本文整理匯總了VB.NET中System.Windows.Forms.Control.OnParentChanged方法的典型用法代碼示例。如果您正苦於以下問題:VB.NET Control.OnParentChanged方法的具體用法?VB.NET Control.OnParentChanged怎麽用?VB.NET Control.OnParentChanged使用的例子?那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。
在下文中一共展示了Control.OnParentChanged方法的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: OnTextChanged
Protected Overrides Sub OnTextChanged(e As System.EventArgs)
Try
' Convert the text to a Double and determine
' if it is a negative number.
If Double.Parse(Me.Text) < 0 Then
' If the number is negative, display it in Red.
Me.ForeColor = Color.Red
Else
' If the number is not negative, display it in Black.
Me.ForeColor = Color.Black
End If
Catch
' If there is an error, display the
' text using the system colors.
Me.ForeColor = SystemColors.ControlText
End Try
MyBase.OnTextChanged(e)
End Sub