C#读写文件的方法为StreamReader和StreanWriter

public static void WriteFile(String str)
{
StreamWriter sw = new StreamWriter("E:/file.txt", true, System.Text.Encoding.Default);
sw.WriteLine(str);
sw.Close();

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标签：StreamWriter,WriteLine,C#,sw,System,StreanWriter,str,StreamReader
来源： https://www.cnblogs.com/wwhuyulin/p/15895842.html