1 /// <summary>
2 /// 是否是Decimal，空返回false
3 /// </summary>
4 /// <param name="str"></param>
5 /// <returns></returns>
6 private bool IsDecimal(string s)
7 {
8 bool isDec = true;
9 try
10 {
11 Convert.ToDecimal(s);
12 }
13 catch
14 {
15 isDec = false;
16 }
17
18 return isDec;
19
20 }
21
22 /// <summary>
23 /// 是否是整数，空返回false
24 /// </summary>
25 /// <param name="str"></param>
26 /// <returns></returns>
27 public static bool IsInt(string str)
28 {
29 if (str == string.Empty)
30 return false;
31 try
32 {
33 Convert.ToInt32(str);
34 return true;
35 }
36 catch
37 {
38 return false;
39 }
40 }
41
42 //判读是否是日期
43 public bool IsDate(string strDate)
44 {
45 try
46 {
47 DateTime.Parse(strDate);
48 return true;
49 }
50 catch
51 {
52 return false;
53 }
54 }
55
56
57
58 //用正则表达式判断
59 //是否是数字
60 public static bool IsNumeric(string value)
61 {
62 return Regex.IsMatch(value, @"^[+-]?\d*[.]?\d*$");
63 }
64 //是否是整数
65 public static bool IsInt(string value)
66 {
67 return Regex.IsMatch(value, @"^[+-]?\d*$");
68 }
