What is the simplest way to write the contents of a StringBuilder to a text file in .NET 1.1?

问题

I have to use StringBuilder instead of a List of string because of being stuck with .NET 1.1 for this project. It's really cramping my style, and making me feel like I'm wearing raggedy old leopard skin duds and dragging a lumpy club through the dirt.

Anyway, I want to write a series of debug msgs I've written to a file to study at my leisure, as there is too much to see on the screen (the MessageBox doesn't have scrollbars). Some of the easy ways to write a file don't seem to be available in .NET 1.1. I also don't have access to Environment.Newline to cleanly separate the lines I append (AppendLine is not available in this archaic version of StringBuilder, either).

Enough whining, I guess...What is the easiest way in .NET 1.1 (C#) to write out the contents of the StringBuilder to a file? There is no "C" drive on the handheld device, so I reckon I will have to write it to "\hereIAm.txt" or so.

回答1:

You still have access to StreamWriter:

using (System.IO.StreamWriter file = new System.IO.StreamWriter(@"\hereIam.txt"))
{
    file.WriteLine(sb.ToString()); // "sb" is the StringBuilder
}

From the MSDN documentation: Writing to a Text File (Visual C#).

回答2:

I know this is an old post and that it wants an answer for .NET 1.1 but there's already a very good answer for that. I thought it would be good to have an answer for those people who land on this post that may have a more recent version of the .Net framework, such as myself when I went looking for an answer to the same question.

In those cases there is an even simpler way to write the contents of a StringBuilder to a text file. It can be done with one line of code. It may not be the most efficient but that wasn't really the question now was it.

System.IO.File.WriteAllText(@"C:\MyDir\MyNewTextFile.txt",sbMyStringBuilder.ToString());

回答3:

No need for a StringBuilder:

string path = @"c:\hereIAm.txt";
if (!File.Exists(path)) 
{
    // Create a file to write to.
    using (StreamWriter sw = File.CreateText(path)) 
    {
        sw.WriteLine("Here");
        sw.WriteLine("I");
        sw.WriteLine("am.");
    }    
}

But of course you can use the StringBuilder to create all lines and write them to the file at once.

sw.Write(stringBuilder.ToString());

StreamWriter.Write Method (String) (.NET Framework 1.1)

Writing Text to a File (.NET Framework 1.1)

回答4:

StreamWriter is available for NET 1.1. and for the Compact framework. Just open the file and apply the ToString to your StringBuilder:

    StringBuilder sb = new StringBuilder();
    sb.Append(......);

    StreamWriter sw = new StreamWriter("\\hereIAm.txt", true);
    sw.Write(sb.ToString());
    sw.Close();

Also, note that you say that you want to append debug messages to the file (like a log). In this case, the correct constructor for StreamWriter is the one that accepts an append boolean flag. If true then it tries to append to an existing file or create a new one if it doesn't exists.

回答5:

If you need to write line by line from string builder

StringBuilder sb = new StringBuilder();
sb.AppendLine("New Line!");

using (var sw = new StreamWriter(@"C:\MyDir\MyNewTextFile.txt", true))
{
   sw.Write(sb.ToString());
}

If you need to write all text as single line from string builder

StringBuilder sb = new StringBuilder();
sb.Append("New Text line!");

using (var sw = new StreamWriter(@"C:\MyDir\MyNewTextFile.txt", true))
{
   sw.Write(sb.ToString());
}

来源：https://stackoverflow.com/questions/15443739/what-is-the-simplest-way-to-write-the-contents-of-a-stringbuilder-to-a-text-file

标签

.net

file-io

windows-ce

stringbuilder