求一取值正则表达式

[空白是我]

格式:
6位数字=值;

123456=15;
225845=23;
666666=55;

我想根据前面六位数字取得后面的值,不带分号
这样的正则表达式该如何写呀

[编程有钱人了]

(\d){6}\=(?<oo>\d+);

[十八道胡同]

"(\d){6}\=(?<YourNum>\d+);"

[空白是我]

是取后面的值
比如 123456 应该取到的值是15
而不是123456=15

[十八道胡同]

.Group["YourNum>"].value

[空白是我]

OK 给分

[lovvver]

string numberString = "123456=15; ";
string pattern = "\\d{6}=(?<Info>.*);";
MatchCollection matchCollection = Regex.Matches(numberString, pattern);
if (matchCollection.Count == 0) MessageBox.Show("not mathced.");
else
{
string result = matchCollection[0].Groups["Info"].Value;
MessageBox.Show(result);
}

[rainsome]

//楼主，可是要的这样的效果
//（仅供参考）
        private void fun1()
        {
            string str = @"123456=15;
                        225845=23;
                            666666=55; ";

            


            string strTest = "123456";
            Response.Write(String.Format("Filter:{0};Result:{1}.<br />", strTest, GetTheNumber(str, strTest)));

            Int32  intTest = 666666;
            Response.Write(String.Format("Filter:{0};Result:{1}.<br />", intTest, GetTheNumber(str, intTest)));

            Response.Write(String.Format("Source String:{0}.<br />", str));


        }

        private Int32?  GetTheNumber(String src,Object objFilter) 
        {
            if (!Regex.IsMatch(objFilter.ToString(), @"^\d{6}$")) return null;

            Regex objRegex = new Regex(string.Format(@"(?m)(?<={0}=)\d+?(?=;)", objFilter));

            Match m = objRegex.Match(src);

            if (m.Success)
            {
                Int32 _return;
                bool _isParse =Int32.TryParse(m.Value,out _return);
                if (_isParse)
                {
                    return _return;
                }
                else 
                {
                    return null;
                }               
            }
            else
            {
                return null;
            }                        
        }

/*
//Asp中显示结果
Filter:123456;Result:15.
Filter:666666;Result:55.
Source String:123456=15; 225845=23; 666666=55; . 
*/