在 vb.net 中将变量从一种形式传递到另一种形式
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Passing variable from one form to another in vb.net
提问by anm
I've looked this question up 10 times but each answer is too specific to the question.
我已经将这个问题看了 10 次，但每个答案都太针对问题了。
I have two public classes, one per form.
我有两个公共课程，每个表格一个。
The first form has a textbox and two buttons:
第一个表单有一个文本框和两个按钮：
Public Class frmAdd
Public addvar As String
Public Sub UltraButton1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAddNote.Click
If txtAdd.Text = String.Empty Then
MsgBox("Please complete the notes textbox!")
Else
addvar = txtAdd.Text
MsgBox(addvar)
Close()
End If
End Sub
Public Sub UltraButton2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCancel.Click
Me.Close()
End Sub
End Class
In the second form I want to take that addvar variable and say
在第二种形式中，我想采用那个 addvar 变量并说
Public Sub saveButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles addButton.Click
frmAdd.show()
me.textbox1.text = addvar
How do I get this to work in vb.net?
我如何让它在 vb.net 中工作？
采纳答案by JaredPar
You need to read the field out of the frmAddvalue
您需要从frmAdd值中读取字段
me.textbox1.text = frmAdd.addvar
Note that this value won't be available until the form completes and is closed. Hence you want to use ShowDialog(doesn't return until form is closed) vs. Show(which returns immediately after displaying the form).
请注意，在表单完成并关闭之前，此值将不可用。因此，您要使用ShowDialog（在表单关闭之前不返回）与Show（在显示表单后立即返回）。
frmAdd.ShowDialog()
Me.textbox1.Tex = frmAdd.addvar
