验证对象是否具有某个属性

Question

我在这里找到了C#代码

所以我试过了

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

但是,在抛出一个错误type.GetMethod(propertyy)说法"Value of type 'System.Reflection.MethodInfo' cannot be converted to 'Boolean'."

该怎么办？

Answer 1

首先,C#代码检查方法的存在,而不是属性.二,C#代码比较返回null:

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,请按如下所示更改方法:

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

Answer 2

它正在返回 MethodInfo ，您可以按如下方式更改它：

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