window应用string转化问题

ref class housemaster
{
private:
/*float*/String^ amount;
String^ price;
String^ Num;
String^ MasterName;
String^ Address;
……
property String^ hPrice
{
String^ get()
{
return price;
}
void set(String^ value)
{
price=value;
}
}
lstUser[n]->hPrice

如何将lstUser[n]->hPrice转化为float，而后转回来

System::Single::Parse

https://msdn.microsoft.com/zh-cn/library/2thct5cb.aspx?cs-save-lang=1&cs-lang=cpp#code-snippet-1