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这是我想在我的项目中实现的目标:

当用户按下按钮时,会弹出一个带有文本框、单选按钮和选择菜单的表单,允许用户输入他们的信息,

点击确定,表单数据将传递到主程序表单中的某个文本框点击取消,子表单就消失了

这在VB中可能吗?

我试过提示和输入框,但有限制

我是VB的新手,如果我没有把问题说清楚,很抱歉

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3 回答 3

3

一种更简单的方法是声明一个您将使用的形式的变量,然后调用 showdialog。现在您可以访问表单上的所有控件属性。因为您使用的是 form2 的对象,所以关闭表单不会处理该对象,因此一切都可用。

    Dim NewForm2 As New Form2
    Dim Result As DialogResult = NewForm2.ShowDialog
    If Result = Windows.Forms.DialogResult.OK Then
        MsgBox(Newform2.TextBox1.Text)
    End If

在 Form2 中添加:

Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
    Me.DialogResult = Windows.Forms.DialogResult.OK
    Me.Close()
End Sub
于 2013-06-21T08:06:30.717 回答
1

我使用了这个示例并稍微清理了代码: http ://www.dreamincode.net/forums/topic/103846-custom-inputbox/

我不知道如何实现您的单选按钮和选择菜单,但您可能会弄清楚,因为困难的部分是从弹出表单中获取文本以传递回调用表单,并且在这里为您完成。让我知道你是否需要这部分的帮助。也许您可以提供 UI 的屏幕截图?

因此,从您的呼叫表单中,单击按钮以显示提示:

Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
    Dim result = frmPrompt.Show("The Title", "The Prompt", "Default", TextBox1.Text, False)
End Sub

这是您粘贴到自定义提示表单中的代码:

Imports System.Windows.Forms

Public Class frmPrompt

Protected m_BlankValid As Boolean = True
Protected m_ReturnText As String = ""

Public Overloads Function ShowDialog( _
  ByVal TitleText As String, _
  ByVal PromptText As String, _
  ByVal DefaultText As String, _
  ByRef EnteredText As String, _
  ByVal BlankValid As Boolean) As System.Windows.Forms.DialogResult
    m_BlankValid = BlankValid
    Me.Lbl_Prompt.Text = PromptText
    Me.Text = TitleText
    Me.Txt_TextEntry.Text = DefaultText
    Me.ShowDialog()
    EnteredText = m_ReturnText
    Return Me.DialogResult
End Function

Public Overloads Shared Function Show(ByVal TitleText As String, ByVal promptText As String, ByVal DefaultText As String, ByRef TextInputted As String, Optional ByVal IsEmptyValid As Boolean = True) As System.Windows.Forms.DialogResult
    Dim tmp As New frmPrompt
    Return tmp.ShowDialog(TitleText, promptText, DefaultText, TextInputted, IsEmptyValid)
End Function

Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Txt_TextEntry.TextChanged
    If Me.Txt_TextEntry.Text = "" Then
        Me.But_Ok.Enabled = m_BlankValid
    Else
        Me.But_Ok.Enabled = True
    End If
End Sub

Private Sub OK_Button_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles But_Ok.Click
    Me.DialogResult = System.Windows.Forms.DialogResult.OK
    m_ReturnText = Me.Txt_TextEntry.Text
    Me.Close()
End Sub

Private Sub Cancel_Button_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles But_Cancel.Click
    Me.DialogResult = System.Windows.Forms.DialogResult.Cancel
    m_ReturnText = ""
    Me.Close()
End Sub
End Class
于 2013-06-21T02:57:52.073 回答
0

只需创建自己的表单并将其显示.ShowDialog()为模态,例如 InputBox。

然后,在控件中输入数据时,在关闭表单之前,将数据传递到主表单,以免丢失。

于 2013-06-21T05:41:28.357 回答