Question

是否可以根据VB.net中的参数动态声明和实例化对象？

我必须声明我希望实例化的每个对象，这似乎很疯狂。

下面的代码不起作用，但也许有某种解决方法可以达到相同的效果？

Public Class Form1
    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        Dim jeff As String = "Jeff"
        DynamicDeclare(jeff)
    End Sub


    Private Sub DynamicDeclare(ByVal objectName As String)
        Dim objectName As New Person
    End Sub
End Class

Class Person
    Property FirstName As String
    Property Age As Integer
End Class

Answer 1

使用反射，这样的东西可能适合您的需要。我没有测试过，但它应该可以工作。

Public Class Form1
    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        Dim jeff As String = "Jeff"
        Dim methodName as string = "DynamicDeclare"
        Dim type as Type = GetType(Person)
        Dim method as System.Reflection.MethodInfo = type.GetMethod(methodName)
        Dim person as Person = method.Invoke(Nothing, new object(){jeff})
    End Sub
End Class

Public Class Person
   Property FirstName As String
   Property Age As Integer

    Public Function DynamicDeclare(ByVal objectName As String) as Person
       Dim person As New Person
       person.FirstName = objectName
       Return person
    End Function
End Class

基于参数动态声明和实例化对象

1 个答案: