如何使用VB.Net中的继承将文本框的值从一种形式获取到另一种形式

Question

Let say, I want to get value of textbox from one winform to another with the help of inheritance in vb.net

If Form1.TextBox1.Text = "1" Then
    'This is Form2'
    TextBox1.Text = "1"
Else
    TextBox1.Text = "2"
End If

Answer 1

The code below is just for demo. Advised not to do in this way. This is really really bad coding

1. Create two forms; from1 and form2.
2. Add two textboxes and one button.
3. copy the code below.
4. you type in textbox2 and click the button.

5. it will display in form1, if you enter it from form2 and vice versa.

    // Form1.vb Public Partial Class Form1 Inherits Form Private f2 As Form2 Public Sub New() InitializeComponent() f2 = New Form2(Me) f2.Show() End Sub Private Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs) f2.setText(textBox2.Text) End Sub Public Sub setText(ByVal text As String) textBox1.Text = text End Sub End Class // Form2.vb Public Partial Class Form2 Inherits Form Private f1 As Form1 Public Sub New(ByVal form As Form1) InitializeComponent() f1 = form End Sub Private Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs) f1.setText(textBox2.Text) End Sub Public Sub setText(ByVal text As String) textBox1.Text = text End Sub End Class

what this code do is create form2 with reference to form1 and call setText which will change text in textbox1 in either form when button click. I repeat never ever do this. there you go vb