c# ///的 意思

/// <summary>
/// 格式化（小写转大写）
/// </summary>
/// <param name="numRMB"></param>
/// <returns></returns>
public static string Format(double numRMB)
{
try
{
if( 0 == numRMB)
return "零元整";

StringBuilder szRMB = new StringBuilder();

//乘100以格式成整型，便于处理
ulong iRMB = Convert.ToUInt64(numRMB * 100);

szRMB.Insert(0,ToUpper(Convert.ToInt32(iRMB % 100),-2));

//去掉原来的小数位
iRMB = iRMB / 100;

int iUnit = 0;

//以每4位为一个单位段进行处理，所以下边除以10000
while( 0 != iRMB )
{
szRMB.Insert(0,ToUpper(Convert.ToInt32(iRMB % 10000),iUnit ));
iRMB = iRMB / 10000;
iUnit += 4;
}

szRMB.Replace("元零整","元整");
szRMB.Replace("零元","元");

//格式修正
string strRMB = Regex.Replace(szRMB.ToString(),"零+","零");