需要帮助创建文件并在其上书写 [英] Need help in creating files and writing on it

问题描述

大家好

Hi all

int lines = File.ReadAllLines(@"C:\ReportPrint.txt").Count();
                                if (lines > 50)
                                {
                                    string path1 = @"C:\ReportPrint.txt";
                                   
                                    string newFilePath = @"C:\ReportPrint_1.txt";

这是我用来检查文件中行​​数的代码，如果它更多然后50然后创建另一个文件。

工作正常。



但我想要的是假设行= 200

所以我将它除以50.因此代码应创建4个文件，如ReportPrint_1，ReportPrint_2等，并在每个文件上复制50行。





请告诉我怎么做。

this is the code i am using to checking the number of lines in a file and if it is more then 50 then create another file.
It's working fine.

But what i want is suppose lines=200
so i will divide it by 50. so the code should create 4 files like ReportPrint_1, ReportPrint_2 etc and copy 50 lines on each of them.


please tell me how to do this.

推荐答案

我确实喜欢这个

I did like this

public void splitfiles()
{


    const string sourceFileName = @"C:\ReportPrint.txt";
    const string destinationFileName = @"C:\ReportPrint-{0}.txt";
    const int linesPerFile = 50;

using (var sourceFile = new StreamReader(sourceFileName))
{
    var fileCounter = 0;
    var destinationFile = new StreamWriter(
        string.Format(destinationFileName, fileCounter + 1));

    try
    {
        var lineCounter = 0;

        string line;
        while ((line = sourceFile.ReadLine()) != null)
        {
            // Did we reach the maximum number of lines for the file?
            if (lineCounter >= linesPerFile)
            {
                // Yep... Time to close this one and
                // switch to another file
                lineCounter = 0;
                fileCounter++;

                destinationFile.Dispose();
                destinationFile = new StreamWriter(
                    string.Format(destinationFileName, fileCounter + 1));
            }

            destinationFile.WriteLine(line);
            lineCounter++;
        }
    }
    finally
    {
        destinationFile.Dispose();
    }
}

如果看起来不是一个好主意，但问题是什么？请看：

http ：//msdn.microsoft.com/en-us/library/system.io.streamreader%28v=vs.110%29.aspx [ ^ ]，

< a href =http://msdn.microsoft.com/en-us/library/system.io.streamwriter%28v=vs.110%29.aspx> http://msdn.microsoft.com/en-us /library/system.io.streamwriter%28v=vs.110%29.aspx [ ^ ]，

http://msdn.microsoft.com/en-us/library/system.io.streamreader.readline（ v = vs.110）.aspx [ ^ ]，

http://msdn.microsoft.com/en -us / library / 7ack4zyt（v = vs.110）.aspx [ ^ ]。



有什么问题吗？ :-)

-SA

If does not look like a good idea, but what's the problem? Just see:
http://msdn.microsoft.com/en-us/library/system.io.streamreader%28v=vs.110%29.aspx[^],
http://msdn.microsoft.com/en-us/library/system.io.streamwriter%28v=vs.110%29.aspx[^],
http://msdn.microsoft.com/en-us/library/system.io.streamreader.readline(v=vs.110).aspx[^],
http://msdn.microsoft.com/en-us/library/7ack4zyt(v=vs.110).aspx[^].

Any concerns? :-)

—SA

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