如何使用c＃生成唯一的8位数字 [英] How to generate a unique 8 digit number using c#

问题描述

大家好吧

我想设计一个带有两个文本框的winform，第一个框是pincode，pincode txtbox是readonly所以无法编辑，另一个框是fullname。我希望在加载表单时，pincode文本框会自动生成8位唯一引脚，该引脚将被插入表中的主键列，因此没有两个密码应该相同。如果我再次加载表单，则生成另一个引脚，依此类推，等等。

提前谢谢

解决方案

试试 Guid.NewGuid方法 [ ^ ]

通常8位数不是确保您的ID是唯一的。我建议您使用GUID，因为它们是标准的并提供足够的唯一性。有关详细信息，请参阅此处：

http://en.wikipedia.org/wiki/Globally_unique_identifier [ ^ ]

并参考回答Prasad如何在C＃中创建ID。



这里还有一篇CP文章讨论这个主题并为你提供更多选项：

在.Net中生成唯一密钥 [ ^ ]

< blockquote>

检查这个

随机rand = 新随机（  100 ）; 
  int  ccc = rand.Next（ 000000000 ， 999999999 ）; 

http://www.c-sharpcorner.com/UploadFile/mahesh/RandomNumber11232005010428AM/RandomNumber.aspx [ ^ ]

http： //www.dotnetperls.com/random [ ^ ]

最好的问候

M.Mitwalli

Hi everybody
i want to design a winform with two textboxes the first box is pincode, the pincode txtbox is readonly so cannot be edited, the other box is fullname. i want that when the form is loaded the pincode textboxes automatically generate 8 digit unique pin,that will be inserted into the primary key column in the table so no two pincode number should be the same. if i load the form again another pin is generated and so on and on and on, .
Thanks in advance

解决方案

Try Guid.NewGuid Method[^]

Normally 8 digits are not to be sure that your ID is unique. I suggest you to use GUID's as they are standard and provide sufficient uniqueness. See here for more information:
http://en.wikipedia.org/wiki/Globally_unique_identifier[^]
and refer the answer by Prasad for how to create the ID's in C#.

Here is also a CP article discussing the topic and providing some more options for you:
Generating Unique Keys in .Net[^]

Hi ,
Check this

Random rand = new Random(100);
int ccc=  rand.Next(000000000, 999999999);

http://www.c-sharpcorner.com/UploadFile/mahesh/RandomNumber11232005010428AM/RandomNumber.aspx[^]
http://www.dotnetperls.com/random[^]
Best Regards
M.Mitwalli

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