一个将阿拉伯数字转换成中文大写的最简单算法

代码如下：

//加到类的定义部分
private static string[] cstr={"零","壹","贰","叁","肆", "伍", "陆","柒","捌","玖"};
private  static string[] wstr={"","","拾","佰","仟","萬","拾","佰","仟","億","拾","佰","仟"};
//数字必须在12位整数以内的字符串
//调用方式如：Label1.Text=ConvertInt("数字字符串");

public string ConvertInt(string str)
		{
		int len=str.Length;
	    int i;
		string tmpstr,rstr;
			rstr="";
			for(i=1;i<=len;i++)
			{
			tmpstr=str.Substring(len-i,1);
			rstr=string.Concat(cstr[Int32.Parse(tmpstr)]+wstr[i],rstr);
			}
			rstr=rstr.Replace("拾零","拾");
			rstr=rstr.Replace("零拾","零");
            rstr=rstr.Replace("零佰","零");
            rstr=rstr.Replace("零仟","零");
			rstr=rstr.Replace("零萬","萬");
			for(i=1;i<=6;i++)
			rstr=rstr.Replace("零零","零");
			rstr=rstr.Replace("零萬","零");
			rstr=rstr.Replace("零億","億");
			rstr=rstr.Replace("零零","零"); 
                        rstr+="圆整";		
	       return rstr;
		}