c# - 具有最大行数的 Writer txt 文件

Question

我想创建一个最多 400 行的 txt 文件。如果文本文件达到最大行数，则将创建一个具有不同名称的新文件，如果再次达到限制，情况相同。

我写了一个类“MaxLinesWriter”，但它运行起来很慢，不像原来的流光那样快。

有人可以帮帮我吗？

public class MaxLinesWriter
{
    private int n = 0;
    public int MaxLines;
    public string NameFile;
    private string ConstNameFile;
    public int CounterOfLines;

    DateTime date = new DateTime();

    public MaxLinesWriter(string NameFileInput, int MaxLinesInput)
    {
        MaxLines = MaxLinesInput;
        ConstNameFile = NameFileInput;
        NameFile = ConstNameFile + date.Hour.ToString() + date.Minute.ToString() + date.Second.ToString() + date.Millisecond.ToString();
        CounterOfLines = 0;
    }

    public void WriteLine(object StringToWrite)
    {
        if (CounterOfLines < MaxLines)
        {
            StreamWriter writer = new StreamWriter(NameFile + ".txt", true);
            writer.WriteLine(StringToWrite);
            CounterOfLines++;
            writer.Close();
        }
        else
        {
            CounterOfLines = 1;
            date = date.AddMilliseconds(1);
            NameFile = ConstNameFile + date.Hour.ToString() + date.Minute.ToString() + date.Second.ToString() + date.Millisecond.ToString();
            StreamWriter writer = new StreamWriter(NameFile + ".txt");
            writer.WriteLine(StringToWrite);
            writer.Close();
        }
    }
}

Answer 1

如果您在迭代中调用 WriteLine() 方法，则在迭代之外初始化 StreamWriter:

public class MaxLinesWriter
{
    private int n = 0;
    public int MaxLines;
    public string NameFile;
    private string ConstNameFile;
    public int CounterOfLines;
    private StreamWriter writer;

    DateTime date = new DateTime();

    public MaxLinesWriter(string NameFileInput, int MaxLinesInput)
    {
        MaxLines = MaxLinesInput;
        ConstNameFile = NameFileInput;
        NameFile = ConstNameFile + date.Hour.ToString() + date.Minute.ToString() + date.Second.ToString() + date.Millisecond.ToString();
        CounterOfLines = 0;
        writer = new StreamWriter(NameFile + ".txt", true);
    }

    public void WriteLine(object StringToWrite)
    {
        if (CounterOfLines < MaxLines)
        {
            writer.WriteLine(StringToWrite);
            CounterOfLines++;

        }
        else
        {
            writer.Close();
            CounterOfLines = 1;
            date = date.AddMilliseconds(1);
            NameFile = ConstNameFile + date.Hour.ToString() + date.Minute.ToString() + date.Second.ToString() + date.Millisecond.ToString();
            writer = new StreamWriter(NameFile + ".txt");
            writer.WriteLine(StringToWrite);
        }
    }

    // Call it after your last data
    public void Close()
    {
         writer.Close();
    }
}