本文整理汇总了VB.NET中System.Web.Security.RoleProvider.DeleteRole方法的典型用法代码示例。如果您正苦于以下问题：VB.NET RoleProvider.DeleteRole方法的具体用法？VB.NET RoleProvider.DeleteRole怎么用？VB.NET RoleProvider.DeleteRole使用的例子？那么, 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.DeleteRole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，您的评价将有助于系统推荐出更棒的VB.NET代码示例。
示例1: DeleteRole
Public Overrides Function DeleteRole(ByVal rolename As String, ByVal throwOnPopulatedRole As Boolean) As Boolean
If Not RoleExists(rolename) Then
Throw New ProviderException("Role does not exist.")
End If
If throwOnPopulatedRole AndAlso GetUsersInRole(rolename).Length > 0 Then
Throw New ProviderException("Cannot delete a populated role.")
End If
Dim conn As OdbcConnection = New OdbcConnection(connectionString)
Dim cmd As OdbcCommand = New OdbcCommand("DELETE FROM Roles " & _
" WHERE Rolename = ? AND ApplicationName = ?", conn)
cmd.Parameters.Add("@Rolename", OdbcType.VarChar, 255).Value = rolename
cmd.Parameters.Add("@ApplicationName", OdbcType.VarChar, 255).Value = ApplicationName
Dim cmd2 As OdbcCommand = New OdbcCommand("DELETE FROM UsersInRoles " & _
" WHERE Rolename = ? AND ApplicationName = ?", conn)
cmd2.Parameters.Add("@Rolename", OdbcType.VarChar, 255).Value = rolename
cmd2.Parameters.Add("@ApplicationName", OdbcType.VarChar, 255).Value = ApplicationName
Try
conn.Open()
cmd2.ExecuteNonQuery()
cmd.ExecuteNonQuery()
Catch e As OdbcException
' Handle exception.
Return False
Finally
conn.Close()
End Try
Return True
End Function