.net Can'；除非使用计时器，否则不要在运行时选择动态创建的组合框的值

我在运行时创建了N个combobox，并将它们绑定到不同的数据表，当我尝试在运行时选择它们的值，但它们好像还没有加载任何值时，我只能通过使用触发另一个事件的计时器来完成此任务，但我不能这样做。 如果有帮助，可以在自定义类面板内创建组合框

Edit1:也尝试使用委托

工作

不起作用

cbodescription.Focus()
For i As Integer = 0 To mLista.Count - 1
                Dim Txtbox As New TextBox
                Txtbox.Tag = i
                Txtbox.Text = mLista(i).Codice.ToString.Trim
                Dim o As New KeyPressEventArgs(Microsoft.VisualBasic.ChrW(Keys.Enter))
                Panel_onTxtCodiceKeyPress(Txtbox, o)
            Next

按键事件

Private Sub Panel_onTxtCodiceKeyPress(sender As Object, e As KeyPressEventArgs) Handles PanelSF.onTxtCodiceKeyPress
    Dim Tag As Integer = DirectCast(sender, TextBox).Tag
    Dim Value As String = CType(sender, TextBox).Text

    If e.KeyChar = Microsoft.VisualBasic.ChrW(Keys.Enter) Then
        Dim Tipo As Integer = Panel.GetCboType(Tag)

        If ArticoloExist(Tipo, Value) = True Then
            Panel.ChangeDisplayMemberByName(Tag, mItemName)
        End If

        mItemName = ""
    End If

ChangeDisplayMemberByName

Public Sub ChangeDisplayMemberByName(Tag As Integer, Nome As String)
    Dim Cbo As ComboBox

    For Each Ingrediente As ClassIngredienteRicetta In ListaIngredienti
        If Ingrediente.Numero() = Tag Then
            Ingrediente.Descrizione = Nome
        End If
    Next

    For Each Control As Control In Me.Controls
        If TypeOf Control Is ComboBox Then
            If Control.Name = "CboArticoli" & Tag Then
                Cbo = Control
                Cbo.SelectedIndex = Cbo.FindString(Nome)
                Exit Sub
            End If
        End If
    Next

End Sub

---

关于如何完成该任务的任何建议？

通过在表单中使用委托来解决。加载事件

mLista

或

mlistingredienti

？mLista是我定义的一个类的列表，其中每个项包含每个项的所有信息，mLista.Codice包含Combobox.ValueMember和mLista.DescriptionOne包含Combobox.DislayMember，选择传递值的值或搜索字符串将返回Nothing您将“不工作”的代码放在哪里了？我已将其放在Public Sub New（）中，但我已解决，谢谢您的回答

Public Sub ChangeDisplayMemberByName(Tag As Integer, Nome As String)
    Dim Cbo As ComboBox

    For Each Ingrediente As ClassIngredienteRicetta In ListaIngredienti
        If Ingrediente.Numero() = Tag Then
            Ingrediente.Descrizione = Nome
        End If
    Next

    For Each Control As Control In Me.Controls
        If TypeOf Control Is ComboBox Then
            If Control.Name = "CboArticoli" & Tag Then
                Cbo = Control
                Cbo.SelectedIndex = Cbo.FindString(Nome)
                Exit Sub
            End If
        End If
    Next

End Sub