1 using System.Text.RegularExpressions;
2
3 /// <summary>
4 /// 判断字符串是否是int/double
5 /// </summary>
6 public static bool IsIntOrDouble(string strNumber)
7 {
8 Regex objNotNumberPattern = new Regex("[^0-9.-]");
9 Regex objTwoDotPattern = new Regex("[0-9]*[.][0-9]*[.][0-9]*");
10 Regex objTwoMinusPattern = new Regex("[0-9]*[-][0-9]*[-][0-9]*");
11 const string strValidRealPattern = "^([-]|[.]|[-.]|[0-9])[0-9]*[.]*[0-9]+$";
12 const string strValidIntegerPattern = "^([-]|[0-9])[0-9]*$";
13 Regex objNumberPattern = new Regex("(" + strValidRealPattern + ")|(" + strValidIntegerPattern + ")");
14 return !objNotNumberPattern.IsMatch(strNumber) &&
15 !objTwoDotPattern.IsMatch(strNumber) &&
16 !objTwoMinusPattern.IsMatch(strNumber) &&
17 objNumberPattern.IsMatch(strNumber);
18 }
