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首页 > 解决方案 > 你如何关闭form1，打开form2并在返回form1并关闭form2后不久？我在参考时遇到问题

vb.net - 你如何关闭form1，打开form2并在返回form1并关闭form2后不久？我在参考时遇到问题

问题描述

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Private Sub ACTIVECLOSEToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles ACTIVECLOSEToolStripMenuItem.Click
    Dim Nform As New Aba_Principal_SecondShift
    Nform.Show()
    Hide()
End Sub

Private Sub CREATEWORKNUMBERToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles CREATEWORKNUMBERToolStripMenuItem.Click
    Dim Nform2 As New Aba_Principal_ThirdShift
    Nform2.Show()
    Hide()
End Sub

我的问题是因为如果我把相反的过程我得到以下错误：“无法添加引用。将此项目添加为引用会导致循环依赖。”

标签： vb.netformswinforms

解决方案

也许这会有所帮助：我刚刚修改了你的代码，我已经将一个 fc 声明为一个表单，并在你的应用程序中将一个值作为一个打开的表单分配给它，之后我创建了一个if statementthen if if fcis an openform 然后关闭它并显示您要显示的表格。PS：不要忘记添加Try Catch Exception代码以防止应用程序崩溃。

Private Sub ACTIVECLOSEToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles ACTIVECLOSEToolStripMenuItem.Click
       Dim fc As Form = Application.OpenForms("Form2")
        If fc IsNot Nothing Then fc.Close()
        form1.Show()
End Sub

Private Sub CREATEWORKNUMBERToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles CREATEWORKNUMBERToolStripMenuItem.Click
       Dim fc As Form = Application.OpenForms("Form1")
        If fc IsNot Nothing Then fc.Close()
        form2.Show()
End Sub

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