vb.net 根据条件编辑文件并保存

Question

我有一个文件，其中包含逐行编写的测试日期和结果。我想编辑文件，以便删除任何没有今天日期的行，然后保存文件（删除不需要的行）。帮助将不胜感激。

Dim rawlines() As String Dim outputlines As New List(Of String) rawlines = File.ReadAllLines("C:usersuser10rslts.csv") For Each line As String In rawlines If line.Contains(today()) = True Then outputlines.Add(line) End If Next

Answer 1

读取行数：

Dim rawlines() As String
    Dim outputlines As New List(Of String)
    rawlines = File.ReadAllLines("C:usersuser10rslts.csv")
    For Each line As String In rawlines
        If line.Contains(today()) = True Then
            outputlines.Add(line)
        End If
    Next

将行写入新文件：

    Dim MyFile As StreamWriter
    File.Create("c:testTheResults.csv").Close()
    MyFile = File.AppendText("c:testTheResults.csv")
    For Each Line As String In outputlines
        MyFile.WriteLine(Line)
    Next
    MyFile.Close()