vb.net - 验证对象是否具有特定属性

Question

我找到了它的 C# 代码 here

所以我尝试了

Public Function checkProperty(ByVal objectt As Object, ByVal propertyy As String) As Boolean
    Dim type As Type = objectt.GetType
    Return type.GetMethod(propertyy)
End Function

但它在 type.GetMethod(propertyy) 处抛出错误，提示“‘System.Reflection.MethodInfo’类型的值无法转换为‘Boolean’。”

要做什么？

Answer 1

首先，C# 代码检查是否存在方法，而不是属性。其次，C# 代码将 return 与 null 进行比较:

Public Function checkProperty(ByVal objectt As Object, ByVal propertyy As String) As Boolean
    Dim type As Type = objectt.GetType
    Return type.GetProperty(propertyy) IsNot Nothing
End Function

编辑要检查字段，请按如下方式更改方法:

Public Function checkField(ByVal objectt As Object, ByVal fieldName As String) As Boolean
    Dim type As Type = objectt.GetType
    Return type.GetField(fieldName) IsNot Nothing
End Function