Question

我是初学者，请告诉我如何将参数对象Person传递给Button.Click事件。我正在使用vb.net。这是我的代码：

Public Class Form1
    Public Class MyPersonClass
        Public Name As String
        Public Age As Integer
        Public Title As String
    End Class

    Public Sub DisplayPerson(ByVal person As MyPersonClass)
        Label1.Text = person.Name
        Label2.Text = person.Age.ToString()
        Label3.Text = person.Title
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click



    End Sub
End Class

Answer 1

你没有 - Button1_Click是event handler，你不应该手动调用它。当某个事件发生时，被称为，具有预定义的参数。你无法真正调整这些参数，因为它没有意义：事件将不再知道如何调用处理程序。

当然，您可以轻松编写自己的方法并将任何对象传递给它。你已经完成了DisplayPerson。

Answer 2

Private ExamplePerson As MyPerson  

Private Sub Form_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    ExamplePerson = New MyPersonClass 'thanks Chris Dunaway for the correction
    ExamplePerson.Name = "Test Name"
    ExamplePerson.Age = 36
    ExamplePerson.Title = "Title Name"
End Sub

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    DisplayPerson(ExamplePerson)
End Sub

在VB.NET中将对象作为参数传递

2 个答案: