1 {
2 #region 强制转化
3 /// <summary>
4 /// object转化为Bool类型
5 /// </summary>
6 /// <param name="obj"></param>
7 /// <returns></returns>
8 public static bool ObjToBool(this object obj)
9 {
10 bool flag;
11 if (obj == null)
12 {
13 return false;
14 }
15 if (obj.Equals(DBNull.Value))
16 {
17 return false;
18 }
19 return (bool.TryParse(obj.ToString(), out flag) && flag);
20 }
21 /// <summary>
22 /// object强制转化为DateTime类型(吃掉异常)
23 /// </summary>
24 /// <param name="obj"></param>
25 /// <returns></returns>
26 public static DateTime? ObjToDateNull(this object obj)
27 {
28 if (obj == null)
29 {
30 return null;
31 }
32 try
33 {
34 return new DateTime?(Convert.ToDateTime(obj));
35 }
36 catch (ArgumentNullException ex)
37 {
38 return null;
39 }
40 }
41 /// <summary>
42 /// int强制转化
43 /// </summary>
44 /// <param name="obj"></param>
45 /// <returns></returns>
46 public static int ObjToInt(this object obj)
47 {
48 if (obj != null)
49 {
50 int num;
51 if (obj.Equals(DBNull.Value))
52 {
53 return 0;
54 }
55 if (int.TryParse(obj.ToString(), out num))
56 {
57 return num;
58 }
59 }
60 return 0;
61 }
62 /// <summary>
63 /// 强制转化为long
64 /// </summary>
65 /// <param name="obj"></param>
66 /// <returns></returns>
67 public static long ObjToLong(this object obj)
68 {
69 if (obj != null)
70 {
71 long num;
72 if (obj.Equals(DBNull.Value))
73 {
74 return 0;
75 }
76 if (long.TryParse(obj.ToString(), out num))
77 {
78 return num;
79 }
80 }
81 return 0;
82 }
83 /// <summary>
84 /// 强制转化可空int类型
85 /// </summary>
86 /// <param name="obj"></param>
87 /// <returns></returns>
88 public static int? ObjToIntNull(this object obj)
89 {
90 if (obj == null)
91 {
92 return null;
93 }
94 if (obj.Equals(DBNull.Value))
95 {
96 return null;
97 }
98 return new int?(ObjToInt(obj));
99 }
100 /// <summary>
101 /// 强制转化为string
102 /// </summary>
103 /// <param name="obj"></param>
104 /// <returns></returns>
105 public static string ObjToStr(this object obj)
106 {
107 if (obj == null)
108 {
109 return "";
110 }
111 if (obj.Equals(DBNull.Value))
112 {
113 return "";
114 }
115 return Convert.ToString(obj);
116 }
117 /// <summary>
118 /// Decimal转化
119 /// </summary>
120 /// <param name="obj"></param>
121 /// <returns></returns>
122 public static decimal ObjToDecimal(this object obj)
123 {
124 if (obj == null)
125 {
126 return 0M;
127 }
128 if (obj.Equals(DBNull.Value))
129 {
130 return 0M;
131 }
132 try
133 {
134 return Convert.ToDecimal(obj);
135 }
136 catch
137 {
138 return 0M;
139 }
140 }
141 /// <summary>
142 /// Decimal可空类型转化
143 /// </summary>
144 /// <param name="obj"></param>
145 /// <returns></returns>
146 public static decimal? ObjToDecimalNull(this object obj)
147 {
148 if (obj == null)
149 {
150 return null;
151 }
152 if (obj.Equals(DBNull.Value))
153 {
154 return null;
155 }
156 return new decimal?(ObjToDecimal(obj));
157 }
158 #endregion
159
160 }
