因为我想测试比较文件的方法，所以随机了一些数字存到文本里面进行测试。
C#比较两个文件内容是否相同
https://blog.csdn.net/qq_33461689/article/details/121499130?spm=1001.2014.3001.5501
int _writeLength = 1024;
string _testPath = @"F:\测试文档.txt";
private void WriteText()
{
StringBuilder stringBuilder = new StringBuilder();
System.Random _ran = new System.Random();
for (int i = 0; i < _writeLength; i++)
{
stringBuilder.Append(_ran.Next(0, 10));
}
FileStream fs = new FileStream(_testPath, FileMode.Create);
byte[] data = new UTF8Encoding().GetBytes(stringBuilder.ToString());
fs.Write(data,0,data.Length);
fs.Flush();
fs.Close();
}这样就创建了一个1KB的随机文件，还挺好玩！