在C＃中以相同的结果将Binary（16）转换为int

Question

I have Binary(16) column in table 'Chip' with value 0xE1FC2E6F8674B7B9045C1104F9124C48 and in another table i have column chip_i which is type of integer that has the same value (but in int) = -116241336. Im using SQL Server 2012.

How can i convert 0xE1FC2E6F8674B7B9045C1104F9124C48 to -116241336 in C#?

I tried to convert it like this:

  string hexString = "0xE1FC2E6F8674B7B9045C1104F9124C48";
  byte[] hexByte = Encoding.ASCII.GetBytes(hexString);
  var chip_i = BitConverter.ToInt32(hexByte, 0);

but the result is 826636336

Answer 1

-116241336 is simply the last 4 bytes treated as a raw little-endian integer; 0xF9124C48 . So: just use the last 4 bytes as is . No need for ASCII:

int chip_i = Convert.ToInt32(hexString.Substring(hexString.Length - 8, 8), 16);