本文整理匯總了VB.NET中System.Windows.Forms.Control.BackColorChanged事件的典型用法代碼示例。如果您正苦於以下問題：VB.NET Control.BackColorChanged事件的具體用法？VB.NET Control.BackColorChanged怎麽用？VB.NET Control.BackColorChanged使用的例子？那麽, 這裏精選的事件代碼示例或許可以為您提供幫助。
在下文中一共展示了Control.BackColorChanged事件的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的VB.NET代碼示例。
示例1:
Private Sub currencyTextBox_TextChanged(sender As Object, _
e As EventArgs) Handles currencyTextBox.TextChanged
Try
' Convert the text to a Double and determine if it is a negative number.
If Double.Parse(currencyTextBox.Text) < 0 Then
' If the number is negative, display it in Red.
currencyTextBox.ForeColor = Color.Red
Else
' If the number is not negative, display it in Black.
currencyTextBox.ForeColor = Color.Black
End If
Catch
' If there is an error, display the text using the system colors.
currencyTextBox.ForeColor = SystemColors.ControlText
End Try
End Sub