在 .NET 中创建文件的最快且有效的方法

发布于 2024-09-11 23:57:39 字数 543 浏览 5 评论 0原文

我有一个包含 30000 个项目的数组列表，从 ASP.NEt 页面动态创建文本文件的最佳方法是什么？目前我正在使用下面的代码，但它会因大数据而超时，

Using fileStr As New FileStream(sFileName, FileMode.Create, FileAccess.Write)
 Using writer As New StreamWriter(fileStr)
   writer.WriteLine("Error Messages")
   For d As Integer = 0 To ar.Count - 1
      writer.WriteLine(ar(d).ToString())
      sErrMsg += "<tr><td class='errgrid'>><td class='errgrid'>" + ar(d).ToString() + "</td><tr>"
   Next
   writer.Close()
 End Using
 fileStr.Close()
End Using

原文

I've an arraylist having 30000 items in it, what's the best way of creating a text file on the fly from an ASP.NEt page? Currently I'm using the code below but it times out with large data,

Using fileStr As New FileStream(sFileName, FileMode.Create, FileAccess.Write)
 Using writer As New StreamWriter(fileStr)
   writer.WriteLine("Error Messages")
   For d As Integer = 0 To ar.Count - 1
      writer.WriteLine(ar(d).ToString())
      sErrMsg += "<tr><td class='errgrid'>><td class='errgrid'>" + ar(d).ToString() + "</td><tr>"
   Next
   writer.Close()
 End Using
 fileStr.Close()
End Using

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时间你老了 2024-09-18 23:57:39

我假设 sErrMsg 是一个字符串变量。您确实想将其更改为 StringBuilder。

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左耳近心 2024-09-18 23:57:39

嗯，我认为这是一个简单的方法：

Dim fs As FileStream = File.Create(path)
        Dim info As Byte() = New UTF8Encoding(True).GetBytes("This is some text in the file.")

        ' Add some information to the file.
        fs.Write(info, 0, info.Length)
        fs.Close()

http://msdn.microsoft.com /en-us/library/d62kzs03.aspx

问候，

Well i think this is an easy way:

Dim fs As FileStream = File.Create(path)
        Dim info As Byte() = New UTF8Encoding(True).GetBytes("This is some text in the file.")

        ' Add some information to the file.
        fs.Write(info, 0, info.Length)
        fs.Close()

http://msdn.microsoft.com/en-us/library/d62kzs03.aspx

Regards,

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