How to manually dropdown the ComboBoxBase?

1 min read

The dropdown area of ComboBoxBase can be programmatically displayed using the following code.

In this example, a button control is added to the form and a Click event handler is setup to call the DroppedDown property.

object sender, System.EventArgs e)private void button1_Click(
{
    this.comboBoxBase1.DroppedDown =true;
}

Private Sub button1_Click(ByVal sender As Object, ByVal e As System.EventArgs)
    Me.comboBoxBase1.DroppedDown = True
End Sub

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