TextBox突出显示文本Visual Basic

Question

我的TextBox有问题。我正在尝试制作像备忘录这样的小程序。当您在文本框中写入内容时，它会将其保存下次，以便您再次打开它。但问题是当您再次打开程序时，旧文本会突出显示。那么我如何删除它？

   Public Class Form1 
     Private Sub 
       Form1_FormClosing(sender As Object, e As FormClosingEventArgs) Handles Me.FormClosing
       My.Settings.memo = TextBox1.Text My.Settings.Save() 
     End Sub 
     Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load 
       TextBox1.Text = My.Settings.memo + Environment.NewLine 
     End Sub 
   End Class

Answer 1

请参阅TextBox.SelectionStart属性