如何遍历一个类的所有属性? [英] How to loop through all the properties of a class?

问题描述

我有一堂课.

Public Class Foo
    Private _Name As String
    Public Property Name() As String
        Get
            Return _Name
        End Get
        Set(ByVal value As String)
            _Name = value
        End Set
    End Property

    Private _Age As String
    Public Property Age() As String
        Get
            Return _Age
        End Get
        Set(ByVal value As String)
            _Age = value
        End Set
    End Property

    Private _ContactNumber As String
    Public Property ContactNumber() As String
        Get
            Return _ContactNumber
        End Get
        Set(ByVal value As String)
            _ContactNumber = value
        End Set
    End Property


End Class

我想遍历上述类的属性.例如;

I want to loop through the properties of the above class. eg;

Public Sub DisplayAll(ByVal Someobject As Foo)
    For Each _Property As something In Someobject.Properties
        Console.WriteLine(_Property.Name & "=" & _Property.value)
    Next
End Sub

推荐答案

使用反射:

Type type = obj.GetType();
PropertyInfo[] properties = type.GetProperties();

foreach (PropertyInfo property in properties)
{
    Console.WriteLine("Name: " + property.Name + ", Value: " + property.GetValue(obj, null));
}

对于 Excel - 必须添加哪些工具/参考项才能访问 BindingFlags，因为列表中没有System.Reflection"条目

for Excel - what tools/reference item must be added to gain access to BindingFlags, as there is no "System.Reflection" entry in the list

您还可以为 type.GetProperties() 指定 BindingFlags 值:

You can also specify a BindingFlags value to type.GetProperties():

BindingFlags flags = BindingFlags.Public | BindingFlags.Instance;
PropertyInfo[] properties = type.GetProperties(flags);

这会将返回的属性限制为公共实例属性(不包括静态属性、受保护的属性等).

That will restrict the returned properties to public instance properties (excluding static properties, protected properties, etc).

您不需要指定BindingFlags.GetProperty，您可以在调用type.InvokeMember() 时使用它来获取属性的值.

You don't need to specify BindingFlags.GetProperty, you use that when calling type.InvokeMember() to get the value of a property.

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