如何用1增加字符串和数字值

问题描述

大家好，



我在一个Windows应用程序里面工作，我有一个购买表格，在购买形式我有自动增量的账单号。



例如..



我的账单如SBN001，SBN002，SBN003，SBN004



现在，如果我删除SBN003 billno我得到SBN005并且它工作正常..但我手动编辑没有SBN003。那意味着在我的数据库账单中没有存储像。



SBN001，SBN002，SBN004，SBN003现在我想检查这4账单中的最大值是否意味着SBN004为最大值我想要加上SBN004 1 ..



我怎么能这样做请帮助我..





感谢问候

Hello To All,

I am Working in one windows Application inside that i have one purchase form, In purchase form i have bill no with auto increment.

For Example..

I have bill like SBN001 , SBN002 , SBN003 , SBN004

Now if i delete SBN003 billno i get SBN005 and it's work fine .. But i manually edit that no with SBN003. That Means in my database bill no stored like .

SBN001 , SBN002 , SBN004 , SBN003 now i want to check max no in this 4 bill means get SBN004 as max no and i want to Plus SBN004 with 1 ..

How i can do this please help me..


Thanks Regards

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