根据另一个组合框选定值设置组合框值 - VB.NET
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Set Combobox Value base on another Combobox Selected Value - VB.NET
提问by AznDevil92
I have two comboboxes. If the user selects a certain value from the first combobox then I want the second combobox to automatically change and select to its corresponding value.
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。
For example:
例如：
If Me.InstitutionAdvisoryFirmsComboBox1.SelectedValue = 3 Then
Me.WeightComboBox1.SelectedValue = 2
I have also tried:
我也试过：
If Me.InstitutionAdvisoryFirmsComboBox1.SelectedText = "Internal Guidelines" Then
Me.WeightComboBox1.SelectedText = "None"
Can anyone help?
任何人都可以帮忙吗？
回答by pkatsourakis
//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
回答by Chase Ernst
You will need to use the event handler for the comboBoxthat you are checking. Inside the event handler you can use a slight variation of your if statement:
您将需要使用comboBox您正在检查的事件处理程序。在事件处理程序中，您可以使用 if 语句的细微变化：
If Me.InstitutionAdvisoryFirmsComboBox1.SelectedIndex = 1 Then
Me.WeightComboBox1.SelectedIndex = 2
When using the SelectedIndexfunction, the counting starts at the 0th position.
使用该SelectedIndex功能时，从第 0 位开始计数。
When Using SelectedValueor SelectedItemis used for getting that text or value inside the combobox.
当使用SelectedValue或SelectedItem用于获取combobox.
Dim ComboValue As String = comboBox1.SelectedValue.ToString();
or
或者
Dim ComboValue As String = comboBox1.SelectedItem.ToString();
