vb.net - 在 VB 中试图理解反射.. 或将字符串作为控件

Question

我正在查看关于反射的https://stackoverflow.com/a/4132070/1529149 ..

特别是这个

Public Sub setProperty(ByVal obj As Object, ByVal propName As String, ByVal newValue As Object)
    Dim prop As Reflection.PropertyInfo = obj.GetType().GetProperty(propName)
    If Not prop Is Nothing AndAlso prop.CanWrite Then
    prop.SetValue(obj, newValue, Nothing)
    End If
End Sub

但我需要输入第一个变量作为字符串或动态的东西..

我看不到点设置

setProperty(FixedObject, "Dynamic Property", "Dynamic Results")

什么时候它会更强大

setProperty("Dynamic Object", "Dynamic Property", "Dynamic Results")

例如：

Dim billy As String = "Label"
Dim bob   As Integer = 1

setProperty(billy+bob, "Text", "Results")

创建 Label1.Text = "results"

对获得类似的东西有任何帮助吗？（ps 我知道我可能必须在某处将 bob 转换为字符串，但我还是 VB 的新手）

Answer 1

我不明白你为什么要使用反射，但这有效：

Public Class Form1
    Private Sub Form1Load(sender As Object, e As EventArgs) Handles Me.Load
        Dim billy As String = "Label"
        Dim bob As Integer = 1
        Dim label As Object = Me.Controls(billy & bob)
        SetProperty(label, "Text", "Results")
    End Sub

    Public Sub SetProperty(obj As Object, propName As String, newValue As Object)
        Dim prop As Reflection.PropertyInfo = obj.GetType().GetProperty(propName)
        If Not prop Is Nothing AndAlso prop.CanWrite Then
            prop.SetValue(obj, newValue, Nothing)
        End If
    End Sub
End Class