible = True
Select Case result
Case MembershipCreateStatus.Success
txtUserId.Text = Nothing
txtPassword.Text = Nothing
txtEmail.Text = Nothing
ddlPasswordQuestion.SelectedIndex = -1
txtPasswordAnswer.Text = Nothing
lblResults.Text = "User successfully created!"
Case MembershipCreateStatus.InvalidUserName
lblResults.Text = "The username format was invalid. Please enter a different username."
Case MembershipCreateStatus.InvalidPassword
lblResults.Text = "The password was invalid: A password cannot be an empty string and must also meet the pasword strength requirements of the configured provider. Please enter a new password."
Case MembershipCreateStatus.InvalidEmail
lblResults.Text = "The email format was invalid. Please enter a different username."
Case MembershipCreateStatus.InvalidQuestion 数据挖掘研究院
lblResults.Text = "The password question format was invalid. Please enter a different question."
Case MembershipCreateStatus.InvalidAnswer
lblResults.Text = "The password answer format was invalid. Please enter a different answer."
Case MembershipCreateStatus.DuplicateUsername
lblResults.Text = "The username is already in use. Please enter a new username."
Case MembershipCreateStatus.DuplicateEmail
lblResults.Text = "The email address is already in use. Please enter a different email address."
Case Else
lblResults.Text = "An error occurred while creating the user."
End Select
End Sub
＜/script＞ |
用户登录和访问用户属性
下面的例子演示了用户使用Membership.ValidateUser方法登录。它还演示了在登录用户的时候如何同时使用窗体认证和成员特性。在上面的例子中创建用户之后，请在登录页面上输入凭证。一旦你登录了，你会被重定向到一个页面，该页面利用Membership.GetUser来检索与登录用户相对应的MembershipUser实例。同时请注意，这个页面还显示了目录上设置的用户属性，这些内容只有通过认证的用户才能访问。点击页面底部的登出链接可以退出站点。 数据挖掘交友
＜script runat="server"＞
Protected memUser As MembershipUser
Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
memUser = Membership.GetUser()
End Sub
Sub linkLogout_Click(ByVal sender As Object, ByVal e As System.EventArgs)
FormsAuthentication.SignOut()
Roles.DeleteCookie()
FormsAuthentication.RedirectToLoginPage()
End Sub
＜/script＞
User Name/ID: ＜% = Server.HtmlEncode(memUser.Username) %＞
Email:＜% = Server.HtmlEncode(memUser.Email) %＞ |
更新用户属性
请用前面建立的用户凭证登录。页面会用ASP.NET 2.0中新的DetailsView控件显示用户属性。DetailsView控件与一个数据源控件通讯。在例子中，ObjectDataSource控件检索MembershipUser实例的内容。你可以点击页面底部的"编辑"链接使DetailsView进入编辑模式。MembershipUser的电子邮件和注释都可以修改。点击"更新"链接可以把新值保存到数据库。请注意，在代码中页面实现了ItemUpdating事件，该事件是由ObjectDataSource引发的。这样做是必要的，MembershipUser类没有参数化构造函数，它要求使用ObjectDataSource的双向数据绑定。点击登出链接可以退出。 数据挖掘工具
Sub DetailsView1_ItemUpdating(ByVal sender As Object, ByVal e as DetailsViewUpdateEventArgs)
"必须手动处理更新操作，因为MembershipUser 没有参数化的构造函数
Dim memUser as MembershipUser = Membership.GetUser()
memUser.Email = CStr(e.NewValues(0))
memUser.Comment = CStr(e.NewValues(1))
Try
Membership.UpdateUser(memUser)
e.Cancel = true
DetailsView1.ChangeMode(DetailsViewMode.ReadOnly)
Catch ex as Exception
Response.Write("＜div＞The following error occurred:＜font color="red"＞ " + ex.Message + "＜/font＞＜/div＞")
e.Cancel = true
End Try
End Sub |
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