Gets the number of occurrences of the specific sequence char. This method does not perform any calculations to group counts of ambiguous symbols with corresponding unambiguous symbols. So the minimum G-C content of a DNA sequence would be calculated as GetCount('G') + GetCount('C') + GetCount('S')

public long GetCount(
	byte item
)

Public Function GetCount ( 
	item As Byte
) As Long

public:
long long GetCount(
	unsigned char item
)

member GetCount : 
        item : byte -> int64