C#,BinaryReader,';拉开';二进制文件
本文关键字:二进制文件 拉开 BinaryReader | 更新日期: 2023-09-27 18:20:01
我正在尝试使用binaryreader来"拆分"和索引二进制文件,但我需要一些帮助。到目前为止我得到了这个:
using (BinaryReader b = new BinaryReader(File.Open(openRaw.FileName, FileMode.Open)))
{
int pos = 0;
// 2A.
// Use BaseStream.
int length = (int)b.BaseStream.Length;
while (pos < length)
{
//Move on
pos += sizeof(int);
}
}
但现在困难的部分开始了,至少对我来说是这样
该文件包含由169个字节组成的字节数组,这些字节由!(0x21)字符。对于每个字节数组,我需要将其拆分为由16位和8位组成的多个值。我很清楚索引,而且它总是一样的。例如:索引0+1包含表示速度的U16十进制值,索引16+17包含表示压力的S16十进制值。通过每个169字节的数组依次类推。
我该如何处理?
编辑:
我没有这个:
FileInfo f = new FileInfo(openRaw.FileName);
double s1 = Convert.ToDouble(f.Length);
double s2 = s1 / 170;
double s3 = Math.Floor(s2);
double s4 = s3 * 170;
using (BinaryReader b = new BinaryReader(File.Open(openRaw.FileName, FileMode.Open), Encoding.ASCII))
{
int pos = 0;
// 2A.
// Use BaseStream.
while (pos < s4)
{
while (b.PeekChar() != -1)
{
if (b.ReadByte() != 0x21)
{
flag = 1;
}
temp = b.ReadBytes(2);
Array.Reverse(temp);
seconds = BitConverter.ToUInt16(temp, 0);
temp = b.ReadBytes(2);
Array.Reverse(temp);
PW1 = BitConverter.ToUInt16(temp, 0);
temp = b.ReadBytes(2);
Array.Reverse(temp);
PW2 = BitConverter.ToUInt16(temp, 0);
temp = b.ReadBytes(2);
Array.Reverse(temp);
RPM = BitConverter.ToUInt16(temp, 0);
temp = b.ReadBytes(2);
Array.Reverse(temp);
advance = BitConverter.ToInt16(temp, 0);
NN = b.ReadBytes(6);
temp = b.ReadBytes(2);
Array.Reverse(temp);
Baro = BitConverter.ToInt16(temp, 0);
temp = b.ReadBytes(2);
Array.Reverse(temp);
map = BitConverter.ToInt16(temp, 0);
temp = b.ReadBytes(2);
Array.Reverse(temp);
mat = BitConverter.ToInt16(temp, 0);
temp = b.ReadBytes(2);
Array.Reverse(temp);
clt = BitConverter.ToInt16(temp, 0);
temp = b.ReadBytes(2);
Array.Reverse(temp);
tps = BitConverter.ToInt16(temp, 0);
temp = b.ReadBytes(2);
Array.Reverse(temp);
bat = BitConverter.ToInt16(temp, 0);
temp = b.ReadBytes(2);
Array.Reverse(temp);
AFR = BitConverter.ToInt16(temp, 0);
stemp16 = b.ReadInt16();
temp = b.ReadBytes(2);
Array.Reverse(temp);
knock = BitConverter.ToInt16(temp, 0); ; //33
NN = b.ReadBytes(135);
table1.Rows.Add((seconds * 0.00390625), RPM, map, (tps * 0.1), ((mat - 320) * 0.05555), ((clt - 320) * 0.05555), (PW1 * 0.000666), (PW2 * 0.000666), (advance * 0.1), (knock * 0.1), (RPM/100), (Baro * 0.1), (AFR * 0.1), (bat * 0.1));
}
//Move on
pos = pos+= sizeof(int);
}
dataGridView1.DataSource = table1;
}
只需按照值在文件中的顺序从读取器中读取值。示例:
ushort speed = b.ReadUInt16();
byte something = b.ReadByte();
sbyte someOther = b.ReadSByte();
short pressure = b.ReadInt16();
有BinaryReader
方法用于读取大多数数据类型。
循环流的示例:
while (b.PeekChar() != -1) {
if (b.ReadByte() != 0x21) {
// error - didn't find valid separator
}
ushort speed = b.ReadUInt16();
// and read another 167 bytes of data
}