本文整理汇总了VB.NET中System.Windows.Forms.Control.TextChanged事件的典型用法代码示例。如果您正苦于以下问题：VB.NET Control.TextChanged事件的具体用法？VB.NET Control.TextChanged怎么用？VB.NET Control.TextChanged使用的例子？那么, 这里精选的事件代码示例或许可以为您提供帮助。
在下文中一共展示了Control.TextChanged事件的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的VB.NET代码示例。
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