C# String 找字元[正找/反找] +字串切割(分割)

資料來源: http://a-jau.blogspot.com/2012/01/cstringindexoflastindexofsubstringsplit.html

正找
    String.IndexOf

反找
    String.LastIndexOf

Ex: 

String StrBuf = System.Text.Encoding.Default.GetString(byBuf);//SY630NT2-SV6V511
if(StrBuf.LastIndexOf('V')>0)
{
	blnAns = true;
	m_StrV5ControllerModel = StrBuf.Substring(0, StrBuf.LastIndexOf('V'));//SY630NT2-SV6
	m_StrV5ControllerVersion = StrBuf.Substring(StrBuf.LastIndexOf('V')+1);//511
}