数字ToString作为货币显示并且带小数

//克隆当前区域信息
System.Globalization.NumberFormatInfo info = (System.Globalization.NumberFormatInfo)System.Globalization.CultureInfo.CurrentCulture.NumberFormat.Clone();
//小数保留2位 info.CurrencyDecimalDigits = 2;
value.ToString("c", info);