vb.net - 根据另一个组合框选定值设置组合框值 - VB.NET

Question

我有两个组合框。如果用户从第一个组合框中选择某个值，那么我希望第二个组合框自动更改并选择其相应的值。

例如:

If Me.InstitutionAdvisoryFirmsComboBox1.SelectedValue = 3 Then 
     Me.WeightComboBox1.SelectedValue = 2

我也尝试过:

If Me.InstitutionAdvisoryFirmsComboBox1.SelectedText = "Internal Guidelines" Then                 
    Me.WeightComboBox1.SelectedText = "None"

有人可以帮忙吗？

Answer 1

//selected index changed event for the combo box 

Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As Object, _
    ByVal e As System.EventArgs) Handles InstitutionAdvisoryFirmsComboBox1.SelectedIndexChanged

    If Me.InstitutionAdvisoryFirmsComboBox1.SelectedIndex = 3 Then 
        If Me.WeightComboBox1.Items.Count >= 2 Then // make sure you are not accessing an index out of range
            Me.WeightComboBox1.SelectedIndex = 2
        End If
    End If

End Sub