ComboBox.SelectedIndexChanged事件，如何使用? [英] ComboBox.SelectedIndexChanged event, how to use it ?

问题描述

如何使用ComboBox事件SelectedIndexChanged?

How can I use ComboBox event SelectedIndexChanged ?

推荐答案

嗨

当您在窗体上双击组合框时，它会生成一个这样的事件(这是vb.net代码)

Hi

when you put a combobox on your Form double click it , it will generate an event like this(this is vb.net code)

 Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
       
'operation for this event as you needed
 Dim intSelectedIndex As Integer
        intSelectedIndex = ComboBox1.SelectedIndex
        Dim objSelectedItem As Object
        objSelectedItem = ComboBox1.SelectedItem

        TextBox1.Text = "Item's index: " & intSelectedIndex & _
        ". Item's text: " & objSelectedItem.ToString()
End Sub

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