asp.net - 如何从 CSV 文件中获取行数据

Question

我正在从 CSV 文件中读取数据，我的目标是只获取选定的列，但是到目前为止，我只能循环获取标题。有人可以帮助我循环直到我得到行吗？

导入 System.IO 公共类 Form1

Private Sub btn_import_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btn_import.Click
    Call csvmanagement()

End Sub
Structure systemstructure

    Dim cGroupName As String
    Dim cTransactDate As String
    Dim cRow_ID As String
    Dim cFullName As String
End Structure


Public Sub csvmanagement()

    Dim systemspecs As New systemstructure
    'Dim raw, column As Integer
    Using csvparser As New FileIO.TextFieldParser _
    ("C:\Users\Eranji\Downloads\new.csv")

        Dim csvalue As String()

        csvparser.TextFieldType = Microsoft.VisualBasic.FileIO.FieldType.Delimited
        csvparser.Delimiters = New String() {","}

        csvalue = csvparser.ReadFields()

        systemspecs.cGroupName = csvalue(0)
        systemspecs.cTransactDate = csvalue(1)
        systemspecs.cRow_ID = csvalue(2)
        systemspecs.cFullName = csvalue(2)

        While Not csvparser.EndOfData

        End While
        csvalue = csvparser.ReadFields()

        End

        ListBox1.Items.Add(systemspecs.cFullName & Chr(9) & systemspecs.cGroupName & Chr(9) & systemspecs.cRow_ID & systemspecs.cTransactDate)
    End Using

End Sub

结束类

Answer 1

你只有 ReadFields 一次
ReadFields 是一行
你需要循环结束

While Not MyReader.EndOfData
   csvalue = csvparser.ReadFields()
   ...
End 

TextFieldParser.ReadFields