C#检查身份证号码

public

static

class

Util

{

// <summary>

/// 检查身份证信息是否合法

/// 2010-10-13 jorln

/// </summary>

/// <param name="num">身份证号</param>

/// <param name="sex">性别</param>

/// <returns></returns>

public

static

bool

CheckIdentity(

string

num,

string

sex)

{

bool

isIden =

false

;

if

(Convert.ToInt32(num.Substring(6, 4)) > 1850 && Convert.ToInt32(num.Substring(6, 4)) < 2010 && Convert.ToInt32(num.Substring(10, 2)) <= 12 && Convert.ToInt32(num.Substring(12, 2)) <= 31)

{

if

(num.Substring(10, 2) ==

"02"

&& Convert.ToInt32(num.Substring(10, 2)) > 29)

return

isIden;

if

((Convert.ToInt32(num.Substring(16, 1)) % 2 == 0 && sex ==

"女"

) || (Convert.ToInt32(num.Substring(16, 1)) % 2 != 0 && sex ==

"男"

))

{

int

count = 0;

int

[] iden = { 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, };

for

(

int

i = 0; i < iden.Length; i++)

{

count += Convert.ToInt32(num.Substring(i, 1)) * iden[i];

}

int

cc = count % 11;

char

num18 = cc == 0 ?

'1'

:(cc == 1 ?

'2'

:(cc == 2 ?

'X'

:(cc == 3 ?

'9'

:(cc == 4 ?

'8'

:(cc == 5 ?

'7'

:(cc == 6 ?

'6'

:(cc == 7 ?

'5'

:(cc == 8 ?

'4'

:(cc == 9 ?

'3'

:

'2'

)))))))));

isIden =num.Substring(17, 1).ToUpper() == num18.ToString() ? 

true

:

false

;

}

}

return

isIden;

}

}