Receives a string along with starting and ending delimiters and returns the part of the string between the delimiters

Example:
string cExpression = "JoeDoeJoeDoe";
VFPToolkit.strings.StrExtract(cExpression, "o", "eJ");		//returns "eDo"

public static string StrExtract( string cSearchExpression,
	string cBeginDelim,
	string cEndDelim );