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| class FileReadAndWrite
{
private const int Length = 1024;
private const int Cycles = 64;
private int readCount;
private byte[] byData;
private double[] dis;
public FileReadAndWrite()
{
readCount = Length * sizeof(double);
dis = new double[Length];
byData = new byte[Cycles * Length * sizeof(double)];
}
#region BinaryWriter\BinaryReader
public void BinaryWriterMethod()
{
using (BinaryWriter bw = new BinaryWriter(File.Open("File.Binary", FileMode.Create)))
{
byte[] data = new byte[Cycles * readCount];
for (int i = 0; i < Cycles; i++)
{
for (int j = 0; j < Length; j++)
{
dis[j] = i * Length + j;
}
Buffer.BlockCopy(dis, 0, data, i * readCount, readCount);
}
bw.Write(data);
}
}
public void BinaryReaderMethod()
{
using (BinaryReader wr = new BinaryReader(File.Open("File.Binary", FileMode.Open)))
{
for (int i = 0; i < Cycles; i++)
{
var readData = wr.ReadBytes(readCount);
Buffer.BlockCopy(readData, 0, dis, 0, readCount);
}
}
}
#endregion
#region FileStream Read\Write
public void FileStreamWriterMethod()
{
using (FileStream fs = new FileStream("File.FileStream", FileMode.Create,FileAccess.Write))
{
for (int i = 0; i < Cycles; i++)
{
for (int j = 0; j < Length; j++)
{
dis[j] = i * Length + j;
}
Buffer.BlockCopy(dis, 0, byData, i * readCount, readCount);
}
fs.Write(byData, 0, byData.Length);
}
}
public void FileStreamReadMethod()
{
using (FileStream fs = new FileStream("File.FileStream", FileMode.Open, FileAccess.Read))
{
for (int i = 0; i < Cycles; i++)
{
fs.Seek(i * readCount, SeekOrigin.Begin);
fs.Read(byData, 0, readCount);
Buffer.BlockCopy(byData, i * readCount, dis, 0, readCount);
}
}
}
#endregion
#region StreamWriter\StreamReader
public void StreamWriterMethod()
{
using (StreamWriter sw = new StreamWriter("File.Stream", false,
Encoding.GetEncoding("utf-16")))
{
StringBuilder sb = new StringBuilder();
for (int i = 0; i < Cycles; i++)
{
for (int j = 0; j < Length; j++)
{
dis[j] = i * Length + j;
sb.AppendFormat("{0},", dis[j]);
}
sb.AppendFormat("\n");
}
sw.WriteLine(sb);
}
}
public void StreamReaderMethod()
{
using (StreamReader sd = new StreamReader("File.Stream", Encoding.GetEncoding("utf-16")))
{
for (int i = 0; i < Cycles; i++)
{
string[] ch = sd.ReadLine().Split(new Char[] { ',' },
System.StringSplitOptions.RemoveEmptyEntries);
for (int j = 0; j < Length; j++)
{
double.TryParse(ch[j], out dis[j]);
}
}
}
}
#endregion
}
|