C# 判断字符串是否是int/double

 using System.Text.RegularExpressions;

 /// <summary>
 /// 判断字符串是否是int/double
 /// </summary>
 public static bool IsIntOrDouble(string strNumber)
 {
     Regex objNotNumberPattern = new Regex("[^0-9.-]");
     Regex objTwoDotPattern = new Regex("[0-9]*[.][0-9]*[.][0-9]*");
     Regex objTwoMinusPattern = new Regex("[0-9]*[-][0-9]*[-][0-9]*");
     const string strValidRealPattern = "^([-]|[.]|[-.]|[0-9])[0-9]*[.]*[0-9]+$";
     const string strValidIntegerPattern = "^([-]|[0-9])[0-9]*$";
     Regex objNumberPattern = new Regex("(" + strValidRealPattern + ")|(" + strValidIntegerPattern + ")");
     return !objNotNumberPattern.IsMatch(strNumber) &&
            !objTwoDotPattern.IsMatch(strNumber) &&
            !objTwoMinusPattern.IsMatch(strNumber) &&
            objNumberPattern.IsMatch(strNumber);
 }