如何在文本框中查找特定行

Question

如何在文本框中获取特定行并从字符串中获取该行的文本

Answer 1

Dim lines As String() = testing.Text.Split(Environment.NewLine)

然后像这样访问行

lines(0) // would be first line

Answer 2

您需要根据行分隔符将文本框文本拆分为字符串数组，然后，如果您有足够的行，则从数组中获取行：

    Dim asLines As String()
    Dim wLineToGet As Integer = 2
    asLines = TextBox1.Text.Split(New String() {Environment.NewLine}, StringSplitOptions.None)
    If asLines IsNot Nothing AndAlso asLines.Length >= wLineToGet Then
        MessageBox.Show("Line " & wLineToGet & " = " & asLines(wLineToGet - 1))
    Else
        MessageBox.Show("There are not enough lines in the textbox to retrieve line " & wLineToGet)
    End If