有些控件属性可以在 Visual Basic 代码运行时设置和返回。以下示例将一个文本框的 Text 属性设为“Hello”。
TextBox1.Text = "Hello"
关闭窗体时,用户在窗体中输入的数据将丢失。如果在卸载窗体后返回其中控件的值,则得到的是控件的初始值而非用户输入的值。
如果要保存在窗体中输入的数据,可以当窗体还在运行时将该信息保存到模块级变量中。以下示例显示一个窗体并保存窗体数据。
'Code in module to declare public variables
Public strRegion As String
Public intSalesPersonID As Integer
Public blnCancelled As Boolean
'Code in form
Private Sub cmdCancel_Click()
Module1.blnCancelled = True
Unload Me
End Sub
Private Sub cmdOK_Click()
'Save data
intSalesPersonID = txtSalesPersonID.Text
strRegion = lstRegions.List(lstRegions.ListIndex)
Module1.blnCancelled = False
Unload Me
End Sub
Private Sub UserForm_Initialize()
Module1.blnCancelled = True
End Sub
'Code in module to display form
Sub LaunchSalesPersonForm()
frmSalesPeople.Show
If blnCancelled = True Then
MsgBox "Operation Cancelled!", vbExclamation
Else
MsgBox "The Salesperson's ID is: " &
intSalesPersonID & _
"The Region is: " & strRegion
End If
End Sub