验证

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
/// <summary>
/// Extensions.Validate
/// 描 述：验证扩展
/// </summary>
public static partial class Extensions
{
    /// <summary>
    /// 检测空值,为null则抛出ArgumentNullException异常
    /// </summary>
    /// <param name="obj">对象</param>
    /// <param name="parameterName">参数名</param>
    public static void CheckNull(this object obj, string parameterName)
    {
        if (obj == null)
            throw new ArgumentNullException(parameterName);
    }

    /// <summary>
    /// 是否为空
    /// </summary>
    /// <param name="value">值</param>
    public static bool IsEmpty(this string value)
    {
        return string.IsNullOrWhiteSpace(value);
    }

    /// <summary>
    /// 是否为空
    /// </summary>
    /// <param name="value">值</param>
    public static bool IsEmpty(this Guid? value)
    {
        if (value == null)
            return true;
        return IsEmpty(value.Value);
    }

    /// <summary>
    /// 是否为空
    /// </summary>
    /// <param name="value">值</param>
    public static bool IsEmpty(this Guid value)
    {
        if (value == Guid.Empty)
            return true;
        return false;
    }

    /// <summary>
    /// 是否为空
    /// </summary>
    /// <param name="value">值</param>
    public static bool IsEmpty(this object value)
    {
        if (value != null && !string.IsNullOrEmpty(value.ToString()))
        {
            return false;
        }
        else
        {
            return true;
        }
    }


}