VB.NET RoleProvider.RemoveUsersFromRoles方法代码示例

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本文整理汇总了VB.NET中System.Web.Security.RoleProvider.RemoveUsersFromRoles方法的典型用法代码示例。如果您正苦于以下问题：VB.NET RoleProvider.RemoveUsersFromRoles方法的具体用法？VB.NET RoleProvider.RemoveUsersFromRoles怎么用？VB.NET RoleProvider.RemoveUsersFromRoles使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。

在下文中一共展示了RoleProvider.RemoveUsersFromRoles方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的VB.NET代码示例。

示例1: RemoveUsersFromRoles

Public Overrides Sub RemoveUsersFromRoles(ByVal usernames As String(), ByVal rolenames As String())

    For Each rolename As String In rolenames
        If rolename Is Nothing OrElse rolename = "" Then _
          Throw New ProviderException("Role name cannot be empty or null.")
        If Not RoleExists(rolename) Then _
          Throw New ProviderException("Role name not found.")
    Next

    For Each username As String In usernames
        If username Is Nothing OrElse username = "" Then _
          Throw New ProviderException("User name cannot be empty or null.")

        For Each rolename As String In rolenames
            If Not IsUserInRole(username, rolename) Then
                Throw New ProviderException("User is not in role.")
            End If
        Next
    Next

    Dim conn As OdbcConnection = New OdbcConnection(connectionString)
    Dim cmd As OdbcCommand = New OdbcCommand("DELETE FROM UsersInRoles " & _
                                             " WHERE Username = ? AND Rolename = ? AND ApplicationName = ?", conn)

    Dim userParm As OdbcParameter = cmd.Parameters.Add("@Username", OdbcType.VarChar, 255)
    Dim roleParm As OdbcParameter = cmd.Parameters.Add("@Rolename", OdbcType.VarChar, 255)
    cmd.Parameters.Add("@ApplicationName", OdbcType.VarChar, 255).Value = ApplicationName

    Try
        conn.Open()

        For Each username As String In usernames
            For Each rolename As String In rolenames
                userParm.Value = username
                roleParm.Value = rolename
                cmd.ExecuteNonQuery()
            Next
        Next
    Catch e As OdbcException
        ' Handle exception.
    Finally
        conn.Close()
    End Try
End Sub

开发者ID:VB.NET开发者，项目名称:System.Web.Security，代码行数:44，代码来源:RoleProvider.RemoveUsersFromRoles

注：本文中的System.Web.Security.RoleProvider.RemoveUsersFromRoles方法示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。