///
<param name=\"guid\"></param>
///
<returns></returns>
public
static
string
GuidTo16String()
long
i =
1
;
foreach
(
byte
b
in
Guid.NewGuid().ToByteArray())
i
*= ((
int
)b +
1
);
return
string
.Format(
"
{0:x}
"
, i -
DateTime.Now.Ticks);
///
<summary>
///
依据GUID获取19位的唯一数字序列
///
<returns></returns>
public
static
long
GuidToLongID()
byte
[] buffer =
Guid.NewGuid().ToByteArray();
return
BitConverter.ToInt64(buffer,
0
);
///
<summary>
///
生成22位唯一的数字 并发可用
///
<returns></returns>
public
static
string
GenerateUniqueID()
System.Threading.Thread.Sleep(
1
);
//
保证yyyyMMddHHmmssffff唯一
Random d =
new
Random(BitConverter.ToInt32(Guid.NewGuid().ToByteArray(),
0
));
string
strUnique = DateTime.Now.ToString(
"
yyyyMMddHHmmssffff
"
) + d.Next(
1000
,
9999
);
return
strUnique;
