VB.NET刪除文本框的第一行

Question

如何刪除按鈕按下的文本框的第一行？

Answer 1

試試這個：

Dim b As String() = Split(TextBox1.Text, vbNewLine) 

    TextBox1.Text = String.Join(vbNewLine, b, 1, b.Length - 1) 

參考見String.Join。

Answer 2

相當容易：

Private Sub bttnFirstLine_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles bttnFirstLine.Click 
     txtBox.Text = txtBox.Text.Substring(txtBox.Text.IndexOf(vbCrLf)) 
end sub 

或

Private Sub bttnFirstLine_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles bttnFirstLine.Click 
      dim myString = txtBox.text 
      txtBox.Text = myString.Substring(myString.IndexOf(vbCrLf)) 
    end sub