Question

我是VB.net的新手，我成功地编写了一个文本文件。我正在尝试在文本文档中存储许多数值的条目。我写的代码是：

Imports System
Imports System.IO
Imports System.Text
Public Class set_time

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
    If (Not System.IO.Directory.Exists("C:\MainRegistry")) Then
        System.IO.Directory.CreateDirectory("C:\MainRegistry")
    End If
    If System.IO.File.Exists("C:\MainRegistry\MainRegistry.txt") = True Then

        System.IO.File.Delete("C:\MainRegistry\MainRegistry.txt")


    End If

    Dim MainRegistry As New System.IO.StreamWriter("C:\MainRegistry\MainRegistry.txt", True)
    MainRegistry.Write(monhour.Value + "," + monmin.Value)
    MainRegistry.Close()
End Sub
End Class

问题是我在Write()行收到错误：Conversion from string "," to type 'Double' is not valid.

Answer 1

您的问题在这里：

MainRegistry.Write(monhour.Value + "," + monmin.Value)

monhour.Value似乎是double的变量类型，而您尝试将其与字符串连接。使用ToString函数可以帮助解决此错误。

MainRegistry.Write(monhour.Value.ToString + "," + monmin.Value.ToString)

ToString MSDN

在文本文档中编写数值

1 个答案: